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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 FORM 10-Q
 (Mark One)
Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the quarterly period ended: June 30, 2022
or
Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the transition period from                      to                     
Commission File Number 1-01520
https://cdn.kscope.io/53ea96ff4ee51a095032e274bc0aeb0b-ajrd-20220630_g1.jpg
  Aerojet Rocketdyne Holdings, Inc.
(Exact name of registrant as specified in its charter)
Delaware 34-0244000
(State or other jurisdiction of incorporation or organization) (I.R.S. Employer
Identification No.)
222 N. Pacific Coast Highway
Suite 500
El Segundo
California 90245
(Address of principal executive offices) (Zip Code)
310-252-8100
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common stock, $0.10 par value AJRDNew York Stock Exchange
 Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒   No  ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).   Yes  ☒  No  ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.  
Large accelerated filerAccelerated filer
Non-accelerated filerSmaller reporting company
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).     Yes  ☐    No   
As of July 18, 2022, the Company had 80,437,515 outstanding common shares, including unvested common shares, $0.10 par value.



Aerojet Rocketdyne Holdings, Inc.
Quarterly Report on Form 10-Q
For the Quarterly Period Ended June 30, 2022
Table of Contents 
Item
Number
 Page
1Financial Statements
2Management’s Discussion and Analysis of Financial Condition and Results of Operations
3Quantitative and Qualitative Disclosures About Market Risk
4Controls and Procedures
1Legal Proceedings
1ARisk Factors
2Unregistered Sales of Equity Securities and Use of Proceeds
3Defaults Upon Senior Securities
4Mine Safety Disclosures
5Other Information
6Exhibits
Signatures



Part I — FINANCIAL INFORMATION
Item 1. Financial Statements
Aerojet Rocketdyne Holdings, Inc.
Condensed Consolidated Statements of Operations
(Unaudited) 
Three months ended June 30,Six months ended June 30,
 2022202120222021
 (In millions, except per share amounts)
Net sales$528.5 $556.9 $1,039.6 $1,053.0 
Operating costs and expenses:
Cost of sales (exclusive of items shown separately below)469.5 446.1 895.0 864.1 
Selling, general and administrative expense9.6 13.6 17.8 22.6 
Depreciation and amortization13.8 15.7 28.2 30.9 
Other expense, net
Legal matters   16.1  
Proxy costs and related litigation8.9  12.0  
Other(1.5)7.2 (0.4)15.3 
Total operating costs and expenses500.3 482.6 968.7 932.9 
Operating income28.2 74.3 70.9 120.1 
Non-operating:
Retirement benefits expense0.2 8.4 0.5 16.9 
Loss on debt 0.5  9.6 
Interest income and other (0.7)0.2 (1.3)
Interest expense 4.3 5.1 8.2 10.2 
Total non-operating expense, net4.5 13.3 8.9 35.4 
Income before income taxes23.7 61.0 62.0 84.7 
Income tax provision 7.3 16.0 17.8 21.6 
Net income $16.4 $45.0 $44.2 $63.1 
Earnings per share of common stock
Basic earnings per share
$0.20 $0.56 $0.55 $0.80 
Diluted
Diluted earnings per share
$0.20 $0.54 $0.53 $0.77 
Weighted average shares of common stock outstanding, basic80.3 79.7 80.2 78.5 
Weighted average shares of common stock outstanding, diluted 85.9 82.5 85.8 81.3 
Cash dividends paid per share$ $ $ $5.00 
See Notes to Unaudited Condensed Consolidated Financial Statements.
1


Aerojet Rocketdyne Holdings, Inc.
Condensed Consolidated Statements of Comprehensive Income
(Unaudited)
 
Three months ended June 30,Six months ended June 30,
 2022202120222021
 (In millions)
Net income $16.4 $45.0 $44.2 $63.1 
Other comprehensive income:
Amortization of net actuarial losses and prior service costs, net of income taxes of $1.7 million, $3.8 million, $3.5 million, and $7.6 million
5.2 11.5 10.4 23.0 
Comprehensive income $21.6 $56.5 $54.6 $86.1 
See Notes to Unaudited Condensed Consolidated Financial Statements.
2


Aerojet Rocketdyne Holdings, Inc.
Condensed Consolidated Balance Sheets
(Unaudited)
June 30,
2022
December 31, 2021
 (In millions, except per share amounts)
ASSETS
Current Assets
Cash and cash equivalents$560.3 $700.4 
Restricted cash3.0 3.0 
Marketable securities9.1 10.6 
Accounts receivable170.3 60.6 
Contract assets377.3 354.2 
Other current assets125.7 99.5 
Total Current Assets1,245.7 1,228.3 
Noncurrent Assets
Right-of-use assets46.3 52.6 
Property, plant and equipment, net411.0 421.1 
Recoverable environmental remediation costs217.7 226.2 
Deferred income taxes145.5 55.6 
Goodwill161.4 161.4 
Intangible assets31.5 34.9 
Other noncurrent assets207.1 243.3 
Total Noncurrent Assets1,220.5 1,195.1 
Total Assets$2,466.2 $2,423.4 
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities
Current portion of long-term debt$179.3 $166.7 
Accounts payable115.1 132.2 
Reserves for environmental remediation costs42.6 37.7 
Contract liabilities371.5 366.5 
Other current liabilities254.7 172.7 
Total Current Liabilities963.2 875.8 
Noncurrent Liabilities
Long-term debt276.7 294.6 
Reserves for environmental remediation costs248.9 258.7 
Pension benefits230.0 255.9 
Operating lease liabilities36.1 41.3 
Other noncurrent liabilities137.2 173.8 
Total Noncurrent Liabilities928.9 1,024.3 
Total Liabilities1,892.1 1,900.1 
Commitments and contingencies (Note 8)
Stockholders’ Equity
Preferred stock, par value of $1.00; 15.0 million shares authorized; none issued or outstanding
  
Common stock, par value of $0.10; 150.0 million shares authorized; 80.3 million shares outstanding as of June 30, 2022; 80.1 million shares outstanding as of December 31, 2021
8.0 8.0 
Other capital574.5 578.1 
Treasury stock at cost, 2.1 million shares as of June 30, 2022 and December 31, 2021
(64.4)(64.4)
Retained earnings146.6 102.6 
Accumulated other comprehensive loss, net of income taxes(90.6)(101.0)
Total Stockholders’ Equity574.1 523.3 
Total Liabilities and Stockholders’ Equity $2,466.2 $2,423.4 
See Notes to Unaudited Condensed Consolidated Financial Statements.
3


Aerojet Rocketdyne Holdings, Inc.
Condensed Consolidated Statements of Stockholders’ Equity
(Unaudited) 
Common Stock(Accumulated Deficit)Accumulated OtherTotal
SharesAmountOther
Capital
Treasury
Stock
Retained EarningsComprehensive
Loss
Stockholders'
Equity
 (In millions)
March 31, 202179.6 $8.0 $562.4 $(64.4)$(26.0)$(216.1)$263.9 
Net income— — — — 45.0 — 45.0 
Amortization of net actuarial losses and prior service costs, net of income taxes— — — — — 11.5 11.5 
Settlement of debt0.1 — — — — —  
Stock-based compensation and shares issued under equity plans0.1 — 5.6 — — — 5.6 
June 30, 202179.8 $8.0 $568.0 $(64.4)$19.0 $(204.6)$326.0 
December 31, 202076.8 $7.7 $562.1 $(64.4)$(57.4)$(227.6)$220.4 
Net income— — — — 63.1 — 63.1 
Amortization of net actuarial losses and prior service costs, net of income taxes— — — — — 23.0 23.0 
Adjustment to dividends— — — — 13.3 — 13.3 
Settlement of debt2.7 0.3 (4.1)— — — (3.8)
Repurchase of shares for withholding taxes and option costs under equity plans — — (4.0)— — — (4.0)
Stock-based compensation and shares issued under equity plans0.3 — 14.0 — — — 14.0 
June 30, 202179.8 $8.0 $568.0 $(64.4)$19.0 $(204.6)$326.0 
March 31, 202280.3 $8.0 $572.7 $(64.4)$129.4 $(95.8)$549.9 
Net income— — — — 16.4 — 16.4 
Amortization of net actuarial losses and prior service costs, net of income taxes— — — — — 5.2 5.2 
Adjustment to dividends— — — — 0.8 — 0.8 
Stock-based compensation and shares issued under equity plans— — 1.8 — — — 1.8 
June 30, 202280.3 $8.0 $574.5 $(64.4)$146.6 $(90.6)$574.1 
December 31, 202180.1 $8.0 $578.1 $(64.4)$102.6 $(101.0)$523.3 
Net income— — — — 44.2 — 44.2 
Amortization of net actuarial losses and prior service costs, net of income taxes— — — — — 10.4 10.4 
Adjustment to dividends — — — — 0.8 — 0.8 
Cumulative effect of change in accounting guidance (see Note 1)— (5.6)— (1.0)— (6.6)
Repurchase of shares for withholding taxes and option costs under equity plans (0.1)— (4.3)— — — (4.3)
Stock-based compensation and shares issued under equity plans0.3 — 6.3 — — — 6.3 
June 30, 202280.3 $8.0 $574.5 $(64.4)$146.6 $(90.6)$574.1 
See Notes to Unaudited Condensed Consolidated Financial Statements.
4


Aerojet Rocketdyne Holdings, Inc.
Condensed Consolidated Statements of Cash Flows
(Unaudited)
Six months ended June 30,
 20222021
 (In millions)
Operating Activities
Net income $44.2 $63.1 
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization28.2 30.9 
Amortization of debt discount and deferred financing costs0.8 3.0 
Stock-based compensation2.0 10.1 
Retirement benefits, net(13.1)2.8 
Loss on debt 9.6 
Other, net1.4 (0.8)
Changes in assets and liabilities:
Accounts receivable(109.7)(91.5)
Contract assets (23.1)(1.9)
Other current assets(26.2)2.3 
Recoverable environmental remediation costs8.5 7.3 
Other noncurrent assets35.7 12.3 
Accounts payable(18.8)(0.9)
Contract liabilities5.0 (17.4)
Other current liabilities87.0 6.6 
Deferred income taxes(91.5)(3.3)
Reserves for environmental remediation costs(4.9)(6.8)
Other noncurrent liabilities and other(34.3)(5.2)
Net Cash (Used in) Provided by Operating Activities (108.8)20.2 
Investing Activities
Purchases of marketable securities(0.4)(1.9)
Capital expenditures(11.5)(12.3)
Net Cash Used in Investing Activities(11.9)(14.2)
Financing Activities
Dividend payments(1.2)(428.5)
Debt repayments(14.3)(155.8)
Repurchase of shares for withholding taxes and option costs under equity plans (4.3)(4.0)
Proceeds from shares issued under equity plans0.4 4.1 
Net Cash Used in Financing Activities(19.4)(584.2)
Net Decrease in Cash, Cash Equivalents and Restricted Cash(140.1)(578.2)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period703.4 1,152.5 
Cash, Cash Equivalents and Restricted Cash at End of Period$563.3 $574.3 
Supplemental disclosures of cash flow information
Cash paid for interest$7.2 $7.2 
Cash paid for income taxes, net of refunds28.7 18.6 
See Notes to Unaudited Condensed Consolidated Financial Statements.
5


Aerojet Rocketdyne Holdings, Inc.
Notes to Unaudited Condensed Consolidated Financial Statements
Note 1. Basis of Presentation and Nature of Operations
Aerojet Rocketdyne Holdings, Inc. ("Aerojet Rocketdyne Holdings" or the "Company") has prepared the accompanying unaudited condensed consolidated financial statements, including the accounts of the Company and its 100% owned and majority owned subsidiaries, in accordance with the instructions to Form 10-Q. The December 31, 2021, condensed consolidated balance sheet was derived from audited financial statements, but does not include all of the disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). These interim financial statements should be read in conjunction with the financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. Certain reclassifications have been made to financial information for prior periods to conform to the current period’s presentation.
The Company believes the accompanying unaudited condensed consolidated financial statements reflect all adjustments, including normal recurring accruals, necessary for a fair statement of its financial position, results of operations, and cash flows for the periods presented. All significant intercompany balances and transactions have been eliminated in consolidation. The preparation of the unaudited condensed consolidated financial statements in conformity with GAAP requires the Company to make estimates and assumptions that affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In addition, the operating results for interim periods may not be indicative of the results of operations for a full year.
The Company’s operations are organized into two segments:
Aerospace and Defense — includes the operations of the Company’s wholly-owned subsidiary Aerojet Rocketdyne, Inc. ("Aerojet Rocketdyne"), a leading technology-based designer, developer and manufacturer of aerospace and defense products and systems for the United States ("U.S.") government, including the Department of Defense ("DoD"), the National Aeronautics and Space Administration ("NASA"), and major aerospace and defense prime contractors.
Real Estate — includes the activities of the Company’s wholly-owned subsidiary Easton Development Company, LLC ("Easton") related to the re-zoning, entitlement, sale, and leasing of the Company’s excess real estate assets.
The fiscal year of the Company's subsidiary, Aerojet Rocketdyne, ends on the last Saturday in December.
A detailed description of the Company’s significant accounting policies can be found in the Company’s most recent Annual Report on Form 10-K for the year ended December 31, 2021.
Revision of Previously Issued Consolidated Financial Statements
During the three months ended March 31, 2022, the Company identified an error in its accounting for income taxes associated with its 2.25% Convertible Senior Notes ("2¼% Notes"). Upon issuance of the 2¼% Notes in 2016, the Company did not record the applicable deferred tax liability associated with the conversion option that had been recorded in other capital, which resulted in an overstatement of other capital, an understatement of deferred tax liabilities and an error in income tax expense in subsequent periods. The Company evaluated the errors and concluded that the errors were not material, either individually or in aggregate, to its current or previously issued consolidated financial statements.
To correct the immaterial errors, the Company has revised its previously issued consolidated financial statements as of December 31, 2021 and 2020, and for each of the three years ended December 31, 2021, 2020, and 2019, and its unaudited condensed consolidated financial statements as of and for the quarters and year-to-date periods ended June 30, 2021, and September 30, 2021. The revision of the historical consolidated financial statements also includes the correction of an immaterial misclassification in its unaudited condensed consolidated balance sheet as of December 31, 2020.
Accordingly, the accompanying financial statements and relevant footnotes to the unaudited condensed consolidated financial statements in this Quarterly Report on Form 10-Q have been revised to correct for such immaterial errors. See Note 12 for additional information. The Company will present the revision of its previously issued consolidated financial statements as of December 31, 2021, and for the years ended December 31, 2021 and 2020, in connection with the future filing of its 2022 Annual Report on Form 10-K. Additionally, the Company will present the revision of its previously issued condensed consolidated financial statements as of and for the three and nine months ended September 30, 2021, in connection with the future filings of its Quarterly Reports on Form 10-Q.
Terminated Merger Agreement
On December 20, 2020, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Lockheed Martin Corporation ("Lockheed Martin") and Mizar Sub, Inc., a wholly-owned subsidiary of Lockheed Martin, pursuant to which each share of common stock of the Company would have been automatically converted into the right to receive cash in an amount equal to $51.00 per share, adjusted from $56.00 following the payment of a one-time cash dividend of $5.00 per share paid in March 2021 and the Company would have become a wholly-owned subsidiary of Lockheed Martin (the "Merger").
On January 25, 2022, the Federal Trade Commission ("FTC") filed a complaint against the Company and Lockheed Martin in the FTC’s administrative court and a complaint in U.S. federal court seeking a preliminary injunction to stop the deal pending an administrative trial. On February 13, 2022, Lockheed Martin notified the Company that it had elected to terminate the Merger
6


Agreement. On February 14, 2022, pursuant to the parties’ joint motion, the administrative complaint and the U.S. federal court complaint were dismissed.
Coronavirus ("COVID-19") Pandemic
During the three and six months ended June 30, 2022, the Company’s financial results and operations were not materially adversely impacted by the COVID-19 pandemic. The extent to which the Company’s future financial results could be impacted by the COVID-19 pandemic depends on future developments that are highly uncertain and cannot be predicted at this time. The Company is not aware of any specific event or circumstance that would require an update to its estimates or judgments or a revision of the carrying value of its assets or liabilities as of the date of issuance of this Quarterly Report on Form 10-Q. These estimates may change, as new events occur and additional information is obtained. Actual results could differ materially from these estimates under different assumptions or conditions.
Recently Issued Accounting Pronouncements
In August 2020, the Financial Accounting Standards Board issued guidance which simplifies the accounting for convertible instruments. This guidance eliminates certain models that require separate accounting for embedded conversion features, in certain cases. Additionally, among other changes, the guidance eliminates certain of the conditions for equity classification for contracts in an entity’s own equity. The guidance also requires entities to use the if-converted method for all convertible instruments in the diluted earnings per share calculation and include the effect of share settlement for instruments that may be settled in cash or shares, except for certain liability-classified share-based payment awards. The Company adopted the new guidance as of January 1, 2022, using the modified retrospective approach resulting in the following adjustment (i) a decrease of $1.9 million in deferred tax liabilities, (ii) a decrease of $5.6 million in other capital, (iii) a decrease of $1.0 million in retained earnings, and (iv) an increase of $8.5 million in debt.
Note 2. Earnings Per Share ("EPS") of Common Stock
The following table reconciles the numerator and denominator used to calculate basic and diluted EPS of common stock:
Three months ended June 30,Six months ended June 30,
 2022202120222021
 (In millions, except per share amounts)
Numerator:
Net income $16.4 $45.0 $44.2 $63.1 
Income allocated to participating securities(0.1)(0.3)(0.2)(0.4)
Net income for basic EPS$16.3 $44.7 $44.0 $62.7 
Interest on 2¼% Notes
0.7  1.4  
Net income for diluted EPS$17.0 $44.7 $45.4 $62.7 
Denominator:
Basic weighted average shares80.3 79.7 80.2 78.5 
Effect of:
21/4% Notes
5.6 2.8 5.6 2.8 
Diluted weighted average shares85.9 82.5 85.8 81.3 
Basic
Basic EPS$0.20 $0.56 $0.55 $0.80 
Diluted
Diluted EPS$0.20 $0.54 $0.53 $0.77 
Securities which would have been anti-dilutive are insignificant and are excluded from the computation of diluted earnings per share in all periods presented.
The increase in the dilutive effect of the 2¼% Notes in the three and six months ended June 30, 2022, is the result of the adoption of new accounting guidance. See Note 1.
Note 3. Revenue Recognition
In the Company’s Aerospace and Defense segment, the majority of revenue is earned from long-term contracts to design, develop, and manufacture aerospace and defense products for, and provide related services to, the Company’s customers, including the U.S. government and major aerospace and defense prime contractors.
The Company evaluates the contract value and cost estimates for performance obligations at least quarterly and more frequently when circumstances significantly change. Factors considered in estimating the work to be completed include, but are not limited to: labor productivity, the nature and technical complexity of the work to be performed, availability and cost volatility of materials, subcontractor and vendor performance, warranty costs, volume assumptions, anticipated labor agreements, inflationary trends, schedule and performance delays, availability of funding from the customer, and the recoverability of costs incurred outside the original contract included in any estimates to complete. When the Company’s estimate of total costs to be incurred to satisfy a performance obligation exceeds the expected revenue, the Company recognizes the loss immediately. When the Company determines that a change in estimates has an impact on the associated profit of a performance obligation,
7


the Company records the cumulative positive or negative adjustment to the statement of operations. Changes in estimates and assumptions related to the status of certain long-term contracts may have a material effect on the Company’s operating results. The following table summarizes the impact of the changes in significant contract accounting estimates on the Company’s Aerospace and Defense segment operating results:
Three months ended June 30,Six months ended June 30,
 2022202120222021
 (In millions, except per share amounts)
Net (unfavorable) favorable effect of the changes in contract estimates on net sales$(16.0)$25.7 $(16.2)$23.8 
Net (unfavorable) favorable effect of the changes in contract estimates on income before income taxes(29.5)24.0 (32.2)21.6 
Net (unfavorable) favorable effect of the changes in contract estimates on net income (21.0)18.0 (23.0)16.1 
Net (unfavorable) favorable effect of the changes in contract estimates on basic and diluted EPS(0.26)0.22 (0.29)0.20 
For the three and six months ended June 30, 2022, net unfavorable changes in contract estimates were primarily driven by cost growth from supply chain disruptions and necessary technical and manufacturing changes identified in the three months ended June 30, 2022, on a portion of the Standard Missile program. For the six months ended June 30, 2021, net favorable changes in contract estimates were primarily driven by improved performance and risk retirements on the RS-68 and Patriot Advanced Capability-3 ("PAC-3") programs partially offset by cost growth on a portion of the Standard Missile program.
In the Company’s Aerospace and Defense segment, the timing of revenue recognition, customer invoicing, and collections produces accounts receivable, contract assets, and contract liabilities in the unaudited condensed consolidated balance sheets. The following table summarizes contract assets and liabilities:
June 30, 2022December 31, 2021
 (In millions)
Contract assets$386.4 $359.6 
Reserve for overhead rate disallowance(9.1)(5.4)
Contract assets, net of reserve377.3 354.2 
Contract liabilities371.5 366.5 
Net contract assets (liabilities), net of reserve$5.8 $(12.3)
Net contract assets increased by $18.1 million from December 31, 2021, primarily due to an increase in unbilled receivables. During the six months ended June 30, 2022, the Company recognized sales of $225.2 million that were included in the Company's contract liabilities as of December 31, 2021.
As of June 30, 2022, the Company’s total remaining performance obligations, also referred to as backlog, totaled $6.9 billion. The Company expects to recognize approximately 34%, or $2.3 billion, of the remaining performance obligations as sales over the next twelve months, an additional 24% the following twelve months, and 42% thereafter.
The Company's contracts are largely categorized as either "fixed-price" (largely used by the U.S. government for production-type contracts) or "cost-reimbursable" (largely used by the U.S. government for development-type contracts). Fixed-price contracts present the risk of unreimbursed cost overruns, potentially resulting in lower than expected contract profits and margins. This risk is generally lower for cost-reimbursable contracts which, as a result, generally have a lower margin. The following table summarizes the percentages of net sales by contract type:
Three months ended June 30,Six months ended June 30,
 2022202120222021
Fixed-price55 %60 %56 %56 %
Cost-reimbursable45 40 44 44 
The principal end user customers are primarily agencies of the U.S. government as illustrated in the following table:
Three months ended June 30,Six months ended June 30,
 2022202120222021
U.S. government94 %97 %95 %97 %
Non U.S. government6 3 5 3 
The Company's Real Estate segment represented less than 1% of the Company's net sales for the three and six months ended June 30, 2022 and 2021.
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Note 4. Stock-Based Compensation
The following table summarizes stock-based compensation by type of award:
Three months ended June 30,Six months ended June 30,
 2022202120222021
 (In millions)
Stock Appreciation Rights
$0.6 $1.4 $(4.3)$(0.3)
Restricted stock and restricted stock units, service based1.3 1.7 2.7 3.0 
Restricted stock and restricted stock units, performance based1.0 4.0 3.6 6.9 
Employee stock purchase plan 0.2  0.5 
Total stock-based compensation expense $2.9 $7.3 $2.0 $10.1 
Note 5. Balance Sheet Accounts
a. Fair Value of Financial Instruments
Financial instruments are classified using a three-tiered fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.
 Fair value measurement as of June 30, 2022
 TotalQuoted Prices in
Active Markets
for Identical
Assets
(Level 1)

Other
Observable
Inputs
(Level 2)

Unobservable
Inputs
(Level 3)
 (In millions)
Money market funds$364.6 $364.6 $ $ 
Registered investment companies0.9 0.9   
Commercial paper119.9  119.9  
Equity securities9.1 9.1   
Total$494.5 $374.6 $119.9 $ 
 Fair value measurement as of December 31, 2021
 TotalQuoted Prices in
Active Markets
for Identical
Assets
(Level 1)

Other
Observable
Inputs
(Level 2)

Unobservable
Inputs
(Level 3)
 (In millions)
Money market funds$388.6 $388.6 $ $ 
Registered investment companies1.3 1.3   
Commercial paper35.0  35.0  
Equity securities10.6 10.6   
Total$435.5 $400.5 $35.0 $ 
As of June 30, 2022 and December 31, 2021, the total estimated fair value for commercial paper was classified as cash and cash equivalents as the remaining maturity at date of purchase was less than three months.
The carrying amounts of certain of the Company’s financial instruments, including cash and cash equivalents, restricted cash, accounts receivable, accounts payable, accrued compensation, and other accrued liabilities, approximate fair value because of their short maturities.
The following table summarizes the estimated fair value and principal amount for outstanding debt obligations excluding finance lease obligations:
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 Fair ValuePrincipal Amount
 June 30, 2022December 31, 2021June 30, 2022December 31, 2021
 (In millions)
Term Loan$263.3 $275.8 $269.1 $282.2 
21/4% Notes
227.4 266.1 145.9 145.9 
Total$490.7 $541.9 $415.0 $428.1 
The fair value of the 2¼% Notes was determined using broker quotes that are based on open markets for the Company's debt securities (Level 2 securities). The fair value of the Term Loan (as defined below) was estimated based on a third-party model used to derive a relative value price using comparable corporate loans within a similar industry, credit quality, and currency.
b. Accounts Receivable
June 30, 2022December 31, 2021
 (In millions)
Billed receivables under long-term contracts$170.1 $60.3 
Other trade receivables0.2 0.3 
Accounts receivable$170.3 $60.6 

c. Other Current Assets
June 30, 2022December 31, 2021
 (In millions)
Deferred costs recoverable from the U.S. government $41.6 $37.4 
Income tax receivable 13.8 
Inventories11.8 10.0 
Prepaid expenses15.9 15.3 
Other56.4 23.0 
Other current assets$125.7 $99.5 
d. Property, Plant and Equipment, net
June 30, 2022December 31, 2021
 (In millions)
Land$71.1 $71.1 
Buildings and improvements504.7 503.0 
Machinery and equipment, including capitalized software506.0 499.1 
Construction-in-progress53.2 50.0 
1,135.0 1,123.2 
Less: accumulated depreciation(724.0)(702.1)
Property, plant and equipment, net$411.0 $421.1 
e. Other Noncurrent Assets
June 30, 2022December 31, 2021
 (In millions)
Real estate held for entitlement and leasing$104.4 $103.7 
Deferred costs recoverable from the U.S. government 62.1 62.1 
Receivable from Northrop Grumman Corporation for environmental remediation costs