DEMETRIOU STEVEN J. - Insider Non-Derivative Transactions at Amentum Holdings, Inc. (AMTM) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Nov 17, 2025, DEMETRIOU STEVEN J.'s relationship to Amentum Holdings, Inc. (AMTM) is Director,Officer (Executive Chair), and currently has 820,476 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other AMTM insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

DEMETRIOU STEVEN J. - Insider Non-Derivative Transactions of AMTM Common Stock

DEMETRIOU STEVEN J. - Insider Non-Derivative Transactions at AMTM

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Nov 18, 2025	F -- (Common Stock)	17077	21.49	709121
Nov 18, 2025	M -- (Common Stock)	43396	0	726198
Nov 18, 2025	Acquisition -- (Common Stock)	111355	0	820476
Nov 7, 2025	F -- (Common Stock)	28818	21.79	682802
Nov 7, 2025	M -- (Common Stock)	90727	0	711620
Feb 13, 2025	P -- (Common Stock)	100000	20.81	620893
Sep 19, 2024	J -- (Common Stock)	520893	0	520893