Mullen Sean Thomas — SEC Form 4 filings
SEC reporting owner CIK 2034388. 6 Form 4 filings on record with FilingPulse; latest filed 2026-05-07.
Transaction summary — filings shown
Covers all 6 filings on record, filed 2024-11-08 to 2026-05-07. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 13.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Amentum Holdings, Inc. (AMTM) | Chief Growth Officer | 6 | — | — | 13 |
Form 4 filings — Mullen Sean Thomas
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-05-07 | 4 | Amentum Holdings, Inc. (AMTM) | Option exercise (M): 9,072 · Tax withholding (F): 2,762 @ $24.89 · Option exercise (M): 9,072 (derivative) @ $0 | EDGAR |
| 2025-12-19 | 4 | Amentum Holdings, Inc. (AMTM) | Option exercise (M): 9,298 · Tax withholding (F): 4,194 @ $28.67 · Option exercise (M): 9,298 (derivative) @ $0 | EDGAR |
| 2025-11-19 | 4 | Amentum Holdings, Inc. (AMTM) | Grant/award (A): 17,817 @ $0 | EDGAR |
| 2025-11-10 | 4 | Amentum Holdings, Inc. (AMTM) | Option exercise (M): 4,838 · Tax withholding (F): 1,621 @ $21.79 · Option exercise (M): 4,838 (derivative) @ $0 | EDGAR |
| 2024-12-23 | 4 | Amentum Holdings, Inc. (AMTM) | Grant/award (A): 9,298 (derivative) @ $0 | EDGAR |
| 2024-11-08 | 4 | Amentum Holdings, Inc. (AMTM) | Grant/award (A): 18,145 (derivative) @ $0 · Grant/award (A): 14,516 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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