Sean Thomas Mullen - 17 Nov 2025 Form 4 Insider Report for Amentum Holdings, Inc. (AMTM)

Role
Chief Growth Officer
Signature
/s/ Mark Esposito, Attorney-in-Fact
Issuer symbol
AMTM
Transactions as of
17 Nov 2025
Net transactions value
$0
Form type
4
Filing time
19 Nov 2025, 17:53:50 UTC
Previous filing
10 Nov 2025
Next filing
19 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Mullen Sean Thomas Chief Growth Officer C/O AMENTUM HOLDINGS, INC., 4800 WESTFIELDS BOULEVARD, SUITE 400, CHANTILLY /s/ Mark Esposito, Attorney-in-Fact 19 Nov 2025 0002034388

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMTM Common Stock Award $0 +17,817 +554% $0.000000 21,034 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 One-third of the restricted stock units shall vest on each of the first, second and third anniversaries of November 17, 2025.