# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001628280-25-053993
Filing Date
2025-11-25
Accepted
2025-11-25 16:29:21
Documents
127
Period of Report
2025-10-03

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | FORM 10-K | amtm-20251003.htm iXBRL | 10-K | 2388234
2 | EX-21.1 | amtm100325ex211.htm | EX-21.1 | 93039
3 | EX-23.1 | amtm100325ex231.htm | EX-23.1 | 4263
4 | EX-31.1 | amtm100325ex311.htm | EX-31.1 | 10499
5 | EX-31.2 | amtm100325ex312.htm | EX-31.2 | 10553
6 | EX-32.1 | amtm100325ex321.htm | EX-32.1 | 4852
7 | EX-32.2 | amtm100325ex322.htm | EX-32.2 | 4865
13 | GRAPHIC | amtm-20251003_g1.jpg | GRAPHIC | 203890
14 | GRAPHIC | amtm-20251003_g2.jpg | GRAPHIC | 92151
| Complete submission text file | 0001628280-25-053993.txt |  | 14464723

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
8 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | amtm-20251003.xsd | EX-101.SCH | 80092
9 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | amtm-20251003_cal.xml | EX-101.CAL | 170609
10 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | amtm-20251003_def.xml | EX-101.DEF | 372368
11 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | amtm-20251003_lab.xml | EX-101.LAB | 1006718
12 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | amtm-20251003_pre.xml | EX-101.PRE | 735590
129 | EXTRACTED XBRL INSTANCE DOCUMENT | amtm-20251003_htm.xml | XML | 2284367

Mailing Address 4800 WESTFIELDS BOULEVARD SUITE 400 CHANTILLY VA 20151
Business Address 4800 WESTFIELDS BOULEVARD SUITE 400 CHANTILLY VA 20151 7035790410
Amentum Holdings, Inc. (Filer) CIK: 0002011286 (see all company filings)

EIN.: 990622272 | State of Incorp.: DE | Fiscal Year End: 1003
Type: 10-K | Act: 34 | File No.: 001-42176 | Film No.: 251521708
SIC: 7389 Services-Business Services, NEC
(CF Office: 07 Trade & Services)