Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2025

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

A.Organization

Leonardo DRS, Inc., together with its wholly owned subsidiaries (hereinafter, “DRS,” “the Company,” “us,” “our,” or “we”) is a supplier of defense electronics products, systems and military support services. The Company’s largest stockholder is Leonardo S.p.A, an Italian multi-national aerospace, defense and security company headquartered in Rome, Italy, through its ultimate sole ownership of Leonardo US Holding, LLC (“US Holding”). US Holding is the majority stockholder of the Company.

DRS is a provider of defense products and technologies that are used across land, air, sea, space and cyber domains. Our diverse array of defense systems and solutions are offered to all branches of the U.S. military, major aerospace and defense prime contractors, government intelligence agencies, international military customers and industrial markets for deployment on a wide range of military platforms. We focus our capabilities in areas of critical importance to the U.S. military, such as advanced sensing, network computing, force protection and electric power and propulsion.

These capabilities directly align with our two reportable operating segments: Advanced Sensing and Computing (“ASC”) and Integrated Mission Systems (“IMS”). The DoD is our largest customer and accounts for approximately 80% and 82% of our total revenues as an end-user for the six months ended June 30, 2025 and 2024, respectively. Specific international and commercial market opportunities exist within these segments and comprise approximately 20% and 18% of our total revenues for the six months ended June 30, 2025 and 2024, respectively. Our two reportable segments reflect the way performance is assessed and resources are allocated by our Chief Executive Officer, who is our chief operating decision maker (“CODM”).

B.Basis of Presentation

The accompanying unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and include the accounts of DRS, its wholly owned subsidiaries and its controlling interests and contain all adjustments, which are of a normal and recurring nature, considered necessary by management to present fairly the financial position, results of operations and cash flows for the periods presented. Interests in ventures that are controlled by the Company, or for which the Company is otherwise deemed to be the primary beneficiary, are consolidated. For joint ventures in which the Company does not have a controlling interest, but exerts significant influence, the Company applies the equity method of accounting. All intercompany transactions and balances have been eliminated in consolidation.

Interim Financial Statements. The unaudited Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). These rules and regulations permit some of the information and footnote disclosures included in financial statements prepared in accordance with U.S. GAAP to be condensed or omitted.

These unaudited Consolidated Financial Statements should be read in conjunction with our audited Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2024.

C.New Accounting Pronouncements

Improvements to Income Tax Disclosures

In December 2023, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which requires additional disclosures regarding rate reconciliation, income taxes paid, and other income tax disclosures. The new standard is effective for fiscal years beginning after December 15,

2024, on a prospective basis. Retrospective application is permitted. We are currently evaluating the impact of adopting this new pronouncement and plan to adopt these amendments using the prospective approach for annual disclosures in fiscal year 2025.

Disaggregation of Income Statement Expenses

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disclosure of specified information about certain costs and expenses. The new standard is effective for fiscal years beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027, on a prospective basis. We are currently evaluating the impact of adopting this new pronouncement.