Stephen A. Arnette - 17 Nov 2025 Form 4/A - Amendment Insider Report for Amentum Holdings, Inc. (AMTM)

Role
Chief Operating Officer
Signature
/s/ Mark Esposito, Attorney-in-Fact
Issuer symbol
AMTM
Transactions as of
17 Nov 2025
Transactions value $
$0
Form type
4/A - Amendment
Filing time
19 Dec 2025, 18:45:20 UTC
Date Of Original Report
19 Nov 2025
Previous filing
18 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Arnette Stephen A Chief Operating Officer C/O AMENTUM HOLDINGS, INC., 4800 WESTFIELDS BOULEVARD, SUITE 400, CHANTILLY /s/ Mark Esposito, Attorney-in-Fact 19 Dec 2025 0001919492

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding AMTM Common Stock 94.3K 17 Nov 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

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