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 |
|---|---|---|---|
| S-3ASR | Automatic shelf registration | Oct 1, 2025 | — |
| 424B4 | Prospectus | Mar 12, 2025 | — |
| S-1 | Registration statement | Mar 10, 2025 | — |
| S-8 | Employee stock plan registration | Nov 8, 2024 | — |
| S-8 | Employee stock plan registration | Oct 4, 2024 | — |
Showing 5 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.