Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Amentum Holdings, Inc.AMTM · Entity 3920 | Chief Growth Officer | May 06, 2026 | May 07, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Amentum Holdings, Inc.
Report date May 06, 2026 · Filed May 07, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 32,448 |
Ending reported balance
After 2026-05-06 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2026-05-06 · Exercise / conversion · Acquired 9,072 · Balance 35,210 F1: Represents distribution of AMTM common stock upon vesting of restricted stock units. Row 2 · 2026-05-06 · Tax withholding · Disposed 2,762 · Balance 32,448 F2: Represents number of shares of AMTM common stock tendered for tax withholding upon vesting of restricted stock. |
| Restricted Stock UnitsSEC Table II · derivative / convertible security | Direct | 9,073 |
Reported balance
After 2026-05-06 transaction · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · 2026-05-06 · Exercise / conversion · Disposed 9,072 · Balance 9,073 F3: Each restricted stock unit represents a contingent right to receive one share of AMTM common stock. F4: One-half of the restricted stock units shall vest and be delivered on the 18th month and three-year anniversaries of the date of grant. |
Filing footnotes · ownership attribution and instrument terms
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.
F3: Each restricted stock unit represents a contingent right to receive one share of AMTM common stock.
F4: One-half of the restricted stock units shall vest and be delivered on the 18th month and three-year anniversaries of the date of grant.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 06, 2026 Filed May 7, 2026 20:31 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Exercise / conversionRestricted Stock Units · Derivative | 9,072 | $0.00 | $0.00 |
DisclosureSEC source: 0002011286-26-000020 · wk-form4_1778185904.xml · derivative · entry 3 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,073 Underlying: Common Stock · 9,072 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of AMTM common stock. F4 · derivative.exercise_date: One-half of the restricted stock units shall vest and be delivered on the 18th month and three-year anniversaries of the date of grant. F4 · derivative.expiration_date: One-half of the restricted stock units shall vest and be delivered on the 18th month and three-year anniversaries of the date of grant. Read SEC document |
| May 06, 2026 Filed May 7, 2026 20:31 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Tax withholdingCommon Stock | 2,762 | $24.89 | $68,746.18 |
DisclosureSEC source: 0002011286-26-000020 · wk-form4_1778185904.xml · nonDerivative · entry 2 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 32,448 F2 · shares: Represents number of shares of AMTM common stock tendered for tax withholding upon vesting of restricted stock. Read SEC document |
| May 06, 2026 Filed May 7, 2026 20:31 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Exercise / conversionCommon Stock | 9,072 | Not disclosed | Not disclosed |
DisclosureSEC source: 0002011286-26-000020 · wk-form4_1778185904.xml · nonDerivative · entry 1 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 35,210 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Represents distribution of AMTM common stock upon vesting of restricted stock units. Read SEC document |
| December 17, 2025 Filed Dec 19, 2025 21:19 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Exercise / conversionRestricted Stock Units · Derivative | 9,298 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-058286 · wk-form4_1766179141.xml · derivative · entry 3 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 9,298 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of AMTM common stock. F1 · kind: Represents distribution of AMTM common stock upon vesting of restricted stock units. F4 · derivative.exercise_date: The restricted stock units awarded vested on December 17, 2025. F4 · derivative.expiration_date: The restricted stock units awarded vested on December 17, 2025. Read SEC document |
| December 17, 2025 Filed Dec 19, 2025 21:19 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Tax withholdingCommon Stock | 4,194 | $28.67 | $120,241.98 |
DisclosureSEC source: 0001628280-25-058286 · wk-form4_1766179141.xml · nonDerivative · entry 2 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 26,138 F2 · shares: Represents number of shares of AMTM common stock tendered for tax withholding upon vesting of restricted stock units. Read SEC document |
| December 17, 2025 Filed Dec 19, 2025 21:19 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Exercise / conversionCommon Stock | 9,298 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-25-058286 · wk-form4_1766179141.xml · nonDerivative · entry 1 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 30,332 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Represents distribution of AMTM common stock upon vesting of restricted stock units. Read SEC document |
| November 17, 2025 Filed Nov 19, 2025 22:53 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | GrantCommon Stock | 17,817 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-053285 · wk-form4_1763592827.xml · nonDerivative · entry 1 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 21,034 F1 · shares: One-third of the restricted stock units shall vest on each of the first, second and third anniversaries of November 17, 2025. Read SEC document |
| November 06, 2025 Filed Nov 10, 2025 21:44 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Exercise / conversionRestricted Stock Units · Derivative | 4,838 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-25-051113 · wk-form4_1762811081.xml · derivative · entry 3 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,678 Underlying: Common Stock · 4,838 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of AMTM common stock. F1 · kind: Represents distribution of AMTM common stock upon vesting of restricted stock units. F4 · derivative.exercise_date: The restricted stock units awarded vested on November 6, 2025. F4 · derivative.expiration_date: The restricted stock units awarded vested on November 6, 2025. Read SEC document |
| November 06, 2025 Filed Nov 10, 2025 21:44 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Tax withholdingCommon Stock | 1,621 | $21.79 | $35,321.59 |
DisclosureSEC source: 0001628280-25-051113 · wk-form4_1762811081.xml · nonDerivative · entry 2 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,217 F2 · shares: Represents number of shares of AMTM common stock tendered for tax withholding upon vesting of restricted stock units. Read SEC document |
| November 06, 2025 Filed Nov 10, 2025 21:44 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | Exercise / conversionCommon Stock | 4,838 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-25-051113 · wk-form4_1762811081.xml · nonDerivative · entry 1 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,838 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Represents distribution of AMTM common stock upon vesting of restricted stock units. Read SEC document |
| December 20, 2024 Filed Dec 23, 2024 22:55 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | GrantRestricted Stock Units · Derivative | 9,298 | $0.00 | $0.00 |
DisclosureSEC source: 0002011286-24-000074 · wk-form4_1734994527.xml · derivative · entry 1 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,298 Underlying: Common Stock · 9,298 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of AMTM common stock. F2 · derivative.exercise_date: The restricted stock units shall vest on December 17, 2025. F2 · derivative.expiration_date: The restricted stock units shall vest on December 17, 2025. Read SEC document |
| November 06, 2024 Filed Nov 8, 2024 21:16 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | GrantRestricted Stock Units · Derivative | 14,516 | $0.00 | $0.00 |
DisclosureSEC source: 0002011286-24-000031 · wk-form4_1731100277.xml · derivative · entry 2 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 14,516 Underlying: Common Stock · 14,516 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of AMTM common stock. F3 · derivative.exercise_date: One-third of the restricted stock units shall vest on each of the first, second and third anniversaries of the date of grant. F3 · derivative.expiration_date: One-third of the restricted stock units shall vest on each of the first, second and third anniversaries of the date of grant. Read SEC document |
| November 06, 2024 Filed Nov 8, 2024 21:16 UTC | Amentum Holdings, Inc. AMTM · Entity 3920 | GrantRestricted Stock Units · Derivative | 18,145 | $0.00 | $0.00 |
DisclosureSEC source: 0002011286-24-000031 · wk-form4_1731100277.xml · derivative · entry 1 Mullen Sean Thomas · CIK 0002034388 · Chief Growth Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,145 Underlying: Common Stock · 18,145 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of AMTM common stock. F2 · derivative.exercise_date: One-half of the restricted stock units shall vest on the 18th month and three-year anniversaries of the date of grant. F2 · derivative.expiration_date: One-half of the restricted stock units shall vest on the 18th month and three-year anniversaries of the date of grant. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.