Mullen Sean Thomas
SEC insider (Form 3/4/5 filer). CIK 0002034388. Chief Growth Officer at Amentum Holdings, Inc. (AMTM). 10 reported Form 4/5 transactions since Sep 2024; latest on May 6, 2026. Located in CHANTILLY, VA.
Companies Mullen Sean Thomas has filed insider reports for
- Amentum Holdings, Inc. (AMTM): Officer, Chief Growth Officer
Mullen Sean Thomas
CIK: 0002034388
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Amentum Holdings, Inc.
Discretionary Trading P&L
Holdings
Transaction History (10 total)
- May 6, 2026AMTM
Amentum Holdings, Inc.
Tax PaymentDirect2.8K shares at avg. $24.89$69K - May 6, 2026AMTM
Amentum Holdings, Inc.
ExerciseDirect9.1K shares- - Dec 17, 2025AMTM
Amentum Holdings, Inc.
ExerciseDirect9.3K shares- - Dec 17, 2025AMTM
Amentum Holdings, Inc.
Tax PaymentDirect4.2K shares at avg. $28.67$120K - Nov 17, 2025AMTM
Amentum Holdings, Inc.
AwardDirect17.8K shares- - Nov 6, 2025AMTM
Amentum Holdings, Inc.
Tax PaymentDirect1.6K shares at avg. $21.79$35K - Nov 6, 2025AMTM
Amentum Holdings, Inc.
ExerciseDirect4.8K shares- - Dec 20, 2024AMTM
Amentum Holdings, Inc.
AwardDirectRestricted Stock Units
9.3K shares- - Nov 6, 2024AMTM
Amentum Holdings, Inc.
AwardDirectRestricted Stock Units
18.1K shares- - Nov 6, 2024AMTM
Amentum Holdings, Inc.
AwardDirectRestricted Stock Units
14.5K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| May 6, 2026 | AMTM Amentum Holdings, Inc. | Tax Payment | 2,762 | $24.89 | $68,746 | Direct |
| May 6, 2026 | AMTM Amentum Holdings, Inc. | Exercise | 9,072 | - | $0 | Direct |
| Dec 17, 2025 | AMTM Amentum Holdings, Inc. | Exercise | 9,298 | - | - | Direct |
| Dec 17, 2025 | AMTM Amentum Holdings, Inc. | Tax Payment | 4,194 | $28.67 | $120,242 | Direct |
| Nov 17, 2025 | AMTM Amentum Holdings, Inc. | Award | 17,817 | - | - | Direct |
| Nov 6, 2025 | AMTM Amentum Holdings, Inc. | Tax Payment | 1,621 | $21.79 | $35,322 | Direct |
| Nov 6, 2025 | AMTM Amentum Holdings, Inc. | Exercise | 4,838 | - | - | Direct |
| Dec 20, 2024 | AMTM Amentum Holdings, Inc. | Award Restricted Stock Units | 9,298 | - | - | Direct |
| Nov 6, 2024 | AMTM Amentum Holdings, Inc. | Award Restricted Stock Units | 18,145 | - | - | Direct |
| Nov 6, 2024 | AMTM Amentum Holdings, Inc. | Award Restricted Stock Units | 14,516 | - | - | Direct |
1-10 of 10 transactions