Background



We were initially formed in 2007 as GHL Acquisition Corp., a special purpose
acquisition company. In 2009, we acquired all the outstanding equity in Iridium
Holdings LLC and changed our name to Iridium Communications Inc.

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, 285
value-added resellers, or VARs, and 90 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 December 31, 2020 we had approximately 1,476,000 billable subscribers
worldwide, an increase of 176,000, or 14%, from approximately 1,300,000 billable
subscribers at December 31, 2019. We have a diverse customer base, including end
users in land-mobile, Internet of Things, or IoT, maritime, aviation and
government.

We recognize revenue from both the provision of services and the sale of
equipment. Service revenue represented 79% and 80% of total revenue for the
years ended December 31, 2020 and 2019, respectively. Voice and data and IoT
data service revenues have historically generated higher margins than subscriber
equipment revenue, and we expect this trend to continue. We also recognize
revenue from our hosted payloads, principally Aireon, including fees for hosting
the payloads and fees for transmitting data from the payloads over our network,
as well as revenue from other services, such as satellite time and location
services.

Services Agreements for Upgrade of Satellite Constellation

In 2019, we completed the full replacement of our first-generation satellites with our upgraded constellation at a cost of approximately $3 billion.



In June 2010, we executed a primarily fixed price full scale development
contract, or FSD, with Thales Alenia Space for the design and manufacture of
satellites for the upgraded constellation. The total price under the FSD was
$2.3 billion. Final payments under this contract were made during the second
quarter of 2019. These costs were capitalized as construction in progress within
property and equipment, net in the accompanying condensed consolidated balance
sheets.

To complete the upgraded constellation, we launched a total of 75 satellites
into low earth orbit using eight Falcon 9 rockets under two contracts with Space
Exploration Technologies Corp., or SpaceX, with a total price of $510.8 million.
Final payments to SpaceX for these launches were made during the second quarter
of 2019. These costs were capitalized as construction in progress within
property and equipment, net in the accompanying consolidated balance sheets. We
shared one launch with GFZ German Research Centre for Geosciences for which we
received $29.8 million from them.

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Term Loan



On November 4, 2019, pursuant to a new loan agreement, or the Credit Agreement,
we entered into a $1,450.0 million term loan, or the Term Loan, and an
accompanying $100.0 million revolving loan, or the Revolving Facility. We used
the proceeds of the Term Loan along with our debt service reserve account, or
DSRA, and cash on hand to repay in full all of the indebtedness outstanding
under the credit facility with a syndicate of bank lenders guaranteed by
Bpifrance Assurance Export S.A.S., or the BPIAE Facility, as well as related
expenses. The Term Loan was issued at a price equal to 99.5% of its face value
and initially bore interest at an annual rate of LIBOR plus 3.75%, with a
1.0% LIBOR floor, and has a seven-year maturity.

On February 7, 2020, we closed on an additional $200.0 million under the Term
Loan. On February 13, 2020, we used these proceeds, together with cash on hand,
to prepay and retire all of the indebtedness outstanding under our senior
unsecured notes, or 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, we paid a call price equal to the
present value at the redemption date 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.

In January 2021, we repriced the Term Loan in order to reduce the annual
interest rate to LIBOR plus 2.75%, with a 1.0% LIBOR floor, with no other
material changes to the terms. The Revolving Facility bears interest at LIBOR
plus 3.75% (but without a LIBOR floor) if and as drawn, with no original issue
discount, a commitment fee of 0.5% per year on the undrawn amount, and a
five-year maturity. See   Note 7   for further discussion of our Term Loan.

The Credit Agreement, as amended to date, restricts our 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
mechanism to sweep a portion of our 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, or 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 excess cash flow sweep, based on achievement and maintenance of specified
leverage ratios. The Credit Agreement permits repayment, prepayment, and
repricing transactions, subject to a 1% penalty in the event the facility is
prepaid or repriced within six months after the repricing action noted above.

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 maintenance of 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 also contains
other customary representations and warranties, affirmative and negative
covenants, and events of default.

Derivative Financial Instruments



On November 27, 2019, we executed a long-term interest rate swap, or the Swap,
effective through November 2021 to mitigate variability in forecasted interest
payments on a portion of our borrowings under our Term Loan. We receive variable
interest payments based on one-month LIBOR from the counterparty. We also
entered into an interest rate swaption agreement, or the Swaption, that, if
executed on November 22, 2021, would extend our Swap through November 2026. We
pay 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 carry a notional
amount of $1,000.0 million. We designated both the Swap and Swaption as
qualifying hedging instruments and accounted for these derivatives as cash flow
hedges. Gains and losses resulting from fair value adjustments to the Swap and
Swaption are recorded within accumulated other comprehensive loss within our
consolidated balance sheets and reclassified to interest expense on the dates
that interest payments become due. Cash flows related to the interest rate swaps
are included in cash flows from operating activities on the consolidated
statements of cash flows. See   Note 8   to our consolidated financial
statements included in this report for further discussion of our derivative
financial instruments.

Senior Unsecured Notes



On March 21, 2018, we issued $360.0 million in aggregate principal under the
Notes, before $9.0 million of deferred financing costs, for a net principal
balance of $351.0 million in borrowings from the Notes. The Notes bore interest
at 10.25% per annum and were due to mature on April 15, 2023. Interest was
payable semi-annually on April 15 and October 15, beginning on October 15, 2018,
and principal would have been repaid in full upon maturity. As noted above, the
notes were redeemed on February 13, 2020.
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Total Interest on Debt and Loss on Extinguishment



Total interest incurred during the years ended December 31, 2020, 2019 and 2018
was $98.6 million, $140.1 million and $142.7 million, respectively. Interest
incurred includes amortization of deferred financing fees of $3.8 million, $21.6
million and $26.5 million, for the years ended December 31, 2020, 2019 and 2018,
respectively. Interest capitalized during the year ended December 31, 2020 and
2019 was $3.2 million and $15.1 million, respectively. Interest accrued for the
years ended December 31, 2020 and 2019 was $0.2 million and $7.8 million,
respectively. As part of the repayment of the BPIAE Facility in November 2019,
noted above, we incurred a loss of approximately $111.7 million for the early
extinguishment which was recorded within other income (expense) on our
consolidated statements of operations and comprehensive loss. Similarly, in
February 2020, we incurred a loss of approximately $30.2 million for the early
extinguishment of the Notes, also recorded within other income (expense) on our
consolidated statements of operations and comprehensive loss.

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.

Critical Accounting Policies and Estimates



The discussion and analysis of our financial condition and results of operations
is based upon our consolidated financial statements, which have been prepared in
accordance with accounting principles generally accepted in the United States,
or U.S. GAAP. The preparation of these financial statements requires the use of
estimates and judgments that affect the reported amounts of assets, liabilities,
revenue and expenses, and related disclosure of contingent assets and
liabilities. On an ongoing
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basis, we evaluate our estimates, including those related to revenue
recognition, income taxes, useful lives of property and equipment, loss
contingencies, and other estimates. We base our estimates on historical
experience and on various other assumptions that we believe to be reasonable
under the circumstances. Actual results may differ from these estimates under
different assumptions or conditions.

The accounting policies we believe to be most critical to understanding our
financial results and condition and that require complex and subjective
management judgments are discussed below. Our accounting policies are more fully
described in   Note 2   in Item 8 "Financial Statements and Supplementary Data"
included in this report. Please see the notes to our consolidated financial
statements for a full discussion of these significant accounting policies.

Revenue Recognition



We sell services and equipment through contracts with our customers. We evaluate
whether a contract exists as it relates to collectibility of the contract. Once
a contract is deemed to exist, we evaluate the transaction price including both
fixed and variable consideration. The variable consideration contained within
our contracts with customers may include discounts, credits and other similar
items. When a contract includes variable consideration, we evaluate the estimate
of the variable consideration to determine whether the estimate needs to be
constrained. Therefore, we include constrained consideration in the transaction
price only to the extent that it is probable that a significant reversal of the
amount of cumulative revenue recognized will not occur when the uncertainty
associated with the variable consideration or collectibility is subsequently
resolved. Variable consideration estimates are updated at the end of each
quarter and collectibility assessments are evaluated with new customers, or on
an ongoing basis if initially deemed not probable, and updated as facts and
circumstances change.

We sell prepaid services in the form of e-vouchers and prepaid cards. A
liability is established equal to the cash paid upon purchase for the e-voucher
or prepaid card. We recognize revenue from (i) the prepaid services upon the use
of the e-voucher or prepaid card by the customer and (ii) the estimated pattern
of use. While the terms of prepaid e-vouchers can be extended by the purchase of
additional e-vouchers, prepaid e-vouchers may not be extended beyond three or
four years, dependent on the initial term when purchased.

Revenue associated with some of our fixed-price engineering services
arrangements is recognized over time using costs incurred to date relative to
total estimated costs at completion to measure progress toward satisfying our
performance obligation. We recognize revenue on cost-plus-fixed-fee arrangements
to the extent of estimated costs incurred plus the applicable fees earned. If
actual results are not consistent with our estimates or assumptions, we may be
exposed to changes to earned and unearned revenue that could be material to our
results of operations.

Income Taxes

We account for income taxes using the asset and liability approach. This
approach requires that we recognize deferred tax assets and liabilities based on
differences between the financial statement bases and tax bases of our assets
and liabilities. Deferred tax assets and liabilities are recorded based upon
enacted tax rates for the period in which the deferred tax items are expected to
reverse. Changes in tax laws or tax rates in various jurisdictions are reflected
in the period of change. Significant judgment is required in the calculation of
our tax provision and the resulting tax liabilities as well as our ability to
realize our deferred tax assets. Our estimates of future taxable income and any
changes to such estimates can significantly impact our tax provision in a given
period. Significant judgment is required in determining our ability to realize
our deferred tax assets related to federal, state and foreign tax attributes
within their carryforward periods including estimating the amount and timing of
the future reversal of deferred tax items in our projections of future taxable
income. A valuation allowance is established to reduce deferred tax assets to
the amounts we expect to realize in the future. We also recognize tax benefits
related to uncertain tax positions only when we estimate that it is "more likely
than not" that the position will be sustainable based on its technical merits.
If actual results are not consistent with our estimates and assumptions, this
may result in material changes to our income tax provision.

The Tax Cuts and Jobs Act of 2017, enacted in December of 2017, or the Tax Act,
introduced significant changes to U.S. income tax law that have a meaningful
impact on our provision for income taxes. Due to the complexity involved in
applying the provisions of the Tax Act, we made reasonable estimates of the
effects and recorded these estimates in our financial statements. Accounting for
the income tax effects of the Tax Act requires significant judgments and
estimates in the interpretation and calculations of the various provisions.
During 2019 and 2020, the U.S. Treasury Department, as well as the Internal
Revenue Service, or IRS, and other standard-setting bodies issued guidance
related to certain provisions in the Tax Act. These same standard-setting bodies
may issue additional guidance on how the provisions of the Tax Act will be
applied or otherwise administered that is different from our interpretation. As
we collect and prepare necessary data, interpret the Tax Act
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and analyze any additional guidance issued by the IRS or other standard-setting bodies, we may need to make adjustments to prior estimates, which could materially impact our financial statements in the period in which the adjustments are made.

Property and Equipment



Property and equipment are stated at cost, less accumulated depreciation and
amortization. Property and equipment are depreciated or amortized over their
estimated useful lives. We apply judgment in determining the useful lives based
on factors such as engineering data, our long-term strategy for using the
assets, the manufacturer's estimated design life for the assets, laws and
regulations that could impact the useful lives of the assets and other economic
factors. In evaluating the useful lives of our satellites, we assess the current
estimated operational life of the satellites, including the potential impact of
environmental factors on the satellites, ongoing operational enhancements and
software upgrades. Additionally, we review engineering data relating to the
operation and performance of our satellite network.

We depreciate our satellites over the shorter of their potential operational
life or the period of their expected use. The appropriateness of the useful
lives is evaluated on a quarterly basis or as events occur that require
additional assessment. The upgraded satellites that have been placed into
service are depreciated using the straight-line method over their respective
estimated useful lives. If the estimated useful lives of our upgraded satellites
change, it could have a material impact on the timing of the recognition of
depreciation expense.

During the construction period for our upgraded satellite constellation, assets
under construction primarily consisted of costs incurred associated with the
design, development and launch of the upgraded satellites, upgrades to our
current infrastructure and ground systems and internal software development
costs. We capitalized a portion of the interest on the BPIAE Facility during the
construction period of the upgraded satellite constellation. Capitalized
interest was added to the cost of the upgraded satellites. Once these assets
were placed in service, they are depreciated using the straight-line method over
their respective estimated useful lives. During each year end, we evaluate the
useful lives of all assets under construction.

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Comparison of Our Results of Operations for the Year Ended December 31, 2020 and the Year Ended December 31, 2019


                                                                   Year Ended December 31,
                                                              % of Total                                  % of Total                        Change
($ In thousands)                           2020                 Revenue                2019                 Revenue              Dollars             Percent
Revenue:
Service revenue
Commercial                            $   362,208                      62  %       $  350,026                      63  %       $  12,182                    3  %
Government                                100,887                      17  %           97,132                      17  %           3,755                    4  %
Total service revenue                     463,095                      79  %          447,158                      80  %          15,937                    4  %
Subscriber equipment                       86,119                      15  %           82,856                      15  %           3,263                    4  %
Engineering and support services           34,225                       6  %           30,430                       5  %           3,795                   12  %
Total revenue                             583,439                     100  %          560,444                     100  %          22,995                    4  %
Operating expenses:
Cost of services (exclusive of
depreciation
and amortization)                          91,097                      16  %           94,958                      17  %          (3,861)                  (4) %
Cost of subscriber equipment               51,596                       9  %           50,186                       9  %           1,410                    3  %
Research and development                   12,037                       2  %           14,310                       2  %          (2,273)                 (16) %
Selling, general and administrative        90,052                      15  %           93,165                      17  %          (3,113)                  (3) %
Depreciation and amortization             303,174                      52  %          297,705                      53  %           5,469                    2  %
Total operating expenses                  547,956                      94  %          550,324                      98  %          (2,368)                   0  %

Operating income                           35,483                       6  %           10,120                       2  %          25,363                  251  %
Other income (expense):
Interest expense, net                     (94,271)                    (16) %         (115,396)                    (21) %          21,125                  (18) %
Loss on extinguishment of debt            (30,209)                     (5) %         (111,710)                    (20) %          81,501                  (73) %
Other income (expense), net                    33                       0  %           (1,133)                      0  %           1,166                 (103) %
Total other expense                      (124,447)                    (21) %         (228,239)                    (41) %         103,792                  (45) %
Loss before income taxes                  (88,964)                    (15) %         (218,119)                    (39) %         129,155                  (59) %
Income tax benefit                         32,910                       5  %           56,120                      10  %         (23,210)                 (41) %
Net loss                              $   (56,054)                    (10) %       $ (161,999)                    (29) %       $ 105,945                  (65) %


Commercial Service Revenue

Year Ended December 31,


                                                     2020                                                          2019                                                      Change
                                                  Billable                                                      Billable                                                    Billable
                             Revenue           Subscribers (1)           ARPU (2)          Revenue           Subscribers (1)          ARPU (2)          Revenue           Subscribers             ARPU
                                                                                         (Revenue in millions and subscribers in thousands)

Commercial services:
Voice and data              $ 168.6                   350              $      40          $ 173.1                   352              $     41          $  (4.5)                 (2)            $    (1)
IoT data                       97.0                   962              $    9.16             96.4                   802              $  11.10              0.6                 160             $ (1.94)
Broadband (3)                  36.0                  11.7              $     266             30.5                  10.8              $    248              5.5                 0.9             $    18
Hosted payload and other
data                           60.6                          N/A                             50.0                          N/A                            10.6                       N/A
Total commercial services   $ 362.2                 1,324                                 $ 350.0                 1,165                                $  12.2                 159



(1)Billable subscriber numbers are shown as of 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
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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 consists of Iridium OpenPort and Iridium Certus
broadband services, which were previously reported in commercial voice and data
revenue. Prior year periods have been conformed to this presentation.

For the year ended December 31, 2020, total commercial revenue increased $12.2
million, or 3%, due to increased hosted payload and other data services revenue
and increased commercial broadband revenue. Hosted payload and other data
service revenue increased $10.6 million, or 21%, primarily due to increased
Aireon data service fees related to a contractual step-up and increased Aireon
power fees. Commercial broadband revenue increased $5.5 million, or 18%, from
the prior year period, principally due to sales of Iridium Certus broadband
services, which were commercially introduced in January 2019. Commercial IoT
data revenue also increased slightly, up $0.6 million, or 1%, over the prior
year period. This primarily reflects a 20% increase in commercial IoT data
billable subscribers, primarily from continued strength in consumer personal
communications devices, offset in part by a decrease in ARPU, driven by the
decrease in usage revenue related to COVID-19, particularly with aviation
customers, and an increase in the proportion of consumer personal communications
device users comprising IoT subscribers, as users of these devices typically
utilize lower ARPU plans. The increases in revenue were partially offset by a
$4.5 million, or 3%, decline in commercial voice and data revenue from the prior
year resulting from a decrease in subscribers and decreased usage following
mobility restrictions associated with the COVID-19 pandemic.

Government Service Revenue
                                                              Year Ended December 31,
                                                  2020                                          2019                                       Change
                                                           Billable                                    Billable                                    Billable
                                   Revenue              Subscribers (1)           Revenue           Subscribers (1)           Revenue             Subscribers
                                                                     

(Revenue in millions and subscribers in thousands)



Government service revenue     $       100.9                   152              $   97.1                   135              $     3.8                   17


(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, 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 the services. For the year ended
December 31, 2020, government service revenue increased $3.8 million from the
prior year period as a result of the higher pricing in the new EMSS Contract.

Subscriber Equipment Revenue



Subscriber equipment revenue increased $3.3 million, or 4%, to $86.1 million for
the year ended December 31, 2020 compared to the prior year, primarily due to an
increase in the volume and higher average selling price of L-band transceivers
and an increase in volume of IoT device sales, partially offset by a decrease in
the volume of handset sales.

Engineering and Support Service Revenue



                    Year Ended December 31,
                       2020                 2019       Change
                               (In millions)

Commercial   $        4.5                 $  2.8      $  1.7
Government           29.7                   27.6         2.1
Total        $       34.2                 $ 30.4      $  3.8



Engineering and support service revenue increased by $3.8 million, or 12%, for
the year ended December 31, 2020 compared to the prior year primarily as a
result of an increase in the volume of contracted work to enable services for
the U.S. government and an increase in the volume of work for commercial
customers, primarily related to the Aireon hosted payload operations center.

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Operating Expenses

Cost of Services (exclusive of depreciation and amortization)



Cost of services (exclusive of depreciation and amortization) includes the cost
of network engineering and operations staff, including contractors, software
maintenance, product support services, and cost of services for government and
commercial engineering and support service revenue.

Cost of services (exclusive of depreciation and amortization) decreased by $3.9
million, or 4%, for the year ended December 31, 2020 compared to the prior year,
primarily as a result of a decrease in in-orbit insurance costs, which were
amortized over a one-year period from the in-service date, as we completed the
placement of upgraded satellites in-orbit in February 2019. This decrease was
offset in part by higher costs to support the new EMSS Contract and an increase
in the volume of contracted engineering and support services, as noted above.

Cost of Subscriber Equipment

Cost of subscriber equipment includes the direct costs of equipment sold, which consist of manufacturing costs, allocation of overhead, and warranty costs.



Cost of subscriber equipment increased $1.4 million, or 3%, for the year
ended December 31, 2020 compared to the prior year period primarily due to the
increase in the volume of L-band transceivers and IoT device sales, as described
above.

Research and Development

Research and development expenses decreased by $2.3 million, or 16%, for the
year ended December 31, 2020 compared to the prior year period primarily due to
decreased spend on devices for our upgraded network.

Selling, General and Administrative



Selling, general and administrative expenses that are not directly attributable
to the sale of services or products include sales and marketing costs as well as
employee-related expenses (such as salaries, wages, and benefits), legal,
finance, information technology, facilities, billing and customer care expenses.

Selling, general and administrative expenses decreased by $3.1 million, or 3%,
for the year ended December 31, 2020 compared to the prior year, primarily due
to a decrease in management incentive compensation and decreased spend on travel
and marketing related events as a result of COVID-19. These decreases were
offset by an increase in wages and equity compensation associated with an
increase in headcount.
Depreciation and Amortization

Depreciation and amortization expense increased by $5.5 million, or 2%, for the
year ended December 31, 2020 compared to the prior year, primarily due to the
increased number of upgraded satellites in service during the current period as
we completed the replacement of our first-generation satellites in February
2019. As the upgraded satellites are the largest proportion of our asset base,
we anticipate depreciation and amortization to remain relatively consistent over
the next several years.

Other Income (Expense)

Interest Expense, net

Interest expense, net, for the year ended December 31, 2020 was $94.3 million,
compared to $115.4 million for the prior year period. The decrease was primarily
related to the impact of the refinancing of our debt including a decrease in the
weighted average effective interest rate and lower average outstanding
borrowings under our total debt obligations. The decrease was offset in part by
less interest being capitalized as the average balance of satellites in
construction decreased in 2020 as upgraded satellites were completed in the
prior year and less interest income.

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Loss on Extinguishment of Debt



Loss on extinguishment of debt was $30.2 million for the year ended December 31,
2020, compared to $111.7 million for the prior year period. During November
2019, we issued our Term Loan, and used the proceeds of the Term Loan, along
with our DSRA and cash on hand to repay in full all of the indebtedness
outstanding under the BPIAE Facility, including premiums for early prepayment.
During February 2020, we closed on an additional $200.0 million under our Term
Loan and used these proceeds, together with cash on hand, to prepay all of the
indebtedness outstanding under the Notes, including premiums for early
prepayment. In each case, we wrote off the remaining unamortized debt issuance
costs, resulting in the loss on extinguishment of debt.

Income Tax Benefit



For the year ended December 31, 2020, our income tax benefit was $32.9 million,
compared to an income tax benefit of $56.1 million for the prior year. Our
effective tax rate was approximately 37.0% for the year ended December 31, 2020
compared to 25.7% for the prior year. The decrease in income tax benefit was
primarily related to a decrease in loss before income taxes compared to the
prior year. If our current estimates change in future periods, the impact on the
deferred tax assets and liabilities may change correspondingly. See   Note
1    2   to our consolidated financial statements for more detail on the
individual items impacting our effective tax rate for the years.

Net Loss



Net loss was $56.1 million for the year ended December 31, 2020, compared to net
loss of $162.0 million during the prior year. This decrease in net loss was
primarily the result of the $81.5 million decrease in loss on extinguishment of
debt, the $23.0 million increase in total revenues, and the $21.1
million decrease in interest expense, net, as described above, partially offset
by the $23.2 million decrease in income tax benefit, as described above.


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Comparison of Our Results of Operations for the Year Ended December 31, 2019 and the Year Ended December 31, 2018


                                                                   Year Ended December 31,
                                                               % of Total                                 % of Total                         Change
($ In thousands)                           2019                  Revenue                2018                Revenue               Dollars             Percent
Revenue:
Service revenue
Commercial                            $    350,026                      63  %       $ 318,757                      61  %       $   31,269                   10  %
Government                                  97,132                      17  %          88,000                      17  %            9,132                   10  %
Total service revenue                      447,158                      80  %         406,757                      78  %           40,401                   10  %
Subscriber equipment                        82,856                      15  %          97,848                      19  %          (14,992)                 (15) %
Engineering and support services            30,430                       5  %          18,403                       3  %           12,027                   65  %
Total revenue                              560,444                     100  %         523,008                     100  %           37,436                    7  %
Operating expenses:
Cost of services (exclusive of
depreciation
and amortization)                           94,958                      17  %          86,016                      16  %            8,942                   10  %
Cost of subscriber equipment                50,186                       9  %          56,857                      11  %           (6,671)                 (12) %
Research and development                    14,310                       2  %          22,429                       4  %           (8,119)                 (36) %
Selling, general and administrative         93,165                      17  %          97,846                      19  %           (4,681)                  (5) %
Depreciation and amortization              297,705                      53  %         218,207                      42  %           79,498                   36  %
Total operating expenses                   550,324                      98  %         481,355                      92  %           68,969                   14  %
Operating income                            10,120                       2  %          41,653                       8  %          (31,533)                 (76) %
Other income (expense):
Interest expense, net                     (115,396)                    (21) %         (55,149)                    (11) %          (60,247)                 109  %
Loss on extinguishment of debt            (111,710)                    (20) %          (7,292)                     (1) %         (104,418)               1,432  %
Other income (expense), net                 (1,133)                      0  %             139                       0  %           (1,272)                (915) %
Total other expense                       (228,239)                    (41) %         (62,302)                    (12) %         (165,937)                 266  %
Loss before income taxes                  (218,119)                    (39) %         (20,649)                     (4) %         (197,470)                 956  %
Income tax benefit                          56,120                      10  %           7,265                       1  %           48,855                  672  %
Net loss                              $   (161,999)                    (29) %       $ (13,384)                     (3) %       $ (148,615)               1,110  %



Commercial Service Revenue
                                                                          Year Ended December 31,
                                                     2019                                                         2018                                                      Change
                                                  Billable                                                     Billable                                                    Billable
                             Revenue           Subscribers (1)          ARPU (2)          Revenue           Subscribers (1)          ARPU (2)          Revenue           Subscribers             ARPU
                                                                                         (Revenue in millions and subscribers in thousands)
Commercial services:
Voice and data              $ 203.6                   363              $     47          $ 193.2                   361              $     45          $  10.4                   2             $     2
IoT data                       96.4                   802              $  11.10             85.1                   647              $  12.26             11.3                 155             $ (1.16)

Hosted payload and other
data                           50.0                          N/A                            40.4                          N/A                             9.6                       N/A
Total Commercial            $ 350.0                 1,165                                $ 318.7                 1,008                                $  31.3                 157



(1)Billable subscriber numbers are shown as of 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.

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For the year ended December 31, 2019, total commercial revenue increased $31.3
million, or 10%, due to increased revenue across all commercial services
compared to the prior period. Commercial IoT data revenue increased $11.3
million, or 13%, from the prior year period primarily due to a 24% increase in
commercial IoT data billable subscribers primarily from continued strength in
consumer personal communications devices. This higher volume of new personal
communication subscribers caused overall IoT ARPU to be lower. Commercial voice
and data revenue increased $10.4 million, or 5%, from the prior year period.
This increase was principally due to price increases in access and roaming fees
that were implemented during the second quarter of 2018. The increase in
commercial voice and data revenue was also due to increased broadband
subscribers. Hosted payload and other data service revenue increased $9.6
million, or 24%, primarily due to revenue recognition from hosting services and
increased data services due to an increase in the number of upgraded satellites
in service, both related to Aireon and L3Harris.
Government Service Revenue
                                                              Year Ended December 31,
                                                 2019                                          2018                                       Change
                                                          Billable                                    Billable                                    Billable
                                   Revenue             Subscribers (1)           Revenue           Subscribers (1)           Revenue             Subscribers
                                                                      (Revenue in millions and subscribers in thousands)
Government service revenue     $       97.1                   135              $   88.0                   113              $     9.1                   22


(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 EMSS Contract. Under the terms of this agreement,
authorized customers utilize certain 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 the services. Immediately
prior to entering into the EMSS Contract in September 2019, we were providing
airtime service at varying monthly rates to the U.S. government under
month-to-month extensions of our previous EMSS contract, following the
expiration of a six-month extension on April 21, 2019. For the year ended
December 31, 2019, government service revenue increased $9.1 million from the
prior year period as a result of the month-to-month extensions we agreed to with
the U.S. government while the EMSS Contract was being negotiated and the higher
monthly rate once the EMSS Contract was executed and became effective on
September 15, 2019.
Subscriber Equipment Revenue

Subscriber equipment revenue decreased $15.0 million, or 15%, to $82.9
million for the year ended December 31, 2019 compared to the prior year. This
decrease was primarily due to a decrease in volume of handset sales and Iridium
Pilot unit sales, partially offset by an increase in the volume of Short Burst
Data devices and Iridium Certus devices. Handset sales in 2018 were abnormally
strong.
Engineering and Support Service Revenue

                    Year Ended December 31,
                       2019                 2018       Change
                               (In millions)
Commercial   $        2.8                 $  0.7      $  2.1
Government           27.6                   17.7         9.9
Total        $       30.4                 $ 18.4      $ 12.0



Engineering and support service revenue increased by $12.0 million, or 65%, for
the year ended December 31, 2019 compared to the prior year primarily as a
result of an increase in the volume of contracted work to enable services for
the U.S. government.

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Operating Expenses
Cost of Services (exclusive of depreciation and amortization)
Cost of services (exclusive of depreciation and amortization) increased by $8.9
million, or 10%, for the year ended December 31, 2019 compared to the prior
year, primarily as a result of an increase in the volume of contracted
engineering and support services as noted above. This increase was also driven
by higher satellite operations support associated with a greater number of
upgraded satellites in service during the current period, corresponding with
higher levels of activity directed towards operating the completed system. These
increases were partially offset by a decrease in in-orbit insurance costs, which
are amortized over a one-year period from the launch date, as we have completed
the placement of new satellites in-orbit.
Cost of Subscriber Equipment

Cost of subscriber equipment decreased $6.7 million, or 12%, for the year ended
December 31, 2019 compared to the prior year period primarily due to the
decreased volume of handset and Iridium Pilot unit sales, partially offset by an
increase in the volume of Short Burst Data devices and Iridium Certus devices.

Research and Development



Research and development expenses decreased by $8.1 million, or 36%, for the
year ended December 31, 2019 compared to the prior year period primarily due to
decreased spend on devices for our upgraded network.

Selling, General and Administrative



Selling, general and administrative expenses that are not directly attributable
to the sale of services or products include sales and marketing costs as well as
employee-related expenses (such as salaries, wages, and benefits), legal,
finance, information technology, facilities, billing and customer care expenses.
Selling, general and administrative expenses decreased by $4.7 million, or 5%,
for the year ended December 31, 2019 compared to the prior year, primarily due
to a decrease in professional fees, including lower consulting and regulatory
fees, as well as a decrease in sales and marketing costs.

Depreciation and Amortization
Depreciation and amortization expense increased by $79.5 million, or 36%, for
the year ended December 31, 2019 compared to the prior year, primarily due to
the increased number of new satellites in service during the current period as
we completed the replacement of our first-generation satellites.

Other Income (Expense)

Interest Expense, net



Interest expense, net, for the year ended December 31, 2019 was $115.4 million,
compared to $55.1 million for the prior year period. The increase in interest
expense is primarily related to a decrease in interest being capitalized as the
average balance of satellites in construction decreased as upgraded satellites
were completed. In addition, during the years ended December 31, 2019 and 2018,
we incurred approximately $34.1 million and $26.3 million, respectively, in
interest on the Notes that were issued in March 2018, resulting in only nine
months of interest in 2018.

Loss on Extinguishment of Debt



During November 2019, we issued our Term Loan, and used the proceeds of the Term
Loan, along with the our DSRA and cash on hand to repay in full all of the
indebtedness outstanding under the BPIAE Facility, including premiums for early
prepayment. In conjunction with the prepayment of the BPIAE Facility, we wrote
off the remaining unamortized debt issuance costs. We also used proceeds
received from Aireon and our Notes to extinguish debt. These prepayments
resulted in a loss on extinguishment of debt of $111.7 million and $7.3 million
for the years ended December 31, 2019 and 2018, respectively. The 2018 amount
was previously included within interest expense.

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Income Tax Benefit



For the year ended December 31, 2019, our income tax benefit was $56.1 million,
compared to an income tax benefit of $7.3 million for the prior year. Our
effective tax rate was approximately 25.7% for the year ended December 31, 2019
compared to 35.4% for the prior year. The increase in income tax benefit was
primarily related to an increase in loss before income taxes compared to the
prior year, stock compensation, tax credits as well as nonrecurring adjustments
to our deferred tax assets and liabilities related to state law changes. If our
current estimates change in future periods, the impact on the deferred tax
assets and liabilities may change correspondingly. See   Note 1    2   to our
consolidated financial statements for more detail on the individual items
impacting our effective tax rate for the years.

Net Loss



Net loss was $162.0 million for the year ended December 31, 2019, compared to
net loss of $13.4 million during the prior year period. This increase in net
loss was primarily the result of the $104.4 million increase in loss on
extinguishment of debt, the $79.5 million increase in depreciation and
amortization expense and the $60.2 million increase in interest expense, net, as
described above, partially offset by the $37.4 million increase in total
revenues and the $48.9 million increase in income tax benefit, as described
above.

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Liquidity and Capital Resources



In November 2019, we issued our Term Loan totaling $1,450.0 million, with an
accompanying $100.0 million Revolving Facility. We used the proceeds of the Term
Loan, cash in our DSRA and cash on hand to repay in full all of the indebtedness
outstanding under the BPIAE Facility, including premiums for early prepayment.

In February 2020, we issued an additional $200.0 million under our Term Loan and
used the proceeds and approximately $183.5 million of cash on hand to repay in
full all of the indebtedness outstanding under our Notes, including premiums for
early repayment. These additional funds have all of the same terms as the
initial borrowing under the Term Loan and were issued at a premium of 1.0% to
face value.

On January 20, 2021, we repriced our Term Loan. The Term Loan now bears interest
at an annual rate of LIBOR plus 2.75%, with a 1.00% LIBOR floor. All other terms
remain the same. To reprice the Term Loan, we incurred additional financing
costs of $3.4 million.

As of December 31, 2020, we reported an aggregate balance of $1,637.6 million in
borrowings under the Term Loan in our consolidated balance sheet, net of $24.0
million of deferred financing costs for a net balance of $1,613.6 million
outstanding. We have not drawn on our Revolving Facility.

Our Term Loan contains no financial maintenance covenants. With respect to the
Revolving Facility, we are required to maintain a consolidated first lien net
leverage ratio 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 Credit Agreement contains a mandatory prepayment mechanism with respect to a
portion of our excess cash flow (as defined in the Credit Agreement). It
provides for specified exceptions, baskets measured as a percentage of trailing
twelve months of earnings before interest, taxes, depreciation and amortization,
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 Credit Agreement permits repayment, prepayment, and repricing transactions.
Our mandatory excess cash flow prepayment, as specified in the Credit Agreement,
was $12.6 million as of December 31, 2020. This amount will be paid in 2021 and
counts towards our required quarterly principal payments under the Term Loan. We
were in compliance with all other covenants under the Credit Agreement as of
December 31, 2020.

As of December 31, 2020, our total cash and cash equivalents balance was $237.2
million, our marketable securities balance was $7.5 million, and we had $100.0
million of borrowing availability under our Revolving Facility. Our principal
sources of liquidity are cash, cash equivalents, marketable securities and
internally generated cash flows. Our principal liquidity requirements over the
next twelve months are primarily principal and interest on the Term Loan and
share repurchases under the share repurchase program described in   Note 10 

.

We believe our liquidity sources will provide sufficient funds for us to meet our liquidity requirements for at least the next 12 months.

Cash Flows - Comparison of the Year Ended December 31, 2020 and the Year Ended December 31, 2019

The following table shows our consolidated cash flows:


                                                    Year Ended December 31,
Statement of Cash Flows                              2020              2019          Change
                                                                (in thousands)

Net cash provided by operating activities $ 249,767 $ 198,143 $ 51,624 Net cash used in investing activities

$     (46,470)     $ (127,819)     $  81,349
Net cash used in financing activities           $    (188,186)     $ (313,280)     $ 125,094



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Cash Flows from Operating Activities



Net cash provided by operating activities for the year ended December 31, 2020
increased $51.6 million from the prior year period. Net loss, as adjusted for
non-cash activities, improved by $36.6 million over the prior year, primarily
due to the $105.9 million increase in net income, partially offset by the
non-cash $81.5 million decrease in the loss on extinguishment of debt. Net cash
from operating activities also increased as a result of working capital changes
by approximately $15.0 million. This increase was primarily the result of timing
of accounts receivable collections, as well as lower purchases of inventory in
2020, compared to the prior year. In 2019, there was an increase in inventory
primarily associated with last-time purchases of manufacturers' discontinued
parts that did not recur in 2020. These improvements in cash were offset in part
by a decrease in interest payable compared to the prior year. In November 2019
and February 2020, we replaced our Credit Facility and Notes, respectively, with
the Term Loan, resulting in monthly interest payments and an increase in cash
used compared to previous semi-annual interest payments. As a result, there was
minimal interest payable in the 2020 working capital balance for the Term Loan.

Cash Flows from Investing Activities



Net cash used in investing activities for the year ended December 31, 2020
decreased $81.3 million from the prior year period primarily due to a decrease
in capital expenditures as we completed payments for the construction of our
upgraded constellation in 2019. We estimate our capital expenditures will
average approximately $40.0 million per year until 2029.

Cash Flows from Financing Activities



Net cash used in financing activities for the year ended December 31, 2020
decreased $125.1 million compared to the prior year period primarily due to
utilizing our cash to pay down debt. This resulted in principal payments and
related costs, net of borrowings of $196.4 million for 2020, compared to
$313.8 million for 2019. See   Note 7   to our consolidated financial statements
included in this report for further discussion of our indebtedness.

Cash Flows - Comparison of the Year Ended December 31, 2019 and the Year Ended
December 31, 2018
The following table shows our consolidated cash flows:
                                                               Year Ended December 31,
Statement of Cash Flows                                        2019                 2018               Change
                                                                              (in thousands)
Net cash provided by operating activities                $     198,143          $  263,709          $  (65,566)
Net cash used in investing activities                    $    (127,819)         $ (378,912)         $  251,093
Net cash (used in) provided by financing                 $    (313,280)         $  193,503          $ (506,783)
activities


Cash Flows from Operating Activities



Net cash provided by operating activities for the year ended December 31, 2019
decreased $65.6 million from the prior year period primarily due to a decrease
in working capital of approximately $65.5 million. This is primarily the result
of less interest from the Credit Facility being capitalized as the average
balance of satellites under construction decreased as satellites were launched
and placed into service, which would have been recorded as an investing activity
and is now recorded as an operating activity. Additionally, in November of 2019,
we refinanced our Credit Facility resulting in monthly interest payments
compared to previous semi-annual payments. As such, there is no interest payable
in the 2019 working capital balance for the new Term Loan.

Cash Flows from Investing Activities



Net cash used in investing activities for the year ended December 31, 2019
decreased $251.1 million from the prior year period primarily due to a decrease
in capital expenditures as we completed payments for the construction of our
upgraded constellation.

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Cash Flows from Financing Activities



Net cash used in financing activities was $313.3 million for the year ended
December 31, 2019, compared to net cash provided by financing activities of
$193.5 million for the year ended December 31, 2018. The increase in cash used
in financing activities is a direct result of our deleveraging of our
outstanding debt. In 2019, the combination of scheduled principal payments and
the refinancing resulted in net payments of $313.8 million. In 2018, the
issuance of the Notes and scheduled principal payments resulted in net
borrowings of $198.5 million. See   Note 7   to our condensed consolidated
financial statements included in this report for further discussion of our
indebtedness.

Off-Balance Sheet Arrangements



We do not currently have, nor have we had in the last three years, any
relationships with unconsolidated entities or financial partnerships, such as
entities referred to as structured finance or special purpose entities, which
would have been established for the purpose of facilitating off-balance sheet
arrangements or other contractually narrow or limited purposes.

Seasonality



Our results of operations have been subject to seasonal usage changes for
commercial customers, and our results will be affected by similar seasonality
going forward. March through October are typically the peak months for
commercial voice services revenue and related subscriber equipment sales. U.S.
government revenue and commercial IoT revenue have been less subject to seasonal
usage changes.

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