January 28, 2026 · Form 4 insider transaction
Heller John E. sold 19,768 shares of Amentum Holdings, Inc. at $35.71 per share, a transaction worth $705.9K. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 1 day after the transaction.
Represents number of shares of AMTM common stock tendered for tax withholding upon vesting of restricted stock units.