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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2023
or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                  to                 
Commission File Number: 1-13245
PIONEER NATURAL RESOURCES COMPANY
(Exact name of registrant as specified in its charter)
Delaware75-2702753
(State or other jurisdiction of incorporation)(I.R.S. Employer Identification No.)
777 Hidden Ridge
Irving, Texas 75038
(Address of principal executive offices and zip code)
(972) 444-9001
(Registrant's telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading SymbolName of each exchange on which registered
Common Stock, par value $.01 per sharePXDNew York Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes      No  
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes      No  
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes      No  
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes      No  
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer
Accelerated filer
Non-accelerated filerSmaller reporting company
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.    ☐
Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.    
If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.    
Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b)     
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).     Yes        No   
Aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter$48,037,455,068 
Number of shares of common stock outstanding as of February 20, 2024
233,623,121 
DOCUMENTS INCORPORATED BY REFERENCE:
(1)Portions of the Definitive Proxy Statement for the Company's Annual Meeting of Shareholders to be held in 2024 are incorporated into Part III of this Report.
1

TABLE OF CONTENTS
  Page
Item 6.


2

Definitions of Certain Terms and Conventions Used Herein
Within this Report, the following terms and conventions have specific meanings:
Measurements.
"Bbl" means a standard barrel containing 42 United States gallons.
"Bcf" means one billion cubic feet and is a measure of gas volume.
"BOE" means a barrel of oil equivalent and is a standard convention used to express oil and gas volumes on a comparable oil equivalent basis. Gas equivalents are determined under the relative energy content method by using the ratio of six thousand cubic feet of gas to one Bbl of oil or natural gas liquid.
"BOEPD" means BOE per day.
"MMBOPD" means one million barrels of oil per day.
"Btu" means British thermal unit, which is a measure of the amount of energy required to raise the temperature of one pound of water one degree Fahrenheit.
"MBbl" means one thousand Bbls.
"MBOE" means one thousand BOEs.
"Mcf" means one thousand cubic feet and is a measure of gas volume.
"MMBbl" means one million Bbls.
"MMBOE" means one million BOEs.
"MMBtu" means one million Btus.
"MMcf" means one million cubic feet.
Indices.
"Brent" means Brent oil price, a major trading classification of light sweet oil that serves as a benchmark price for oil worldwide.
"WAHA" is a benchmark pricing hub for West Texas gas.
"WTI" means West Texas Intermediate, a light sweet blend of oil produced from fields in western Texas and is a grade of oil used as a benchmark in oil pricing.
General terms and conventions.
"DD&A" means depletion, depreciation and amortization.
"ESG" means environmental, social and governance.
"Field fuel" means gas consumed to operate field equipment (primarily compressors) prior to the gas being delivered to a sales point.
"GAAP" means accounting principles generally accepted in the United States of America.
"GHG" means greenhouse gases.
"LNG" means liquefied natural gas.
"NGLs" means natural gas liquids, which are the heavier hydrocarbon liquids that are separated from the gas stream; such liquids include ethane, propane, isobutane, normal butane and natural gasoline.
"NYMEX" means the New York Mercantile Exchange.
"NYSE" means the New York Stock Exchange.
"OPEC" means the Organization of Petroleum Exporting Countries.
"Pioneer" or the "Company" means Pioneer Natural Resources Company and its subsidiaries.
"Proved developed reserves" means reserves that can be expected to be recovered through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well.
"Proved reserves" means those quantities of oil and gas, which, by analysis of geosciences and engineering data, can be estimated with reasonable certainty to be economically producible – from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulations – prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for the estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a reasonable time.

3

(i) The area of the reservoir considered as proved includes: (A) The area identified by drilling and limited by fluid contacts, if any, and (B) Adjacent undrilled portions of the reservoir that can, with reasonable certainty, be judged to be continuous with it and to contain economically producible oil or gas on the basis of available geoscience and engineering data.
(ii) In the absence of data on fluid contacts, proved quantities in a reservoir are limited by the lowest known hydrocarbons as seen in a well penetration unless geoscience, engineering or performance data and reliable technology establishes a lower contact with reasonable certainty.
(iii) Where direct observation from well penetrations has defined a highest known oil elevation and the potential exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geoscience, engineering or performance data and reliable technology establish the higher contact with reasonable certainty.
(iv) Reserves which can be produced economically through application of improved recovery techniques (including, but not limited to, fluid injection) are included in the proved classification when: (A) Successful testing by a pilot project in an area of the reservoir with properties no more favorable than in the reservoir as a whole, the operation of an installed program in the reservoir or an analogous reservoir, or other evidence using reliable technology establishes the reasonable certainty of the engineering analysis on which the project or program was based; and (B) The project has been approved for development by all necessary parties and entities, including governmental entities.
(v) Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. The price shall be the average during the 12-month period prior to the ending date of the period covered by the report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each month within such period, unless prices are defined by contractual arrangements, excluding escalations based upon future conditions.
"Proved undeveloped reserves" means reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion.
(i) Reserves on undrilled acreage shall be limited to those directly offsetting development spacing areas that are reasonably certain of production when drilled, unless evidence using reliable technology exists that establishes reasonable certainty of economic producibility at greater distances.
(ii) Undrilled locations can be classified as having proved undeveloped reserves only if a development plan has been adopted indicating that they are scheduled to be drilled within five years, unless the specific circumstances, justify a longer time.
(iii) Under no circumstances shall estimates for proved undeveloped reserves be attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the same reservoir or an analogous reservoir, or by other evidence using reliable technology establishing reasonable certainty.
"SEC" means the United States Securities and Exchange Commission.
"Standardized Measure" means the after-tax present value of estimated future net cash flows of proved reserves, determined in accordance with the rules and regulations of the SEC, using prices and costs employed in the determination of proved reserves and a 10 percent discount rate.
"U.S." means United States.
"WASP" means weighted average sales price.
With respect to information on the working interest in wells, drilling locations and acreage, "net" wells, drilling locations and acres are determined by multiplying "gross" wells, drilling locations and acres by the Company's working interest in such wells, drilling locations or acres. Unless otherwise specified, wells, drilling locations and acreage statistics quoted herein represent gross wells, drilling locations or acres.
All currency amounts are expressed in U.S. dollars.

4

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS
This Annual Report on Form 10-K (this "Report") contains forward-looking statements that involve risks and uncertainties. When used in this document, the words "believes," "plans," "expects," "anticipates," "forecasts," "models," "intends," "continue," "may," "will," "could," "should," "future," "potential," "estimate," or the negative of such terms and similar expressions as they relate to the Company are intended to identify forward-looking statements, which are generally not historical in nature. The forward-looking statements are based on the Company's current expectations, assumptions, estimates and projections about the Company and the industry in which the Company operates. Although the Company believes that the expectations and assumptions reflected in the forward-looking statements are reasonable as and when made, they involve risks and uncertainties that are difficult to predict and, in many cases, beyond the Company's control. In addition, the Company may be subject to currently unforeseen risks that may have a materially adverse effect on it.
These risks and uncertainties include, among other things, volatility of commodity prices; product supply and demand; the impact of armed conflict (including in Ukraine and the Middle East) and related political instability on economic activity and oil and gas supply and demand; competition; the ability to obtain drilling, environmental and other permits and the timing thereof; the effect of future regulatory or legislative actions on Pioneer or the industry in which it operates, including potential changes to tax laws; the ability to obtain approvals from third parties and negotiate agreements with third parties on mutually acceptable terms; potential liability resulting from pending or future litigation; the costs, including the potential impact of cost increases due to inflation and supply chain disruptions, and results of development and operating activities; the impact of a widespread outbreak of an illness, such as the COVID-19 pandemic, on global and U.S. economic activity, oil and gas demand, and global and U.S. supply chains; the risk of new restrictions with respect to development activities, including potential changes to regulations resulting in limitations on the Company's ability to dispose of produced water; availability of equipment, services, resources and personnel required to perform the Company's development and operating activities; access to and availability of transportation, processing, fractionation, refining, storage and export facilities; Pioneer's ability to replace reserves, implement its business plans or complete its development activities as scheduled; the risk that the transaction between Pioneer and Exxon Mobil Corporation may not be completed on anticipated terms and timing, or at all, including the risk of obtaining regulatory approvals; the possibility that any of the anticipated benefits of the transaction will not be realized or will not be realized within the expected time period; the risk that disruptions from the transaction will harm Pioneer's business, including current plans and operations and that management's time and attention will be diverted on transaction-related issues; potential adverse reactions or changes to business relationships resulting from the announcement or completion of the transaction; litigation relating to the transaction against Pioneer and its directors; the Company's ability to achieve its emissions reductions, flaring and other ESG goals; access to and cost of capital; the financial strength of (i) counterparties to Pioneer's credit facility, (ii) issuers of Pioneer's investment securities and (iii) purchasers of Pioneer's oil, NGL and gas production and downstream sales of purchased commodities; uncertainties about estimates of reserves, identification of drilling locations and the ability to add proved reserves in the future; the assumptions underlying forecasts, including forecasts of production, operating cash flow, well costs, capital expenditures, rates of return, expenses, and cash flow from downstream purchases and sales of oil and gas, net of firm transportation commitments; tax rates; quality of technical data; environmental and weather risks, including the possible impacts of climate change on the Company's operations and demand for its products; cybersecurity risks; the risks associated with the ownership and operation of the Company's water services business and acts of war or terrorism. In addition, the Company may be subject to currently unforeseen risks that may have a materially adverse effect on it.
Accordingly, no assurances can be given that the actual events and results will not be materially different than the anticipated results described in the forward-looking statements. See "Item 1. Business — Competition, Oil and Gas Industry Considerations, Marketing of Production, Sustainability and Environmental Compliance Costs and Regulation," "Item 1A. Risk Factors," "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Item 7A. Quantitative and Qualitative Disclosures About Market Risk" for a description of various factors that could materially affect the ability of Pioneer to achieve the anticipated results described in the forward-looking statements. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date hereof. Pioneer undertakes no duty to publicly update these statements except as required by law.

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PART I
ITEM 1.    BUSINESS
General
Pioneer is a Delaware corporation whose common shares are listed and traded on the NYSE. The Company is a large independent oil and gas exploration and production company that explores for, develops and produces oil, NGLs and gas in the Midland Basin in West Texas.
The Company's principal executive office is located at 777 Hidden Ridge, Irving, Texas, 75038. The Company also maintains an office in Midland, Texas and field offices in the Midland Basin.
Planned merger of the Company with Exxon Mobil Corporation. On October 10, 2023, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Exxon Mobil Corporation, a New Jersey corporation ("ExxonMobil"), and a subsidiary of ExxonMobil, pursuant to which, and subject to the terms and conditions thereof, the Company will merge with the subsidiary and become a wholly-owned subsidiary of ExxonMobil (the "Merger"). Under the terms of the Merger Agreement, each eligible share of the Company's common stock will be converted into the right to receive 2.3234 shares of ExxonMobil common stock (the "Exchange Ratio"). On February 7, 2024, the Company's shareholders adopted the Merger Agreement at a special meeting of shareholders. Completion of the Merger remains subject to certain conditions, including certain governmental and regulatory approvals. The Merger is currently expected to close in the second quarter of 2024; however, no assurance can be given as to when, or if, the Merger will occur.
Available Information
Pioneer files or furnishes annual, quarterly and current reports, proxy statements and other documents with the SEC under the Securities Exchange Act of 1934 (the "Exchange Act"). The SEC maintains a website (www.sec.gov) that contains reports, proxy and information statements, and other information regarding issuers, including Pioneer, that file electronically with the SEC.
The Company makes available, free of charge, through its website (www.pxd.com) its Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and, if applicable, amendments to those reports filed or furnished pursuant to Section 13(a) of the Exchange Act as soon as reasonably practicable after it electronically files such material with, or furnishes it to, the SEC. In addition to the reports filed or furnished with the SEC, Pioneer publicly discloses information from time to time in its press releases and investor presentations that are posted on its website or during publicly accessible investor conferences. Such information, including information posted on or connected to the Company's website, is not a part of, or incorporated by reference in, this Report or any other document the Company files with or furnishes to the SEC.
Mission and Strategies
The Company's mission is focused on value, safety, the environment, technology and its people. The Company's strategy is centered around the following strategic objectives:
maintaining a strong balance sheet and financial flexibility;
generating free cash flow with a strong return of capital framework to the Company's shareholders (subject to certain restrictions under the Merger Agreement);
utilizing the Company's scale and technological advancements to reduce costs and improve efficiency;
delivering economic production and reserve growth through drilling, completion and production improvement activities;
setting high expectations for employees and contractors to perform their jobs in a safe manner; and
maintaining industry-leading sustainable development and environmental stewardship efforts.
The Company's strategy is anchored by the Company's interests in the long-lived Spraberry/Wolfcamp oil field located in the Midland Basin in West Texas, which has an estimated remaining productive life in excess of 50 years.
Competition
The oil and gas industry is highly competitive in the exploration for and acquisition of reserves, the acquisition of oil and gas leases, marketing of oil, NGL and gas production, the obtaining of equipment and services and the hiring and retention of staff necessary for the identification, evaluation, operation and acquisition and development of oil and gas properties. The Company's competitors include major integrated oil and gas companies, other independent oil and gas companies and

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individuals engaged in the exploration for and development of oil and gas properties. The Company also faces competition from companies that supply alternative sources of energy, such as wind, solar and other renewables. Competition will increase as alternative energy technology becomes more reliable and governments throughout the world support or mandate the use of such alternative energy.
Competitive advantage is gained in the oil and gas exploration and development industry by employing well-trained and experienced personnel who make prudent capital investment decisions based on management direction, embrace technological innovation and are focused on price and cost management. The Company has a team of dedicated employees who represent the professional disciplines and sciences that the Company believes are necessary to allow Pioneer to maximize the long-term profitability inherent in its physical assets.
See "Item 1A. Risk Factors - The Company faces significant competition and some of its competitors have resources in excess of the Company's available resources" for additional information.
Oil and Gas Industry Considerations
Supply and demand for oil throughout the world remains volatile. Over the past few years, global oil inventories have consistently been lower than historical levels due to reduced capital investments being directed towards developing incremental oil supplies. Sanctions, import bans and price caps on Russian oil and petroleum products were implemented by various countries in response to the war in Ukraine, further impacting global oil supply. Most recently, renewed conflict in the Middle East has stoked fears of oil supply instability. From an economic perspective, the recent raising of interest rates to contend with significant inflation has resulted in a slowing global economy and the potential for a global recession, with Japan and the United Kingdom already reporting recessions. Further, recent data from China, such as weakened consumer spending and higher youth unemployment, point to a fragile economy. China remains the world's second largest economy and represents a key component of oil demand. These uncertainties led OPEC to reduce its oil demand outlook, which resulted in multiple cuts to its production quotas. As a result of the current global supply and demand uncertainties, average NYMEX oil and NYMEX gas prices for the year ended December 31, 2023 were $77.63 per Bbl and $2.74 per Mcf, respectively, as compared to $94.23 per Bbl and $6.55 per Mcf, respectively, for the same period in 2022.
Global oil price levels and general inflationary pressures will ultimately depend on various factors that are beyond the Company's control, such as (i) the ability of OPEC and other oil producing nations to manage the global oil supply, (ii) the impact of sanctions and import bans on production from Russia, (iii) the impact on oil supplies from the Middle East should the Middle Eastern conflicts continue to expand, (iv) global oil demand growth, including demand growth from China and India, (v) oilfield services demand, (vi) political stability of oil consuming countries and (vii) the overall health of the global economy. The Company continues to assess and monitor the impact of these factors and consequences on the Company and its operations.
See "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" for additional information.
Marketing of Production
General. Production from the Company's properties is marketed using methods that are consistent with industry practices. Sales prices for oil, NGL and gas production are negotiated based on factors normally considered in the industry, such as an index or spot price, distance from the well to a major pipeline, commodity quality and prevailing supply and demand conditions. See "Item 7A. Quantitative and Qualitative Disclosures About Market Risk" for additional information.
Seasonal nature of business. Generally, but not always, the demand for gas decreases during the summer months and increases during the winter months. Seasonal anomalies such as mild winters or hot summers may impact general seasonal changes in gas demand.
Delivery commitments. The Company has committed certain volumes of oil, NGLs and gas to customers under a variety of contracts, some of which have volumetric firm transportation or fractionation requirements that could require monetary shortfall penalties if the Company's transported or fractionation volumes are insufficient to satisfy associated commitments. See Note 10 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Significant purchasers. During 2023, the Company's oil, NGL and gas sales to Energy Transfer Crude Marketing LLC, Shell Trading US Company and Occidental Energy Marketing Inc. accounted for 28 percent, 16 percent and 11 percent of the Company's oil, NGL and gas revenues, respectively. The loss of one of these significant purchasers or an inability to secure

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adequate pipeline, gas plant and NGL fractionation infrastructure for production could have a material adverse effect on the Company's ability to produce and sell its oil, NGL and gas production.
Revenues from sales of purchased oil to Equinor Marketing & Trading US Inc., Suncor Energy USA Marketing Inc. and Shell Trading US Company accounted for 12 percent, 11 percent and 10 percent of the Company's sales of purchased commodities, respectively. No other sales customer exceeded 10 percent of the Company's sales of purchased commodities during 2023. The loss of the Company's significant purchaser of purchased commodities would not be expected to have a material adverse effect on the Company's ability to sell commodities it purchases from third parties.
See Note 12 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Sustainability and Environmental Compliance Costs
Since 2017, the Company has annually published a Sustainability Report that follows the guidance provided by the Global Reporting Initiative framework and the Sustainability Accounting Standards Board to address its ESG performance. The Company published a separate Climate Risk Report in 2021 and 2022 structured in accordance with the Task Force on Climate-related Financial Disclosures framework. In 2023, the Company combined the two reports into a single publication which has increased the transparency of Pioneer's progress toward integrating climate-related risks and opportunities into the Company's governance structure, business strategy and planning processes, and risk management practices. For more information on the Company's approach to sustainability management, refer to its Sustainability Report, which is available on Pioneer's website (www.pxd.com). Information contained in the Company's Sustainability Reports is not incorporated by reference into, and does not constitute a part of, this Report. While the Company believes that the disclosures contained in the Company's Sustainability Report and other voluntary disclosures regarding ESG matters are responsive to various areas of investor interest, the Company believes that certain of these disclosures do not currently address matters that are material to the Company's operations, strategy, financial condition, or financial results, although this view may change in the future based on new information that could materially alter the estimates, assumptions, or timelines used to create these disclosures. Given the estimates, assumptions and timelines used to create the Company's Sustainability Report and other voluntary disclosures, the materiality of these disclosures is inherently difficult to assess in advance.
The trend in environmental regulation has been to place more restrictions and limitations on activities that may affect the environment and thus, there can be no assurance as to the amount or timing of future expenditures for environmental compliance or remediation and actual future expenditures may be different from the amounts the Company currently anticipates. As with the upstream industry in general, complying with current and anticipated environmental laws and regulations can increase the Company's capital costs to drill, complete and construct and operate facilities. While these laws and regulations may affect the Company's capital expenditures and net income, the Company does not believe they will have a material adverse effect on its business, financial position, results of operations or cash flows, nor does the Company believe that they will affect its competitive position since the operations of its competitors are generally similarly affected. Future events, such as changes in existing laws or enforcement policies, the promulgation of new laws or regulations or the development or discovery of new facts or conditions may cause the Company to incur significant costs. See "Health, Safety and Environmental Risks" in "Item 1A. Risk Factors" for additional information.
Environmental, social, and governance leadership. The Company's ESG Task Force comprises a subset of the Company's executive committee (which is comprised of its Chief Executive Officer, Chief Financial Officer and other executive officers ("Executive Committee")) and other key officers, leaders and subject matter experts from various disciplines across the Company. The ESG Task Force shapes the Company's long-term ESG strategy and oversees the implementation of corporate ESG goals and related reporting. The ESG Task Force provides strategic direction and expert advice to the broader organization and through its leadership, the Company has improved its ESG governance processes, including: (i) aiding the Company's Board of Directors (the "Board") in formalizing its oversight of ESG goals and the formation of the Sustainability and Climate Oversight Committee; (ii) establishing and progressing the Company's long-term net zero (Scope 1 and Scope 2) emissions ambition; (iii) aligning risk management and decision-making processes with voluntary reporting frameworks, including the Task Force on Climate-related Financial Disclosure and the Sustainability Accounting Standards Board; (iv) driving strategic and operational activities to implement ESG goals; (v) sanctioning a third-party audit to provide limited assurance on emissions data; and (vi) progressing the Company's supply chain performance. The priority of the ESG Task Force is to continue to assess, develop and progress ESG activities at the Company.
Human Capital
As of December 31, 2023, the Company had 2,213 employees, 933 of whom were employed in field operations.

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Values and governance. Pioneer's approach to human capital management is guided by its core RESPECT values. These values - Respect and inclusion, Ethics and honesty, Safety and stewardship, Personal accountability, Entrepreneurship and innovation, Communication and transparency and Teamwork - apply to all employees, suppliers and contractors and guide how Pioneer interacts with partner companies, communities, the environment and all other stakeholders. Pioneer aims to conduct all aspects of its business in accordance with these core values, which serve as the cultural foundation of the Company.
The Company's Executive Committee and its Board set the Company's human capital management philosophies and goals. They routinely engage on workforce-related topics with the support of the human resources function, which oversees and administers the Company's human capital management programs.
The Company understands that employee recruiting, retention and development play a critical role in the Company's ability to conduct its business activities and achieve its long-term strategy. As a result, the Company's Executive Committee and Board take a holistic view of human capital management and have established policies and development programs with the goal of creating an equitable and inclusive environment to allow all employees to feel respected, valued and connected to the business. The key aspects of the Company's human capital management include the Company's compensation and benefits program, diversity and inclusion initiatives, recruitment, talent management and development, community involvement and Health, Safety and Environment ("HSE") programs.
Compensation and benefits program. The Company annually reviews its compensation levels for all employees in an effort to adjust compensation levels for changing market conditions, allowing the Company to attract and retain a highly skilled workforce. The Company considers its employees to be its greatest asset and encourages them to take full advantage of the benefits and programs the Company offers. To ensure Pioneer attracts and retains top talent, the Company maintains an above-average benefits package. Pioneer's employees participate in incentive plans that take into consideration individual and Company performance through a traditional cash bonus plan and a variable compensation plan denominated in Company shares. These plans align employee compensation with the Company's success on critical performance metrics and goals, while also recognizing individual performance. The variable compensation plan denominated in Company shares is designed to attract and retain employees, reward performance and align the interest of employees with shareholders through the encouragement of share ownership. In addition to cash and equity compensation, the Company also offers other employee benefits such as Company paid premiums for life and health (medical, dental and vision) insurance, paid time off, paid parental leave, flexible work schedules and a 401(k) plan that includes employer matching contributions.
The Company routinely benchmarks its compensation and benefits program to ensure that the programs remain competitive, continue to align with the Company's RESPECT values and meet the needs of employees and their families. As part of the Company's benefits program, it offers flexible work schedules, including a hybrid remote work program, compressed workweeks and allowances for time off, including a parental leave policy that includes up to twelve weeks of paid leave for the primary caregiver and two weeks of paid leave for the secondary caregiver. The Company's wellness programs include on-site health centers, daycare centers, fitness centers, a range of healthy eating options at employee cafeterias and an employee assistance program to support the mental well-being of employees.
Diversity, equity and inclusion. The Company is committed to creating an inclusive environment where all employees feel respected, valued and connected to the business — a workplace to which individuals bring their authentic selves and can be successful in achieving their goals. The Company's dedicated Diversity, Equity and Inclusion ("DEI") program is focused on every aspect of the Company's business. The Company's Executive Committee is accountable for having long-term DEI goals for their respective departments as the Company believes that senior leadership involvement is crucial for progress on these goals. In addition, DEI plans and progress are reviewed regularly with the Board. The Company has established a variety of DEI initiatives, such as OnePioneer, an employee-led Company organization whose goal is to advance DEI across the entire Company.
The Company actively monitors diversity metrics across its entire workforce. Currently, 33 percent of the Board and 38 percent of the Executive Committee are women and 17 percent of the Board and 13 percent of the Executive Committee identify as ethnic minorities. The Company intends to disclose its 2023 Consolidated EEO-1 Report on its website (www.pxd.com) after submission of the report to the U.S. Equal Employment Opportunity Commission in an effort to provide additional transparency into the Company's efforts to increase under-represented populations in its workforce.
Talent management and development. The Company's talent planning involves a comprehensive approach to adequately prepare employees for their responsibilities and for future advancement. The Company's performance management process occurs annually and, in accordance with the Company's RESPECT values, encourages and reinforces ongoing feedback and coaching between employees and managers, employee growth and development for their current role and future success and alignment of individual goals with company-wide goals and team objectives. Pioneer strives to build a more skilled and engaged workforce with skill-building and competency-based training and development opportunities. The Company's

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competency model comprises professional, leadership and technical competencies and complements each employee's individual development planning process. In furtherance of each employee's individual development plan, the Company's workforce is trained in accordance with Pioneer's 70/20/10 learning model (70 percent on-the-job and experience-based, 20 percent collaboration and coaching, 10 percent formal training). Employees are offered a variety of development options including in-person professional trainings, technical trainings, consultation services, vendor partnerships and more.
The Company's talent planning approach also identifies and targets development of critical talent. The Company identifies critical roles based on several factors, including strategic importance, scope and impact, and unique skills. Successor candidates for those critical roles are then identified as those who have the interest, ability and experience to succeed in the critical role within five years. Talent planning enables Pioneer to proactively advance succession planning and offer targeted development for high potential employees and successors, while enabling a cross-functional view of talent to increase visibility and mobility.
Community involvement. Pioneer's dedication to community well-being and success shows in the many ways the Company seeks to be a good neighbor in its operating areas. The Company's employees continually seek out events, organizations, initiatives and partnerships to support the communities where they work and live, and the Company is honored to support their ongoing efforts to enrich these communities, including through cash contributions, land donations and a charitable matching program.
Health, safety and environment. The Company's HSE organization, with oversight from the Health, Safety and Environment Committee (the "HSE Committee") of the Board, supports the Company's business teams to provide an organized approach for HSE activities and maintain a culture of improvement in HSE practices. The Company's HSE policy identifies and manages health, safety and environmental risks and impacts through business decisions, plans and operations by fostering a culture of safety and environmental stewardship, as well as a proactive network of systems to monitor compliance with regulatory requirements. This policy applies to all employees. The Company expects contractors, vendors and suppliers on Pioneer property for business-related purposes to identify and manage their own HSE risks and impacts in collaboration with the Company, and to maintain an HSE policy that meets or exceeds the Company's HSE policy. This expectation is further strengthened with the Company's Supplier Code of Conduct that aligns with and compliments the Company's Code of Conduct and provides additional clarity to suppliers regarding the Company's expectations in connection with HSE risks and other areas including values, human rights, sustainability, compliance and anti-bribery, among others.
The Company's HSE policy covers all Pioneer operations and aligns with the Company's HSE Management System ("HSEMS"). As outlined in the HSE policy, the Company is dedicated to protecting the health and safety of everyone who works at Pioneer facilities by encouraging high standards. All HSE incidents are required to be reported, no matter how small, and are investigated to develop corrective actions to reduce the likelihood of recurrence. The HSEMS consists of 13 elements that set HSE expectations, provide an avenue for employee engagement and drive HSE performance improvement through a robust risk reduction program. The Pioneer HSE risk management program identifies and manages risks across business teams. In support of driving continuous improvement, HSE strategic objectives, focus areas and tactical deliverables are established annually. Throughout the year, progress toward these objectives are measured and reported to the Executive Committee and the HSE Committee.
Regulation
The oil and gas industry is extensively regulated at the federal, state and local levels. Regulations affecting elements of the energy sector are under constant review for amendment or expansion and frequently more stringent requirements are imposed. Various federal and state agencies, including the Texas Railroad Commission, the Bureau of Land Management (the "BLM"), an agency of the U.S. Department of the Interior ("DOI"), the U.S. Environmental Protection Agency (the "EPA") and the U.S. Occupational Safety and Health Administration ("OSHA"), have legal and regulatory authority and oversight over the Company's exploration and development activities and operations. Other agencies with certain authority over the Company's business include the Internal Revenue Service, the SEC and NYSE. Ensuring compliance with the rules, regulations and orders promulgated by such entities requires extensive effort and incremental costs to comply, which affects the Company's profitability. Because public policy changes are commonplace, and existing laws and regulations are frequently amended, the Company is unable to predict the future cost or impact of compliance. However, the Company does not expect that any of these laws and regulations will affect its operations materially differently than they would affect other companies with similar operations, size and financial strength.
The following are significant areas of government control and regulation affecting the Company:
Securities regulations. Enterprises that sell securities in public markets are subject to regulatory oversight by agencies such as the SEC and the NYSE. This regulatory oversight imposes many requirements on the Company, including the responsibility for establishing and maintaining disclosure controls and procedures alongside internal controls over financial

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reporting, and ensuring that the financial statements and other information included in submissions to the SEC do not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made in such submissions not misleading. Failure to comply with the rules and regulations of the SEC could subject the Company to litigation from public or private plaintiffs. Failure to comply with the rules of the NYSE could result in the delisting of the Company's common shares, which would have an adverse effect on the market price and liquidity of the Company's common shares. Compliance with some of these rules and regulations is costly, and regulations are subject to change or reinterpretation.
Environmental and occupational health and safety matters. The Company strives to conduct its operations in a socially and environmentally responsible manner and is required to comply with many federal, state and local laws, regulations and executive orders concerning occupational safety and health, the discharge or other release of materials and protection of the environment and natural resources. These environmental legal requirements primarily relate to:
the discharge or other release of pollutants into federal and state waters and the ambient air;
assessing the environmental impact of seismic acquisition, drilling and construction activities;
the generation, storage, transportation and disposal of waste materials, including hazardous substances and wastes;
the emission of certain gases, including GHGs, into the atmosphere;
the monitoring, abandonment, reclamation and remediation of wells and other sites, including sites of former operations;
the development of emergency response and spill contingency plans;
the protection of threatened and endangered species; and
worker protection.
The more significant of these existing environmental and occupational health and safety laws and regulations include the following U.S. legal standards, as amended from time to time:
the Clean Air Act ("CAA"), which restricts the emission of air pollutants from many sources and imposes various preconstruction, operational, monitoring and reporting requirements, and has also been relied upon by the EPA as authority for adopting climate change regulatory initiatives relating to GHG emissions;
the Federal Water Pollution Control Act, also known as the Clean Water Act ("CWA"), which regulates discharges of pollutants from facilities to state and federal waters, and establishes the extent to which waterways are subject to federal jurisdiction and rulemaking as protected waters of the United States;
the Comprehensive Environmental Response, Compensation and Liability Act of 1980 ("CERCLA"), which imposes liability on generators, transporters, disposers and arrangers of hazardous substances at sites where hazardous substance releases have occurred or are threatening to occur;
the Resource Conservation and Recovery Act ("RCRA"), which governs the generation, treatment, storage, transport and disposal of solid wastes, including oil and gas exploration and production wastes and hazardous wastes;
the Safe Drinking Water Act ("SDWA"), which ensures the quality of the nation's public drinking water through adoption of drinking water standards and controlling the injection of waste fluids into below-ground formations that may adversely affect drinking water sources;
the Occupational Safety and Health Act ("OSH Act"), which establishes workplace standards for the protection of the health and safety of employees, including the implementation of hazard communications programs designed to inform employees about hazardous substances in the workplace, potential harmful effects of these substances and appropriate control measures; and
the Endangered Species Act ("ESA"), which restricts activities that may affect federally identified endangered and threatened species or their habitats through the implementation of operating restrictions or a temporary, seasonal or permanent ban in affected areas.
Additionally, there are existing tribal, state and local jurisdictions where the Company operates that also have, or are developing or considering developing, similar environmental and occupational health and safety laws and regulations governing many of these same types of activities. Failure by the Company to comply with these laws, regulations and regulatory initiatives or controls may result in the assessment of sanctions, including administrative, civil and criminal penalties; the imposition of investigatory, remedial and corrective action obligations or the obligation to incur capital or operating expenditures; the occurrence of restrictions, delays or cancellations in the permitting, development or expansion of projects; and issuance of injunctions restricting or prohibiting some or all of the Company's activities in a particular area. Historically, the Company's environmental and worker safety compliance costs have not had a material adverse effect on its results of operations. However, there can be no assurance that such costs will not be material in the future or that such future compliance will not have a material adverse effect on the Company's business and operational results.
The Company owns, leases or operates numerous properties that have been used for oil and gas exploration and production activities for many years. The Company also has acquired certain properties from third parties whose actions with

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respect to the management and disposal or release of hydrocarbons, hazardous substances or wastes at or from such properties were not under the Company's control prior to acquiring them. Under certain environmental laws and regulations, such as CERCLA and RCRA, the Company could incur strict joint and several liability due to damages to natural resources or for remediating hydrocarbons, hazardous substances or wastes disposed of or released by prior owners or operators. Moreover, an accidental release of materials into the environment during the Company's operations may cause it to incur significant costs and liabilities. The Company also could incur costs related to the clean-up of third-party sites to which it sent regulated substances for disposal or to which it sent equipment for cleaning and for damages to natural resources or other claims related to releases of regulated substances at or from such third-party sites.
Over time, the trend in environmental and occupational health and safety laws and regulations is to typically place more restrictions and limitations on activities that may adversely affect the environment or expose workers to injury. If existing legal requirements change or new legislative, regulatory or executive initiatives are developed and implemented in the future, the Company may be required to make significant, unanticipated capital and operating expenditures. The Company may not have insurance or be fully covered by insurance against all environmental and occupational health and safety risks. For more information on environmental and occupational health and safety matters, see the risk factors identified as Health, Safety and Environmental Risks in "Item 1A. Risk Factors."
Other regulation of the oil and gas industry. The Company's oil and gas operations are subject to laws and regulations that relate to matters including:
the acquisition of seismic data;
location, drilling and casing of wells;
hydraulic fracturing;
well production operations;
disposal of produced water;
regulation of transportation and sale of oil, NGLs and gas;
surface usage;
calculation and disbursement of royalty payments and production taxes; and
restoration of properties used for oil and gas operations.
Development and production operations are subject to various regulations, including regulations requiring permits for the drilling of wells, the posting of bonds in connection with development and production activities and the filing of reports related to production operations. Texas, and some municipalities in which the Company operates, also regulate one or more of the following:
the location of wells;
the method of drilling and casing wells;
the method and ability to fracture stimulate wells;
the surface use and restoration of properties upon which wells are drilled;
the disposal of produced water;
the plugging and abandoning of wells; and
notices to surface owners and other third parties.
State laws regulate the size of drilling and spacing units or proration units governing the drilling and production of oil and gas properties. The Company relies on voluntary pooling, production sharing agreements and the drilling of allocation wells to develop its leases. In some instances, forced pooling or unitization may be implemented by third parties and may reduce the Company's interest in the unitized properties. In addition, state conservation laws establish maximum rates of production from oil and gas wells and generally prohibit the venting or flaring of gas without a permit. These laws and regulations may limit the amount of oil and gas the Company can produce from the Company's wells, negatively affect the economic decision to continue to produce these wells or limit the number of wells or locations that the Company can economically drill.
Approximately one percent of the Company's U.S. oil and gas leases are granted or approved by the federal government and administered by the BLM. All of the Company's federal leases are outside of Texas and the Company has no current operations or plans to further develop the leases at this time. Such leases require compliance with detailed federal regulations and orders that regulate, among other matters, drilling and operations on lands covered by these leases and the calculation and disbursement of royalty payments to the federal government.
See "Regulatory Risks" and "Health, Safety and Environmental Risks" included in "Item 1A. Risk Factors" for additional information.

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PIONEER NATURAL RESOURCES COMPANY
ITEM 1A.    RISK FACTORS
The Company's operations and financial results are subject to various risks and uncertainties, including but not limited to those described below. Other risks are described in "Item 1. Business — Competition, Markets and Regulations," "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Item 7A. Quantitative and Qualitative Disclosures About Market Risk." The Company's business could also be affected by additional risks and uncertainties not currently known to the Company or that it currently deems to be immaterial. If any of these risks actually occur, it could materially harm the Company's business, financial condition or results of operations or impair the Company's ability to implement business plans or complete development activities as scheduled. In that case, the market price of the Company's common shares could decline. The following risk factors are summarized as general business and industry; operational; financial; health, safety and environmental; regulatory; and merger related.
General Business and Industry Risks
The prices of oil, NGLs and gas are highly volatile. A sustained decline in these commodity prices could materially and adversely affect the Company's business, financial condition and results of operations.
Declining general economic, business or industry conditions could have a material adverse effect on the Company's results of operations.
The Company's operations and drilling activity are concentrated in the Midland Basin of West Texas; such concentration makes the Company vulnerable to risks associated with operating in a limited geographic area.
The Company may not be able to obtain access on commercially reasonable terms or otherwise to gathering systems, pipelines and other processing, fractionation, refining, storage, transportation and export facilities to market its oil, NGL and gas production.
The Company relies on a limited number of purchasers for a majority of its products.
The refining industry and export facilities may be unable to absorb U.S. oil production, and the ability to export oil is subject to suspension; in any such case, the resulting surplus could depress prices and restrict the availability of markets.
Estimates of proved reserves and future net cash flows are not precise. The actual quantities and net cash flows of the Company's proved reserves may prove to be lower than estimated.
Because the Company's producing wells decline continually over time, the Company will need to mitigate these declines through drilling and production enhancement initiatives and/or acquisitions.
A portion of the Company's total estimated proved reserves as of December 31, 2023 were undeveloped, and those proved reserves may not ultimately be developed.
The Company faces significant competition and some of its competitors have resources in excess of the Company's available resources.
The Company's business could be materially and adversely affected by security threats, including cybersecurity threats, and other disruptions.
Operational Risks
The Company's operations involve many operational risks, some of which could result in unforeseen interruptions to the Company's operations and substantial losses to the Company for which the Company may not be adequately insured.
Exploration and development drilling involve substantial costs and risks and may not result in commercially productive reserves.
Part of the Company's strategy involves using some of the latest available horizontal drilling and completion techniques, which involve risks and uncertainties in their application.
The Company's expectations for future drilling activities will be realized over several years, making them susceptible to uncertainties that could materially alter the occurrence or timing of such activities.
The Company's operations are substantially dependent upon the availability of water and its ability to dispose of produced water gathered from drilling and production activities.
The Company's use of seismic data is subject to interpretation and may not accurately identify the presence of oil and gas, which could materially and adversely affect the results of its future drilling operations.
The Company's gas processing and gathering systems are subject to operational and regulatory risks.
Financial Risks
The Company's actual production could differ materially from its forecasts.
The Company could experience periods of higher costs if commodity prices rise.
The Company is a party to debt instruments, a Credit Facility and other financial commitments that may limit the Company's ability to fund future business and financing activities.

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PIONEER NATURAL RESOURCES COMPANY
The Company's return of capital strategies may be changed at the discretion of the Board and are subject to certain considerations.
A failure by purchasers of the Company's production to satisfy their obligations to the Company could have a material adverse effect on the Company's results of operations.
Pioneer's ability to utilize its U.S. net operating loss carryforwards to offset future income taxes may be limited.
The Company periodically evaluates its proved and unproved oil and gas properties, goodwill and other long-lived assets for impairment and could be required to recognize noncash charges in the earnings of future periods.
Health, Safety and Environmental Risks
The Company's operations are subject to a series of risks arising out of the threat of climate change, energy conservation measures or initiatives that stimulate demand for alternative forms of energy.
The nature of the Company's assets and production operations may impact the environment or cause environmental contamination.
The Company's hydraulic fracturing and former sand mining operations may result in silica-related health issues and litigation.
Increasing attention to ESG matters may impact the Company's business.
Regulatory Risks
The Company's operations are subject to stringent environmental, oil and gas-related and occupational safety and health legal requirements.
Laws, regulations and other executive actions or regulatory initiatives regarding hydraulic fracturing could increase the Company's cost of doing business and result in additional operating restrictions, delays or cancellations that could have a material adverse effect on the Company's business, results of operations and financial condition.
Laws and regulations pertaining to protection of threatened and endangered species or to critical habitat, wetlands and natural resources could delay, restrict or prohibit the Company's operations and cause it to incur substantial costs.
The Company's transportation of gas; sales and purchases of oil, NGLs and gas or other energy commodities; and any derivative activities related to such energy commodities, expose the Company to potential regulatory risks.
The Company's bylaws provide that the Court of Chancery of the State of Delaware (or if the Court of Chancery does not have jurisdiction, the federal district court for the District of Delaware) will be the exclusive forum for certain legal actions between the Company and its shareholders and that the federal district courts of the United States shall be the sole and exclusive forum for the resolution of causes of action arising under the Securities Act of 1933.
Changes in tax laws or the interpretation thereof or the imposition of new or increased taxes or fees may adversely affect the Company's operations and cash flows.
Risks Associated with the Merger
Completion of the Merger is currently subject to certain conditions and if these conditions are not satisfied or waived, the Merger will not be completed.
Because the Exchange Ratio is fixed and the market price of ExxonMobil common stock has fluctuated and will continue to fluctuate, the Company's shareholders cannot be sure of the value of the consideration they will receive in the Merger, if completed.
The Company's business relationships may be subject to disruption due to uncertainty associated with the Merger.
The Merger Agreement restricts the Company's ability to pursue alternatives to the Merger.
Failure to complete the Merger could negatively impact the share price and the future business and financial results of the Company.
Litigation against the Company could result in substantial costs, an injunction preventing the completion of the Merger and/or a judgment resulting in the payment of damages.
The Company will incur significant transaction and Merger-related costs in connection with the Merger.

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PIONEER NATURAL RESOURCES COMPANY
General Business and Industry Risks
The prices of oil, NGLs and gas are highly volatile. A sustained decline in these commodity prices could materially and adversely affect the Company's business, financial condition and results of operations.
The Company's revenues, profitability, cash flow and future rate of growth are highly dependent on commodity prices. Commodity prices may fluctuate widely in response to relatively minor changes in the supply of and demand for oil, NGLs and gas, market uncertainty and a variety of additional factors that are beyond the Company's control, such as:
domestic and worldwide supply of and demand for oil, NGLs and gas;
worldwide oil, NGL and gas inventory levels, including at Cushing, Oklahoma, the benchmark location for WTI oil prices, and the U.S. Gulf Coast, where the majority of the U.S. refinery capacity exists;
volatility and trading patterns in the commodity-futures markets;
the capacity of U.S. and international refiners to utilize U.S. supplies of oil and condensate;
weather conditions, including extreme climatic events;
overall domestic and global political and economic conditions, including the imposition of tariffs or trade or other economic sanctions, political instability or armed conflict in Ukraine, Russia, the Middle East and other oil and gas producing regions, and the effect on global markets of the price cap on Russian oil;
global or national health concerns, including the outbreak of pandemic or contagious disease, which may reduce the demand for oil, NGLs and gas because of reduced global or national economic activity;
actions of OPEC, its members and other state-controlled oil companies relating to oil price and production controls;
the price and quantity of oil, NGLs and LNG imports to and exports from the U.S.;
technological advances or social attitudes or policies affecting energy consumption and energy supply;
domestic and foreign governmental legislative efforts, executive actions and regulations, including environmental regulations, climate change regulations and taxation;
the effect of energy conservation efforts;
shareholder activism or activities by non-governmental organizations to limit certain sources of capital for the energy sector or restrict the exploration, development and production of oil and gas;
the proximity, capacity, cost and availability of gathering systems, pipelines and other processing, fractionation, refinery, storage and export facilities; and
the price, availability and acceptance of alternative fuels and governmental policies encouraging their adoption and use.
Commodity prices have historically been, and continue to be, extremely volatile. For example, the Brent oil prices in 2023 ranged from a high of $96.55 to a low of $71.84 per Bbl and NYMEX gas prices in 2023 ranged from a high of $4.17 to a low of $1.99 per MMBtu. The Company expects this volatility to continue. A further or extended decline in commodity prices could materially and adversely affect the Company's future business, financial condition, results of operations, liquidity or its ability to fund planned capital expenditures, pay dividends or repurchase shares of common shares (subject to certain restrictions in the Merger Agreement). The Company makes price assumptions that are used for planning purposes, and a significant portion of the Company's cash outlays, including rent, salaries and noncancellable capital and transportation commitments, are largely fixed in nature. Accordingly, if commodity prices are below the expectations on which these commitments were based, the Company's financial results are likely to be adversely and disproportionately affected because these cash outlays are not variable in the short-term and cannot be quickly reduced to respond to unanticipated decreases in commodity prices.
Significant or extended price declines could materially and adversely affect the amount of oil, NGLs and gas that the Company can produce economically, which may result in the Company having to make significant downward adjustments to its estimated proved reserves. A reduction in production could also result in a shortfall in expected cash flows and require the Company to reduce capital spending or borrow funds to cover any such shortfall. Any of these factors could negatively affect the Company's ability to replace its production and its future rate of growth.
Declining general economic, business or industry conditions could have a material adverse effect on the Company's results of operations.
The economies in the United States and certain countries in Europe and Asia have been growing, with resulting improvements in industrial demand and consumer confidence. However, other economies, such as those of certain South American nations and, recently, Japan and the United Kingdom, continue to face economic struggles or slowing economic growth. If these conditions worsen, combined with a decline in economic growth in other parts of the world, there could be a significant adverse effect on global financial markets and commodity prices. In addition, continued war in Ukraine, instability in the Middle East and the occurrence or threat of terrorist attacks in the United States or other countries could adversely affect

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the global economy. If the economic climate in the United States or abroad were to deteriorate, due to inflation, rising interest rates or otherwise, demand for petroleum products could diminish or stagnate, which could depress the prices at which the Company could sell its oil, NGLs and gas, affect the ability of the Company's vendors, suppliers and customers to continue operations and ultimately decrease the Company's cash flows and profitability. In addition, reduced worldwide demand for debt and equity securities issued by oil and gas companies may make it more difficult for the Company to raise capital to fund its operations or refinance its debt obligations.
The Company's operations and drilling activity are concentrated in the Midland Basin of West Texas, an area of high industry activity, which may affect its ability to obtain the personnel, equipment, services, resources and facilities access needed to complete its development activities as planned or result in increased costs; such concentration also makes the Company vulnerable to risks associated with operating in a limited geographic area.
The Company's producing properties are geographically concentrated in the Midland Basin of West Texas. Industry activity is high in the Midland Basin and demand for and costs of personnel, equipment, power, services and resources remains high. Any delay or inability to secure the personnel, equipment, power, services and resources could result in oil, NGL and gas production volumes being below the Company's forecasted volumes. In addition, any such negative effect on production volumes, or significant increases in costs, could have a material adverse effect on the Company's results of operations, cash flow and profitability.
As a result of this concentration, the Company may be disproportionately exposed to the impact of delays or interruptions of operations or production in this area caused by external factors such as governmental regulation, state politics, market limitations, produced water disposal limitations, water, sand or power shortages, or extreme weather related conditions.
The Company may not be able to obtain access on commercially reasonable terms or otherwise to gathering systems, pipelines and other processing, fractionation, refining, storage, transportation and export facilities to market its oil, NGL and gas production.
The marketing of oil, NGL and gas production depends in large part on the availability, proximity and capacity of gathering systems, pipelines and other processing, fractionation, refining, storage, transportation and export facilities, as well as the existence of adequate markets. If there were insufficient capacity available on these systems, if these systems were unavailable to the Company or if access to these systems were to become commercially unreasonable, the price offered for the Company's production could be significantly depressed, or the Company could be forced to shut in some production or delay or discontinue drilling plans and commercial production following a discovery of hydrocarbons while it constructs its own facility or awaits the availability of third party facilities. The Company also relies (and expects to rely in the future) on facilities developed and owned by third parties in order to gather, store, process, transport, fractionate, refine, export and sell its oil, NGL and gas production. The Company's plans to develop and sell production from its oil and gas reserves could be materially and adversely affected by the inability or unwillingness of third parties to provide sufficient gathering, transportation, storage, processing, fractionation, refining or export facilities to the Company, especially in areas of planned expansion where such facilities do not currently exist. Additionally, certain of these challenges may be compounded by a high level of industry activity in the Permian Basin.
For example, following Hurricane Harvey in 2017 and Hurricanes Gustav and Ike in 2008, certain Permian Basin gas processors were forced to shut down their plants due to the inability of certain Texas Gulf Coast NGL fractionators to operate. The Company was able to produce its oil wells and vent or flare the associated gas; however, there is no certainty the Company will vent or flare gas in the future as a result of its emissions reduction efforts and potential changes in regulations. The amount of oil and gas that can be produced is subject to limitations in certain circumstances, such as pipeline interruptions due to scheduled and unscheduled maintenance, excessive pressure, physical damage to gathering, transportation, storage, processing, fractionation, refining or export facilities, or lack of capacity at such facilities. The Company has periodically experienced high line pressure at its tank batteries, which has occasionally led to the flaring of gas due to the inability of the gas gathering systems in the areas to support the increased gas production. The curtailments arising from these and similar circumstances may last for a few days, and in many cases, the Company may be provided only limited, if any, notice as to when these circumstances will arise and their duration.
To the extent that the Company enters into transportation contracts with pipelines that are subject to the United States Federal Energy Regulatory Commission ("FERC") regulation, the Company is subject to FERC requirements related to use of such capacity. Any failure on the Company's part to comply with FERC's regulations and policies related to pipeline transportation, reporting requirements or other regulations, and any failure to comply with a FERC-related pipeline's tariff, could result in the imposition of civil and criminal penalties. In addition, any changes in FERC or state regulations or requirements on pipeline transportation may result in increased transportation costs on pipelines that are subject to such regulation, thereby negatively impacting the Company's profitability.

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PIONEER NATURAL RESOURCES COMPANY
Additionally, in January 2024, the Biden Administration announced a moratorium on approvals of applications for LNG export authorizations by the U.S. Department of Energy ("DOE") while the DOE conducts studies related to the cumulative impact of LNG exports on domestic natural gas prices, climate change and other matters. The moratorium on these approvals is expected to continue for several months and it is uncertain as to timing or conclusions of these studies and the resulting effect on the DOE approval process related to applications for LNG export authorizations. As a result, it is difficult to predict whether changes to the DOE's approval process will have a negative effect on the prospects for future LNG export projects and on demand for domestic natural gas production that would be supported by these new LNG projects.
The Company relies on a limited number of purchasers for a majority of its products.
A limited number of companies purchase a majority of the Company's oil, NGLs and gas. The loss of a significant purchaser could have a material adverse effect on the Company's ability to sell its production.
The refining industry and export facilities may be unable to absorb U.S. oil production, and the ability to export oil is subject to suspension; in any such case, the resulting surplus could depress prices and restrict the availability of markets, which could materially and adversely affect the Company's results of operations.
Absent an expansion of U.S. refining and export capacity, an increase in U.S. production of oil could result in a surplus of these products in the U.S., which would likely cause prices for these commodities to fall and markets to constrict. Although U.S. law was changed in 2015 to permit the export of oil, exports may not occur if demand is lacking in foreign markets or the price that can be obtained in foreign markets does not support associated export capacity expansions, transportation and other costs. In such circumstances, the rate of return on the Company's capital projects would decline, possibly to levels that would make execution of the Company's drilling plans uneconomical, and a lack of market for the Company's products could require that the Company shut in some portion of its production. If this were to occur, the Company's production and cash flow could decrease, or could increase less than forecasted, which could have a material adverse effect on the Company's cash flow and profitability.
Under the 2015 federal law that lifted the ban on U.S. exports of oil, the President, in certain limited circumstances, has the authority to impose export licensing requirements or other restrictions on exports of oil from the U.S. for an initial period of up to one year, subject to extension. Such a limitation could result in a surplus of oil in the U.S., which would likely cause U.S. oil prices to fall.
Estimates of proved reserves and future net cash flows are not precise. The actual quantities and net cash flows of the Company's proved reserves may prove to be lower than estimated.
Numerous uncertainties exist in estimating quantities of proved reserves and future net cash flows therefrom. The estimates of proved reserves and related future net cash flows set forth in this Report are based on various assumptions, which may ultimately prove to be inaccurate.
Petroleum engineering is a subjective process of estimating underground accumulations of oil and gas that cannot be measured in an exact manner. Estimates of economically recoverable oil and gas reserves and estimates of future net cash flows depend upon a number of variable factors and assumptions, including the following:
historical production from the area compared with production from other producing areas;
the quality and quantity of available data;
the interpretation of that data;
the assumed effects of regulations by governmental agencies;
assumptions concerning future commodity prices; and
assumptions concerning future development costs, operating costs, severance, ad valorem and excise taxes, gathering, processing, transportation and fractionation costs and workover and remedial costs.
Because all proved reserve estimates are to some degree subjective, each of the following items may differ materially from those assumed in estimating proved reserves:
the quantities of oil and gas that are ultimately recovered;
the production costs incurred to recover the reserves;
the amount and timing of future development expenditures; and
future commodity prices.
Furthermore, different reserve engineers may make different estimates of proved reserves and cash flows based on the same available data. The Company's actual production, revenues and expenditures with respect to proved reserves will likely differ from the estimates, and the differences may be material.

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PIONEER NATURAL RESOURCES COMPANY
As required by the SEC, the estimated discounted future net cash flows from proved reserves are based on average prices preceding the date of the estimate and costs as of the date of the estimate, while actual future prices and costs may be materially higher or lower. Actual future net cash flows also will be affected by factors such as:
the amount and timing of actual production;
the level of future capital spending;
increases or decreases in the supply of or demand for oil, NGLs and gas; and
changes in governmental regulations or taxation.
Standardized Measure is a reporting convention that provides a common basis for comparing oil and gas companies subject to the rules and regulations of the SEC. In general, it requires the use of commodity prices that are based upon a historical 12-month unweighted average, as well as operating and development costs being incurred at the end of the reporting period. Consequently, it may not reflect the prices ordinarily received or that will be received for future oil and gas production because of seasonal price fluctuations or other varying market conditions, nor may it reflect the actual costs that will be required to produce or develop the oil and gas properties. Accordingly, estimates included herein of future net cash flows may be materially different from the future net cash flows that are ultimately received. In addition, the 10 percent discount factor, which is required by the SEC to be used in calculating discounted future net cash flows for reporting purposes, may not be the most appropriate discount factor based on interest rates in effect from time to time and risks associated with the Company or the oil and gas industry in general. Therefore, the estimates of discounted future net cash flows or Standardized Measure in this Report should not be construed as accurate estimates of the current market value of the Company's proved reserves.
Because the Company's producing wells decline continually over time, the Company will need to mitigate these declines through drilling and production enhancement initiatives and/or acquisitions.
Producing oil and gas reservoirs are characterized by declining production rates, which vary depending upon reservoir characteristics and other factors. Because the Company's producing wells decline continually over time as those wells are produced, the Company will need to mitigate these declines through drilling and production enhancement initiatives and/or acquisitions of additional recoverable reserves. There can be no assurance that the Company will be able to develop, exploit, find or acquire sufficient additional reserves to replace its current or future production.
A portion of the Company's total estimated proved reserves as of December 31, 2023 were undeveloped, and those proved reserves may not ultimately be developed.
As of December 31, 2023, 10 percent of the Company's total estimated proved reserves were undeveloped. Recovery of undeveloped proved reserves requires significant capital expenditures and successful drilling. The Company's reserve data assumes that the Company can and will make these expenditures and conduct these operations successfully, which assumptions may not prove to be correct. If the Company chooses not to spend the capital to develop these proved undeveloped reserves, or if the Company is not otherwise able to successfully develop these proved undeveloped reserves, the Company will be required to write-off these proved reserves. In addition, under the SEC's rules, because proved undeveloped reserves may be booked only if they relate to wells planned to be drilled within five years of the date of booking, the Company may be required to write-off any proved undeveloped reserves that are not developed within this five-year timeframe. The Company's future production levels and, therefore, its future cash flow and profitability will be impacted if it is not able to successfully develop its undeveloped leasehold acreage.
A substantial portion of the Company's acreage is currently held under leases that require it to establish and maintain production of hydrocarbons in paying quantities, and such leases are typically held by production from horizontal wells and/or older, lower-producing vertical wells. Unless production in paying quantities is maintained from existing lease-holding wells, or is established during the primary term of the lease and then maintained thereafter with respect to these leases, the leases will terminate, and the Company will lose the right to develop the undeveloped leasehold acreage.
The Company faces significant competition and some of its competitors have resources in excess of the Company's available resources.
The oil and gas industry is highly competitive. The Company competes with a large number of companies, producers and operators in a number of areas such as:
seeking to acquire oil and gas properties suitable for exploration or development;
marketing oil, NGL and gas production; and
seeking to acquire the equipment, services and expertise, including trained personnel, necessary to identify, evaluate, develop and operate its properties.

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PIONEER NATURAL RESOURCES COMPANY
Some of the Company's competitors are larger and have substantially greater financial and other resources than the Company, and as such, the Company may be at a competitive disadvantage in the identification, acquisition and development of properties that complement the Company's operations. The Company also faces competition from companies that supply alternative sources of energy, such as wind, solar power or other renewable energy. Competition is expected to increase and in certain cases, governments are providing tax advantages and other subsidies to support alternative energy sources or are mandating the use of specific fuels or technologies. Governments and other parties are also promoting research into new technologies to accelerate the implementation of alternative energy sources.
The Company's business could be materially and adversely affected by security threats, including cybersecurity threats, and other disruptions.
As an oil and gas producer, the Company faces various security threats, including cybersecurity threats to gain unauthorized access to, or control of, sensitive information or to render data or systems corrupted or unusable; threats to the security of the Company's facilities and infrastructure or third party facilities and infrastructure, such as processing plants and pipelines; and threats from terrorist acts. The potential for such security threats has subjected the Company's operations to increased risks that could have a material adverse effect on the Company's business. In particular, the Company's implementation of various procedures and controls to monitor and mitigate security threats and to increase security for the Company's information, facilities and infrastructure may result in increased capital and operating costs. Costs for insurance have also increased as a result of security threats, and insurance coverage has become more difficult to obtain, and may not be available at prices acceptable to the Company or at all. Moreover, there can be no assurance that such procedures and controls will be sufficient to prevent security breaches from occurring. If any of these security breaches were to occur, they could lead to losses of sensitive information, critical infrastructure or capabilities essential to the Company's operations and could have a material adverse effect on the Company's reputation, financial position, results of operations or cash flows.
Cybersecurity attacks in particular are becoming more sophisticated. The Company relies extensively on information technology systems, including internet sites, computer software, data hosting facilities and other hardware and software platforms, some of which are hosted by third parties, to assist in conducting its business. The Company's technologies systems and networks, and those of its vendors, suppliers, customers and other business associates may become the target of cybersecurity attacks, including without limitation denial-of-service attacks, malicious software, data privacy breaches by employees, insiders or others with authorized access, cyber or phishing-attacks, ransomware, attempts to gain unauthorized access to data and systems, and other electronic security breaches that could lead to disruptions in critical systems and materially and adversely affect the Company in a variety of ways, including the following:
unauthorized access to and release of seismic data, reserves information, strategic information or other sensitive or proprietary information, which could have a material adverse effect on the Company's ability to compete for oil and gas resources;
data corruption, communication interruption or other operational disruptions during drilling activities, which could result in the failure to reach the intended target or a drilling incident;
data corruption or operational disruptions of production infrastructure, which could result in loss of production or accidental discharges;
unauthorized access to and release of personal information of royalty owners, employees and vendors, or the data or confidential information of customers, suppliers or other third parties, which could expose the Company to allegations that it did not sufficiently protect that information;
a cybersecurity attack on a vendor or service provider, which could result in supply chain disruptions and could delay or halt operations;
a cybersecurity attack on third-party gathering, transportation, processing, fractionation, refining, storage or export facilities, which could delay or prevent the Company from transporting and marketing its production, resulting in a loss of revenues;
a cybersecurity attack involving commodities exchanges or financial institutions, which could slow or halt commodities trading, thus preventing the Company from marketing its production or engaging in derivative activities, resulting in a loss of revenues;
a cybersecurity attack on a communications network or power grid, which could cause operational disruptions resulting in the loss of revenues; and
a cybersecurity attack on the Company's automated and surveillance systems, which could cause a loss in production and potential environmental hazards.
These events could damage the Company's reputation and lead to financial losses from remedial actions, loss of business or potential liability. Additionally, certain cyber incidents, such as surveillance, may remain undetected for an extended period of time.

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PIONEER NATURAL RESOURCES COMPANY
A cyberattack or security breach could lead to significant consequences, including liability and harm to the Company from data privacy or cybersecurity claims, legal penalties under data privacy laws, regulatory fees, damage to its reputation, lasting loss of confidence in the Company, and additional expenses for remediation and for upgrading or improving its information systems to prevent future incidents. These outcomes could materially and negatively impact the Company's reputation, financial position, results of operations and cash flows. While the Company has experienced cybersecurity incidents in the past, including attempts to gain unauthorized access to data and systems, inadvertent data exposures, distributed denial-of-service attacks and phishing-attacks, the Company has not suffered any material losses as a result of such events. However, there can be no assurance that the Company will not suffer such losses in the future. Improvements in computer technology, breakthroughs in artificial intelligence, advancements in cryptography or other technological developments could potentially compromise the technology the Company relies on to protect confidential, personal or otherwise sensitive information. As cyber threats continue to evolve, the Company may be required to expend significant additional resources to continue to modify or enhance its protective measures or to investigate and remediate any information security vulnerabilities. Additionally, the continuing and evolving threat of cybersecurity attacks has resulted in evolving legal and compliance matters, including increased regulatory focus on prevention, which could require the Company to expend significant additional resources to meet such requirements. A failure or even a perceived failure by the Company or its service providers to comply with these data privacy and security laws, or any security incident that results in unauthorized access to, improper disclosure of or misappropriation of data, could result in significant liabilities, adverse publicity and damage to the Company's reputation. Such events could have a detrimental impact on the Company's business, financial health and operational performance.
Operational Risks
The Company's operations involve many operational risks, some of which could result in unforeseen interruptions to the Company's operations and substantial losses to the Company for which the Company may not be adequately insured.
The Company's operations, including (i) drilling and completion activities and (ii) water distribution, collection and disposal activities, are subject to all the risks incident to the oil and gas development and production business, including:
blowouts, cratering, explosions and fires;
adverse weather effects;
environmental hazards, such as NGL and gas leaks, oil and produced water spills, pipeline and vessel ruptures, encountering naturally occurring radioactive materials, and unauthorized discharges of toxic chemicals, gases, brine, well stimulation and completion fluids or other pollutants onto the surface or into the subsurface environment;
high costs, shortages or delivery delays of equipment, labor or other services or materials, such as water, power or sand for hydraulic fracturing;
facility or equipment malfunctions, failures or accidents;
title and other ownership discrepancies;
pipe or cement failures or casing collapses;
uncontrollable flows of oil, gas or water;
compliance with environmental and other governmental requirements, including executive actions and regulatory or legislative efforts;
lost or damaged oilfield workover and service tools;
surface access restrictions;
unusual or unexpected geological formations or pressure or irregularities in formations;
terrorism, vandalism, extreme physical acts of activism against fossil fuel interests and physical, electronic and cybersecurity breaches and global or national health concerns, including the outbreak of a pandemic or contagious disease; and
natural disasters.
The Company's overall exposure to operational risks may increase as its drilling activity expands, along with any associated increases in internally-provided water distribution, water collection, disposal or other services. In addition, any of these risks could materially and adversely impact the Company's service providers and suppliers, causing its supply chain to be interrupted, slowed or rendered inoperable. Any of these risks could result in substantial losses to the Company due to injury or loss of life, damage to or destruction of wells, production facilities or other property and natural resources, clean-up responsibilities, regulatory investigations and penalties and suspension of operations.
The Company may not be insured or is not fully insured against certain of the risks described above, either because such insurance is not available or because of the high premium costs and deductibles associated with obtaining such insurance. Additionally, the Company relies, to a large extent, on facilities owned and operated by third parties, and damage to or destruction of those third-party facilities could adversely affect the ability of the Company to produce, gather, process, fractionate, refine, store, transport, export and sell its hydrocarbons.

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PIONEER NATURAL RESOURCES COMPANY
Exploration and development drilling involve substantial costs and risks and may not result in commercially productive reserves.
Drilling involves numerous risks, including the risk that no commercially productive oil or gas reservoirs will be encountered. The cost of drilling, completing and operating wells is often uncertain and drilling operations may be curtailed, delayed or canceled, or become costlier, as a result of a variety of factors, including:
unexpected drilling conditions;
unexpected pressure or irregularities in formations;
equipment failures or accidents;
construction delays;
fracture stimulation accidents or failures;
adverse weather conditions;
restricted access to land for drilling or laying pipelines;
title defects;
lack of available gathering, transportation, processing, fractionation, storage, refining or export facilities;
lack of available capacity on interconnecting transmission pipelines;
access to, and the cost and availability of, the equipment, services, resources and personnel required to complete the Company's drilling, completion and operating activities; and
restrictions, delays or cancellations imposed by or resulting from compliance with or changes in environmental and other governmental, regulatory or contractual requirements.
The Company's future drilling activities may not be successful and, if unsuccessful, the Company's proved reserves and production would decline, which could have an adverse effect on the Company's future results of operations and financial condition. While all drilling, whether developmental, extension or exploratory, involves these risks, exploratory and extension drilling involves greater risks of dry holes or failure to find commercial quantities of hydrocarbons. The Company expects that it will continue to recognize exploration and abandonments expense in 2024.
Part of the Company's strategy involves using some of the latest available horizontal drilling and completion techniques, which involve risks and uncertainties in their application.
The Company's operations involve utilizing some of the latest drilling and completion techniques as developed by it and its service providers. Risks that the Company faces while drilling horizontal wells include, but are not limited to, the following:
landing the wellbore in the desired drilling zone;
staying in the desired drilling zone while drilling horizontally through the formation;
running casing the entire length of the wellbore; and
being able to run tools and other equipment consistently through the horizontal wellbore.
Risks that the Company faces while completing wells include, but are not limited to, the following:
the ability to fracture stimulate the planned number of stages;
the ability to run tools the entire length of the wellbore during completion operations; and
the ability to successfully clean out the wellbore after completion of the final fracture stimulation stage.
The Company utilizes multi-well pad drilling, and wells drilled on a pad are not placed on production until all wells on the pad are drilled and completed. In addition, problems affecting a single well could adversely affect production from all of the wells on the pad. As a result, multi-well pad drilling can cause delays in the scheduled commencement of production, or interruptions in ongoing production. These delays or interruptions may cause volatility in the Company's operating results. Further, any delay, reduction or curtailment of the Company's development and producing operations due to operational delays caused by multi-well pad drilling could result in the loss of acreage through lease expiration.
Drilling in emerging areas is more uncertain than drilling in areas that are more developed and have a longer history of established drilling operations. New discoveries and emerging formations have limited or no production history and, consequently, the Company is more limited in assessing future drilling results in these areas. If the Company's drilling results are worse than anticipated, the return on investment for a particular project may not be as attractive as anticipated and the Company may recognize noncash charges to reduce the carrying value of its unproved properties in those areas.

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The Company's expectations for future drilling activities will be realized over several years, making them susceptible to uncertainties that could materially alter the occurrence or timing of such activities.
The Company has identified drilling locations and prospects for future drilling opportunities, including development, exploratory, extension and infill drilling activities. These drilling locations and prospects represent a significant part of the Company's future drilling plans. For example, the Company's proved reserves as of December 31, 2023 include proved undeveloped reserves and proved developed non-producing reserves of 122 MMBbls of oil, 78 MMBbls of NGLs and 435 Bcf of gas. The Company's ability to drill and develop these locations depends on a number of factors, including the availability and cost of capital, regulatory approvals, negotiation of agreements with third parties, commodity prices, costs, access to and availability of equipment, services, resources and personnel and drilling results. There can be no assurance that the Company will drill these locations or that the Company will be able to produce oil or gas reserves from these locations or any other potential drilling locations. Well results vary by formation and geographic area, and the Company generally prioritizes its drilling activities to focus on remaining locations that are believed to offer the highest return. Changes in the laws or regulations on which the Company relies in planning and executing its drilling programs could materially and adversely impact the Company's ability to successfully complete those programs. For example, under current Texas laws and regulations, the Company may receive permits to drill, and may drill and complete, certain horizontal wells that traverse one or more units and/or leases; a change in those laws or regulations could materially and adversely impact the Company's ability to drill those wells. Because of these uncertainties, the Company cannot give any assurance as to the timing of these activities or that they will ultimately result in the realization of proved reserves or meet the Company's expectations for success. As such, the Company's actual drilling activities may materially differ from the Company's current expectations, which could have a material adverse effect on the Company's proved reserves, financial condition and results of operations.
The Company's operations are substantially dependent upon the availability of water and its ability to dispose of produced water gathered from drilling and production activities. Restrictions on the Company's ability to obtain water or dispose of produced water may have a material adverse effect on its financial condition, results of operations and cash flows.
Water is an essential component of the Company's drilling and hydraulic fracturing processes. Limitations or restrictions on the Company's ability to secure sufficient amounts of water (including limitations resulting from natural causes such as drought), could materially and adversely impact its operations. Severe drought conditions can result in local water districts taking steps to restrict the use of water in their jurisdiction for drilling and hydraulic fracturing in order to protect the local water supply. If the Company is unable to obtain water to use in its operations from local sources, it may need to be obtained from new sources and transported to drilling sites, resulting in increased costs, which could have a material adverse effect on its financial condition, results of operations and cash flows.
In addition, the Company must dispose of the fluids produced from oil and gas production operations, including produced water, which it does directly or through the use of third party vendors. The legal requirements related to the disposal of produced water into a non-producing geologic formation by means of underground injection wells are subject to change based on concerns of the public or governmental authorities regarding such disposal activities. One such concern arises from seismic events near underground disposal wells that are used for the disposal of produced water resulting from oil and gas activities. In 2016, the United States Geological Survey identified Texas as being among the states with areas of increased rates of induced seismicity that could be attributed to fluid injection or oil and gas extraction. In addition, a number of lawsuits have been filed alleging that disposal well operations have caused damage to neighboring properties or otherwise violated state and federal rules regulating waste disposal. In response to these concerns, regulators in some states have imposed, or are considering imposing, additional requirements in the permitting of produced water disposal wells to assess any relationship between seismicity and the use of such wells. For example, in Texas, the Texas Railroad Commission has adopted rules governing the permitting or re-permitting of wells used to dispose of produced water and other fluids resulting from the production of oil and gas in order to address these seismic activity concerns within the state. Among other things, these rules require companies seeking permits for disposal wells to provide seismic activity data in permit applications, provide for more frequent monitoring and reporting for certain wells and allow the state to modify, suspend or terminate permits on grounds that a disposal well is likely to be, or determined to be, causing seismic activity.
In response to recent seismic activity in the Midland Basin, the Texas Railroad Commission has pursued a series of actions commencing in the latter half of 2021, including suspending deep disposal activity and curtailing certain shallow disposal activities in the areas of heightened seismic activity. Such restrictions have not had a material impact on the Company's operations to date, but further restrictions across the basin as a result of more stringent regulations or legal directives, potential litigation or other developments could materially impact its ability to dispose of produced water, which could have a material adverse effect on the Company's business, financial condition and results of operations.

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The Company's use of seismic data is subject to interpretation and may not accurately identify the presence of oil and gas, which could materially and adversely affect the results of its future drilling operations.
Even when properly used and interpreted, seismic data and visualization techniques are only tools used to assist geoscientists in identifying subsurface structures and hydrocarbon indicators and do not enable the interpreter to know whether hydrocarbons are, in fact, present in those structures. As a result, the Company's drilling activities may not be successful or economic. In addition, the use of advanced technologies, such as 3-D seismic data, requires greater pre-drilling expenditures than traditional drilling strategies, and the Company could incur losses as a result of such expenditures.
The Company's gas processing and gathering systems are subject to operational and regulatory risks, which could result in significant damages and the loss of revenue.
As of December 31, 2023, the Company owns interests in 11 gas processing plants, including the related gathering systems. There are significant risks associated with the operation of gas processing plants and the associated gathering systems. Gas and NGLs are volatile and explosive and may include carcinogens. Damage to or improper operation of gas processing plants or gathering systems could result in an explosion or the discharge of toxic gases, which could result in significant damage claims in addition to interrupting a revenue source.
Moreover, while the Company's gas processing and gathering systems generally are not currently subject to FERC or state regulation with respect to rates or terms and conditions of service, there can be no assurance that such processing and gathering operations will continue to be unregulated in the future. Although these facilities may not be directly regulated, other laws and regulations may affect the availability of gas for gathering and processing, such as state regulations regarding production rates and the maximum daily production allowable from gas wells, which could impact the Company's business in these areas. Such regulation could result in additional costs and reduced revenues.
Financial Risks
The Company's actual production could differ materially from its forecasts.
From time to time, the Company provides forecasts of expected quantities of future oil and gas production and other financial and operating results. These forecasts are based on a number of estimates and assumptions, including that none of the risks associated with the Company's oil and gas operations summarized in this "Item 1A. Risk Factors" occur. Production forecasts, specifically, are based on assumptions such as:
expectations of production from existing wells and future drilling activity;
expectations of facility or equipment malfunctions based on historical results;
expectations of seasonal weather effects;
expectations of commodity prices, which could experience significant volatility;
expected well costs; and
the assumed effects of regulation by governmental agencies, which could make certain drilling activities or production uneconomical.
Should any of these assumptions prove inaccurate, or should the Company's development plans change, actual production could be materially and adversely affected.
The Company could experience periods of higher costs if commodity prices rise. These increases could reduce the Company's profitability, cash flow and ability to complete development activities as planned.
Historically, the Company's capital and operating costs have risen during periods of increasing oil, NGL and gas prices. These cost increases result from a variety of factors beyond the Company's control, such as increases in the cost of electricity, steel and other raw materials that the Company and its vendors rely upon; increased demand for labor, services and materials as drilling activity increases; and increased production and ad valorem taxes. Costs may rise faster than increases in the Company's revenue if commodity prices rise, thereby negatively impacting the Company's profitability, cash flow and ability to complete development activities as scheduled and on budget. Moreover, inflation is an area of economic concern with price increases in equipment, materials, labor and distribution costs leading to possible negative impacts on the Company's financial condition and results of operations.
The Company is a party to debt instruments, a Credit Facility and other financial commitments that may limit the Company's ability to fund future business and financing activities.
The Company is a borrower under fixed rate senior and convertible notes and maintains a revolving corporate credit facility (the "Credit Facility") that was undrawn as of December 31, 2023. The terms of the Company's borrowings specify

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scheduled debt repayments and require the Company to comply with certain associated covenants and restrictions. The Company's ability to comply with the debt repayment terms, associated covenants and restrictions is dependent on, among other things, factors outside the Company's direct control, such as commodity prices and interest rates. In addition, from time to time, the Company enters into arrangements and transactions that can give rise to material off-balance sheet obligations, including (i) firm purchase, transportation, storage and fractionation commitments, (ii) open purchase commitments and (iii) contractual obligations for which the ultimate settlement amounts are not fixed and determinable. The Company's financial commitments could have important consequences to its business including, but not limited to, the following:
the incurrence of charges associated with unused commitments if actual activities do not meet the Company's expectations at the time such commitments are entered into;
increasing its vulnerability to adverse economic and industry conditions;
limiting its flexibility to plan for, or react to, changes in its business and industry;
limiting its ability to fund future development activities or engage in future acquisitions; and
placing it at a competitive disadvantage compared to competitors that have less debt and/or fewer financial commitments.
The Company's ability to obtain additional financing is also affected by the Company's debt credit ratings, competition for available debt financing and certain terms set forth in the Merger Agreement. A ratings downgrade could materially and adversely impact the Company's ability to access debt markets, increase the borrowing cost under the Company's Credit Facility and the cost of future debt and potentially require the Company to post letters of credit or other forms of credit support for certain obligations.
The Company's return of capital strategies may be changed at the discretion of the Board and are subject to certain considerations.
Dividends are authorized and determined by the Board at its sole discretion, but such authorizations are subject to a number of considerations, including:
cash available for distribution;
the Company's results of operations and anticipated future results of operations;
the Company's financial condition, especially in relation to its anticipated future capital needs;
the level of cash reserves the Company maintains to fund future capital expenditures;
certain terms set forth in the Merger Agreement; and
other factors the Board deems relevant.
The Company can provide no assurance that dividends will be authorized or declared in the future or as to the amount of any future dividends. The Merger Agreement provides certain restrictions on future base and variable dividend declarations, including an agreement that the Company will no longer pay a variable dividend after distributing 50 percent of the normal variable dividend attributable to fourth quarter 2023 results. With limited exceptions, the Merger Agreement precludes the Company from future repurchases or acquisition of the Company's common shares, including repurchases under the Company's share repurchase program. The limitations on the Company's dividend payout and share repurchase program while the Merger is pending, or any such changes to the Company's dividend policy or share repurchase program if the Merger is not consummated, could adversely affect the total return of an investment in and have a material adverse effect on the market price of the Company's common shares.
A failure by purchasers of the Company's production to satisfy their obligations to the Company could have a material adverse effect on the Company's results of operation.
The Company relies on a limited number of purchasers to purchase a majority of its products. To the extent that purchasers of the Company's production rely on access to the credit or equity markets to fund their operations, there is a risk that those purchasers could default on their contractual obligations to the Company if such purchasers were unable to access the credit or equity markets for an extended period of time. If for any reason the Company were to determine that it was probable that some or all of the accounts receivable from any one or more of the purchasers of the Company's production were uncollectible, the Company would recognize a charge in the earnings of that period for the probable loss.
Pioneer's ability to utilize its U.S. net operating loss carryforwards to offset future income taxes may be limited.
As of December 31, 2023, Pioneer had U.S. federal net operating loss carryforwards ("NOLs") of $779 million which were incurred on or after January 1, 2018. These will not expire and will be carried forward indefinitely under current tax law. Pioneer's ability to utilize these NOLs and other tax attributes to reduce future taxable income depends on many factors, including its future income, which cannot be assured. Section 382 of the Code ("Section 382") generally imposes an annual

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limitation on the amount of NOLs that may be used to offset taxable income when a corporation has undergone an "ownership change" (as determined under Section 382). An ownership change generally occurs if one or more shareholders (or groups of shareholders) who are each deemed to own at least five percent of such corporation's shares increase their ownership by more than 50 percentage points over their lowest ownership percentage within a rolling three-year period. In the event that an ownership change were to occur with respect to Pioneer, including as a result of the completion of the Merger, the utilization of Pioneer's NOLs would be subject to an annual limitation under Section 382, generally determined, subject to certain adjustments, by multiplying (i) the fair market value of Pioneer's shares at the time of the ownership change by (ii) a percentage approximately equivalent to the yield on long-term tax-exempt bonds during the month in which the ownership change occurs. Any unused annual limitation may be carried over to later years.
The Company periodically evaluates its proved and unproved oil and gas properties, goodwill and other long-lived assets for impairment and could be required to recognize noncash charges in the earnings of future periods.
Significant or extended price declines could result in the Company having to make downward adjustments to the carrying value of its proved oil and gas properties. The Company performs assessments of the recoverability of its oil and gas properties whenever events or circumstances indicate that the carrying values of those assets may not be recoverable. In order to perform these assessments, management uses various observable and unobservable inputs, including the Company's outlook for (i) proved reserves and risk-adjusted probable and possible reserves, (ii) commodity prices, (iii) production costs, (iv) capital expenditures and (v) production. To the extent such tests indicate a reduction of the estimated useful life or estimated future cash flows of the Company's oil and gas properties, the carrying value may not be recoverable and therefore an impairment charge would be required to reduce the carrying value of the proved properties to their fair value. The Company may incur impairment charges in the future, which could materially affect the Company's results of operations in the period incurred.
GAAP requires periodic evaluation of unproved oil and gas property costs on a project-by-project basis. These evaluations are affected by the results of current and planned exploration activities, commodity price outlooks, planned future sales or expiration of all or a portion of the leases and the contracts and permits appurtenant to such projects. If the Company determines that a project is not expected to be developed based on the results of these evaluations, the Company will recognize a noncash charge in earnings in the period in which the unproved oil and gas properties is determined to be impaired.
Goodwill is assessed for impairment annually during the third quarter and whenever facts or circumstances indicate that the carrying value of the Company's goodwill may be impaired, which may require an estimate of the fair values of the reporting unit's assets and liabilities. Those assessments may be affected by (i) positive or negative reserve adjustments, (ii) results of drilling activities, (iii) the Company's outlook for commodity prices and costs and expenses, (iv) changes in the Company's market capitalization, (v) changes in the Company's weighted average cost of capital and (vi) changes in income taxes. If the fair value of the reporting unit's net assets is not sufficient to fully support the goodwill balance in the future, the Company will reduce the carrying value of goodwill for the impaired value, with a corresponding noncash charge to earnings in the period in which goodwill is determined to be impaired. If incurred, an impairment of goodwill could result in a material noncash charge to the Company's earnings in the period in which goodwill is determined to be impaired.
See Note 4 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Health, Safety and Environmental Risks
The Company's operations are subject to a series of risks arising out of the threat of climate change, energy conservation measures, or initiatives that stimulate demand for alternative forms of energy that could result in increased operating costs, limit the areas in which oil and gas production may occur and reduce demand for the oil and gas production it provides.
The threat of climate change continues to attract considerable attention in the United States and around the world. Numerous proposals have been made and could continue to be made at the international, national, regional and state levels of government to monitor and limit existing emissions of GHGs as well as to restrict or eliminate such future emissions. These efforts have included consideration of cap-and-trade programs, carbon taxes, GHG disclosure obligations and regulations that directly limit GHG emissions from certain sources. Moreover, President Biden highlighted addressing climate change as a priority of his administration, issued several executive orders related to climate change and recommitted the United States to long-term international goals to reduce emissions, and continues to require the incorporation of climate change considerations into executive agency decision-making. In recent years the U.S. Congress has considered legislation to reduce emissions of GHGs, including methane, a primary component of natural gas, and carbon dioxide, a byproduct of the burning of natural gas. For example, the Inflation Reduction Act of 2022 (the "IRA"), which appropriates significant federal funding for renewable energy initiatives and, for the first time ever, imposes a fee on GHG emissions from certain facilities, was signed into law in August 2022. The methane emissions fee and funding provisions of the law could increase operating costs within the oil and

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gas industry and accelerate the transition away from fossil fuels, which could in turn adversely affect the Company's business and results of operations.
The EPA has adopted regulations that, among other things, establish construction and operating permit reviews for GHG emissions from certain large stationary sources, require the monitoring and annual reporting of GHG emissions from certain petroleum and natural gas system sources in the United States (the regulations for which are currently undergoing revision to support implementation of the IRA's methane emissions fee provision), impose standards for reducing methane emissions from oil and gas operations through limitations on venting and flaring and the implementation of enhanced emission leak detection and repair requirements, and together with the United States Department of Transportation, implement GHG emissions limits on vehicles manufactured for operation in the United States. The regulation of methane emissions from oil and gas facilities has been subject to considerable attention in recent years. In December 2023, the EPA finalized revised methane rules for new, modified, and reconstructed upstream and midstream facilities under New Source Performance Standards ("NSPS") Subpart OOOOb, as well as new standards for existing sources under NSPS Subpart OOOOc. The final rules expand the scope of regulated oil and gas sources beyond those currently regulated under the existing NSPS Subpart OOOOa. Under the final rules, states have two years to prepare and submit plans to impose methane and volatile organic compound emission controls for existing sources. The presumptive standards established under the final rules are generally the same for both new and existing sources and include enhanced leak detection survey requirements using optical gas imaging and other advanced monitoring technologies, the reduction of emissions by 95 percent through capture and control systems, zero-emission requirements for specific equipment, so-called green well completion requirements and the establishment of a "super emitter" response program which would allow certified third parties to report large emission events to the EPA, triggering additional investigation, reporting and repair obligations, among other more stringent operational and maintenance requirements. Fines and penalties for violations of these rules could be substantial. However, compliance with these rules will likely exempt the Company from paying the methane fee imposed by the IRA. These newly adopted final rules are also likely to face legal challenges. Separately, the BLM has also proposed rules to limit methane emissions for oil and gas operations on federal lands. Additionally, in January 2023 the Council on Environmental Quality released updated guidance for federal agency consideration of GHG emissions and climate change impacts in environmental reviews. While the Company cannot predict the ultimate impact and compliance costs of these final and proposed regulatory requirements, any such requirements have the potential to adversely affect the Company's operations, financial results and cash flows.
At the international level, the United Nations ("UN") -sponsored "Paris Agreement" requires member states to submit non-binding, individually-determined reduction goals known as Nationally Determined Contributions every five years after 2020. President Biden has recommitted the United States to the Paris Agreement and, in April 2021, announced a goal of reducing the United States' emissions by 50 to 52 percent below 2005 levels by 2030. Various U.S. states and local governments have also publicly committed to furthering the goals of the Paris Agreement. Additionally, at the UN Climate Change Conference of Parties ("COP26"), held in November 2021, the United States and the European Union jointly announced the launch of a Global Methane Pledge, an initiative committing to a collective goal of reducing global methane emissions by at least 30 percent from 2020 levels by 2030, including "all feasible reductions" in the energy sector. COP26 concluded with the finalization of the Glasgow Climate Pact, which stated long-term global goals (including those in the Paris Agreement) to limit the increase in the global average temperature and emphasized reductions in GHG emissions. These goals were reaffirmed at the November 2022 Conference of Parties, at which the U.S. also announced, in conjunction with the European Union and other partner countries, that it would develop standards for monitoring and reporting methane emissions to help create a market for low methane-intensity natural gas. In December 2023, the United Arab Emirates hosted the 28th session of the Conference of Parties where parties signed on to an agreement to transition "away from fossil fuels in energy systems in a just, orderly and equitable manner" and increase renewable energy capacity so as to achieve net zero by 2050, although no timeline for doing so was set. The full impact of these actions, and any legislation or regulation promulgated to fulfill the United States' commitments thereunder, is uncertain at this time, and it is unclear what additional initiatives may be adopted or implemented that may have adverse effects upon the Company's operations.
Governmental, scientific and public concern over the threat of climate change arising from GHG emissions has resulted in increasing political risks in the United States, including climate change related pledges made by certain candidates elected to public office. President Biden has issued several executive orders focused on addressing climate change, including items that may impact costs to produce, or demand for, oil and gas. Additionally, in November 2021, the Biden Administration released "The Long-Term Strategy of the United States: Pathways to Net-Zero Greenhouse Gas Emissions by 2050," which establishes a roadmap to net zero emissions in the United States by 2050 through, among other things, improving energy efficiency, decarbonizing energy sources via electricity, hydrogen and sustainable biofuels, eliminating subsidies provided to the fossil fuel industry, reducing non-CO2 GHG emissions and increasing the emphasis on climate-related risks across government agencies and economic sectors. The Biden Administration has also called for revisions and restrictions to the leasing and permitting programs for oil and gas development on federal lands and, for a time, suspended federal oil and gas leasing activities. The DOI's comprehensive review of the federal leasing program resulted in recommendations that were ultimately implemented as

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part of the IRA, including a reduction in the volume of onshore land held for lease, increased minimum bid limits and an increased royalty rate. Additionally, in July 2023 the Council on Environmental Quality proposed revisions to the National Environmental Protection Act implementing regulations that would expand environmental review requirements to include analyses of a project's cumulative effects on climate change, consideration of any disproportionate impact on communities with environmental justice concerns and enhanced project obligations for environmental mitigation measures. Other actions that could be pursued by the Biden Administration include the imposition of more restrictive requirements for the construction and permitting of pipeline infrastructure and LNG export facilities, as well as more restrictive GHG emissions limits for oil and gas facilities. In January 2024, the Biden Administration paused authorizations for new LNG exports to certain countries pending a review of the supporting analyses by the DOE, which is expected to include climate change considerations. Any of these actions or new or proposed federal or state policies eliminating support for or restricting the development activities of the oil and gas sector while incentivizing or subsidizing alternative energy sources could reduce demand for the Company's products, increase its operating costs, or otherwise adversely impact the Company's financial performance.
Litigation risks are also increasing as a number of parties have sought to bring suit against various oil and natural gas companies in state or federal court, alleging, among other things, that such companies created public nuisances by producing fuels that contributed to climate change or alleging that the companies have been aware of the adverse effects of climate change for some time but defrauded their investors or customers by failing to adequately disclose those impacts. Should the Company be targeted by any such litigation, it may incur liability, which, to the extent that societal pressures or political or other factors are involved, could be imposed without regard to causation or contribution to the asserted damage, or to other mitigating factors. An unfavorable ruling in any such case could significantly impact the Company's operations and reputation and could have an adverse impact on the Company's financial condition.
There are also increasing financial risks for fossil fuel producers as shareholders and bondholders currently invested in fossil fuel energy companies may elect in the future to shift some or all of their investments into non-fossil fuel related sectors. Certain institutional lenders who provide financing to fossil fuel energy companies also have become more attentive to sustainable lending practices and have shifted their investment practices to favor non-fossil fuel related energy sources, such as wind and solar, and some of them may elect not to provide funding to the oil and gas sector. Many of the largest U.S. banks have made net zero carbon emission commitments and have announced that they will be assessing financed emissions across their portfolios and taking steps to quantify and reduce those emissions. There is also a risk that financial institutions will be pressured or required to adopt policies that have the effect of reducing the capital provided to the oil and gas sector. In 2023 the six largest U.S. banks performed a pilot climate scenario analysis exercise, pursuant to Federal Reserve instructions. Furthermore, the SEC has proposed rules that would mandate extensive disclosure of climate risks, including financial impacts, related governance and strategy and GHG emissions, for all U.S.-listed public companies. Enhanced climate disclosure requirements could result in additional legal and accounting costs and accelerate the trend of certain stakeholders and lenders restricting or seeking more stringent conditions with respect to their investments in carbon-intensive sectors. States may also pass laws imposing more expansive disclosure requirements for climate-related risks. Separately, the SEC has announced it is scrutinizing existing climate change-related disclosures in public filings, increasing the potential for enforcement if the SEC were to allege an issuer's existing climate disclosures misleading or deficient. New laws, regulations or enforcement initiatives related to the disclosure of climate-related risks could lead to reputational or other harm with customers, regulators, investors, lenders and other stakeholders and could also increase litigation risks. Any material reduction in the capital available to the oil and gas sector could make it more difficult to secure funding for and result in the restriction, delay or cancellation of the Company's exploration, development, and production activities, which could impact the Company's financial performance.
Finally, climate change may also result in various physical risks, such as the increased frequency or severity of extreme weather events (including storms, droughts, floods and wildfires) or changes in meteorological and hydrological patterns, that could adversely impact the Company's operations and supply chains. Such physical risks could result in damage to the Company's facilities or indirectly adversely impact the Company's supply chain or operations through, for example, water use curtailments in response to drought or changes to the amount, timing or location of demand for the Company's products as a result of shifting meteorological conditions. While the Company's consideration of changing climatic conditions and inclusion of safety factors in the design and operation of the Company's facilities is intended to reduce the uncertainties that climate change and other events may potentially introduce, the Company's ability to mitigate the adverse impacts of these events depends in part on the effectiveness of the Company's disaster preparedness and response and business continuity planning, which may have not considered or prepared for every eventuality.
The nature of the Company's assets and production operations may impact the environment or cause environmental contamination, which could result in material liabilities to the Company.
The Company's assets and production operations may give rise to significant environmental costs and liabilities as a result of the Company's handling of petroleum hydrocarbons and wastes, because of air emissions and water discharges related to its operations, and due to past industry operations and waste disposal practices. The Company's oil and gas business involves

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the generation, handling, treatment, storage, transport and disposal of wastes, hazardous substances and petroleum hydrocarbons and is subject to environmental hazards, such as oil and produced water spills, NGL and gas leaks, pipeline and vessel ruptures and unauthorized discharges of such wastes, substances and hydrocarbons, that could expose the Company to substantial liability due to pollution and other environmental damage. The Company could also incur costs and liabilities arising out of the unintended release of its flowback water or certain other oilfield fluids that the Company injects or has injected into non-producing formations. Another consequence of such contamination may be lawsuits alleging that its operations have caused damage to neighboring properties or otherwise violated state and federal rules regulating waste disposal. The occurrence of any one or more of these developments could have a material adverse effect on the Company's business, financial condition and results of operations.
The Company's hydraulic fracturing and former sand mining operations may result in silica-related health issues and litigation that could have a material adverse effect on the Company.
The Company routinely conducts hydraulic fracturing in its drilling and completion programs, which activity requires the management and use of significant volumes of sand. Additionally, the Company owns and formerly operated certain sand mining operations. The inhalation of respirable crystalline silica dust is associated with the lung disease silicosis. There is evidence of an association between crystalline silica exposure or silicosis and lung cancer and a possible association with other diseases, including immune system disorders, such as scleroderma. These health risks have been, and may continue to be, a significant issue confronting the commercial sand industry. The actual or perceived health risks of mining, processing and handling sand could materially and adversely affect the Company through the threat of product liability or personal injury lawsuits, enacted OSHA silica regulations and increased scrutiny by federal, state and local regulatory authorities. The occurrence of significant silica-related health issues as well as any pending or future claims or inadequacies of insurance coverage or contractual indemnification arising out of such issues could have a material adverse effect on the Company's results of operations.
Increasing attention to ESG matters may impact the Company's business.
Businesses across all industries are facing increasing scrutiny from stakeholders related to their ESG practices. Businesses that do not adapt to or comply with investor or stakeholder expectations and standards, which are continuing to evolve, or businesses that are perceived to have not responded appropriately to the growing concern for ESG issues, regardless of whether there is a legal requirement to do so, may suffer from reputational damage and the business, financial condition and/or share price of such business entity could be materially and adversely affected. Increasing attention to climate change, increasing societal expectations on businesses to address climate change and potential consumer use of substitutes to energy commodities may result in increased costs, reduced demand for the Company's hydrocarbon products, reduced profits, increased investigations and litigation and negative impacts on its share price and access to capital markets. Increasing attention to climate change, for example, may result in demand shifts for the Company's hydrocarbon products, additional governmental investigations and private litigation, an increase in shareholder activism as shareholders may attempt to effect changes to the Company's business or governance, whether by shareholder proposals, public campaigns, proxy solicitations or otherwise, or constraints in sources of capital as certain financial institutions, institutional investors and other sources of capital limit or eliminate their investment in oil and gas activities.
As part of the Company's ongoing effort to enhance its ESG efforts, its Board has established a Sustainability and Climate Oversight Committee, which is charged with the ongoing oversight of the Company's corporate climate-related risk analysis, as well as its Sustainability Report and other related activities. The Company has established an aspirational long-term net zero (Scope 1 and Scope 2) emissions ambition to further strengthen the Company's ESG performance, with interim targets as follows: (i) reduce its methane emissions intensity by 75 percent by 2030 and its Scope 1 and Scope 2 GHG emissions intensity by 50 percent by 2030, from a 2019 baseline and (ii) maintain a flaring intensity standard of less than one percent of gas produced and end routine flaring by 2025. The Company has also set an aspirational goal to reduce the freshwater used in its completions operations to 20 percent by 2026. While the Company may elect to establish and revise various voluntary ESG targets now or in the future, such targets are aspirational. The Company may not be able to meet such targets in the manner or on such a timeline as initially contemplated, including as a result of unforeseen material costs or technical difficulties associated with achieving such results. Some of these targets are dependent on or influenced by factors out of the control of the Company, including, but not limited to, the ability of suppliers to provide new equipment on schedule and the build out of sufficient electricity capacity in the areas the Company operates. Further, to the extent the Company elected to pursue such targets and was able to achieve the desired target levels, such achievement may have been accomplished as a result of entering into various contractual arrangements, including the purchase of various credits or offsets that may be deemed to mitigate its ESG impact instead of actual changes in ESG performance. However, even in those cases the Company cannot guarantee that sufficient quality environmental credits or offsets the Company does purchase will not subsequently be determined to have failed to result in GHG emission reductions for reasons out of the Company's control. Given the uncertainties related to the use of emerging

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technologies, the state of the markets for and availability of verified quality carbon offsets, the Company cannot predict whether or not it will be able to timely meet its net zero ambition, if at all.
In addition, voluntary disclosures regarding ESG matters, as well as any ESG disclosures mandated by law, could result in private litigation or government investigation or enforcement action regarding the sufficiency or validity of such disclosures. Moreover, the failure or a perception (whether or not valid) of failure to implement ESG strategies or achieve ESG goals or commitments, including any GHG reduction or neutralization goals or commitments, could result in private litigation and damage the Company's reputation, cause investors or consumers to lose confidence in the Company and negatively impact the Company's operations. While the Company may participate in various voluntary frameworks and certification programs to improve the ESG profile of its operations and services, such as the Company's participation in Project Veritas, The Environmental Partnership and OGMP 2.0, the Company cannot guarantee that such participation or certification will have the intended results on its ESG profile. Notwithstanding the Company's election to pursue aspirational targets now or in the future, it may receive pressure from investors, lenders or other groups to adopt more aggressive climate or other ESG-related goals, but the Company cannot guarantee it will be able to implement such goals because of potential costs or technical or operational obstacles. Conversely, governments and private parties are also increasingly filing lawsuits or initiating regulatory action based on allegations that certain public statements regarding ESG-related matters and practices by companies are "greenwashing," i.e. misleading information or false claims overstating potential ESG benefits. For example, in March 2021, the SEC established the Climate and ESG Task Force in the Division of Enforcement to identify and address potential ESG-related misconduct, including greenwashing. Similar issues can also arise relating to aspirational statements such as net-zero or carbon neutrality targets that are made without an adequate basis to support such statements. While the Company is currently not a party to any of these lawsuits, they present a high degree of uncertainty regarding the extent to which oil and gas companies face an increased risk of liability stemming from climate change or ESG disclosures and practices.
Furthermore, organizations that provide information to investors on corporate governance and related matters have developed ratings processes for evaluating business entities on their approach to ESG matters. Currently, there are no universal standards for such scores or ratings, but the importance of sustainability evaluations is becoming more broadly accepted by investors and shareholders. Such ratings are used by some investors to inform their investment and voting decisions. Additionally, certain investors use these scores to benchmark businesses against their peers and if a business entity is perceived as lagging, these investors may engage with such entities to require improved ESG disclosure or performance. Moreover, certain members of the broader investment community may consider a business entity's sustainability score as a reputational or other factor in making an investment decision. Consequently, a low sustainability score could result in exclusion of the Company's shares from consideration by certain investment funds, engagement by investors seeking to improve such scores and a negative perception of the Company's operations by certain investors. Additionally, though the Company believes it can achieve its voluntary ESG targets and goals, any failure to realize or the perception of a failure to realize voluntary targets or long-term goals, could lead to a negative perception of the Company.
Regulatory Risks
The Company's operations are subject to stringent environmental, oil and gas-related and occupational safety and health legal requirements that could increase its costs of doing business and result in operating restrictions, delays or cancellations in the permitting, drilling or completion of oil and gas wells, which could have a material adverse effect on the Company's business, results of operations and financial condition.
The Company's oil and gas exploration and production operations are subject to stringent federal, state and local legal requirements governing, among other things, the drilling of wells (including allocation wells on two or more leaseholds that are not pooled), rates of production, the size and shape of drilling and spacing units or proration units, the transportation and sale of oil, NGLs and gas, the discharging of materials into the environment, environmental protection and occupational safety and health. These requirements may take the form of laws, regulations and executive actions, and noncompliance with these legal requirements may subject the Company to sanctions, including administration, civil or criminal penalties, remedial cleanups or corrective actions, delays in permitting or performance of projects, natural resource damages and other liabilities. Changes in administrative procedures or authorizations, court decisions and legislative action with respect to any of these areas, including authorizations for allocation wells, could have a material adverse effect on the Company's anticipated future production, results of operations and financial condition.
In connection with its operations, the Company must obtain and maintain numerous environmental and oil and gas related permits, approvals and certificates from various federal, state and local governmental authorities, and may incur substantial costs in doing so. The need to obtain permits has the potential to delay, curtail or cease the development of oil and gas projects. The Company may in the future be charged royalties on gas emissions or required to incur certain capital expenditures for air pollution control equipment or other air emissions-related issues. For example, in 2015, the EPA under the Obama Administration issued a final rule under the CAA, making the National Ambient Air Quality Standard ("NAAQS") for

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ground-level ozone more stringent. Since that time, the EPA has issued area designations with respect to ground-level ozone and, on December 31, 2020, published a final action that, upon conducting a periodic review of the ozone standard in accord with CAA requirements, elected to retain the 2015 ozone NAAQS without revision on a going-forward basis. However, in October 2021, the EPA announced it would reconsider its December 2020 decision. Then in August 2023, the EPA announced a new review of the ozone NAAQS which will incorporate the ongoing reconsideration of the December 2020 decision. If the EPA were to adopt more stringent NAAQS for ground-level ozone as part of its new review and ongoing reconsideration of the December 2020 final action, state implementation of the revised NAAQS could, among other things, require installation of new emission controls on some of the Company's equipment, result in longer permitting timelines, and significantly increase the Company's capital expenditures and operating costs.
Additionally, the Company's operations are subject to federal and state laws and regulations, including the federal OSH Act and comparable state statutes, whose purpose is to protect the health and safety of employees. Among other things, the OSHA hazard communication standard, the EPA community right-to-know regulations under Title III of the federal Superfund Amendment and Reauthorization Act and comparable state statutes require that information be maintained concerning hazardous materials used or produced in the Company's operations and that this information be provided to employees, state and local government authorities and citizens.
Compliance with these legal requirements, or any other new environmental or occupational safety and health laws, regulations or executive actions could, among other things, require the Company to install new or modified emission or safety controls on equipment or processes, incur longer permitting timelines and incur increased capital or operating expenditures, which costs may be significant. Additionally, one or more of these developments could impact the Company's oil and gas exploration, production and development activities, which could have a material adverse effect on its business, results of operations and financial condition.
Laws, regulations and other executive actions or regulatory initiatives regarding hydraulic fracturing could increase the Company's cost of doing business and result in additional operating restrictions, delays or cancellations that could have a material adverse effect on the Company's business, results of operations and financial condition.
The Company routinely conducts hydraulic fracturing in its drilling and completion programs. Hydraulic fracturing is typically regulated by state oil and gas commissions, but the practice continues to attract considerable public, scientific and governmental attention in certain parts of the country, resulting in increased scrutiny and regulation, including by federal agencies.
Currently, hydraulic fracturing is generally exempt from regulation under the Underground Injection Control program of the SDWA, but the EPA has asserted federal regulatory authority over certain hydraulic fracturing activities. For example, the EPA has published permitting guidance for certain hydraulic fracturing processes involving the use of diesel fuel and issued a final regulation under the CWA prohibiting discharges to publicly owned treatment works of wastewater from onshore unconventional oil and gas extraction facilities. The EPA is also conducting a study of private wastewater treatment facilities (also known as centralized waste treatment ("CWT") facilities) accepting oil and natural gas extraction wastewater. The EPA is collecting data and information related to the extent to which CWT facilities accept such wastewater, available treatment technologies (and their associated costs), discharge characteristics, financial characteristics of CWT facilities and the environmental impacts of discharges from CWT facilities. In late 2016, the EPA released its final report on the potential impacts of hydraulic fracturing on drinking water resources, concluding that "water cycle" activities associated with hydraulic fracturing may impact drinking water resources under certain circumstances. Other government agencies, including the DOE, the U.S. Geological Survey and the U.S. Government Accountability Office, have evaluated or are evaluating various aspects of hydraulic fracturing. These ongoing or proposed studies could spur initiatives to further regulate hydraulic fracturing and ultimately make it more difficult or costly for the Company to perform fracturing activities. Also, from time to time, legislation has been introduced, but not enacted, in Congress to provide for federal regulation of hydraulic fracturing and to require disclosure of the chemicals used in the hydraulic fracturing process. This or other federal legislation related to hydraulic fracturing may be considered again in the future, though the extent of any such legislation cannot be predicted at this time. Also, in 2016, the BLM under the Obama Administration published a final rule imposing more stringent standards on hydraulic fracturing on federal lands; however, in late 2018, the BLM, under the Trump Administration, published a final rule rescinding the 2016 final rule. Since that time, litigation challenging the BLM's 2016 final rule and the 2018 final rule has resulted in rescission in federal courts of both the 2016 rule and the 2018 final rule. Appeals to those decisions are ongoing, but with little activity in the last several years.
At the state level, many states have adopted legal requirements that have imposed new or more stringent permitting, public disclosure or well construction requirements on hydraulic fracturing activities, including in states where the Company's oil and gas exploration and production activities occur. For example, the Texas Railroad Commission requires operators to disclose chemical ingredients and water volumes used in hydraulic fracturing treatments via the public FracFocus website.

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States could also elect to place prohibitions on hydraulic fracturing and local governments may seek to adopt ordinances within their jurisdictions regulating the time, place or manner of drilling activities in general or hydraulic fracturing activities in particular.
Laws and regulations pertaining to protection of threatened and endangered species or to critical habitat, wetlands and natural resources could delay, restrict or prohibit the Company's operations and cause it to incur substantial costs that may have a material adverse effect on the Company's development and production of reserves.
The federal ESA and comparable state laws were established to protect endangered and threatened species. Under the ESA, if a species is listed as threatened or endangered, restrictions may be imposed on activities adversely affecting that species' habitat. Similar protections are offered to migratory birds under the Migratory Bird Treaty Act and to bald and golden eagles under the Bald and Golden Eagle Protection Act. Some of the Company's operations are conducted in areas where protected species or their habitats are known to exist. In these areas, the Company may be obligated to develop and implement plans to avoid potential adverse effects to protected species and their habitats, and the Company may be delayed, restricted or prohibited from conducting operations in certain locations or during certain seasons, such as breeding and nesting seasons, when the Company's operations could have an adverse effect on the species. In addition, the Fish and Wildlife Service ("FWS") may make new determinations on the listing of species as endangered or threatened under the ESA. The Company takes proactive measures to mitigate the risks of existing or future ESA regulations regarding certain species, like the Dunes Sagebrush Lizard and Lesser Prairie Chicken, that have the potential to impact the Company's operations. For example, the Company is a participant in the Candidate Conservation Agreement with Assurance ("CCAA") for the conservation of the Lesser Prairie Chicken. The terms of this CCAA enable the Company to minimize its impacts to and promote conservation of Lesser Prairie Chicken habitat but also maintain its development plans through the generation of habitat impact offsets. The southern and northern population segments of the Lesser Prairie Chicken were formally listed as endangered and threatened, respectively, by the FWS in November 2022. However, the Company's participation in the Lesser Prairie Chicken CCAA insulates the Company's operations from most of the adverse impacts of this listing. Should the habitat of the Lesser Prairie Chicken be expanded at a future date through the actions of the FWS, operations in areas pertaining to any expanded habitat would not be covered by the CCAA and future operations may require securing FWS permits. Separately, in July 2023 the FWS proposed to list the Dunes Sagebrush Lizard as endangered, but to date has not proposed any protected habitat. Relatedly, the FWS approved a pair of CCAAs covering the Dunes Sagebrush Lizard and its related habitats in non-federal lands in certain counties of western Texas, one pertaining to oil and gas activities and the other to sand mining activities. The Company is a participant in the CCAA for the conservation of the Dunes Sagebrush Lizard related to oil and gas activities as managed by the American Conservation Foundation. The terms of this CCAA enable the Company to minimize its impacts to the Dunes Sagebrush Lizard and to promote conservation of Dunes Sagebrush Lizard habitat through the efforts of the American Conservation Foundation. Participation in the CCAA also provides funding to the American Conservation Foundation to advance scientific understanding and augment efforts to protect the species and preserve and improve Dunes Sagebrush Lizard habitats in certain counties of western Texas while maintaining the Company's development plans. When the FWS designates habitat for the Dunes Sagebrush Lizard, the FWS will work with the American Conservation Foundation to sync conservation and provide legal assurances to CCAA participants. The designation of previously unprotected species or the re-designation of under protected species as threatened or endangered in areas where the Company conducts operations could cause the Company to incur increased costs arising from species protection measures or could result in delays, restrictions or prohibitions on its development and production activities that could have a material adverse effect on the Company's ability to develop and produce reserves.
The Company's transportation of gas; sales and purchases of oil, NGLs and gas or other energy commodities and any derivative activities related to such energy commodities, expose the Company to potential regulatory risks.
The FERC, the Federal Trade Commission and the U.S. Commodities Futures Trading Commission hold statutory authority to monitor certain segments of the physical and futures energy commodities markets relevant to the Company's business. These agencies have imposed broad regulations prohibiting fraud and manipulation of such markets. With regard to the Company's transportation of gas in interstate commerce, physical sales and purchases of oil, NGLs, gas or other energy commodities, and any derivative activities related to these energy commodities, the Company is required to observe the market-related regulations enforced by these agencies, which hold substantial enforcement authority. Failure to comply with such regulations, as interpreted and enforced, could result in agency actions that could materially and adversely affect the Company's results of operations and financial condition.
The Company's bylaws provide, to the fullest extent permitted by law, that the Court of Chancery of the State of Delaware (or if the Court of Chancery does not have jurisdiction, the federal district court for the District of Delaware) will be the exclusive forum for certain legal actions between the Company and its shareholders and that the federal district courts of the United States shall be the sole and exclusive forum for the resolution of causes of action arising under the Securities Act of 1933. These provisions could increase costs to bring a claim, discourage claims or limit the ability of the Company's

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shareholders to bring a claim in a judicial forum viewed by the shareholders as more favorable for disputes with the Company or the Company's directors, officers or other employees.
The Company's bylaws provide to the fullest extent permitted by law that, unless the Company consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware (or if the Court of Chancery does not have jurisdiction, the federal district court for the District of Delaware) will be the sole and exclusive forum for (a) any derivative action or proceeding brought on behalf of the Company, (b) any action asserting a claim of breach of a fiduciary duty owed by any director, officer, other employee, agent or shareholder of the Company to the Company or the Company's shareholders, (c) any action against the Company arising pursuant to any provision of the Delaware General Corporation Law or as to which the Delaware General Corporation Law confers jurisdiction on the Court of Chancery of the State of Delaware, or (d) any action against the Company or any director, officer, other employee or agent of the Company asserting a claim governed by the internal affairs doctrine, including, without limitation, any action to interpret, apply, enforce or determine the validity of the Company's certificate of incorporation or the Company's bylaws. The Company's bylaws also provided that the federal district courts of the United States shall be the sole and exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act of 1933. Although the Company's bylaws provide for an exclusive forum for causes of action under the Securities Act of 1933, its shareholders will not be deemed to have waived compliance with the federal securities laws and the rules and regulations thereunder. The choice of forum provisions may increase costs to bring a claim, discourage claims or limit a shareholder's ability to bring a claim in a judicial forum that it finds favorable for disputes with the Company or the Company's directors, officers or other employees, which may discourage such lawsuits against the Company or the Company's directors, officers and other employees. Alternatively, if a court were to find the choice of forum provision contained in the Company's bylaws to be inapplicable or unenforceable in an action, the Company may incur additional costs associated with resolving such action in other jurisdictions.
Changes in tax laws or the interpretation thereof or the imposition of new or increased taxes or fees may adversely affect the Company's operations and cash flows.
From time to time, U.S. federal and state level legislation has been proposed that would, if enacted into law, make significant changes to U.S. tax laws, including to certain key U.S. federal and state income tax provisions currently available to oil and natural gas exploration and development companies. Such legislative changes have included, but have not been limited to, (i) the elimination of the percentage depletion allowance for oil and natural gas properties, (ii) the elimination of current deductions for intangible drilling and development costs, (iii) an extension of the amortization period for certain geological and geophysical expenditures, (iv) the elimination of certain other tax deductions and relief previously available to oil and natural gas companies and (v) an increase in the U.S. federal income tax rate applicable to corporations such as the Company. It is unclear whether these or similar changes will be enacted and, if enacted, how soon any such changes could take effect. Additionally, states in which the Company operates or owns assets may impose new or increased taxes or fees on oil and natural gas extraction. The passage of any legislation as a result of these proposals and other similar changes in U.S. federal income tax laws or the imposition of new or increased taxes or fees on natural gas and oil extraction could materially and adversely affect the Company's operations and cash flows.
In addition, on August 16, 2022, President Biden signed into law the IRA, which, among other things, imposed a one percent excise tax on corporate share repurchases after December 31, 2022, provided tax incentives to promote clean energy, and introduced a corporate alternative minimum tax (the "CAMT"). Under the CAMT, a 15 percent minimum tax is imposed on certain adjusted financial statement income of "applicable corporations." The CAMT generally treats a corporation as an applicable corporation in any taxable year in which the "average annual adjusted financial statement income" of the corporation and certain of its subsidiaries and affiliates for a three-taxable-year period ending prior to such taxable year exceeds $1 billion.
The U.S. Department of the Treasury and the Internal Revenue Service have issued guidance on the application of the CAMT, which may be relied upon until final regulations are released. If the Company's CAMT liability is greater than its regular U.S. federal income tax liability for any particular tax year, the CAMT liability would effectively accelerate its future U.S. federal income tax obligations, reducing its cash flows in that year, but provide an offsetting credit against its regular U.S. federal income tax liability in future tax years. Based on the Company's interpretation of the IRA, CAMT and related guidance, the Company does not expect the CAMT to materially increase its tax obligations for the 2023 taxable year. However, the CAMT could materially increase the Company's tax obligations in the future, which could adversely impact the Company's financial condition, results of operations and cash flows.

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Risks Associated with the Merger
Completion of the Merger is currently subject to certain conditions and if these conditions are not satisfied or waived, the Merger will not be completed.
The completion of the Merger is currently subject to satisfaction or waiver of certain customary mutual closing conditions, including (i) the expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the "HSR Act") (in ExxonMobil's case, without the imposition of any Burdensome Condition (as defined below)), (ii) the absence of any injunction or other order issued by a court of competent jurisdiction or applicable law or legal prohibition prohibiting or making illegal the consummation of the Merger (or, in ExxonMobil's case, imposing a Burdensome Condition), (iii) the absence of any stop order or proceeding by the SEC for the purpose of suspending the effectiveness of the Registration Statement on Form S-4 filed by ExxonMobil pursuant to which the shares of ExxonMobil common stock are to be issued in connection with the Merger and (iv) approval for listing on the NYSE of the shares of ExxonMobil common stock to be issued in connection with the Merger. "Burdensome Condition" means a material adverse effect on the business, financial condition or results of operations of ExxonMobil, the Company and their respective subsidiaries, taken as a whole (for this purpose ExxonMobil, the Company and their respective subsidiaries, taken as a whole, being deemed a consolidated group of entities of the size and scale of a hypothetical company that is equivalent in size to the Company and its subsidiaries). The obligation of each party to consummate the Merger is also conditioned upon (i) the other party having performed in all material respects its obligations under the Merger Agreement, (ii) the other party's representations and warranties in the Merger Agreement being true and correct (subject to certain materiality qualifiers) and (iii) the other party having not experienced a material adverse effect.
Furthermore, the requirements for obtaining the required clearances and approvals could delay the completion of the Merger for a significant period of time or prevent the Merger from occurring. Any delay in completing the Merger may adversely affect the cost savings and other benefits expected to be achieved if the Merger and the integration of ExxonMobil's and the Company's respective businesses are not completed within the expected time frame.
There can be no assurance that the conditions to the closing of the Merger will be satisfied, waived or fulfilled in a timely fashion or that the Merger will be completed.
Because the Exchange Ratio is fixed and the market price of ExxonMobil common stock has fluctuated and will continue to fluctuate, the Company's shareholders cannot be sure of the value of the consideration they will receive in the Merger, if completed.
If the Merger is completed, each eligible share of the Company's common shares outstanding immediately prior to the Merger will automatically be converted into the right to receive 2.3234 shares of ExxonMobil common stock, with cash to be paid in lieu of fractional shares. Because the Exchange Ratio is fixed, the value of the Merger consideration will depend on the market price of ExxonMobil common stock at the time the Merger is completed. Prior to completion of the Merger, the market price of ExxonMobil common stock is also expected to impact the market price of the Company's common shares. The value of the Company's common shares and ExxonMobil common stock have fluctuated since the date of the announcement of the Merger Agreement and will continue to fluctuate. Accordingly, the Company's shareholders will not know or be able to determine the market value of the Merger consideration they would receive upon completion of the Merger. Share price changes may result from a variety of factors, including, among others, general market and economic conditions, commodity prices, changes in ExxonMobil's and the Company's respective businesses, operations and prospects, market assessments of the likelihood that the Merger will be completed and the timing of the Merger and regulatory considerations. Many of these factors are beyond ExxonMobil's and the Company's control.
The Company's business relationships may be subject to disruption due to uncertainty associated with the Merger.
Parties with which the Company does business may experience uncertainty associated with the Merger, including with respect to current or future business relationships with ExxonMobil, Pioneer or the combined business. The Company's business relationships may be subject to disruption as parties with which ExxonMobil or the Company does business may attempt to negotiate changes in existing business relationships or consider entering into business relationships with parties other than ExxonMobil, Pioneer or the combined business. These disruptions could have an adverse effect on the businesses, financial condition, results of operations or prospects of the combined business, including an adverse effect on ExxonMobil's ability to realize the anticipated benefits of the Merger. The risk, and adverse effect, of such disruptions could be exacerbated by a delay in completion of the Merger or termination of the Merger Agreement.

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The Merger Agreement restricts the Company's ability to pursue alternatives to the Merger.
The Merger Agreement contains provisions that restrict the ability of the Company to sell its business to a party other than ExxonMobil, even if that party were prepared to pay consideration with a higher per-share value than the consideration payable in the Merger pursuant to the Merger Agreement. In addition, the Company will be required to pay a termination fee of approximately $1.8 billion to ExxonMobil if (i) the Merger Agreement is terminated by ExxonMobil because the Company materially breached the terms of the Merger Agreement, (ii) an acquisition proposal or offer for a competing transaction had been publicly announced or communicated to the Board between the signing and termination of the Merger Agreement and (iii) the Company engages in certain competing transactions within 12 months after the termination of the Merger Agreement.
Failure to complete the Merger could negatively impact the share price and the future business and financial results of the Company.
If the Merger is not completed for any reason, the ongoing businesses of the Company may be adversely affected, and without realizing any of the benefits of having completed the Merger, the Company would be subject to a number of risks, including the following:
the Company may experience negative reactions from the financial markets, including negative impacts on its share price;
the Company may experience negative reactions from its customers, vendors, business partners, regulators and employees;
the Company will be required to pay certain costs relating to the Merger, whether or not the Merger is completed;
the Merger Agreement places certain restrictions on the conduct of the Company's businesses prior to completion of the Merger, and such restrictions, the waiver of which is subject to the written consent of ExxonMobil (such consent not to be unreasonably withheld, conditioned or delayed), and subject to certain exceptions and qualifications, may delay or prevent the Company from taking certain other specified actions, responding effectively to competitive pressures or industry developments or otherwise pursuing business opportunities during the pendency of the Merger that the Company would have made, taken or pursued if these restrictions were not in place;
the Company could be subject to litigation related to any failure to complete the Merger or related to any enforcement proceeding commenced against the Company to perform its obligations under the Merger Agreement;
matters relating to the Merger (including integration planning) will require substantial commitments of time and resources by the Company's management, which would otherwise have been devoted to day-to-day operations and other opportunities that may have been beneficial to the Company as an independent company; and
in the event of a termination of the Merger Agreement under certain circumstances specified in the Merger Agreement, the Company may be required to pay a termination fee of approximately $1.8 billion to ExxonMobil.
There can be no assurance that the risks described above will not materialize. If any of those risks materialize, they may materially and adversely affect the Company's businesses, financial condition, financial results, ratings, bond prices and/or share price.
Litigation against the Company could result in substantial costs, an injunction preventing the completion of the Merger and/or a judgment resulting in the payment of damages.
Securities class action lawsuits and derivative lawsuits are often brought against public companies that have entered into merger agreements. Even if such a lawsuit is unsuccessful, defending against these claims can result in substantial costs.
Shareholders of the Company have filed, and may in the future file, lawsuits against ExxonMobil, Pioneer and/or the directors and officers of either company in connection with the Merger. These lawsuits could prevent or delay the completion of the Merger and result in significant costs to the Company, including any costs associated with the indemnification of directors and officers. There can be no assurance that any of the defendants will be successful in the outcome of any existing or potential lawsuits.
The Company will incur significant transaction and Merger-related costs in connection with the Merger.
The Company expects to incur a number of non-recurring costs associated with the Merger and combining the operations of the two companies. The significant, non-recurring costs associated with the Merger include, among others, fees and expenses of financial advisors and other advisors and representatives, certain employment-related costs relating to employees of the Company, filing fees due in connection with filings required under the HSR Act and filing fees and printing and mailing costs for a proxy statement/prospectus. Some of these costs have already been incurred or may be incurred regardless of whether the Merger is completed.

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ITEM 1B.    UNRESOLVED STAFF COMMENTS
None.
ITEM 1C.    CYBERSECURITY
As an oil and gas producer, the Company is dependent on digital technology in many areas of its business and operations. Additionally, the Company gathers and safeguards sensitive information in its regular business activities. The Company continually evaluates and integrates new processes, systems and resources to enhance its defenses against cybersecurity threats. The Company has implemented and maintains the following processes to assess, identify and manage cybersecurity risks:
Risk management policies. The Company has developed and implemented an information security program (the "Cyber Program") and an incident response plan (the "IRP"), which include various processes and controls intended to protect the integrity and availability of the Company's systems and information. These processes and controls were primarily designed and assessed based on the cybersecurity framework published by the National Institute of Standards and Technology. The Company retains or engages various third-parties in connection with design, implementation and monitoring of certain processes and controls. In addition, the Company maintains business continuity and disaster recovery plans.
Key aspects of the Cyber Program include:
risk assessments designed to help identify material cybersecurity risks to critical systems and the company-wide information technology environment;
continuous monitoring of Company systems and the conduct of periodic penetration tests;
the IRP that includes procedures for responding to cybersecurity incidents;
required cybersecurity trainings for employees, incident response personnel, and Company management related to physical security of assets, data privacy and other information security policies and procedures; and
a third-party risk management process for its service providers, suppliers, vendors and other business associates.
The Cyber Program is integrated into the Company's overall enterprise risk management process and shares common methodologies, reporting channels, and governance processes that apply across the enterprise risk management process to other legal, compliance, strategic, operational, and financial risk areas. Cyber risks identified in the overall enterprise risk management process are reviewed annually by the Board.
Governance. The Company's cybersecurity risk management and strategy processes are managed by the Chief Information Security Officer ("CISO") and the Vice President of Technology Solutions, who have 24 and eight years of work experience, respectively, in various roles involving systems security, operations and compliance. These individuals are informed about and monitor the prevention, detection, mitigation and remediation of cybersecurity incidents through their management of internal information technology personnel and retained third-party personnel involved in the cybersecurity risk management and strategy processes described above, including the operation of the IRP. If a cybersecurity incident occurs, it is reviewed by the information technology team to determine whether further escalation to the CISO or Vice President of Technology Solutions is required. Any cybersecurity incident assessment that results in the possibility of a material impact to the Company is reported to the appropriate designated members of management and, when appropriate, outside counsel, to make final materiality determinations, as well as disclosure and other compliance decisions. Additionally, the Company's cyber security governance includes a Cybersecurity Steering Committee which is comprised of a subset of the Company's Executive Committee and other key officers, leaders and subject matter experts from various disciplines across the Company. The Cybersecurity Steering Committee meets quarterly to receive updates from the CISO and/or Vice President of Technology Solutions on Company-related cyber risks, monitor compliance with the Company's Cyber Program and to review cybersecurity policies.
The Board is responsible for overseeing the Company's enterprise risk management processes and has delegated oversight of cybersecurity and other information technology risks to the Audit Committee, a standing committee of the Board. The Audit Committee oversees management's implementation and execution of the Company's Cyber Program and IRP. The Audit Committee receives in-depth annual reports from the CISO or the Vice President of Technology Solutions detailing relevant cybersecurity risks to the Company and, as necessary, timely periodic updates based on circumstances, regarding any significant cybersecurity incidents or developments. The Audit Committee reports to the Board regarding its activities, including those related to cybersecurity.
Risks from Cybersecurity Threats. As of the date of this Annual Report on Form 10-K, the Company has not identified any cybersecurity incidents, including any prior cybersecurity incidents, that have materially affected the Company's operations, business strategy, results of operations and cash flows. The Company faces various ongoing risks from

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cybersecurity threats that, if realized, are reasonably likely to lead to losses of sensitive information, critical infrastructure or capabilities essential to the Company's operations and could have a material adverse effect on the Company's reputation, financial position, results of operations and cash flows. See "Item 1A. Risk Factors - The Company's business could be materially and adversely affected by security threats, including cybersecurity threats, and other disruptions" for additional information.
ITEM 2.    PROPERTIES
Reserve Estimation Procedures and Audits
The information included in this Report about the Company's proved reserves as of December 31, 2023, 2022 and 2021 is based on evaluations prepared by the Company's engineers and audited by Netherland, Sewell & Associates, Inc. ("NSAI").
Reserve estimation procedures. The Company has established internal controls over reserve estimation processes and procedures to support the accurate and timely preparation and disclosure of reserve estimates in accordance with SEC requirements. These controls include oversight of the reserves estimation reporting processes by Pioneer's Corporate Reserves Group ("Corporate Reserves") and an annual external audit of substantial portions of the Company's proved reserves by NSAI.
Corporate Reserves is staffed with reservoir engineers who prepare reserve estimates using reservoir engineering information technology. Corporate Reserves interacts with the technical and production teams to ensure all available engineering and geologic data is taken into account prior to establishing or revising an estimate. There is oversight of the reservoir engineers by the Director of Corporate Reserves, who is in turn subject to direct oversight by the Company's Executive Committee.
All reserve estimates, material assumptions and inputs used in reserve estimates and significant changes in reserve estimates are reviewed for appropriateness and compliance with SEC rules and U.S. GAAP. Annually, the Executive Committee reviews the reserve estimates, and any differences with NSAI for the portion of the reserves that it audits, before these estimates are approved. The engineers who participate in the reserve estimation and disclosure process periodically attend training provided by external consultants and through internal Pioneer programs. Additionally, Corporate Reserves has prepared and maintains written policies and guidelines for its staff to reference on reserve estimation and preparation to promote consistency in the preparation of the Company's reserve estimates and compliance with the SEC reserve estimation and reporting rules.
Proved reserves audits. The proved reserves audited by NSAI, in aggregate, represented the following:
As of December 31,
202320222021
Proved reserves audited by NSAI
97 %95 %93 %
Pre-tax present value of proved reserves discounted at 10 percent audited by NSAI
100 %98 %96 %
In connection with the annual reserves audit, NSAI prepared its own estimates of the Company's proved reserves and compared its estimates to those prepared by the Company. NSAI determined that the Company's estimates of reserves were prepared in accordance with the definitions and regulations of the SEC, including the criteria of "reasonable certainty," as it pertains to expectations about the recoverability of reserves in future years, under existing economic and operating conditions, consistent with the definition in Rule 4-10(a)(24) of Regulation S-X. NSAI issued an unqualified audit opinion on the Company's proved reserves as of December 31, 2023, 2022 and 2021, respectively, based upon their evaluation. NSAI concluded that the Company's estimates of proved reserves were, in the aggregate, reasonable and had been prepared in accordance with Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers. NSAI's audit report as of December 31, 2023, which should be read in its entirety, is attached as Exhibit 99.1 to this Annual Report on Form 10-K.
Qualifications of proved reserves preparers and auditors. Corporate Reserves is staffed by petroleum engineers with extensive industry experience and is managed by the Director of Corporate Reserves, the technical person who is primarily responsible for overseeing the Company's reserves estimates. These individuals meet the professional qualifications of reserves estimators as defined by the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information. The qualifications of the Director of Corporate Reserves includes 44 years of international and domestic experience as a petroleum engineer, with 26 years focused on reserves reporting for independent oil and gas companies, including 13 years at Pioneer. His career also includes 21 years of Permian Basin-focused technical experience in production engineering, advanced reservoir engineering, petrophysics, consulting, and special project research working for and with major oil companies in conjunction

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PIONEER NATURAL RESOURCES COMPANY
with his reserves reporting roles. His educational background includes an undergraduate degree in Geological Engineering, with a Petroleum Engineering emphasis.
NSAI provides worldwide petroleum property analysis services for energy clients, financial organizations and government agencies. NSAI was founded in 1961 and performs consulting petroleum engineering services under Texas Board of Professional Engineers Registration No. F-2699. The technical person primarily responsible for auditing the Company's reserves estimates is a Licensed Professional Engineer in the State of Texas and has been practicing consulting petroleum engineering at NSAI since 1993. He graduated with a Bachelor of Science degree in Chemical Engineering in 1983 and meets or exceeds the education, training and experience requirements set forth in the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information.
Technologies used in proved reserves estimates. Proved undeveloped reserves include those reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for completion. Undeveloped reserves may be classified as proved reserves on undrilled acreage directly offsetting development areas that are reasonably certain of production when drilled, or where reliable technology provides reasonable certainty of economic producibility. Undrilled locations may be classified as having undeveloped proved reserves only if an ability and intent has been established to drill the reserves within five years, unless specific circumstances justify a longer time period.
In the context of reserves estimations, reasonable certainty means a high degree of confidence that the quantities will be recovered and reliable technology means a grouping of one or more technologies (including computational methods) that has been field-tested and has been demonstrated to provide reasonable certainty that the results will be consistent and repeatable in the formation being evaluated or in an analogous formation. In estimating proved reserves, the Company uses several different traditional methods such as performance-based methods, volumetric-based methods and analogy with similar properties. In addition, the Company utilizes additional technical analysis such as seismic interpretation, wireline formation tests, geophysical logs and core data to provide incremental support for more complex reservoirs. Information from this incremental support is combined with the traditional technologies outlined above to enhance the certainty of the Company's proved reserve estimates.
Proved Reserves
The Company's oil and gas proved reserves are as follows:
 Oil
(MBbls)
NGLs
(MBbls)
Gas
(MMcf) (a)
Total (MBOE)%
As of December 31, 2023:
Developed847,550 712,449 4,001,084 2,226,846 90 %
Undeveloped107,072 70,695 397,084 243,948 10 %
954,622 783,144 4,398,168 2,470,794 100 %
As of December 31, 2022:
Developed861,973 660,066 3,574,429 2,117,777 89 %
Undeveloped110,045 78,379 422,562 258,851 11 %
972,018 738,445 3,996,991 2,376,628 100 %
As of December 31, 2021:
Developed847,632 584,492 3,076,329 1,944,845 88 %
Undeveloped119,996 85,488 430,379 277,214 12 %
967,628 669,980 3,506,708 2,222,059 100 %
_____________________
(a)Total proved gas reserves include 204,177 MMcf, 192,814 MMcf and 186,325 MMcf of gas that the Company expected to be produced and used as field fuel (primarily for compressors) as of December 31, 2023, 2022 and 2021, respectively.
The Company's Standardized Measure of total proved reserves are as follows:
 As of December 31,
 202320222021
 (in millions)
Proved developed reserves$24,972 $34,763 $24,992 
Proved undeveloped reserves2,571 3,629 2,692 
$27,543 $38,392 $27,684 

37

PIONEER NATURAL RESOURCES COMPANY
The NYMEX prices used for oil and gas reserve preparation, based upon SEC guidelines, were as follows:
Year Ended December 31,
202320222021
Oil per Bbl$78.24 $93.67 $66.56 
Gas per Mcf$2.64 $6.36 $3.60 
See "Unaudited Supplementary Information" included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Description of Properties
Average daily oil, NGLs, gas and total production is as follows:
Year Ended December 31, 2023
Oil (Bbls)372,127 
NGLs (Bbls)181,864 
Gas (Mcf) (a)964,433 
Total (BOE)714,730 
_____________________
(a)Gas production excludes gas produced and used as field fuel.
Costs incurred are as follows:
Year Ended December 31, 2023
 (in millions)
Proved property acquisition costs$191 
Unproved property acquisition costs138 
Exploration costs3,813 
Development costs703 
Asset retirement obligations37 
$4,882 
Development and exploratory/extension drilling activity is as follows:
Year Ended December 31, 2023
DevelopmentExploratory/Extension
Beginning wells in progress11 292 
Wells spud60 444 
Successful wells(19)(463)
Ending wells in progress52 273 
As of December 31, 2023, the Company holds 960 thousand gross acres (852 thousand net acres), of which 939 thousand gross acres (837 thousand net acres) are located in the Spraberry/Wolfcamp field in the Midland Basin of West Texas. In the southern portion of the Spraberry/Wolfcamp field, the Company has a joint venture ("JV") with Sinochem Petroleum USA LLC, a U.S. subsidiary of the Sinochem Group, that encompasses 235 thousand gross acres.
The oil produced from the Spraberry/Wolfcamp field in the Midland Basin is West Texas Intermediate Sweet, and the gas produced is casinghead gas with an average energy content of 1,400 Btu. The oil and gas are produced primarily from six formations (Spraberry, Jo Mill, Dean, Wolfcamp, Strawn and Atoka), at depths ranging from 7,500 feet to 14,000 feet. The Company believes that it has significant resource potential within its Spraberry, Jo Mill and Wolfcamp acreage, based on the Company's extensive geologic data covering the Middle Spraberry, Jo Mill and Lower Spraberry intervals, the Wolfcamp A, B, C and D intervals and the Company's drilling results.
During 2023, the Company successfully completed 444 horizontal wells in the non-JV portion of the Midland Basin and 38 horizontal wells in the JV portion of the Midland Basin. In the non-JV portion of the Midland Basin, 38 percent of the

38

PIONEER NATURAL RESOURCES COMPANY
horizontal wells placed on production were Spraberry interval wells, 29 percent were Wolfcamp B interval wells, 28 percent were Wolfcamp A interval wells and the remaining five percent were Wolfcamp D interval wells. In the southern JV portion of the Midland Basin, all of the wells placed on production were Wolfcamp A or B interval wells.
The Company continues to complete acreage acquisitions and trades that allow the Company to drill wells with longer laterals, improving the expected returns of the wells. The Company estimates that acreage acquisitions and trades completed in 2023 added 2.4 million and 1.1 million lateral feet to the Company's drilling inventory, respectively.
The Company plans to operate 20 to 22 horizontal drilling rigs and five to six frac fleets in the Midland Basin in 2024. The Company will continue to evaluate its drilling and completions program, with future activity levels assessed regularly based on market conditions.
Selected Oil and Gas Information
Production, price and cost data. The price that the Company receives for the oil and gas it produces is largely a function of market supply and demand. Demand has historically been affected by global economic conditions, including recession concerns, conflicts involving oil producing regions, including the Russia/Ukraine and Israel/Hamas conflicts, and weather and other seasonal conditions, such as hurricanes and tropical storms. Over or under supply of oil or gas can result in substantial price volatility. Historically, commodity prices have been volatile and the Company expects that volatility to continue in the future. A decline in oil, NGL and gas prices or poor drilling results could have a material adverse effect on the Company's financial position, results of operations, cash flows, quantities of oil and gas reserves that may be economically produced and the Company's ability to access the capital markets. See "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" for additional information.
The following table sets forth production, price and cost data with respect to the Company's properties. These amounts represent the Company's historical results of operations without making pro forma adjustments for any acquisitions, divestitures or drilling activity that occurred during the respective years. The production amounts will not match the proved reserve volume tables in "Unaudited Supplementary Information" included in "Item 8. Financial Statements and Supplementary Data" because field fuel volumes are included in the proved reserve volume tables. Due to normal production declines, increased or decreased drilling activities and the effects of acquisitions or divestitures, the historical information presented below should not be interpreted as being indicative of future results.

39

PIONEER NATURAL RESOURCES COMPANY
Year Ended December 31,
 202320222021
Annual sales volumes:
Oil (MBbls)135,826 128,467 130,300 
NGLs (MBbls)66,380 58,507 52,204 
Gas (MMcf)352,018 301,156 256,931 
Total (MBOE)260,876 237,167 225,326 
Average daily sales volumes:
Oil (Bbls)372,127 351,964 356,986 
NGLs (Bbls)181,864 160,294 143,026 
Gas (Mcf)964,433 825,085 703,919 
Total (BOE)714,730 649,773 617,332 
Average prices:
Oil (per Bbl)$77.03 $95.66 $67.60 
NGLs (per Bbl)$24.35 $37.67 $32.70 
Gas (per Mcf)$2.59 $6.03 $3.85 
Revenue (per BOE)$49.79 $68.77 $51.05 
Average costs (per BOE):
Production costs:
Lease operating$4.26 $3.89 $2.97 
Gathering, processing and transportation3.15 4.21 3.14 
Workover1.05 1.03 0.45 
Net natural gas plant(0.65)(1.04)(0.93)
$7.81 $8.09 $5.63 
Production and ad valorem taxes:
Production taxes$2.27 $3.27 $2.41 
Ad valorem taxes0.75 0.81 0.48 
$3.02 $4.08 $2.89 
Depletion expense$10.79 $10.48 $10.81 
Productive wells. Productive wells consist of producing wells and wells capable of production, including oil wells awaiting connection to production facilities, gas wells awaiting pipeline connections to commence deliveries and shut-in wells. One or more completions in the same well bore are counted as one well. Any well in which one of the multiple completions is an oil completion is classified as an oil well.
Productive oil and gas wells attributable to the Company's properties are as follows:
As of December 31, 2023
Gross Productive WellsNet Productive Wells
OilGasTotalOilGasTotal
10,0462210,0687,908177,925
Developed, undeveloped and royalty leasehold acreage is as follows:
As of December 31, 2023
Developed AcreageUndeveloped AcreageRoyalty Acreage
Gross AcresNet AcresGross AcresNet Acres
897,821792,82961,70659,326152,283

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PIONEER NATURAL RESOURCES COMPANY
The expiration dates of the leases attributable to gross and net undeveloped acres are as follows:
As of December 31, 2023
 Acres Expiring
 GrossNet
2024 (a)46,395 45,643 
20256,863 6,144 
20267,168 6,437 
2027640 588 
2028160 210 
Thereafter480 304 
61,706 59,326 
 _____________________
(a)The Company has an active drilling program and ongoing efforts to extend leases that may not be drilled prior to expiration. The Company currently has no proved undeveloped reserve locations scheduled to be drilled after lease expiration. Approximately 37 thousand net acres expiring are subject to continuous drilling obligations, which the Company expects to meet with its active drilling program.
Drilling activities. The following table sets forth the number of gross and net wells drilled by the Company that were productive or dry holes. This information should not be considered indicative of future performance, nor should it be assumed that there was any correlation between the number of productive wells drilled and the oil and gas reserves generated thereby or the costs to the Company of productive wells compared to the costs of dry holes.
 Gross WellsNet Wells
 
Year Ended December 31,
Year Ended December 31,
 202320222021202320222021
Productive wells:
Development19 49 54 19 45 52 
Exploratory/extension463 442 488 419 389 440 
482 491 542 438 434 492 
Success ratio (a)100 %100 %100 %100 %100 %100 %
______________________
(a)Represents the ratio of those wells that were successfully completed as producing wells or wells capable of producing to total wells drilled and evaluated.
Wells in process of being drilled are as follows:
As of December 31, 2023
Gross WellsNet Wells
Development52 45 
Exploratory/extension273 241 
325 286 
ITEM 3.    LEGAL PROCEEDINGS
The Company is party to various proceedings and claims incidental to its business and in connection with the Merger. While many of these matters involve inherent uncertainty, the Company believes that the amount of the liability, if any, ultimately incurred with respect to these proceedings and claims will not have a material adverse effect on the Company's consolidated financial position as a whole or on its liquidity, capital resources or future annual results of operations. See Note 10 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information. See "Item 1A. Risk Factors - Litigation against the Company could result in substantial costs, an injunction preventing the completion of the Merger and/or a judgment resulting in the payment of damages" for a discussion of potential risks that may arise from legal proceedings in connection with the Merger.
On May 18, 2023, the Company received a Notice of Violation and Opportunity to Confer from the Environmental Protection Agency ("EPA") alleging violations of the Clean Air Act at certain of its operated locations. The Company is engaged in discussions with the EPA regarding a resolution of the alleged violations. The Company does not believe that the

41

PIONEER NATURAL RESOURCES COMPANY
resolution of this matter will have a material adverse impact on the Company's consolidated financial position as a whole or on its liquidity, capital resources or future results of operations, but the resolution of the matter may result in penalties that exceed $300,000.
ITEM 4.    MINE SAFETY DISCLOSURES
Not applicable.
INFORMATION ABOUT OUR EXECUTIVE OFFICERS
The following table sets forth certain information as of the date of this Report regarding the Company's executive officers. All of the Company's executive officers serve at the discretion of the Board. There are no family relationships among any of the Company's directors or executive officers.
NamePositionAge
Richard P. Dealy
President and Chief Executive Officer
57
Mark S. BergExecutive Vice President, Corporate Operations65
J.D. HallExecutive Vice President, Operations58
Mark H. KleinmanExecutive Vice President and General Counsel62
Elizabeth A. McDonald
Executive Vice President, Strategic Planning, Field Development and Marketing
45
Neal H. Shah
Executive Vice President and Chief Financial Officer
53
Tyson L. Taylor
Executive Vice President, Human Resources and Communications
45
Bonnie S. Black
Executive Vice President, Technology and Operations Support
52
Christopher L. WashburnVice President and Chief Accounting Officer40
Richard P. Dealy
Mr. Dealy was elected as the Company's President and Chief Executive Officer effective January 1, 2024 and was appointed to the Company's Board at the Company's annual meeting of shareholders held in May 2023. Prior to that, Mr. Dealy had served as the Company's President and Chief Operating Officer since January 2021. Mr. Dealy held positions for the Company as Executive Vice President and Chief Financial Officer from November 2004 through December 2020, Vice President and Chief Accounting Officer from February 1998 to November 2004 and Vice President and Controller from August 1997 to January 1998. Mr. Dealy joined Parker & Parsley Petroleum Company, a predecessor of the Company (together with its predecessor companies, "Parker & Parsley") in July 1992 and was promoted to Vice President and Controller in 1996, in which position he served until August 1997. Before joining Parker & Parsley, Mr. Dealy was employed by KPMG LLP. Mr. Dealy is also a director of Compass Minerals International, Inc. and the American Exploration & Production Council. Mr. Dealy graduated with honors from Eastern New Mexico University with a Bachelor of Business Administration degree in Accounting and Finance and is a Certified Public Accountant.
Mark S. Berg
Mr. Berg was elected as Executive Vice President, Corporate Operations, in June 2014. Mr. Berg previously held the position of Executive Vice President and General Counsel from April 2005 until January 2014. Prior to joining the Company, Mr. Berg served as Executive Vice President, General Counsel and Secretary of American General Corporation, a Fortune 200 diversified financial services company, from 1997 through 2002. Subsequent to the sale of American General to American International Group, Inc., Mr. Berg joined Hanover Compressor Company as Senior Vice President, General Counsel and Secretary. He served in that capacity from May 2002 through April 2004. Mr. Berg began his career in 1983 with the Houston-based law firm of Vinson & Elkins L.L.P. He was a partner with the firm from 1990 through 1997. Mr. Berg is also a director of ProPetro Holding Corp. ("ProPetro") and a director and Vice Chairman of Permian Strategic Partnership Inc. Mr. Berg graduated Magna Cum Laude and Phi Beta Kappa with a Bachelor of Arts degree from Tulane University in 1980. He earned his Juris Doctorate with honors from the University of Texas School of Law in 1983.
J. D. Hall
Mr. Hall was elected as the Company's Executive Vice President, Operations, in April 2019. Mr. Hall had previously held positions for the Company as Executive Vice President, Permian Operations, from August 2015 to April 2019, Executive Vice President, Southern Wolfcamp Operations from August 2014 to August 2015, Senior Vice President, South Texas Operations from June 2013 to August 2014, Vice President, South Texas Operations from February 2013 to June 2013, Vice President, South Texas Asset Team from September 2012 to February 2013 and Vice President, Eagle Ford Asset Team from

42

PIONEER NATURAL RESOURCES COMPANY
January 2010 to September 2012. Prior to his positions in South Texas, he was the Operations Manager in Alaska from January 2005 to January 2010. He previously held several other positions with the Company, including managing offshore, onshore and international projects. He began his career with a predecessor company, MESA, Inc., in 1989. He has a Bachelor of Science degree in Mechanical Engineering from Texas Tech University and is a registered professional engineer in Texas.
Mark H. Kleinman
Mr. Kleinman was elected as the Company's Executive Vice President and General Counsel in April 2019. He also held the positions of Senior Vice President and General Counsel from January 2014 through April 2019, Vice President from May 2006 until January 2014, Corporate Secretary from June 2005 through August 2015, and Chief Compliance Officer from June 2005 until May 2013. Mr. Kleinman earned a Bachelor of Arts degree in Government from the University of Texas and graduated, with honors, from the University of Texas School of Law.
Elizabeth A. McDonald
Ms. McDonald was elected as the Company's Executive Vice President, Strategic Planning, Field Development and Marketing, effective June 2023. Ms. McDonald had previously held positions for the Company as Senior Vice President, Strategic Planning, Field Development and Marketing from January 2021 to June 2023, Vice President, Permian Strategic Planning and Field Development, from May 2019 to January 2021, Vice President, Permian Infrastructure Development and Operations, from April 2018 to May 2019, Vice President, South Texas Asset Team, from March 2017 to April 2018, and Vice President, South Texas Subsurface, from August 2014 to March 2017. She joined the Company in 2005 as a reservoir engineer on the Engineering and Development team focused on the Gulf of Mexico and North Africa exploration projects, and has held a number of positions, including as Senior Reservoir Engineering Manager – South Texas Asset Team, Manager of Planning – Corporate Finance, Business Analyst – Worldwide Operations, Senior Reservoir Engineer – Central Gulf Coast Exploration and Reservoir Engineer – Engineering and Development. Ms. McDonald earned a Bachelor of Science, Petroleum Engineering degree in 2001 from Texas A&M University and is a registered professional engineer in Texas.
Neal H. Shah
Mr. Shah was elected as the Company's Executive Vice President and Chief Financial Officer, effective June 2023. Mr. Shah had previously held the position of Senior Vice President and Chief Financial Officer from January 2021 to June 2023. Mr. Shah joined the Company in June 2017 as Vice President, Investor Relations. Before joining the Company, Mr. Shah served as Senior Equity Research Analyst at Thrivent Asset Management from June 2016 to June 2017, and as Vice President at Nuveen LLC from March 2006 to June 2016. He has a financial and equity research background and has held various financial analysis positions at Piper Jaffray & Company, RBC Capital Markets and Goldman Sachs & Company. Mr. Shah earned a Bachelor of Science degree in Electrical Engineering from Louisiana State University and a Master of Business Administration degree from the Booth School of Business at the University of Chicago, where he was a Siebel Scholar and a recipient of the Irwin J. Biederman Leadership award.
Tyson L. Taylor
Ms. Taylor was elected as the Company's Executive Vice President, Human Resources and Communications, effective October 2023. Prior to her current role, Ms. Taylor served as Senior Vice President, Human Resources, from November 2021 to October 2023 and Vice President, Human Resources, from April 2019 to November 2021. Ms. Taylor has 20 years of Human Resources experience, including 11 years with the Company, during which she has worked in all areas of the Company's Human Resources department. Ms. Taylor previously held the positions of Vice President, Learning and Development, and Director, Organizational Development and Recruiting. Ms. Taylor earned a Bachelor of Business Administration from the University of North Texas and a Master of Business Administration from Southern Methodist University.
Bonnie S. Black
Ms. Black was elected as the Company's Executive Vice President, Technologies and Operations Support, in October 2023. Prior to her current role, Ms. Black served as Senior Vice President, Technologies and Operations Support, from December 2022 to October 2023, Vice President of Drilling from May 2019 to December 2022, Vice President, Permian Well Planning & Permitting, from September 2015 to May 2019 and Vice President of Environmental and Sustainable Development from September 2013 to August 2015. Ms. Black joined the company in 2007 as a Health, Safety and Environmental manager after more than 25 years' experience in the oil and gas industry working in client-facing environmental consulting roles in Texas, Oklahoma and Alaska. Ms. Black holds a Bachelor of Science in Civil Engineering from Texas A&M University and is a registered professional engineer with a specialization in Environmental Engineering. At her alma mater, she is the Chair of the Civil & Environmental Advisory Council and an Executive Committee Member of the Aggie Women Engineering Network.

43

PIONEER NATURAL RESOURCES COMPANY
Ms. Black also serves as a director of Innovex Downhole Solutions, Inc. and an Advisory Board Member of the Undergraduate Practice Opportunities Program at Massachusetts Institute of Technology.
Christopher L. Washburn
Mr. Washburn was elected as the Company's Vice President and Chief Accounting Officer in October 2022. Mr. Washburn served as the Company's interim Chief Accounting Officer beginning in July 2022. He also held the position of the Company's Controller from March 2018 to July 2022. Prior to this role, Mr. Washburn served in various accounting positions since joining the Company in 2006. Mr. Washburn earned a Bachelor of Business Administration degree and a Master of Professional Accounting degree from West Texas A&M University and is a Certified Public Accountant.
Officers are generally elected by the Board at its meeting on the day of each annual election of directors, with each such officer serving until a successor has been elected and qualified.


44

PIONEER NATURAL RESOURCES COMPANY
PART II
ITEM 5.    MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS
AND ISSUER PURCHASES OF EQUITY SECURITIES
The Company's common shares are listed and traded on the NYSE under the symbol "PXD." The Board has authority to declare dividends to the holders of the Company's common shares. The Company can provide no assurance that dividends will be authorized or declared in the future or as to the amount of any future dividends. The Merger Agreement provides certain restrictions on future base and variable dividend declarations, including an agreement that the Company will no longer pay a variable dividend after distributing 50 percent of the normal variable dividend attributable to fourth quarter 2023 results. With limited exceptions, the Merger Agreement also precludes the Company from future repurchases of the Company's common shares, including repurchases under the Company's share repurchase program.
As of February 20, 2024, the Company's common shares were held by 7,777 holders of record.
Purchases of Equity Securities by the Issuer and Affiliated Purchasers
Purchases of the Company's common shares are as follows:
Three Months Ended December 31, 2023
PeriodTotal Number of
Shares Purchased (a)
Average Price Paid per ShareTotal Number of 
Shares Purchased as
Part of Publicly
Announced Plans
or Programs
Approximate Dollar
Amount of Shares
that May Yet Be
Purchased under
Plans or Programs (b)
October 1-31, 2023
— $— — $3,875,575,094 
November 1-30, 2023
2,368 $233.56 — $3,875,575,094 
December 1-31, 2023
198,207 $228.45 — $3,875,575,094 
200,575 — 
__________________
(a)Includes shares withheld from employees in order for employees to satisfy income tax withholding payments related to share-based awards that vested during the period.
(b)In April 2023, the Board authorized a $4 billion common share repurchase program to replace the prior $4 billion common share repurchase program authorized in February 2022. The share repurchase program has no time limit and may be modified, suspended or terminated at any time by the Board. With limited exceptions, the Merger Agreement precludes the Company from future repurchases of the Company's common shares, including repurchases under the Company's share repurchase program.

45

PIONEER NATURAL RESOURCES COMPANY
Performance Graph
The following performance graph and related information shall not be deemed "soliciting material" or to be "filed" with the SEC, nor shall the information be incorporated by reference into any future filing under the Securities Act of 1933 or Securities Exchange Act of 1934, each as amended, except to the extent that the Company specifically incorporates it by reference into such filing.
The graph below compares the cumulative total shareholder return on the Company's common shares during the five-year period ended December 31, 2023, with cumulative total returns during the same period for the Standard & Poor's ("S&P") 500 Index and the S&P Oil and Gas Exploration & Production Index.


COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURN*
Among Pioneer Natural Resources Company, the S&P 500 Index
and the S&P Oil & Gas Exploration & Production Index
863
*$100 invested on 12/31/18 in stock or index, including reinvestment of dividends. Fiscal year ending December 31. Copyright© 2024 Standard & Poor's, a division of S&P Global. All rights reserved.

As of December 31,
2018
20192020202120222023
Pioneer Natural Resources Company
$100.00 $116.07 $89.56 $148.87 $206.73 $217.06 
S&P 500
$100.00 $131.49 $155.68 $200.37 $164.08 $207.21 
S&P Oil & Gas Exploration & Production
$100.00 $90.85 $57.62 $96.56 $140.71 $146.11 
The share price performance included in this graph is not necessarily indicative of future share price performance.
ITEM 6.    RESERVED


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PIONEER NATURAL RESOURCES COMPANY
ITEM 7.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS
Planned Merger of the Company with ExxonMobil
On October 10, 2023, the Company entered into a Merger Agreement with ExxonMobil, pursuant to which, and subject to the terms and conditions thereof, the Company will merge with a subsidiary of and become a wholly-owned subsidiary of ExxonMobil. Under the terms of the Merger Agreement, each eligible share of the Company's common shares will be converted into the right to receive 2.3234 shares of ExxonMobil common stock. On February 7, 2024, the Company's shareholders adopted the Merger Agreement at a special meeting of shareholders. Completion of the Merger remains subject to certain conditions, including certain governmental and regulatory approvals. The Merger is currently expected to close in the second quarter of 2024; however, no assurance can be given as to when, or if, the Merger will occur.
The Merger Agreement imposes restrictions on the Company's business and operations during the pendency of the Merger. While the Company does not believe those restrictions are unduly burdensome, they may delay or prevent the Company from taking actions it could otherwise take. Accordingly, the Company's results of operations from before the Merger Agreement may not be comparable to results of operations since the Company entered into the Merger Agreement.
See Note 1 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Oil and Gas Industry Considerations
Supply and demand for oil throughout the world remains volatile. Over the past few years, global oil inventories have consistently been lower than historical levels due to reduced capital investments being directed towards developing incremental oil supplies. Sanctions, import bans and price caps on Russian oil and petroleum products were implemented by various countries in response to the war in Ukraine, further impacting global oil supply. Most recently, renewed conflict in the Middle East has stoked fears of oil supply instability. From an economic perspective, the recent raising of interest rates to contend with significant inflation has resulted in a slowing global economy and the potential for a global recession, with Japan and the United Kingdom already reporting recessions. Further, recent data from China, such as weakened consumer spending and higher youth unemployment, point to a fragile economy. China remains the world's second largest economy and represents a key component of oil demand. These uncertainties led OPEC to reduce its oil demand outlook, which resulted in multiple cuts to its production quotas. As a result of the current global supply and demand uncertainties, average NYMEX oil and NYMEX gas prices for the year ended December 31, 2023 were $77.63 per Bbl and $2.74 per Mcf, respectively, as compared to $94.23 per Bbl and $6.55 per Mcf, respectively, for the same period in 2022.
Global oil price levels and general inflationary pressures will ultimately depend on various factors that are beyond the Company's control, such as (i) the ability of OPEC and other oil producing nations to manage the global oil supply, (ii) the impact of sanctions and import bans on production from Russia, (iii) the impact on oil supplies from the Middle East should the Middle Eastern conflicts continue to expand, (iv) global oil demand growth, including demand growth from China and India, (v) oilfield services demand, (vi) political stability of oil consuming countries and (vii) the overall health of the global economy. The Company continues to assess and monitor the impact of these factors and consequences on the Company and its operations.
Financial and Operating Performance
The Company's financial and operating performance for the year ended December 31, 2023 included the following highlights:
Net income attributable to common shareholders for the year ended December 31, 2023 was $4.9 billion ($20.21 per diluted share), as compared to net income of $7.8 billion ($31.13 per diluted share) for the same period in 2022. The primary components of the decrease in earnings attributable to common shareholders include:
a $3.3 billion decrease in oil and gas revenues, primarily due to a 28 percent decrease in average realized commodity prices per BOE in 2023 due to the aforementioned volatility in worldwide oil, NGL and gas demand, partially offset by a 10 percent increase in daily sales volumes due to the Company's successful Spraberry/Wolfcamp horizontal drilling program;
partially offset by:
a $753 million decrease in income taxes, primarily due to the decrease in earnings in 2023 compared to 2022.
During the year ended December 31, 2023, average daily sales volumes increased on a BOE basis by 10 percent to 714,730 BOEPD, as compared to 649,773 BOEPD during the same period in 2022.

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PIONEER NATURAL RESOURCES COMPANY
Average oil and NGL prices per Bbl and average gas prices per Mcf decreased to $77.03, $24.35 and $2.59, respectively, during the year ended December 31, 2023, as compared to $95.66, $37.67 and $6.03, respectively, during the same period in 2022.
Net cash provided by operating activities decreased during the year ended December 31, 2023 to $8.4 billion, as compared to $11.3 billion for the same period in 2022. The decrease in net cash provided by operating activities during the year ended December 31, 2023, as compared to the same period in 2022, is primarily due to the aforementioned decrease in oil and gas revenues.
During the year ended December 31, 2023, the Company declared base and variable dividends of $4.85 per share and $9.11 per share, respectively, resulting in total dividends of $3.3 billion, as compared to base and variable dividends of $3.76 per share and $21.68 per share, respectively, and total dividends of $6.1 billion during the same period in 2022.
During the year ended December 31, 2023, the Company repurchased 3.0 million shares for $624 million under the Company's share repurchase programs, as compared to repurchases of 7.2 million shares for $1.6 billion during the same period in 2022.
As of December 31, 2023 and December 31, 2022, the Company's net debt to book capitalization was 17 percent and 15 percent, respectively.
Results of Operations
Results of operations should be read together with the Company's consolidated financial statements and related notes included in "Item 8. Financial Statements and Supplementary Data" of this Annual Report on Form 10-K. See "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in the Company's Annual Report on Form 10-K for the year ended December 31, 2022 for a discussion of the Company's 2022 results of operations as compared to the Company's 2021 results of operations.
Oil and gas revenues. The Company's oil and gas revenues are derived from sales of oil, NGL and gas production. Increases or decreases in the Company's revenues, profitability and future production are highly dependent on commodity prices. Prices are market driven and future prices will fluctuate due to supply and demand factors, availability of transportation, seasonality, geopolitical developments and economic factors, among other items.
 
Year Ended December 31,
 20232022Change
(in millions, except volumes)
Oil and gas revenues
$12,989 $16,310 $(3,321)
Average daily sales volumes:
Oil (Bbls)372,127 351,964 %
NGLs (Bbls)181,864 160,294 13 %
Gas (Mcf) (a)
964,433 825,085 17 %
Total (BOE)714,730 649,773 10 %
Liquids percentage of total production78 %79 %(1)%
____________________
(a)Gas production excludes gas produced and used as field fuel.
Average daily BOE sales volumes increased for the year ended December 31, 2023, as compared to the same period in 2022, primarily due to the Company's successful Spraberry/Wolfcamp horizontal drilling program.
The oil, NGL and gas prices reported by the Company are based on the market prices received for each commodity. Commodity prices for the year ended December 31, 2023, as compared to the same period in 2022, decreased due to the aforementioned volatility in worldwide oil, NGL and gas demand. The average prices are as follows:
 
Year Ended December 31,
 20232022Change
Oil price per Bbl$77.03 $95.66 (19 %)
NGL price per Bbl$24.35 $37.67 (35 %)
Gas price per Mcf$2.59 $6.03 (57 %)
Price per BOE$49.79 $68.77 (28 %)

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PIONEER NATURAL RESOURCES COMPANY
Net effect from sales of purchased commodities. The Company enters into pipeline capacity commitments in order to secure available oil, NGL and gas transportation capacity from the Company's areas of production and to secure diesel supply from the Gulf Coast. The Company also enters into purchase commitments to secure sand supply for the Company's operations in the Midland Basin. The Company enters into purchase transactions with third parties and separate sale transactions with third parties to diversify a portion of the Company's oil and gas sales to (i) Gulf Coast refineries, (ii) Gulf Coast and West Coast gas markets and (iii) international oil markets, and to satisfy unused gas pipeline capacity commitments. The Company periodically sells diesel and sand to unaffiliated third parties in the Permian Basin if it has supply in excess of its operational needs. Revenues and expenses from these transactions are generally presented on a gross basis in sales of purchased commodities and purchased commodities expense in the accompanying consolidated statements of operations as the Company acts as a principal in the transaction by assuming both the risks and rewards of ownership, including credit risk, of the commodities purchased and the responsibility to deliver the commodities sold. In conjunction with the Company's downstream sales, the Company also enters into pipeline capacity and storage commitments in order to secure available oil and gas transportation capacity from the Company's areas of production to downstream sales points and storage capacity at downstream sales points. The transportation and storage costs associated with these transactions are included in purchased commodities expense.
The net effect from sales of purchased commodities is as follows:
Year Ended December 31,
20232022Change
(in millions)
Sales of purchased commodities$6,385 $8,074 $(1,689)
Purchased commodities expense6,585 8,235 (1,650)
$(200)$(161)$(39)
The change in net sales of purchased commodities for the year ended December 31, 2023, as compared to the same period in 2022, is primarily due to a decrease in margins on the Company's downstream Gulf Coast refinery and export sales.
Firm transportation payments on excess pipeline capacity are included in other expense in the accompanying consolidated statements of operations. See Note 14 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Interest and other income, net.
Year Ended December 31,
20232022Change
(in millions)
Interest and other income, net$39 $119 $(80)
The change in net interest and other income for the year ended December 31, 2023, as compared to the same period in 2022, is primarily due to changes in the fair value of the Company's investment in affiliate resulting in a noncash loss of $33 million in 2023, as compared to a noncash gain of $37 million in 2022.
See Note 4 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information on changes in fair value related to the Company's investment in affiliate.

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PIONEER NATURAL RESOURCES COMPANY
Derivative loss, net.
Year Ended December 31,
20232022Change
(in millions)
Marketing derivatives:
Noncash derivative gain (loss), net$11 $(63)$74 
Cash payments on settled derivatives(74)(66)(8)
Total marketing derivative loss, net(63)(129)66 
Conversion option derivatives:
Noncash derivative gain, net— 
Cash receipts (payments) on settled derivatives, net(13)13 (26)
Total conversion option derivative gain (loss), net(12)14 (26)
Commodity derivatives:
Noncash derivative gain, net— 158 (158)
Cash payments on settled derivatives, net— (358)358 
Total commodity derivative loss, net— (200)200 
Derivative loss, net$(75)$(315)$240 
Marketing derivatives. The Company uses marketing derivatives to diversify its oil pricing to Gulf Coast and international markets. As of December 31, 2023, the Company's marketing derivatives reflect long-term marketing contracts whereby the Company agreed to purchase and simultaneously sell, at an oil terminal in Midland, Texas, (i) 50 thousand barrels of oil per day beginning January 1, 2021 and ending December 31, 2026, (ii) 40 thousand barrels of oil per day beginning May 1, 2022 and ending April 30, 2027 and (iii) 30 thousand barrels of oil per day beginning August 1, 2022 and ending July 31, 2027.
The price the Company pays to purchase the oil volumes under the purchase contract is based on a Midland WTI price and the price the Company receives for the oil volumes sold is the WASP that a non-affiliated counterparty receives for selling oil through a Gulf Coast storage and export facility at prices that are highly correlated with Brent oil prices during the same month of the purchase. Based on the form of the long-term marketing contracts, the Company accounts for the contracts as derivative instruments not designated as hedges.
Conversion option derivatives. In May 2020, the Company issued $1.3 billion principal amount of convertible senior notes due 2025 (the "Convertible Notes"). Certain holders of the Convertible Notes have exercised their conversion options per the terms of the notes' indenture. The Company elected to settle the conversions in cash, with settlement occurring 25 trading days from the notice of conversion (the "Settlement Period"). The Company's election to settle an exercised conversion option in cash results in a forward contract during the Settlement Period that is accounted for as a derivative instrument not designated as a hedge. The Company's conversion option derivatives represent the change in the cash settlement obligation that occurs during the Settlement Period.
The Company's open derivative contracts are subject to market risk. See "Item 7A. Quantitative and Qualitative Disclosures About Market Risk" and Note 4 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Gain on disposition of assets, net.
Year Ended December 31,
20232022Change
(in millions)
Gain on disposition of assets, net$24 $106 $(82)
Net gain on disposition of assets for the year ended December 31, 2023 primarily represents nonmonetary transactions in which the Company exchanged both proved and unproved oil and gas properties in the Midland Basin with unaffiliated third parties resulting in the Company recording a gain of $20 million.
Net gain on disposition of assets for the year ended December 31, 2022 primarily represents the divestment of certain undeveloped acreage and producing wells in the Midland Basin resulting in a gain on the divestitures of $110 million.

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PIONEER NATURAL RESOURCES COMPANY
See Note 3 of Notes to Consolidated Financial Statements included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Oil and gas production costs.
 
Year Ended December 31,
 20232022Change
(in millions, except per BOE)
Oil and gas production costs
$2,042 $1,922 $120 
Production costs per BOE:
Lease operating expense (a)$4.26 $3.89 10 %
Gathering, processing and transportation expense (b)3.15 4.21 (25 %)
Workover costs (a)1.05 1.03 %
Net natural gas plant income (c)(0.65)(1.04)(38 %)
$7.81 $8.09 (3 %)
____________________
(a)Lease operating expense and workover costs represent the components of oil and gas production costs over which the Company has management control.
(b)Gathering, processing and transportation expense represents the costs to (i) gather, process, transport and fractionate the Company's gas and NGLs to a point of sale and, to a lesser extent, (ii) gather and transport certain of the Company's oil production to a point of sale.
(c)Net natural gas plant income represents the earnings from the Company's ownership share of gas processing facilities that gather and process the Company's and third party gas.
The change in the Company's production costs per BOE during the year ended December 31, 2023, as compared to the same period in 2022, is due to the following:
Lease operating expense per BOE increased primarily due to inflationary pressures on labor, maintenance, chemical and rental equipment costs;
Gathering, processing and transportation expense per BOE decreased primarily due to a reduction in gas processing costs as a result of a decline in gas and NGL prices, which are used to value contractual volumes retained by the gas processor as payment for their services;
Workover costs per BOE for the year ended December 31, 2023 increased primarily due to inflationary pressures on oilfield services; and
Net natural gas plant income per BOE decreased primarily due to decreases in gas and NGL prices.
Production and ad valorem taxes.
 
Year Ended December 31,
 20232022Change
(in millions, except per BOE)
Production and ad valorem taxes$785 $965 $(180)
Production and ad valorem taxes per BOE:
Production taxes per BOE$2.27 $3.27 (31 %)
Ad valorem taxes per BOE0.75 0.81 (7 %)
$3.02 $4.08 (26 %)
In general, production taxes and ad valorem taxes are directly related to commodity price changes; however, Texas ad valorem taxes are based upon prior year commodity prices, whereas production taxes are based upon current year commodity prices.
The change in production taxes per BOE for the year ended December 31, 2023, as compared to the same period in 2022, is due to the aforementioned decrease in commodity prices. Ad valorem taxes were the same year over year, however, on a per BOE basis, the decrease for the year ended December 31, 2023, as compared to the same period in 2022, is due to an increase in daily sales volumes due to the Company's successful Spraberry/Wolfcamp horizontal drilling program.

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PIONEER NATURAL RESOURCES COMPANY
Depletion, depreciation and amortization expense.
 
Year Ended December 31,
 20232022Change
(in millions, except per BOE)
Depletion, depreciation and amortization$2,862 $2,530 $332 
Total DD&A expense per BOE:
DD&A per BOE
$10.97 $10.67 %
Depletion expense per BOE$10.79 $10.48 %
The change in DD&A and depletion expense per BOE for the year ended December 31, 2023, as compared to the same period in 2022, is primarily a result of inflationary pressures increasing well costs and lower commodity prices reducing the economic life of certain producing wells, which resulted in a reduction to total proved reserves due to pricing revisions. See "Unaudited Supplementary Information" included in "Item 8. Financial Statements and Supplementary Data" for additional information.
Exploration and abandonments expense.
 
Year Ended December 31,
 20232022Change
(in millions)