Amentum Holdings, Inc. SEC filings AMTM
Amentum Holdings, Inc. has 194 filings in SEC EDGAR's recent list, going back to Mar 7, 2024. Its latest annual report, Form ARS, was filed on Dec 19, 2025 for the period ended Oct 3, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 11, 2026, covering the quarter ended Jul 3, 2026. The most recent current report (Form 8-K) was filed on Oct 2, 2026 (officer or director change). The company's fiscal year ends on October 2.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Officer or director change
|
Oct 2, 2026 | Sep 28, 2026 |
| 10-Q | Quarterly report | Aug 11, 2026 | Jul 3, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| 10-Q | Quarterly report | May 12, 2026 | Apr 3, 2026 |
| 8-K |
Current report
Results of operations
|
May 11, 2026 | May 11, 2026 |
| 8-K |
Current report
Material agreement
|
Apr 28, 2026 | Apr 24, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Feb 10, 2026 | Feb 6, 2026 |
| 10-Q | Quarterly report | Feb 10, 2026 | Jan 2, 2026 |
| 8-K |
Current report
Results of operations
|
Feb 9, 2026 | Feb 9, 2026 |
| ARS | Annual report to shareholders | Dec 19, 2025 | Oct 3, 2025 |
| DEFA14A | Additional proxy material | Dec 19, 2025 | — |
| DEF 14A | Proxy statement | Dec 19, 2025 | Feb 6, 2026 |
| 10-K | Annual report | Nov 25, 2025 | Oct 3, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 24, 2025 | Nov 24, 2025 |
| S-3ASR | Automatic shelf registration | Oct 1, 2025 | — |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 27, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2025 | Aug 5, 2025 |
| 10-Q | Quarterly report | May 7, 2025 | Mar 28, 2025 |
| 8-K |
Current report
Results of operations
|
May 6, 2025 | May 6, 2025 |
| 424B4 | Prospectus | Mar 12, 2025 | — |
| EFFECT | Filing | Mar 11, 2025 | — |
| CORRESP | Letter to the SEC | Mar 10, 2025 | — |
| CORRESP | Letter to the SEC | Mar 10, 2025 | — |
| S-1 | Registration statement | Mar 10, 2025 | — |
| 8-K |
Current report
Other events
|
Mar 7, 2025 | Mar 7, 2025 |
| 8-K | Current report | Mar 7, 2025 | Mar 7, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Mar 7, 2025 | Mar 5, 2025 |
| 10-Q | Quarterly report | Feb 5, 2025 | Dec 27, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2025 | Feb 4, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 30, 2025 | Jan 28, 2025 |
| UPLOAD | Letter from the SEC | Jan 24, 2025 | — |
| DRS | Filing | Jan 22, 2025 | — |
| ARS | Annual report to shareholders | Jan 21, 2025 | Sep 27, 2024 |
| DEFA14A | Additional proxy material | Jan 21, 2025 | — |
| DEF 14A | Proxy statement | Jan 21, 2025 | Mar 5, 2025 |
| 10-K | Annual report | Dec 17, 2024 | Sep 27, 2024 |
| 8-K |
Current report
Results of operations
|
Dec 16, 2024 | Dec 16, 2024 |
| 8-K |
Current report
Officer or director change
|
Nov 13, 2024 | Nov 6, 2024 |
| S-8 | Employee stock plan registration | Nov 8, 2024 | — |
| S-8 | Employee stock plan registration | Oct 4, 2024 | — |
| 8-K/A |
Amended current report
Material agreement, Agreement ended, New debt
|
Oct 3, 2024 | Sep 27, 2024 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Change in control, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure
|
Oct 3, 2024 | Sep 27, 2024 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change
|
Sep 27, 2024 | Sep 26, 2024 |
| SEC STAFF ACTION | Filing | Sep 18, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 18, 2024 | Sep 18, 2024 |
| CERT | Nyse certification | Sep 17, 2024 | — |
| CORRESP | Letter to the SEC | Sep 16, 2024 | — |
| 10-12B/A | Filing | Sep 13, 2024 | — |
| CORRESP | Letter to the SEC | Sep 9, 2024 | — |
| 10-12B/A | Filing | Sep 9, 2024 | — |
| UPLOAD | Letter from the SEC | Sep 5, 2024 | — |
| CORRESP | Letter to the SEC | Aug 26, 2024 | — |
| 10-12B/A | Filing | Aug 26, 2024 | — |
| UPLOAD | Letter from the SEC | Aug 21, 2024 | — |
| CORRESP | Letter to the SEC | Aug 5, 2024 | — |
| 10-12B/A | Filing | Aug 5, 2024 | — |
| UPLOAD | Letter from the SEC | Jul 25, 2024 | — |
| CORRESP | Letter to the SEC | Jul 15, 2024 | — |
| 10-12B | Filing | Jul 15, 2024 | — |
| UPLOAD | Letter from the SEC | Jun 4, 2024 | — |
| DRSLTR | Filing | May 10, 2024 | — |
| DRS/A | Filing | May 10, 2024 | — |
| UPLOAD | Letter from the SEC | Apr 4, 2024 | — |
| DRS | Filing | Mar 7, 2024 | — |
Showing 64 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Business Services, NEC (SIC 7389)
- Listed as
- AMTM (NYSE)
- Fiscal year ends
- October 2
- Incorporated in
- DE
- Headquarters
- Chantilly, VA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 2011286
- Former names
- Amazon Holdco Inc. (until Sep 18, 2024)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.