Huntington Ingalls Industries — Feb 6, 2025 release

• Newport News, VA 23607 HII.com Page 5 of 13 HII’s Financial Outlook 1 includes the following expectations: • Mid to long term 5 HII revenue growth of 4%+ • Mid to long term 5 shipbuilding revenue 2 growth of approximately 4% • Mid to long term 5 Mission Technologies revenue growth of approximately 5% • FY25 shipbuilding revenue 2 between $8.9 and $9.1 billion; expect shipbuilding operating margin 2 between 5.5% and 6.5% • FY25 Mission Technologies revenue between $2.9 to $3.1 billion, Mission Technologies segment operating margin 2 between 4.0% and 4.5%; and Mission Technologies EBITDA margin 2 between 8.0% and 8.5% • FY25 free cash flow 2,3 between $300 and $500 million FY25 Outlook 1 Shipbuilding Revenue 2 $8.9B - $9.1B Shipbuilding Operating Margin 2 5.5% - 6.5% Mission Technologies Revenue $2.9B - $3.1B Mission Technologies Segment Operating Margin 2 4.0% - 4.5% Mission Technologies EBITDA Margin 2 8.0% - 8.5% Operating FAS/CAS Adjustment ($43M) Non-current State Income Tax Benefit/Expense 4 ~$0M Interest Expense ($130M) Non-operating Retirement Benefit $191M Effective Tax Rate ~21% Depreciation & Amortization ~$340M Capital Expenditures ~4% of Sales Free Cash Flow 2, 3 $300M - $500M 1 The financial outlook, expectations and other forward looking statements provided by the company for 2025 and beyond reflect the company's judgment based on the information available at the time of this release. 2 Non-GAAP measures. See Exhibit B for definitions. In reliance upon Item 10(e)(1)(i)(B) of Regulation S-K, reconciliations of forward–looking GAAP and non–GAAP measures are not provided because we are unable to provide such reconciliations without unreasonable effort due to the uncertainty and inherent difficulty of predicting the future occurrence and financial impact of certain elements of GAAP and non-GAAP measures. For the same reasons, we are unable to address the significance of the unavailable information. 3 Outlook is based on current tax law and assumes the provisions requiring capitalization of R&D expenditures for tax purposes are not deferred or repealed. 4 Outlook is based on current tax law. Repeal or deferral of provisions requiring capitalization of R&D expenditures would result in elevated non-current state income tax expense. 5