Company Quick10K Filing
Iridium Communications
Price22.10 EPS-0
Shares132 P/E-47
MCap2,910 P/FCF45
Net Debt-367 EBIT27
TTM 2019-09-30, in MM, except price, ratios
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IRDM 10Q Quarterly Report

Part I.
Item 2.Management's Discussion and Analysis of Financial Condition and Results of Operations.
Item 3.Quantitative and Qualitative Disclosures About Market Risk.
Item 4.Controls and Procedures.
Part II.
Item 1. Legal Proceedings.
Item 1A. Risk Factors.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.
Item 3. Defaults Upon Senior Securities.
Item 4. Mine Safety Disclosures.
Item 5. Other Information.
Item 6. Exhibits.
EX-10.2 irdm10-q33121exx102.htm
EX-31.1 irdm10-q33121exx311.htm
EX-31.2 irdm10-q33121exx312.htm
EX-32.1 irdm10-q33121exx321.htm

Iridium Communications Earnings 2021-03-31

Balance SheetIncome StatementCash Flow
Assets, Equity
Rev, G Profit, Net Income
Ops, Inv, Fin

0001418819--12-31Large Accelerated 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(Mark One)
For the Quarterly Period Ended March 31, 2021
Commission File Number 001-33963  
Iridium Communications Inc.
(Exact name of registrant as specified in its charter)
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
1750 Tysons Boulevard, Suite 1400, McLean, VA 22102
(Address of principal executive offices, including zip code)
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Exchange Act:
Title of Each ClassTrading SymbolName of Each Exchange on Which Registered
Common Stock, $0.001 par valueIRDMThe Nasdaq Stock Market LLC
(Nasdaq Global Select Market)
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  x    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 during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  x    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 Filerx  Accelerated Filer¨
Non-Accelerated Filer¨ Smaller 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 is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes      No  x
The number of shares of the registrant’s common stock, par value $0.001 per share, outstanding as of April 14, 2021 was 133,478,837.

Item No.     Page
ITEM  2.  
ITEM  3.  
ITEM  4.  
ITEM  1.  
ITEM  1A.  
ITEM  2.  
ITEM  3.  
ITEM  4.  
ITEM  5.  
ITEM  6.  


Iridium Communications Inc.
Condensed Consolidated Balance Sheets
(In thousands, except per share data)
 March 31,
December 31, 2020
Current assets:
Cash and cash equivalents$214,835 $237,178 
Marketable securities7,481 7,548 
Accounts receivable, net59,895 61,151 
Inventory30,015 32,480 
Prepaid expenses and other current assets10,087 9,464 
Total current assets322,313 347,821 
Property and equipment, net2,851,145 2,917,076 
Other assets47,983 50,548 
Intangible assets, net45,117 45,504 
Total assets$3,266,558 $3,360,949 
Liabilities and stockholders’ equity  
Current liabilities:  
Short-term secured debt$16,500 $16,766 
Accounts payable9,909 14,390 
Accrued expenses and other current liabilities34,503 49,504 
Deferred revenue27,405 32,412 
Total current liabilities88,317 113,072 
Long-term secured debt, net1,593,955 1,596,893 
Deferred income tax liabilities, net146,233 155,084 
Deferred revenue, net of current portion50,017 51,258 
Other long-term liabilities24,258 25,203 
Total liabilities1,902,780 1,941,510 
Commitments and contingencies
Stockholders’ equity:  
Common stock, $0.001 par value, 300,000 shares authorized, 133,476 and 134,056 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively133 134 
Additional paid-in capital1,152,569 1,160,570 
Retained earnings225,170 275,915 
Accumulated other comprehensive loss, net of tax(14,094)(17,180)
Total stockholders’ equity1,363,778 1,419,439 
Total liabilities and stockholders’ equity$3,266,558 $3,360,949 

See notes to unaudited condensed consolidated financial statements.

Iridium Communications Inc.
Condensed Consolidated Statements of Operations and Comprehensive Loss
(In thousands, except per share amounts)
Three Months Ended March 31,
Services$116,152 $115,975 
Subscriber equipment23,953 22,263 
Engineering and support services6,430 7,049 
Total revenue146,535 145,287 
Operating expenses:  
Cost of services (exclusive of depreciation and amortization)23,207 21,978 
Cost of subscriber equipment13,028 12,274 
Research and development2,717 2,444 
Selling, general and administrative22,657 20,825 
Depreciation and amortization75,910 75,944 
Total operating expenses137,519 133,465 
Operating income9,016 11,822 
Other expense, net:  
Interest expense, net(22,769)(26,444)
Loss on extinguishment of debt (30,209)
Other income (expense), net(28)447 
Total other expense, net(22,797)(56,206)
Loss before income taxes(13,781)(44,384)
Income tax benefit 8,598 12,682 
Net loss(5,183)(31,702)
Weighted average shares outstanding - basic and diluted135,068 132,645 
Net loss attributable to common stockholders per share - basic and diluted$(0.04)$(0.24)
Comprehensive loss:
Net loss$(5,183)$(31,702)
Foreign currency translation adjustments(760)(3,986)
Unrealized gain (loss) on cash flow hedges, net of tax (see Note 6)
3,843 (11,888)
Unrealized gain on marketable securities, net of tax3  
Comprehensive loss$(2,097)$(47,576)

See notes to unaudited condensed consolidated financial statements.

Iridium Communications Inc.
Condensed Consolidated Statements of Changes in Stockholders’ Equity
(In thousands, except per share amounts)
Three Months Ended March 31, 2021Three Months Ended March 31, 2020
Additional Paid-In CapitalAccumulated
Other Comprehensive Loss
Total Stockholders' EquityAdditional Paid-In CapitalAccumulated
Other Comprehensive Loss
Total Stockholders' Equity
Common StockCommon Stock
Balances at beginning of period134,056 $134 $1,160,570 $(17,180)$275,915 $1,419,439 131,632 $132 $1,134,048 $(6,867)$331,969 $1,459,282 
Stock-based compensation— — 5,575 — — 5,575 — — 4,100 — — 4,100 
Stock options exercised and awards vested1,099 1 4,393 — — 4,394 713 — 1,171 — — 1,171 
Stock withheld to cover employee taxes(101)— (4,198)— — (4,198)(118)— (3,184)— — (3,184)
Repurchases and retirements of common stock(1,578)(2)(13,771)— (45,562)(59,335)— — — — — — 
Cumulative translation adjustments— — — (760)— (760)— — — (3,986)— (3,986)
Unrealized gain (loss) on cash flow hedge, net of tax— — — 3,843 — 3,843 — — — (11,888)— (11,888)
Unrealized gain on marketable securities, net of tax— — — 3 — 3 — — — — — — 
Net loss— — — — (5,183)(5,183)— — — — (31,702)(31,702)
Balances at end of period133,476 $133 $1,152,569 $(14,094)$225,170 $1,363,778 132,227 $132 $1,136,135 $(22,741)$300,267 $1,413,793 

See notes to unaudited condensed consolidated financial statements.

Iridium Communications Inc.
Condensed Consolidated Statements of Cash Flows
(In thousands)
 Three Months Ended March 31,
Cash flows from operating activities:
Net loss$(5,183)$(31,702)
Adjustments to reconcile net loss to net cash provided by operating activities:
Deferred income taxes(8,851)(17,150)
Depreciation and amortization75,910 75,944 
Loss on extinguishment of debt 30,209 
Stock-based compensation (net of amounts capitalized)4,906 3,698 
Amortization of deferred financing fees949 890 
All other items, net(519)(64)
Changes in operating assets and liabilities:
Accounts receivable1,535 3,600 
Inventory2,561 2,300 
Prepaid expenses and other current assets(634)(688)
Other assets967 2,769 
Accounts payable(4,233)2,320 
Accrued expenses and other current liabilities(9,474)(20,117)
Interest payable(46)(7,071)
Deferred revenue(6,156)(6,607)
Other long-term liabilities(966)2,482 
Net cash provided by operating activities50,766 40,813 
Cash flows from investing activities:  
Capital expenditures(9,417)(9,487)
Net cash used in investing activities(9,417)(9,487)
Cash flows from financing activities:  
Borrowings under the Term Loan 202,000 
Payments on the Term Loan(4,125) 
Repayments on the senior unsecured notes, including extinguishment costs (383,451)
Payment of deferred financing fees (2,562)
Proceeds from exercise of stock options4,394 1,172 
Tax payment upon settlement of stock awards(4,198)(3,184)
Repurchases of common stock(59,335) 
Net cash used in financing activities(63,264)(186,025)
Effect of exchange rate changes on cash and cash equivalents, and restricted cash(428)(1,573)
Net decrease in cash and cash equivalents, and restricted cash(22,343)(156,272)
Cash, cash equivalents, and restricted cash, beginning of period237,178 223,561 
Cash, cash equivalents, and restricted cash, end of period$214,835 $67,289 

See notes to unaudited condensed consolidated financial statements.

 Three Months Ended March 31,
Supplemental cash flow information:
Interest paid, net of amounts capitalized$21,842 $33,366 
Income taxes paid, net$520 $254 
Supplemental disclosure of non-cash investing and financing activities:  
Property and equipment received but not paid$3,163 $2,285 
Capitalized amortization of deferred financing costs$29 $21 
Capitalized stock-based compensation$669 $402 
Unrealized gain (loss) on cash flow hedges, net of tax$3,843 $(11,888)

See notes to unaudited condensed consolidated financial statements.

Iridium Communications Inc.
Notes to Condensed Consolidated Financial Statements
1. Basis of Presentation and Principles of Consolidation
Iridium Communications Inc. (the “Company”) has prepared its condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). The accompanying condensed consolidated financial statements include the accounts of (i) the Company, (ii) its wholly owned subsidiaries, and (iii) all less than wholly owned subsidiaries that the Company controls. All material intercompany transactions and balances have been eliminated.
In the opinion of management, the condensed consolidated financial statements reflect all normal recurring adjustments that the Company considers necessary for the fair presentation of its results of operations and cash flows for the interim periods covered, and of the financial position of the Company at the date of the interim condensed consolidated balance sheet. The operating results for interim periods are not necessarily indicative of the operating results for the entire year. Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to instructions, rules and regulations prescribed by the U.S. Securities and Exchange Commission (“SEC”). These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10‑K for the year ended December 31, 2020, as filed with the SEC on February 11, 2021.

2. Significant Accounting Policies

Adopted Accounting Pronouncements

In December 2019, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (“ASU 2019-12”). This guidance amends certain aspects of the accounting for income taxes. Adoption of ASU 2019-12 had no impact on the Company's consolidated financial statements and related disclosures.

Recent Accounting Developments Not Yet Adopted

In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASU 2020-04”). The guidance provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships, and other transactions that reference London Inter-bank Offered Rate (“LIBOR”) or another reference rate expected to be discontinued. ASU 2020-04 was further amended in January 2021 by ASU 2021-01 which clarified the applicability of certain provisions. Both ASU 2020-04 and ASU 2021-01 are currently effective prospectively for all entities through December 21, 2022 when the reference rate replacement activity is expected to have completed. The guidance in ASU 2020-04 and ASU 2021-01 is optional and may be elected over time as reference rate reform activities occur. As of March 31, 2021, the Company has not yet modified any contracts as a result of reference rate reform and is evaluating the impact this standard may have on its consolidated financial statements.

Fair Value Measurements

The Company evaluates assets and liabilities subject to fair value measurements on a recurring and non-recurring basis to determine the appropriate level to classify them for each reporting period. This determination requires significant judgments to be made by management of the Company. Fair value is the price that would be received from the sale of an asset or paid to transfer a liability assuming an orderly transaction in the most advantageous market at the measurement date. U.S. GAAP establishes a hierarchical disclosure framework which prioritizes and ranks the level of observability of inputs used in measuring fair value.

The fair value hierarchy consists of the following tiers:

Level 1, defined as observable inputs such as quoted prices in active markets for identical assets or liabilities;

Level 2, defined as observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and

Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.


The carrying values of the following financial instruments approximated their fair values as of March 31, 2021 and December 31, 2020: cash and cash equivalents, prepaid expenses and other current assets, accounts receivable, accounts payable, and accrued expenses and other current liabilities. Fair values approximate their carrying values because of their short-term nature. The Level 2 cash equivalents include money market funds, commercial paper and short-term U.S. agency securities. The Company also classifies its fixed income debt investments and derivative financial instruments as Level 2. The Company did not hold any Level 3 assets as of March 31, 2021 and December 31, 2020.

The fair values of the Company’s Level 2 estimates are based upon certain market assumptions and information available to the Company. In determining fair value, the Company uses a market approach utilizing valuation models that incorporate observable inputs such as interest rates, bond yields and quoted prices for similar assets.


For new leases, the Company will determine if an arrangement is or contains a lease at inception. Leases are included as right-of-use (“ROU”) assets within other assets and ROU liabilities within accrued expenses and other liabilities and within other long-term liabilities on the Company’s condensed consolidated balance sheets.

ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. Certain leases contain variable contractual obligations as a result of future base rate escalations which are estimated based on observed trends and included within the measurement of present value. The Company’s leases do not provide an implicit rate. The Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The ROU asset also includes any lease payments made and excludes lease incentives. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

The Company has lease agreements with lease and non-lease components, which are generally accounted for separately. For certain leases, such as teleport network (“TPN”) facilities, the Company elected the practical expedient to combine lease and non-lease components as a single lease component. Taxes assessed on leases in which the Company is either a lessor or lessee are excluded from contract consideration and variable payments when measuring new lease contracts or remeasuring existing lease contracts.

Derivative Financial Instruments

The Company uses interest rate swap agreements to manage its exposures to fluctuating interest rate risk on variable rate debt. Its derivatives are measured at fair value and are recorded on the balance sheets within other current and other long-term liabilities. The Company’s derivatives are designated as cash flow hedges, with the effective portion of the changes in fair value of the derivatives recorded in accumulated other comprehensive loss within the Company’s consolidated balance sheets and subsequently recognized in earnings when the hedged items impact earnings. Any ineffective portion of cash flow hedges would be recorded in current earnings. Within the consolidated statements of operations and comprehensive loss, the gains and losses related to cash flow hedges are recognized within interest income (expense), net, as this is the same financial statement line item used for any gains or losses associated with the hedged items. Cash flows from hedging activities are included in operating activities within the company’s consolidated statements of cash flows, which is the same category as the items being hedged. See Note 6 for further information.

3. Cash and Cash Equivalents and Restricted Cash and Cash Equivalents

Cash and Cash Equivalents

The following table summarizes the Company’s cash and cash equivalents:
March 31, 2021December 31, 2020Recurring Fair
Value Measurement
 (in thousands) 
Cash and cash equivalents: 
Cash$13,668 $27,168  
Money market funds$201,167 $208,005 Level 2
Fixed income debt securities$ $2,005 Level 2
Total cash and cash equivalents$214,835 $237,178  


Marketable Securities

As of March 31, 2021, the Company's marketable securities consisted of only fixed income debt securities. The amortized cost of these securities amounted to $7.5 million and $7.6 million as of March 31, 2021 and December 31, 2020, respectively. The estimated fair value of these securities amounted to $7.5 million as of each of March 31, 2021 and December 31, 2020. The gross unrealized gains and gross unrealized losses on these marketable securities were not material as of March 31, 2021 and December 31, 2020. All marketable securities are classified as Level 2 investments in the fair value hierarchy. The Company determined that any decline in fair value of these investments is temporary as the Company does not intend to sell these securities and it is not likely that the Company will be required to sell the securities before the recovery of their amortized cost basis.

The following table presents the contractual maturities of the Company's fixed income debt securities:

March 31, 2021December 31, 2020
Amortized CostFair ValueAmortized CostFair Value
(In thousands)(In thousands)
Mature within one year$5,469 $5,466 $5,530 $5,525 
Mature after one year and within three years2,015 2,015 2,024 2,023 
Total$7,484 $7,481 $7,554 $7,548 

4. Leases

Lessor Arrangements
Operating leases in which the Company is a lessor consist primarily of hosting agreements with Aireon LLC (“Aireon”) (see Note 12) and L3Harris Technologies, Inc. (“L3Harris”) for space on the Company’s satellites. These agreements provide for a fee that will be recognized over the life of the satellites, currently estimated to be approximately 12.5 years. Lease income related to these agreements was $5.4 million for each of the three months ended March 31, 2021 and 2020. Lease income is recorded as hosted payload and other data service revenue within service revenue on the Company’s condensed consolidated statements of operations and comprehensive loss.

Both Aireon and L3Harris have made payments pursuant to their hosting agreements and the Company expects they will continue to do so. Future income with respect to the Company’s operating leases in which it is the lessor existing at March 31, 2021, exclusive of the $5.4 million recognized during the three months ended March 31, 2021, by year and in the aggregate, is as follows:
Year Ending December 31,Amount
(in thousands)
Total lease income$200,771 

5. Debt

Term Loan and Revolving Facility

On November 4, 2019, pursuant to a loan agreement (as amended to date, the “Credit Agreement”) the Company entered into a $1,450.0 million term loan with Deutsche Bank AG (the “Term Loan”) and an accompanying $100.0 million revolving loan (the “Revolving Facility”). The Term Loan was issued at a price equal to 99.5% of its face value. While it initially bore interest at an annual rate of LIBOR plus 3.75%, with a 1.0% LIBOR floor, it was repriced in January 2021. It now bears interest at an annual rate of LIBOR plus 2.75%, with a 1.0% LIBOR floor, with a maturity date in November 2026. The interest rate on the Revolving Facility remains at LIBOR plus 3.75% with no LIBOR floor, and a maturity date in November 2024. Principal payments, which are payable quarterly and began on June 30, 2020, equal $16.5 million per annum (one percent of the full

amount of the loan following the additional $200.0 million drawn on February 7, 2020, as noted below), with the remaining principal due upon maturity.

On February 7, 2020, the Company closed on an additional $200.0 million under its Term Loan. On February 13, 2020, the Company used these proceeds, together with cash on hand, to prepay and retire all of the indebtedness outstanding under the senior unsecured notes (the “Notes”), including premiums for early prepayment. The additional amount is fungible with the original $1,450.0 million, having the same maturity date, interest rate and other terms, but was issued at a 1.0% premium to face value. To prepay the Notes, the Company paid a call price equal to the present value at the redemption rate of (i) 105.125% of the $360.0 million principal amount of the Notes plus (ii) all interest due through the first call date in April 2020, representing a total call premium of $23.5 million, plus all accrued and unpaid interest to the redemption date. As a result of the prepayment, the Company also wrote off the remaining unamortized debt issuance costs, which resulted in a $30.2 million loss on extinguishment of debt.

As of March 31, 2021 and December 31, 2020, the Company reported an aggregate of $1,633.5 million and $1,637.6 million in borrowings under the Term Loan, respectively. These amounts are before $23.0 million and $24.0 million of net unamortized deferred financing costs as of March 31, 2021 and December 31, 2020, respectively. The net principal balance in borrowings in the accompanying consolidated balance sheets as of March 31, 2021 and December 31, 2020 amounted to $1,610.5 million and $1,613.6 million, respectively. As of March 31, 2021 and December 31, 2020, based upon over-the-counter bid levels (Level 2 - market approach), the fair value of the borrowings under the Term Loan due in 2026 was $1,638.6 million and $1,647.9 million, respectively. The Company had not borrowed under the Revolving Facility as of March 31, 2021 and December 31, 2020.

The Credit Agreement restricts the Company’s ability to incur liens, engage in mergers or asset sales, pay dividends, repay subordinated indebtedness, incur indebtedness, make investments and loans, and engage in other transactions as specified in the Credit Agreement, and also contains a mandatory prepayment sweep mechanism with respect to a portion of the Company’s excess cash flow (as defined in the Credit Agreement). The Credit Agreement provides for specified exceptions, baskets measured as a percentage of trailing twelve months of earnings before interest, taxes, depreciation and amortization (“EBITDA”), and unlimited exceptions in the case of incurring indebtedness and liens and making investments, dividend payments, and payments of subordinated indebtedness, as well as a phase-out of the mandatory excess cash flow prepayments, based on achievement and maintenance of specified leverage ratios. The Company’s mandatory excess cash flow prepayment, as specified in the Credit Agreement, was $12.7 million as of December 31, 2020. This amount will be paid in the second quarter of 2021 and counts towards the Company's required quarterly principal payments. As such, it was classified under current short-term secured debt in the Company’s consolidated balance sheet as of March 31, 2021. The Credit Agreement permits repayment, prepayment, and repricing transactions.

The Credit Agreement contains no financial maintenance covenants with respect to the Term Loan. With respect to the Revolving Facility, the Credit Agreement requires the Company to maintain a consolidated first lien net leverage ratio (as defined in the Credit Agreement) of no greater than 6.25 to 1 if more than 35% of the Revolving Facility has been drawn. The Credit Agreement contains other customary representations and warranties, affirmative and negative covenants, and events of default. The Company was in compliance with all covenants as of March 31, 2021.

Interest on Debt

Total interest incurred was $23.8 million and $27.9 million during the three months ended March 31, 2021 and 2020, respectively. To reprice the Term Loan, the Company incurred financing costs of $3.6 million, which were expensed and are included within interest expense on the condensed consolidated statements of operations and comprehensive loss for the three months ended March 31, 2021. There were no such costs during the three months ended March 31, 2020. Interest incurred includes amortization of deferred financing fees of $1.0 million and $0.9 million during the three months ended March 31, 2021 and 2020, respectively. Interest capitalized was $0.6 million and $0.7 million during the three months ended March 31, 2021 and 2020, respectively. Accrued interest was $0.2 million as of each of March 31, 2021 and December 31, 2020.

6. Derivative Financial Instruments

The Company is exposed to interest rate fluctuations related to its Term Loan. The Company has reduced its exposure to fluctuations in the cash flows associated with changes in the variable interest rate by entering into offsetting positions through the use of interest rate swap contracts which result in recognizing a fixed interest rate for the portion of the Term Loan. This will reduce the negative impact of increases in the variable rate over the term of the interest rate swap contracts. These financial instruments are not used for trading or other speculative purposes. Historically, the Company has not incurred, and does not expect to incur in the future, any losses as a result of counterparty default.


Hedge effectiveness of interest rate swap contracts is based on a long-haul hypothetical derivative methodology and includes all changes in value. The Company formally assesses, both at the hedge’s inception and on an ongoing quarterly basis, whether the designated derivative instruments are highly effective in offsetting changes in the cash flows of the hedged items. When the hedging instrument is sold, expires, is terminated or is exercised, or no longer qualifies for hedge accounting, or is no longer probable, hedge accounting is discontinued prospectively.

Interest Rate Swaps

On November 27, 2019, the Company executed a long-term interest rate swap (“Swap”) effective through November 2021 to mitigate variability in forecasted interest payments on a portion of the Company’s borrowings under its Term Loan. On the last business day of each month, the Company receives variable interest payments based on one-month LIBOR from the counterparty. The Company also entered into an interest rate swaption agreement (“Swaption”) that, if executed on November 22, 2021, would extend the Company's Swap through November 2026. The Company pays a fixed annual rate of 0.50% for the Swaption and a fixed rate of 1.565% on the Swap. Both the Swap and the Swaption derivative instruments carried a notional amount of $1,000.0 million as of March 31, 2021 and December 31, 2020. The Company has designated both the Swap and Swaption as qualifying hedging instruments and accounts for these derivatives as cash flow hedges.

At inception, the Swap and Swaption were designated as cash flow hedges for hedge accounting. The unrealized changes in market value are recorded in accumulated other comprehensive loss and reclassified into earnings during the period in which the hedged transaction affects earnings. Over the next 12 months, the Company expects any gains or losses for cash flow hedges reclassified from accumulated other comprehensive loss into earnings to have an immaterial impact on the Company’s condensed consolidated financial statements.
Fair Value of Derivative Instruments

As of March 31, 2021, the Company had a current liability balance of $3.8 million and $0.8 million, for the fair value of the Swap and Swaption, respectively, recorded in other current liabilities. As of December 31, 2020, the Company had a current liability balance of $5.2 million and $4.4 million, for the fair value of the Swap and Swaption, respectively, recorded in other current liabilities.

During the three months ended March 31, 2021 and 2020, the Company collectively incurred $2.7 million and $1.0 million, respectively, in net interest expense for the Swap and the Swaption. Gains and losses resulting from fair value adjustments to the Swap and Swaption are recorded within accumulated other comprehensive loss within the Company’s condensed consolidated balance sheets and reclassified to interest expense on the dates that interest payments become due. Cash flows related to the Swap are included in cash flows from operating activities on the condensed consolidated statements of cash flows. The amount of unrealized loss related to the Swap and Swaption that was recorded in comprehensive loss in the condensed consolidated statements of operations and comprehensive loss was $3.8 million for the three months ended March 31, 2021, net of a $1.2 million tax impact, and $11.9 million for the three months ended March 31, 2020, net of a $4.2 million tax impact. There were no gains or losses related to derivative financial instruments during the three months ended March 31, 2020.

7. Stock-Based Compensation

In May 2019, the Company’s stockholders approved the amendment and restatement of the Company’s 2015 Equity Incentive Plan (as so amended and restated, the “Amended 2015 Plan”), primarily to increase the number of shares available under the plan. The Company registered with the SEC an additional 2,542,664 shares of common stock made available for issuance pursuant to the Amended 2015 Plan, bringing the total to 30,944,912 shares registered. As of March 31, 2021, the remaining aggregate number of shares of the Company’s common stock available for future grants under the Amended 2015 Plan was 10,445,256. The Amended 2015 Plan provides for the grant of stock-based awards, including nonqualified stock options, incentive stock options, restricted stock, restricted stock units (“RSUs”), stock appreciation rights and other equity securities to employees, consultants and non-employee directors of the Company and its affiliated entities. The number of shares of common stock available for issuance under the Amended 2015 Plan is reduced by (i) one share for each share of common stock issued pursuant to an appreciation award, such as a stock option or stock appreciation right with an exercise or strike price of at least 100% of the fair market value of the underlying common stock on the date of grant, and (ii) 1.8 shares for each share of common stock issued pursuant to any stock award that is not an appreciation award, also known as a “full value award.” The Amended 2015 Plan allows the Company to utilize a broad array of equity incentives and performance cash incentives in order to secure and retain the services of its employees, directors and consultants, and to provide long-term incentives that align the interests of its employees, directors and consultants with the interests of the Company’s stockholders. The Company accounts for stock-based compensation at fair value.


Stock Option Awards

The fair value of stock options is determined at the grant date using the Black-Scholes option pricing model. The stock option awards granted to employees generally (i) have a term of ten years, (ii) vest over four years with 25% vesting after the first year of service and the remainder vesting ratably on a quarterly basis thereafter, (iii) are contingent upon employment on the vesting date, and (iv) have an exercise price equal to the fair market value of the underlying shares at the date of grant.

The Company historically granted stock options to newly hired and promoted employees, but now almost exclusively utilizes RSUs. The Company did not grant any stock options during the three-month periods ended March 31, 2021 and 2020.

Restricted Stock Units

The RSUs granted to employees for service generally vest over four years, with 25% vesting on the first anniversary of the grant date and the remainder vesting ratably on a quarterly basis thereafter, subject to continued employment. The RSUs granted to non-employee directors generally vest in full on the first anniversary of the grant date. Some RSUs granted to employees for performance vest upon the completion of defined performance goals, subject to continued employment. The Company’s RSUs are generally classified as equity awards because the RSUs will be paid in the Company’s common stock upon vesting. The related compensation expense is recognized over the service period and is based on the grant date fair value of the Company’s common stock and the number of shares expected to vest. The fair value of the awards is not remeasured at the end of each reporting period. The awards do not carry voting rights until they are vested and released in accordance with the terms of the award.

Service-Based RSUs

The majority of the annual compensation the Company provides to members of its board of directors is paid in the form of RSUs. In addition, certain members of the Company’s board of directors elect to receive the remainder of their annual compensation, or a portion thereof, in the form of RSUs. An aggregate amount of approximately 35,000 and 58,000 service-based RSUs were granted to the Company’s directors as a result of these payments and elections during the three months ended March 31, 2021 and 2020, respectively, with an estimated grant date fair value of $1.4 million for each period.

During the three months ended March 31, 2021 and 2020, the Company granted approximately 437,000 and 632,000 service-based RSUs, respectively, to its employees, with an estimated aggregate grant date fair value of $18.3 million and $17.1 million, respectively.

The Company periodically grants RSUs to non-employee consultants that are generally subject to service-based vesting. The RSUs granted will vest 50% on the first anniversary of the grant date, and the remaining 50% will vest quarterly thereafter through the second anniversary of the grant date. No grants were made to non-employee consultants during the three months ended March 31, 2021 and 2020.

Performance-Based RSUs

In March 2021 and 2020, the Company granted approximately 228,000 and 115,000 annual incentive, performance-based RSUs, respectively, to the Company’s executives and employees (the “Bonus RSUs”), with an estimated grant date fair value of $9.5 million and $3.1 million, respectively. Vesting of the Bonus RSUs is and was dependent upon the Company’s achievement of defined performance goals over the respective fiscal year. The Company records stock-based compensation expense related to performance-based RSUs when it is considered probable that the performance conditions will be met. Management believes it is probable that substantially all of the 2021 Bonus RSUs will vest. The level of achievement, if any, of performance goals will be determined by the compensation committee of the Company’s board of directors and, if such goals are achieved, the 2021 Bonus RSUs will vest, subject to continued employment, in March 2022. Substantially all of the 2020 Bonus RSUs vested in March 2021 upon the determination of the level of achievement of the performance goals.

Additionally, in March 2021 and 2020, the Company granted approximately 110,000 and 144,000 long-term, performance-based RSUs, respectively, to the Company’s executives (the “Executive RSUs”). The estimated aggregate grant date fair value of the Executive RSUs was $4.6 million for the 2021 grants and $3.9 million for the 2020 grants. Vesting of the Executive RSUs is and was dependent upon the Company’s achievement of defined performance goals over a two-year period. The vesting of Executive RSUs will ultimately range from 0% to 150% of the number of shares underlying the Executive RSUs granted based on the level of achievement of the performance goals. If the Company achieves the performance goals, 50% of the number of Executive RSUs earned based on performance will vest on the second anniversary of the grant date, and the remaining 50% will vest on the third anniversary of the grant date, in each case, subject to the executive’s continued service as of the vesting date. During March 2021, the Company awarded approximately 3,000 additional shares related to performance-

based RSUs to the Company’s executives for over-achievement of performance targets related to the Executive RSUs granted in 2019.

8. Equity Transactions

Preferred Stock

The Company is authorized to issue 2.0 million shares of preferred stock with a par value of $0.0001 per share. The Company previously issued 1.5 million shares of preferred stock, and the remaining 0.5 million authorized shares of preferred stock remain undesignated and unissued as of March 31, 2021 and December 31, 2020. As of March 31, 2021 and December 31, 2020, there were no outstanding shares of preferred stock, as all preferred stock was converted in prior periods into common stock according to its terms.

Share Repurchases and Retirement

In February 2021, the Company announced that its Board of Directors had authorized the repurchase of up to $300.0 million of its common stock through December 31, 2022. This time frame can be extended or shortened by the Board of Directors. Repurchases, if any, will be made from time to time on the open market at prevailing prices or in negotiated transactions off the market. All shares are to be immediately retired upon repurchase in accordance with the board-approved policy. When treasury shares are retired, the Company’s policy is to allocate the excess of the repurchase price over the par value of shares acquired first, to additional paid-in capital, and then to retained earnings. The portion to be allocated to additional paid-in capital is calculated by applying a percentage, determined by dividing the number of shares to be retired by the number of shares outstanding, to the balance of additional paid-in capital as of the date of retirement.

During the three months ended March 31, 2021, the Company repurchased and subsequently retired 1,577,951 shares of its common stock for a total purchase price of approximately $59.2 million. In addition, in March 2021, the Company purchased 2,600 shares for approximately $0.1 million which were not settled and retired until April 2021. As such, these shares are recorded as treasury stock as of March 31, 2021. No shares were repurchased during the year ended December 31, 2020. As of March 31, 2021, $240.7 million remained available and authorized for repurchase under this program.

9. Revenue

The following table summarizes the Company’s services revenue:
 Three Months Ended March 31,
 (in thousands)
Commercial services revenue:
Voice and data $41,424 $42,240 
IoT data24,754 23,766 
Broadband9,434 8,700 
Hosted payload and other data14,790 16,269 
Total commercial services revenue90,402 90,975 
Government services revenue25,750 25,000 
Total services revenue$116,152 $115,975 

The following table summarizes the Company’s engineering and support services revenue:
 Three Months Ended March 31,
 (in thousands)
Commercial$746 $997 
Government5,684 6,052 
Total engineering and support services revenue$6,430 $7,049 


Approximately 30% and 35% of the Company's accounts receivable balance at March 31, 2021 and December 31, 2020 was due from prime contracts or subcontracts with agencies of the U.S. government.

The Company's contracts with customers generally do not contain performance obligations with terms in excess of one year. As such, the Company does not disclose details related to the value of performance obligations that are unsatisfied as of the end of the reporting period. The total value of any performance obligations that extend beyond a year are immaterial to the financial statements. The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and deferred revenue (contract liabilities) on the condensed consolidated balance sheets. The Company bills amounts under its agreed-upon contractual terms at periodic intervals (for services), upon shipment (for equipment), or upon achievement of contractual milestones or as work progresses (for engineering and support services). Billing may occur subsequent to revenue recognition, resulting in unbilled accounts receivable (contract assets). The Company may also receive payments from customers before revenue is recognized, resulting in deferred revenue (contract liabilities). The Company recognized revenue that was previously recorded as deferred revenue in the amounts of $11.6 million and $12.4 million during the three months ended March 31, 2021 and 2020, respectively. The Company has also recorded costs of obtaining contracts expected to be recovered in prepaid expenses and other current assets (contract assets or commissions), that are not separately disclosed on the condensed consolidated balance sheets. The commissions are recognized over the estimated prepaid usage period. The contract assets not separately disclosed are as follows:
March 31, 2021December 31, 2020
(in thousands)
Contract Assets:
Commissions$905 $993 
Other contract costs$2,784 $2,860 

10. Income Tax Benefit

Loss before income taxes was $13.8 million for the three months ended March 31, 2021, while the income tax benefit was $8.6 million. The effective tax rate was 63.81% which differed from the federal statutory rate of 21% primarily due to the net impact of the Company's U.S. tax credits, benefits from U.S. state tax losses and a discrete tax benefit associated with the stock compensation tax deduction. These favorable impacts were partially offset by the impact of the limitation on the tax deduction for executive compensation and a discrete tax expense associated with an increase to the prior year valuation allowance for state net operating losses.

Loss before income taxes was $44.4 million for the three months ended March 31, 2020, while the income tax benefit was $12.7 million. The effective tax rate was 28.53% which differed from the federal statutory rate of 21% primarily due to benefits from U.S. state tax losses and a discrete tax benefit associated with the stock compensation tax deduction. These favorable impacts were partially offset by the impact of the limitation on the tax deduction for executive compensation and additional U.S. tax on international operations.

11. Net Loss Per Share

The Company calculates basic net loss per share by dividing net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. In periods of net income, diluted net income per share takes into account the effect of potential dilutive common shares when the effect is dilutive. Potentially dilutive common shares include (i) common stock issuable upon exercise of outstanding stock options, and (ii) contingently issuable RSUs that are convertible into shares of common stock upon achievement of certain service and performance requirements. The effect of potentially dilutive common shares is computed using the treasury stock method.

The computations of basic and diluted net loss per share for the three months ended March 31, 2021 and 2020 are as follows:
 Three Months Ended March 31,
 (in thousands, except per share 
Net loss - basic and diluted
Weighted average common shares - basic and diluted
135,068 132,645 
Net loss per share - basic and diluted$(0.04)$(0.24)

Due to the Company’s net loss position for the three months ended March 31, 2021 and 2020, all potential common stock equivalents were anti-dilutive and therefore excluded from the calculation of diluted net loss per share. The incremental number of shares underlying stock options and RSUs outstanding with anti-dilutive effects, for the three months ended March 31, 2021 and 2020, were as follows:
 Three Months Ended March 31,
 (in thousands)
Anti-dilutive performance-based RSUs260 187 
Anti-dilutive service-based RSUs 210 
Anti-dilutive stock options 149 

12. Related Party Transactions

Aireon LLC and Aireon Holdings LLC

The Company's satellite constellation hosts the Aireon® system, which provides a global air traffic surveillance service through a series of automatic dependent surveillance-broadcast (“ADS-B”) receivers. The Company formed Aireon in 2011, with subsequent investments from the air navigation service providers (“ANSPs”) of Canada, Italy, Denmark, Ireland and the United Kingdom, to develop and market this service. Aireon has contracted to pay the Company a fee to host the ADS-B receivers on its constellation, as well as fees for power and data services in connection with the delivery of the air traffic surveillance data. Pursuant to agreements with Aireon, Aireon will pay the Company fees of $200.0 million to host the ADS-B receivers, of which $54.5 million had been paid as of March 31, 2021. Aireon also pays power fees of up to approximately $3.7 million per year (the “Hosting Agreement”), as well as data services fees of approximately $19.8 million per year for the delivery of the air traffic surveillance data (the “Data Services Agreement”). The Aireon ADS-B receivers were activated on an individual basis as the satellite on which the receiver is hosted began carrying traffic. Pursuant to ASU 2016-02, the Company considers the Hosting Agreement an operating lease. The Company recognized $4.0 million of hosting fee revenue for each of the three-month periods ended March 31, 2021 and 2020. The Company recorded power and data service revenue from Aireon of $5.9 million and $6.3 million for the three months ended March 31, 2021 and 2020, respectively.

Under two services agreements, the Company also provides Aireon with administrative services and support services, the fees for which are paid monthly. Aireon receivables due to the Company under all agreements totaled $2.3 million at each of March 31, 2021 and December 31, 2020.


In December 2018, in connection with Aireon's entry into a debt facility, the Company and the other Aireon investors contributed their respective interests in Aireon into a new holding company, Aireon Holdings LLC, and entered into an Amended and Restated Aireon Holdings LLC Agreement. Aireon Holdings LLC holds 100% of the membership interests in Aireon LLC, which remains the operating entity. At each of March 31, 2021 and December 31, 2020, the Company's fully diluted ownership stake in Aireon Holdings LLC was approximately 35.7%, subject to certain redemption provisions contained in the Amended and Restated Limited Liability Company Agreement. In addition, pursuant to a debt facility for Aireon LLC provided by the Company and the other Aireon investors, the Company will participate pro-rata, based on its fully diluted ownership stake, in an investor bridge loan. As such, in December 2020, the Company invested $0.2 million in the Aireon LLC debt facility. The Company expects future funding by it and the other Aireon investors to be required in 2021 and 2022. The Company’s maximum commitment under the investor bridge loan is $10.7 million.



You should read the following discussion along with our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed on February 11, 2021 with the Securities and Exchange Commission, or the SEC, as well as our condensed consolidated financial statements included in this Form 10-Q.

This report contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. For this purpose, any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. Such forward-looking statements include those that express plans, anticipation, intent, contingencies, goals, targets or future development or otherwise are not statements of historical fact. Without limiting the foregoing, the words “believe,” “anticipate,” “plan,” “expect,” “intend” and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based on our current expectations and projections about future events, and they are subject to risks and uncertainties, known and unknown, that could cause actual results and developments to differ materially from those expressed or implied in such statements. These risks and uncertainties may be amplified by the COVID-19 pandemic and its potential impact on our business and the global economy. The important factors described under the caption “Risk Factors” in this report and in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020 filed on February 11, 2021 could cause actual results to differ materially from those indicated by forward-looking statements made herein. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Overview of Our Business
We are engaged primarily in providing mobile voice and data communications services using a constellation of orbiting satellites. We are the only commercial provider of communications services offering true global coverage, connecting people, organizations and assets to and from anywhere, in real time. Our unique L-band satellite network provides reliable communications services to regions of the world where terrestrial wireless or wireline networks do not exist or are limited, including remote land areas, open ocean, airways, the polar regions and regions where the telecommunications infrastructure has been affected by political conflicts or natural disasters.
We provide voice and data communications services to businesses, the U.S. and foreign governments, non-governmental organizations and consumers via our upgraded satellite network, which has an architecture of 66 operational satellites with in-orbit and ground spares and related ground infrastructure. We utilize an interlinked mesh architecture to route traffic across the satellite constellation using radio frequency crosslinks between satellites. This unique architecture minimizes the need for ground facilities to support the constellation, which facilitates the global reach of our services and allows us to offer services in countries and regions where we have no physical presence. Our upgraded satellite constellation is compatible with all of our end-user equipment and supports more bandwidth and higher data speeds for our new products, including our recently introduced Iridium Certus broadband service.
We sell our products and services to commercial end-users through a wholesale distribution network, encompassing approximately 125 service providers, approximately 285 value-added resellers, or VARs, and approximately 85 value-added manufacturers, or VAMs, who either sell directly to the end user or indirectly through other service providers, VARs or dealers. These distributors often integrate our products and services with other complementary hardware and software and have developed a broad suite of applications for our products and services targeting specific lines of business.
At March 31, 2021, we had approximately 1,518,000 billable subscribers worldwide, representing an increase of 14% from approximately 1,332,000 billable subscribers at March 31, 2020. We have a diverse customer base, with end users in the following lines of business: land mobile, maritime, aviation, Internet of Things, or IoT, hosted payloads and other data services and the U.S. government.
We recognize revenue from both the provision of services and the sale of equipment. Over the past several years, service revenue, including revenue from hosting and data services, has represented an increasing proportion of our revenue, and we expect that trend to continue.

Effects of the COVID-19 Pandemic on Our Business
The COVID-19 pandemic and measures taken in response are currently affecting countries, communities and markets around the world. Like many other businesses, we started to see a slowdown in the final weeks of March 2020 as a result of this widespread economic shutdown. Our distributors have also experienced business and operational restrictions, which continue to limit their ability to visit customers, complete new installations, and close on new business opportunities. This slowdown extended throughout 2020 and during the first quarter of 2021, though we have seen significant recovery in some markets, most notably IoT. Other markets, including aviation and maritime, continue to suffer significant effects from reduced activity during the pandemic. Aviation, in particular, may take years to recover to pre-pandemic levels. In other industries, such as maritime, the effects are significant, but vary greatly by region and business model, and we expect that additional shutdowns will continue

to impact our results of operations. The ultimate effects of the COVID-19 pandemic are difficult to assess or predict with certainty at this time but may include additional risks. For further information on the potential effects of the COVID-19 pandemic on our business, financial condition and results of operations, see “Part I, Item 1A. Risk Factors” of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed with the Securities and Exchange Commission on February 11, 2021.

Material Trends and Uncertainties
Our industry and customer base has historically grown as a result of:
demand for remote and reliable mobile communications services;
a growing number of new products and services and related applications;
a broad wholesale distribution network with access to diverse and geographically dispersed niche markets;
increased demand for communications services by disaster and relief agencies, and emergency first responders;
improved data transmission speeds for mobile satellite service offerings;
regulatory mandates requiring the use of mobile satellite services;
a general reduction in prices of mobile satellite services and subscriber equipment; and
geographic market expansion through the ability to offer our services in additional countries.
Nonetheless, we face a number of challenges and uncertainties in operating our business, including:
our ability to maintain the health, capacity, control and level of service of our satellites;
our ability to develop and launch new and innovative products and services;
changes in general economic, business and industry conditions, including the effects of currency exchange rates;
our reliance on a single primary commercial gateway and a primary satellite network operations center;
competition from other mobile satellite service providers and, to a lesser extent, from the expansion of terrestrial-based cellular phone systems and related pricing pressures;
market acceptance of our products;
regulatory requirements in existing and new geographic markets;
rapid and significant technological changes in the telecommunications industry;
our ability to generate sufficient internal cash flows to repay our debt;
reliance on our wholesale distribution network to market and sell our products, services and applications effectively;
reliance on single-source suppliers for the manufacture of most of our subscriber equipment and for some of the components required in the manufacture of our end-user subscriber equipment and our ability to purchase parts that are periodically subject to shortages resulting from surges in demand, natural disasters or other events; and
reliance on a few significant customers, particularly agencies of the U.S. government, for a substantial portion of our revenue, as a result of which the loss or decline in business with any of these customers may negatively impact our revenue and collectability of related accounts receivable.


Comparison of Our Results of Operations for the Three Months Ended March 31, 2021 and 2020
Three Months Ended March 31,Change
2021% of Total Revenue2020% of Total Revenue
($ in thousands)DollarsPercent
Services$116,152 80 %$115,975 80 %$177 — %
Subscriber equipment23,953 16 %22,263 15 %1,690 %
Engineering and support services6,430 %7,049 %(619)(9)%
Total revenue146,535 100 %145,287 100 %1,248 %
Operating expenses:
Cost of services (exclusive of depreciation
and amortization)23,207 16 %21,978 15 %1,229 %
Cost of subscriber equipment13,028 %12,274 %754 %
Research and development2,717 %2,444 %273 11 %
Selling, general and administrative22,657 15 %20,825 14 %1,832 %
Depreciation and amortization75,910 52 %75,944 52 %(34)— %
Total operating expenses137,519 94 %133,465 92 %4,054 %
Operating income9,016 %11,822 %(2,806)(24)%
Other expense:
Interest expense, net(22,769)(16)%(26,444)(18)%3,675 (14)%
Loss on extinguishment of debt— — %(30,209)(21)%30,209 (100)%
Other income (expense), net(28)— %447 — %(475)(106)%
Total other expense, net(22,797)(16)%(56,206)(39)%33,409 (59)%
Loss before income taxes(13,781)(10)%(44,384)(31)%30,603 (69)%
Income tax benefit8,598 %12,682 %(4,084)(32)%
Net loss$(5,183)(4)%$(31,702)(22)%$26,519 (84)%


Commercial Service Revenue 
Three Months Ended March 31,
Subscribers (1)
ARPU (2)
Subscribers (1)
ARPU (2)
(Revenue in millions and subscribers in thousands)
Commercial services:
Voice and data$41.4 350 $39 $42.2 351 $40 $(0.8)(1)$(1)
IoT data 24.8 1,003 $8.39 23.8 830 $9.71 1.0 173 (1.32)
Broadband (3)
9.4 12.0 $265 8.7 10.9 $267 0.7 1.1 (2)
Hosted payload and other data14.8 N/A16.3 N/A(1.5)N/A
Total commercial services$90.4 1,365 $91.0 1,192$(0.6)173 
(1)Billable subscriber numbers shown are at the end of the respective period.
(2)Average monthly revenue per unit, or ARPU, is calculated by dividing revenue in the respective period by the average of the number of billable subscribers at the beginning of the period and the number of billable subscribers at the end of the period and then dividing the result by the number of months in the period. Billable subscriber and ARPU data is not applicable for hosted payload and other data service revenue items.
(3)Commercial broadband service consists of Iridium OpenPort® and Iridium Certus® broadband services.
For the three months ended March 31, 2021, total commercial services revenue decreased $0.6 million, or 1%, from the prior year period primarily as a result of decreases in hosted payload and voice and data revenue. These decreases were partially offset by increases in IoT data revenue and broadband revenue. Hosted payload and other service revenue decreased $1.5 million, or 9%, for the three months ended March 31, 2021, due primarily to a data billing settlement that resulted in recognition of $1.3 million in the prior year quarter. Voice and data revenue decreased $0.8 million, or 2%, for the three months ended March 31, 2021. This decrease resulted from a decrease in usage and access fees as we continue to recover from the mobility restrictions associated with the COVID-19 pandemic. These decreases were offset by an increase in commercial IoT data revenue of $1.0 million, or 4%, for the three months ended March 31, 2021, due to a 21% increase in commercial IoT data billable subscribers, primarily from continued strength in consumer personal communications devices. The increase in IoT related to subscriber growth was offset in part by a decrease in ARPU, driven by lower usage associated with the COVID-19 pandemic primarily in aviation. Commercial services revenue also increased due to an increase in commercial broadband revenue of $0.7 million, or 8%, for the three months ended March 31, 2021, due primarily to an increase in broadband billable subscribers.
Government Service Revenue 
 Three Months Ended March 31,  
Subscribers (1)
Subscribers (1)
(Revenue in millions and subscribers in thousands)
Government services$25.8 153$25.0 140$0.8 13 
(1)Billable subscriber numbers shown are at the end of the respective period.

We provide airtime and airtime support to U.S. government and other authorized customers pursuant to our Enhanced Mobile Satellite Services contract, or the EMSS Contract. Under the terms of this agreement, which we entered into in September 2019, authorized customers utilize specified Iridium airtime services provided through the U.S. government’s dedicated gateway. The fee is not based on subscribers or usage, allowing an unlimited number of users access to these services. The annual rate under the EMSS Contract increased from $100.0 million to $103.0 million during the third quarter of 2020.


Subscriber Equipment Revenue
Subscriber equipment revenue increased by $1.7 million, or 8%, for the three months ended March 31, 2021 compared to the prior year period, primarily due to an increase in the volume of IoT, partially offset by a decrease in the volume of handset and L-band transceiver device sales.
Engineering and Support Service Revenue
 Three Months Ended March 31,