Amentum Holdings, Inc.

10-Q Quarter ended 2026-04-03 May 12, 2026 8-K Results of operations (earnings release) May 11, 2026 8-K Entered a material agreement Apr 28, 2026 8-K Shareholder vote results Feb 10, 2026 10-Q Quarter ended 2026-01-02 Feb 10, 2026 8-K Results of operations (earnings release) Feb 9, 2026 10-K Fiscal year ended 2025-10-03 Nov 25, 2025 8-K Results of operations (earnings release) Nov 24, 2025 10-Q Quarter ended 2025-06-27 Aug 6, 2025 8-K Results of operations (earnings release) Aug 5, 2025 10-Q Quarter ended 2025-03-28 May 7, 2025 8-K Results of operations (earnings release) May 6, 2025 8-K Other events Mar 7, 2025 8-K FORM 8-K Mar 7, 2025 8-K Shareholder vote results Mar 7, 2025 10-Q Quarter ended 2024-12-27 Feb 5, 2025 8-K Results of operations (earnings release) Feb 4, 2025 8-K Director or officer change Jan 30, 2025 10-K Fiscal year ended 2024-09-27 Dec 17, 2024 8-K Results of operations (earnings release) Dec 16, 2024 8-K Director or officer change Nov 13, 2024 8-K/A Entered a material agreement; Terminated a material agreement; Took on a direct financial obligation Oct 3, 2024 8-K Entered a material agreement; Completed an acquisition or disposition; Change in control; Director or officer change; Amended charter or bylaws; Regulation FD disclosure Oct 3, 2024 8-K Director or officer change; Amended charter or bylaws Sep 27, 2024 8-K Regulation FD disclosure Sep 18, 2024 4 FORM 4 May 7, 2026 4 FORM 4 May 7, 2026 4 FORM 4 May 7, 2026 4 FORM 4 May 7, 2026 4 FORM 4 May 7, 2026 SCHEDULE 13G/A May 7, 2026 SCHEDULE 13G/A Mar 26, 2026 4 FORM 4 Mar 5, 2026 4 FORM 4 Mar 4, 2026 4 FORM 4 Feb 18, 2026 4 FORM 4 Feb 10, 2026 4 FORM 4 Feb 10, 2026 4 FORM 4 Feb 10, 2026 4 FORM 4 Feb 10, 2026 4/A FORM 4/A Feb 10, 2026