HUNTINGTON INGALLS INDUSTRIES, INC. (HII) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-07-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: HUNTINGTON INGALLS INDUSTRIES, INC. (HII) CIK: 0001501585 --- Reporting Owner --- Name: DONALD KIRKLAND H CIK: 0001579933 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock (SUA) Date: 2026-07-01 | Code: A (Grant or award) Shares: +174 | Price: $278.97 Total Value: $48,540.78 Shares Owned After: 7,020.562 | Ownership: D (Direct) Footnotes: [F1] Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3. --- Holdings --- [Holding #1] Security: Common Stock Ownership: D (Direct) --- Footnotes (Complete Index) --- F1: Shares of common stock deferred into stock unit account pursuant to Huntington Ingalls Industries, Inc. 2022 Long-Term Incentive Stock Plan in an exempt transaction pursuant to Rule 16b-3. --- Signature --- /s/ /s/ Tiffany M. King, Attorney-in-Fact (2026-07-02)