| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Loughran Barbara | Director | C/O AMENTUM HOLDINGS, INC., 4800 WESTFIELDS BOULEVARD, SUITE 400, CHANTILLY | /s/ Indira Lall, Attorney-in-fact | 10 Feb 2026 | 0001778333 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMTM | Common Stock | Award | $0 | +5,062 | +110% | $0.000000 | 9,662 | 06 Feb 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | The restricted stock units shall vest on the date of the next annual meeting of stockholders of the Issuer. |