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Amentum Holdings, Inc. Director's Dealing 2025

Dec 19, 2025

30969_dirs_2025-12-19_fd25b9f5-f9f0-4a75-9949-d05e8c428316.zip

Director's Dealing

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SEC Form 4/A — Form 4/A

Issuer: Amentum Holdings, Inc. (AMTM)
CIK: 0002011286
Period of Report: 2025-11-17

Reporting Person: Arnette Stephen A (Chief Operating Officer)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	94299	Direct

Footnotes

F1: This Form 4/A is being filed solely to report the correct holding in Table I.