4//SEC Filing
Arnette Stephen A 4
Accession 0001628280-25-052958
CIK 0002011286other
Filed
Nov 17, 7:00 PM ET
Accepted
Nov 18, 4:57 PM ET
Size
23.1 KB
Accession
0001628280-25-052958
Insider Transaction Report
Form 4
Arnette Stephen A
Chief Operating Officer
Transactions
- Exercise/Conversion
Common Stock
2025-11-15+5,758→ 37,386 total - Exercise/Conversion
Restricted Stock Units
2025-11-16−3,681→ 0 total→ Common Stock (3,681 underlying) - Tax Payment
Common Stock
2025-11-16$22.07/sh−1,120$24,718→ 46,065 total - Exercise/Conversion
Restricted Stock Units
2025-11-16−5,053→ 5,053 total→ Common Stock (5,053 underlying) - Tax Payment
Common Stock
2025-11-15$22.07/sh−1,403$30,964→ 35,983 total - Tax Payment
Common Stock
2025-11-16$22.07/sh−1,231$27,168→ 39,805 total - Exercise/Conversion
Common Stock
2025-11-16+3,681→ 43,486 total - Exercise/Conversion
Common Stock
2025-11-16+4,596→ 47,185 total - Exercise/Conversion
Common Stock
2025-11-16+5,053→ 41,036 total - Exercise/Conversion
Restricted Stock Units
2025-11-15−5,758→ 11,515 total→ Common Stock (5,758 underlying) - Exercise/Conversion
Restricted Stock Units
2025-11-16−4,596→ 0 total→ Common Stock (4,596 underlying) - Tax Payment
Common Stock
2025-11-16$22.07/sh−897$19,797→ 42,589 total
Footnotes (5)
- [F1]Represents distribution of AMTM common stock upon vesting of restricted stock units.
- [F2]Represents number of shares of AMTM common stock tendered for tax withholding upon vesting of restricted stock units.
- [F3]Each restricted stock unit represents a contingent right to receive one share of AMTM common stock.
- [F4]The restricted stock units awarded vested on November 15, 2025.
- [F5]The restricted stock units awarded vested on November 16, 2025.
Documents
Issuer
Amentum Holdings, Inc.
CIK 0002011286
Entity typeother
Related Parties
1- filerCIK 0001919492
Filing Metadata
- Form type
- 4
- Filed
- Nov 17, 7:00 PM ET
- Accepted
- Nov 18, 4:57 PM ET
- Size
- 23.1 KB