Company · CIK 0002011286 · SIC 7389 — Services-Business Services, NEC · NYSE
Amentum Holdings, Inc. · AMTM
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 GForm 4 → | Sep 17, 9:35 pm EDT | Christopher M.T. ThompsonDirector | 4,250 | — | — | 5,750 | — | late |
Reported at this company — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.