MiNK Therapeutics, Inc. [INKT] Filings

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

For the quarterly period ended March 31, 2024

OR

For the transition period from _______________ to _______________

Commission File Number: 001-40908

MiNK Therapeutics, Inc.

(Exact Name of Registrant as Specified in its Charter)

Registrant’s telephone number, including area code: 212-994-8250

Securities registered pursuant to Section 12(b) of the Act:

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 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.

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 is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of May 10, 2024, the registrant had 34,727,639 shares of common stock, $0.00001 par value per share, outstanding.

Table of Contents

PART I—FINANCIAL INFORMATION

Item 1. Financial Statements.

MINK THERAPEUTICS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

See accompanying notes to unaudited condensed consolidated financial statements.

MINK THERAPEUTICS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(Unaudited)

See accompanying notes to unaudited condensed consolidated financial statements.

MINK THERAPEUTICS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT

(Unaudited)

MINK THERAPEUTICS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT

(Unaudited)

See accompanying notes to unaudited condensed consolidated financial statements.

MINK THERAPEUTICS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

See accompanying notes to unaudited condensed consolidated financial statements.

MINK THERAPEUTICS, INC. AND SUBSIDIARIES

NOTES TO UNAUDITED INTERIM CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Overview

MiNK Therapeutics, Inc. (“we,” “us” and “our”) is a clinical stage biopharmaceutical company pioneering the discovery, development and manufacturing of allogeneic, off-the-shelf invariant natural killer T (“iNKT”) cell therapies to treat cancer and other immune-mediated diseases. iNKT cells are a distinct T cell population that combine durable memory responses with the rapid cytolytic features of natural killer (“NK”) cells. iNKT cells offer distinct therapeutic advantages as a platform for allogeneic therapy in that the cells naturally home to tissues, aid clearance of tumors and infected cells and suppress Graft versus Host Disease (“GvHD”). Our proprietary platform is designed to facilitate scalable and reproducible manufacturing for off-the-shelf delivery. As such, we believe that our approach represents a highly versatile application for therapeutic development in cancer and immune diseases. We are leveraging our platform and manufacturing capabilities to develop a wholly owned or exclusively licensed pipeline of both native and engineered iNKT cells.

Our business activities include product research and development, manufacturing, regulatory and clinical development, corporate finance, and support of our collaborations. To be successful, our product candidates require clinical trials and approvals from regulatory agencies, as well as acceptance in the marketplace. We are a party to an Amended and Restated Intercompany Services Agreement and an Intellectual Property Assignment and License Agreement with Agenus. Under the Amended and Restated Intercompany Services Agreement, Agenus provides us with certain general and administrative support, including, without limitation, financial, facilities management, human resources and information technology administrative support, and we and Agenus provide each other with certain research and development services and other support services, including legal and regulatory support. We are also entitled to use Agenus’ business offices and laboratory space and equipment in exchange for us contributing a proportionate payment for the use of such facilities and equipment, and we will be covered by certain Agenus insurance policies, subject to certain conditions, including us paying the cost of such coverage. Under the Intellectual Property Assignment and License Agreement, Agenus exclusively assigned patent rights and know-how related to our technology to us. We also have a field-limited exclusive license under certain Agenus patents and know-how; and we retain the rights to expand a proprietary pipeline of products and technologies.

Our most advanced product candidate, agenT-797, is an off-the-shelf, allogeneic, native iNKT cell therapy. iNKTs are a potent class of immune cells and serve as master regulators of immune response, possessing the killing power of NK cells and the memory of T-cells. Our proprietary manufacturing platform allows these cells to be infused in billion-fold numbers, arming the immune system against cancer and other life-threatening diseases. We have established and launched in-house iNKT cell manufacturing and product release capacity to supply more than 5,000 doses per year through a U.S. Food and Drug Administration (“FDA”)-cleared scalable, fully closed, and automatic process. Our Phase 1 clinical trial studying agenT-797 in solid tumor cancers, as a monotherapy and in combination with anti-PD-1 checkpoint inhibitors, pembrolizumab and nivolumab, is currently advancing as a priority program. Encouraging activity was seen with agenT-797 monotherapy and combination, with durable responses and disease stabilization in patients, which was presented at the American Association for Cancer Research (“AACR”) and more recently at the Society of Immunotherapy for Cancer (“SITC”) conference in November 2023.

In our Phase 1 clinical trial, most recently presented at SITC 2023, agenT-797 demonstrated a durable clinical benefit and a tolerable safety profile across various heavily pre-treated solid tumors. This includes non-small cell lung cancer (“NSCLC”), testicular cancer, and gastric cancer. Notably, the median progression-free survival (“PFS”) exceeded six months. Approximately 30% of patients experienced durable disease stabilization, even in cancers that were refractory to all prior therapies, such as pembrolizumab and nivolumab. This was observed in multiple cancer types, including but not limited to NSCLC and testicular cancer. Significantly, a patient with metastatic gastric cancer, who had not responded to anti-PD-1 therapy and standard chemotherapy, achieved a partial response when treated with agenT-797 in combination with nivolumab. This response was ongoing at 10 months. The safety profile of agenT-797 was tolerable, both as a standalone treatment and in combination with PD-1 inhibitors. Treatment doses up to one billion cells showed no neurotoxicity, dose-limiting toxicities, or severe cytokine release syndrome (above grade 3).

Building on these encouraging results, we plan to conduct a randomized phase 1/2 expansion trial. This trial will assess the efficacy of agenT-797 in combination with standard-of-care chemotherapy and immune therapy (pembrolizumab/nivolumab), with or without Agenus’ multifunctional anti-CTLA-4 agent, botensilimab, in relapsed/refractory gastric cancer.

We reported updated data from our Phase 1 clinical trial of agenT-797 in viral acute respiratory distress syndrome (“ARDS”) at the 2023 American Thoracic Society International Conference. We reported an encouraging survival benefit of 75%, compared to ~10-22% in an in-hospital control and time-matched data from the Centers for Disease Control and Prevention. Notably, in addition to a survival benefit, we reported observations that agenT-797 improved lung function and significantly reduced inflammation and secondary infections in the population. There are currently no approved therapies for ARDS and secondary infections are a significant contributor to comorbidity and death in intensive care units; our data contribute favorably as a potential therapeutic and we plan to advance agenT-797 in viral ARDS through strategic collaborations and non-dilutive external financing. Discussions are underway.

In addition, we completed a Phase 1 clinical trial of agenT-797 for the treatment of multiple myeloma and reported at SITC in 2022 that agenT-797 was tolerable to a billion cells/dose and suppressed biomarkers associated with disease progression. This proof of concept Phase 1 underscores the potential application of INKT cells in multiple myeloma and we believe supports the advancement of our armored B cell maturation antigen (“BCMA”)-CAR-INKT program as a potential best in class next generation allogeneic BCMA cell therapy for these patients. Strategic discussions to advance this program are underway.

We are also advancing a pipeline of next-generation allogeneic, engineered iNKT programs. Our two most advanced engineered programs are (1) MiNK-215, an IL-15 armored tumor stromal targeting FAP-CAR-iNKT and (2) MiNK-413, an IL-15 armored CAR-iNKT program targeting BCMA program. MiNK-413 has demonstrated tumor clearance and improved persistence in preclinical models, as well as manufacturing and logistical improvements over current BCMA cell therapies. MiNK-215 has demonstrated efficacy in NSCLC and melanoma preclinical models, promoting curative responses, eliminating tumor burden in the lungs, and enhancing tumor specific CD8+ T cell infiltration through tumor stroma. These data and programs were presented at AACR in 2024, International Cancer Immunotherapy Conference ("CICON") in 2023, SITC in 2023, and the American Society of Cell and Gene Therapy ("ASGCT") in 2023. Investigational new drug (“IND”) enabling activities are underway we expect to submit an IND to the FDA in 2024.

In December 2023, we announced a collaboration with ImmunoScape, Inc. ("ImmunoScape") to discover and develop next-generation T-cell receptor therapies against novel targets in solid tumors. We will combine our unique, proprietary library of T cell antigens with ImmunoScape’s platform for rapid discovery of novel T cell receptors.

Historical Results of Operations

Three Months Ended March 31, 2024 Compared to the Three Months Ended March 31, 2023

Research and development expense

Research and development (“R&D”) expense includes the costs associated with our internal research and development activities, including compensation and benefits, occupancy costs, manufacturing costs, costs of expert consultants, and administrative costs. R&D expense decreased 39% to $2.5 million for the three months ended March 31, 2024 from $4.2 million for the three months ended March 31, 2023. This decrease is primarily due to decreased costs associated with both the timing of our clinical trials and pre-clinical activities as well as decreased personnel costs, primarily due to decreased headcount.

General and administrative expense

General and administrative (“G&A”) expense consists primarily of personnel costs, facility expenses, and professional fees. G&A expense decreased 23% to $1.3 million for the three months ended March 31, 2024 from $1.7 million for the three months ended March 31, 2023. This decrease is primarily due to decreased share based compensation expense.

Interest income, net

Interest income decreased $151,000 for the three months ended March 31, 2024, from income of approximately $168,000 for the three months ended March 31, 2023 to income of approximately $17,000 for the three months ended March 31, 2024, primarily due to decreased interest earned on our money market funds.

Research and Development Programs

R&D program costs include compensation and other direct costs plus an allocation of indirect costs, based on certain assumptions.

Our product candidates are in various stages of development and significant additional expenditures will be required if we start new clinical trials, encounter delays in our programs, apply for regulatory approvals, continue development of our technologies, expand our operations and/or bring our product candidates to market. The total cost of any particular clinical trial is dependent on a number of factors such as trial design, length of the trial, number of clinical sites, number of patients and trial sponsorship. The process of obtaining and maintaining regulatory approvals for new products is lengthy, expensive and uncertain. Because of the current stage of our product candidates, among other factors, we are unable to reliably estimate the cost of completing our research and development programs or the timing for bringing such programs to various markets or substantial partnering or out-licensing arrangements, and, therefore, when, if ever, material cash inflows are likely to commence.

Liquidity and Capital Resources

We have incurred annual operating losses since inception in 2017, and we had an accumulated deficit of $137.2 million as of March 31, 2024. We expect to incur losses over the next several years as we continue development of our technologies and product candidates, manage our regulatory processes, initiate and continue clinical trials, and prepare for potential commercialization of products.

In October 2021, we completed an initial public offering of 3,333,334 shares of our common stock, at a public offering price of $12.00 per share. The gross proceeds from the offering, before deducting underwriting discounts, commissions and other offering expenses, were approximately $46.0 million, which includes the exercise of the underwriters option to acquire an additional 500,000 shares at the public offering price, which shares were delivered in November 2021. Underwriting discounts, commissions and other offering expenses, were approximately $6.2 million, resulting in net proceeds of approximately $39.8 million.

In December 2018, we entered into an agreement with the Walloon Region in which the Walloon Region agreed to provide a grant of up to €1.3 million and an advance of up to €8.3 million for the development of one of our research programs. As of March 31, 2024, we had received $881,000 of the grant portion and $5.2 million of the advance. During 2020, we discontinued research efforts related to this program, and in 2021 we provided additional information as requested by the Walloon Region to terminate the agreement. We recognized the grant portion received as income during the years ended December 31, 2019 and 2020. We learned in the second quarter of 2022 that the Walloon Region had obtained a default judgment in the amount of €2,086,712 for repayment of the advance. In view of the default judgment, we reduced the recorded liability and recorded a gain of approximately $2.7 million in our consolidated statement of operations for the year ended December 31, 2022. We have included the remaining balance of $2.3 million in other current liabilities in our condensed consolidated balance sheet at March 31, 2024.

We had a related party note (the "Note") outstanding as of March 31, 2024 of $5.0 million in principal plus accrued and unpaid interest of approximately $4,000. The Note provides that we will pay Agenus on demand the principal amount outstanding, together with any unpaid interest, on or after January 1, 2026. In the event of a qualified financing event, as described in the Note, at Agenus’ election, we must pay the principal amount outstanding and any unpaid interest, either in full or in the form of equity securities.

Our cash and cash equivalents balance as of March 31, 2024 was $5.8 million. We believe that our cash and cash equivalents balance, along with additional funding of $5.8 million received after quarter end (see Note 11), will be sufficient to satisfy our liquidity requirements for more than one year from when these financial statements were issued. Because we are dependent on our parent, Agenus, for certain services and deferral of related payments as discussed in Note 7, and Agenus has recently disclosed the existence of a substantial doubt about its ability to continue as a going concern, in accordance with the relevant accounting guidance, we are also required to disclose that substantial doubt exists about our ability to continue as a going concern for a period of one year after the date of filing of this Quarterly Report on Form 10-Q. To support our liquidity requirements beyond one year from when these financial statements are issued we will require additional funding. The financial statements have been prepared on a basis that assumes we will continue as a going concern and which contemplates the realization of assets and satisfaction of liabilities and commitments in the ordinary course of business.

Management continually monitors our liquidity position and adjusts spending as needed in order to preserve liquidity. Potential sources of additional funding include: (1) seeking strategic partnerships and collaborations, as well as out-licensing opportunities, for our portfolio programs and product candidates, (2) exploring avenues for securing non-dilutive financing, such as grants and collaborations to strengthen our balance sheet, and (3) potential of equity or debt financing options. If additional funding is not obtained through these sources, Agenus has indicated a willingness to loan us additional funds to finance our operations.

Net cash used in operating activities for the three months ended March 31, 2024 and 2023 was $2.5 million and $4.4 million, respectively. Our future ability to generate cash from operations will depend on achieving regulatory approval and market acceptance of our product candidates, and our ability to enter into collaborations.

Forward-Looking Statements

This Quarterly Report on Form 10-Q and other written and oral statements we make from time to time contain certain “forward-looking” statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 (the “Exchange Act”). You can identify these forward-looking statements by the fact they use words such as “could,” “expect,” “anticipate,” “estimate,” “target,” “may,” “project,” “guidance,” “intend,” “plan,” “believe,” “will,” “potential,” “opportunity,” and “future,” and other words and terms of similar meaning and expression in connection with any discussion of future operating or financial performance. You can also identify forward-looking statements by the fact that they do not relate strictly to historical or current facts. Such forward-looking statements are based on current expectations and involve inherent risks and uncertainties, including factors that could delay, divert or change any of them, and could cause actual outcomes to differ materially from current expectations. These statements relate to, among other things, our business strategy, our research and development, our product development efforts, our ability to develop, including our ability to develop and obtain licensure of agenT-797, MiNK-215, and MiNK-413, our prospects for initiating partnerships or collaborations, the timing of the introduction of products, the effect of new accounting pronouncements, uncertainty regarding our future operating results and our profitability, our cash runway and anticipated sources of funds as well as our plans, objectives, expectations, and intentions.

More detailed descriptions of these risks and uncertainties and other risks and uncertainties applicable to our business that we believe could cause actual results to differ materially from any forward-looking statements are included in in Part I-Item 1A “Risk Factors” of our Annual Report on Form 10-K for the fiscal year ended December 31, 2023. We encourage you to read those descriptions carefully. Although we believe we have been prudent in our plans and assumptions, no assurance can be given that any goal or plan set forth in forward-looking statements can be achieved. We caution investors not to place significant reliance on forward-looking statements contained in this document; such statements need to be evaluated in light of all the information contained

in this document. Furthermore, the statements speak only as of the date of this document, and we undertake no obligation to update or revise these statements.

JOBS Act

We qualify as an “emerging growth company” as defined in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). As an emerging growth company, we may take advantage of specified reduced disclosure and other requirements that are otherwise applicable generally to public companies, including reduced disclosure about our executive compensation arrangements, exemption from the requirements to hold non-binding advisory votes on executive compensation and golden parachute payments and exemption from the auditor attestation requirement in the assessment of our internal control over financial reporting.

We may take advantage of these exemptions until the last day of the fiscal year following the fifth anniversary of our initial public offering or such earlier time that we are no longer an emerging growth company. We would cease to be an emerging growth company earlier if we have more than $1.235 billion in annual revenue, we have more than $700.0 million in market value of our stock held by non-affiliates (and we have been a public company for at least 12 months and have filed one annual report on Form 10-K) or we issue more than $1.0 billion of non-convertible debt securities over a three-year period. For so long as we remain an emerging growth company, we are permitted, and intend, to rely on exemptions from certain disclosure requirements that are applicable to other public companies that are not emerging growth companies. We may choose to take advantage of some, but not all, of the available exemptions.

In addition, the JOBS Act provides that an emerging growth company can take advantage of an extended transition period for complying with new or revised accounting standards. This allows an emerging growth company to delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected not to “opt out” of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, we will adopt the new or revised standard at the time private companies adopt the new or revised standard and will do so until such time that we either (i) irrevocably elect to “opt out” of such extended transition period or (ii) no longer qualify as an emerging growth company. Therefore, the reported results of operations contained in our consolidated financial statements may not be directly comparable to those of other public companies.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

This item is not required for smaller reporting companies.

Item 4. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our Principal Executive Officer and Principal Financial Officer, we conducted an evaluation of the effectiveness of our disclosure controls and procedures, as such term is defined under Rule 13a-15(e) and Rule 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Based on this evaluation, our Principal Executive Officer and our Principal Financial Officer concluded that, as of the end of the period covered by this Quarterly Report on Form 10-Q, our disclosure controls and procedures were effective and were designed to ensure that information we are required to disclose in the reports that we file or submit under the Exchange Act is accumulated and communicated to management, including our Principal Executive Officer and Principal Financial Officer, as appropriate, to allow timely decisions regarding required disclosure, and is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. It should be noted that any system of controls is designed to provide reasonable, but not absolute, assurances that the system will achieve its stated goals under all reasonably foreseeable circumstances. Our Principal Executive Officer and Principal Financial Officer have each concluded that our disclosure controls and procedures as of the end of the period covered by this report are effective at a level that provides such reasonable assurances.

Changes in Internal Control Over Financial Reporting

There was no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the three months ended March 31, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II—OTHER INFORMATION

Item 1. Legal Proceedings.

We are not a party to any material legal proceedings.

Item 1A. Risk Factors.

Our results of operations and financial condition are subject to numerous risks and uncertainties described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023. There have been no material changes to the risk factors described in Part I, Item 1A "Risk Factors" of our 2023 Form 10-K.

Item 5. Other Information.

Trading Plans of Our Directors and Officers

During the quarter ended March 31, 2024, none of our directors or executive officers adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each item is defined in Item 408 of Regulation S-K.

Item 6. Exhibits.