| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Bruning Jill L | Chief Technology Officer | C/O AMENTUM HOLDINGS, INC., 4800 WESTFIELDS BOULEVARD, SUITE 400, CHANTILLY | /s/ Mark Esposito, Attorney-in-Fact | 19 Nov 2025 | 0002037037 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMTM | Common Stock | Award | $0 | +17,817 | +527% | $0.000000 | 21,198 | 17 Nov 2025 | Direct | F1 |
| 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. |