Amentum Holdings, Inc.
Public company- Headquarters
- CHANTILLY, Virginia
- Ticker
- AMTM
- CIK
- 0002011286
WARN notices since 2024
Workers affected since 2024
Executive changes, last 12 months
Last event
Workers affected over time
Cumulative workers in WARN notices since 2024
| Notice date | Workers affected | Cumulative |
|---|---|---|
| Jul 31, 2024 | 20 | 20 |
| Sep 2, 2024 | 62 | 82 |
| Jan 27, 2025 | 0 | 82 |
| Jan 27, 2025 | 62 | 144 |
| Jan 28, 2025 | 40 | 184 |
| Mar 24, 2025 | 93 | 277 |
| Jun 5, 2025 | 92 | 369 |
| Jun 24, 2025 | 135 | 504 |
| Jul 30, 2025 | 55 | 559 |
| Aug 25, 2025 | 60 | 619 |
| Oct 1, 2025 | 10 | 629 |
| Dec 4, 2025 | 0 | 629 |
| Mar 9, 2026 | 27 | 656 |
| Mar 9, 2026 | 9 | 665 |
| Aug 18, 2026 | 317 | 982 |
| Aug 18, 2026 | 65 | 1,047 |
| Aug 25, 2026 | 74 | 1,121 |
Leadership
No executive changes on record.
Related companies
Same industry and state, with recent events.
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WARN notice: CA
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WARN notice: Sandy, UT
- WARN notice
WARN notice: Chantilly, VA, OR
Amentum filed a WARN notice with the Oregon WARN list on Aug 25, 2026 covering 74 workers in Chantilly, VA.
Source: Oregon WARN list, filed Aug 25, 2026Site: Chantilly, VA, OR
Workers affected: 74
layoffs from Nov 13, 2026
WARN noticeWARN notice: Hanover, MD
Amentum filed a WARN notice with the Maryland WARN list on Aug 18, 2026 covering 65 workers at 7710 Milestone Parkway Hanover, MD 21076. The layoffs take effect on Nov 13, 2026.
Source: Maryland WARN list, filed Aug 18, 2026Site: Hanover, MD
Workers affected: 65
layoffs from Oct 31, 2026
WARN noticeWARN notice: Hanover, MD
Amentum filed a WARN notice with the Maryland WARN list on Aug 18, 2026 covering 317 workers at 7710 Milestone Parkway Hanover, MD 21076. The layoffs take effect on Oct 31, 2026.
Source: Maryland WARN list, filed Aug 18, 2026Site: Hanover, MD
Workers affected: 317
layoffs from May 3, 2026
WARN noticeWARN notice: Fort Washington, MD
Amentum filed a WARN notice with the Maryland WARN list on Mar 9, 2026 covering 9 workers at 10530 Riverview Road Fort Washington, MD 20744. The layoffs take effect on May 3, 2026.
Source: Maryland WARN list, filed Mar 9, 2026Site: Fort Washington, MD
Workers affected: 9
layoffs from May 3, 2026
WARN noticeWARN notice: Suitland, MD
Amentum filed a WARN notice with the Maryland WARN list on Mar 9, 2026 covering 27 workers at 4251 Suitland Road Suitland, MD 20746. The layoffs take effect on May 3, 2026.
Source: Maryland WARN list, filed Mar 9, 2026Site: Suitland, MD
Workers affected: 27
- WARN notice
WARN notice: CO
Amentum (Update) filed a WARN notice with the Colorado WARN list on Dec 4, 2025. The notice does not state how many workers it covers.
Source: Colorado WARN list, filed Dec 4, 2025Site: CO
- WARN notice
WARN notice: CO
Amentum filed a WARN notice with the Colorado WARN list on Oct 1, 2025 covering 10 workers.
Source: Colorado WARN list, filed Oct 1, 2025Site: CO
Workers affected: 10
- WARN notice
WARN notice: CO
Amentum filed a WARN notice with the Colorado WARN list on Aug 25, 2025 covering 60 workers.
Source: Colorado WARN list, filed Aug 25, 2025Site: CO
Workers affected: 60
Last verified Nov 8, 2026