What changed 10-Q

Item 5. Other Information

2026-02-10 compared with 2025-08-06 · 1 added, 2 removed, 19 unchanged (14% of the section changed)

13 unchanged sentences

104 Cover Page Interactive Data File (embedded within the Inline XBRL document and contained in Exhibit 101)

* Denotes a management contract, compensatory plan, or arrangement

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

AMENTUM HOLDINGS, INC.

August 6, 2025 By:

February 10, 2026 By:

/s/ Travis B.

2 unchanged sentences

Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.