# Amentum Holdings, Inc.: filings AMTM · NYSE · CIK 2011286 · [Industrials](/sectors/industrials.md) · fiscal year ends Oct 2 Pages: [Overview](/companies/amtm.md) · [Financials](/companies/amtm/financials.md) · [Filings](/companies/amtm/filings.md) · [Insiders](/companies/amtm/insiders.md) ## Reports and events: 35 filings Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 76, 3 28, 8-K 19, CORRESP 7, 10-Q 6, UPLOAD 6, 10-12B/A 4, 4/A 4, 10-K 2, ARS 2, DEF 14A 2, DEFA14A 2, DRS 2, S-8 2, SC 13G/A 2, SCHEDULE 13D 2, SCHEDULE 13G/A 2, 10-12B 1, 3/A 1, 424B4 1, 8-K/A 1, CERT 1, DRS/A 1, DRSLTR 1, EFFECT 1, S-1 1, S-3ASR 1, SC 13D 1, SCHEDULE 13D/A 1, SCHEDULE 13G 1, SEC STAFF ACTION 1). | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-10-02 | 20:19 ET | [8-K](/filings/0002011286-26-000026.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0002011286-26-000026 | | 2026-08-11 | 20:25 ET | [10-Q](/filings/0001628280-26-055727.md) | Quarterly report, period 2026-07-03 | 0001628280-26-055727 | | 2026-08-10 | 20:42 ET | [8-K](/filings/0001628280-26-055294.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-055294 | | 2026-05-12 | 20:37 ET | [10-Q](/filings/0001628280-26-034156.md) | Quarterly report, period 2026-04-03 | 0001628280-26-034156 | | 2026-05-11 | 21:05 ET | [8-K](/filings/0001628280-26-033648.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-033648 | | 2026-04-28 | 12:01 ET | [8-K](/filings/0002011286-26-000011.md) | 1.01 Entry into a material agreement | 0002011286-26-000011 | | 2026-02-10 | 14:41 ET | [8-K](/filings/0001628280-26-006679.md) | 5.07 Shareholder vote results | 0001628280-26-006679 | | 2026-02-10 | 14:20 ET | [10-Q](/filings/0001628280-26-006676.md) | Quarterly report, period 2026-01-02 | 0001628280-26-006676 | | 2026-02-09 | 21:37 ET | [8-K](/filings/0001628280-26-006491.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-006491 | | 2025-12-19 | 21:05 ET | [DEF 14A](/filings/0001104659-25-123111.md) | Proxy statement, period 2026-02-06 | 0001104659-25-123111 | | 2025-11-25 | 21:29 ET | [10-K](/filings/0001628280-25-053993.md) | Annual report, period 2025-10-03 | 0001628280-25-053993 | | 2025-11-24 | 21:41 ET | [8-K](/filings/0001628280-25-053839.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-25-053839 | | 2025-08-06 | 20:19 ET | [10-Q](/filings/0002011286-25-000163.md) | Quarterly report, period 2025-06-27 | 0002011286-25-000163 | | 2025-08-05 | 20:45 ET | [8-K](/filings/0002011286-25-000158.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0002011286-25-000158 | | 2025-05-07 | 20:37 ET | [10-Q](/filings/0002011286-25-000141.md) | Quarterly report, period 2025-03-28 | 0002011286-25-000141 | | 2025-05-06 | 20:38 ET | [8-K](/filings/0002011286-25-000135.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0002011286-25-000135 | | 2025-03-10 | 12:21 ET | [S-1](/filings/0001628280-25-011468.md) | Registration statement | 0001628280-25-011468 | | 2025-03-07 | 21:44 ET | [8-K](/filings/0002011286-25-000094.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0002011286-25-000094 | | 2025-03-07 | 21:38 ET | [8-K](/filings/0002011286-25-000090.md) | 9.01 Financial statements and exhibits | 0002011286-25-000090 | | 2025-03-07 | 21:36 ET | [8-K](/filings/0002011286-25-000085.md) | 5.07 Shareholder vote results | 0002011286-25-000085 | | 2025-02-05 | 21:36 ET | [10-Q](/filings/0002011286-25-000060.md) | Quarterly report, period 2024-12-27 | 0002011286-25-000060 | | 2025-02-04 | 21:34 ET | [8-K](/filings/0002011286-25-000056.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0002011286-25-000056 | | 2025-01-30 | 21:21 ET | [8-K](/filings/0002011286-25-000041.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0002011286-25-000041 | | 2025-01-21 | 21:22 ET | [DEF 14A](/filings/0002011286-25-000024.md) | Proxy statement, period 2025-03-05 | 0002011286-25-000024 | | 2024-12-23 | 00:03 ET | [SCHEDULE 13D](/filings/0001493152-24-051925.md) | Ownership report, active investor | 0001493152-24-051925 | | 2024-12-23 | 23:03 ET | [SCHEDULE 13D](/filings/0000950157-24-001703.md) | Ownership report, active investor | 0000950157-24-001703 | | 2024-12-19 | 23:05 ET | [SCHEDULE 13D/A](/filings/0000950157-24-001690.md) | Ownership report, active investor, amended | 0000950157-24-001690 | | 2024-12-17 | 21:35 ET | [10-K](/filings/0002011286-24-000072.md) | Annual report, period 2024-09-27 | 0002011286-24-000072 | | 2024-12-16 | 21:39 ET | [8-K](/filings/0002011286-24-000064.md) | 2.02 Results of operations | 0002011286-24-000064 | | 2024-11-13 | 21:18 ET | [8-K](/filings/0002011286-24-000042.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0002011286-24-000042 | | 2024-10-04 | 22:13 ET | [SC 13D](/filings/0000950157-24-001378.md) | Ownership report, active investor | 0000950157-24-001378 | | 2024-10-03 | 20:48 ET | [8-K/A](/filings/0000950157-24-001363.md) | 1.01 Entry into a material agreement; 1.02 Termination of a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000950157-24-001363 | | 2024-10-03 | 20:21 ET | [8-K](/filings/0000950157-24-001361.md) | 1.01 Entry into a material agreement; 2.01 Completion of an acquisition or disposition; 5.01 Change in control; 5.02 Departure or appointment of officers or directors; 5.03 Amendment to articles or bylaws; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000950157-24-001361 | | 2024-09-27 | 19:46 ET | [8-K](/filings/0001193125-24-227910.md) | 5.02 Departure or appointment of officers or directors; 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001193125-24-227910 | | 2024-09-18 | 20:47 ET | [8-K](/filings/0001193125-24-221432.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-221432 | Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:06 ET. No prices; not investment advice.