Steven J. Demetriou Amentum Holdings, Inc. (AMTM) insider trading activity

Shares Held (Direct Ownership) 709K

14.21% 3M change

36.14% 12M change

Total Value Held N/A

STEVEN J. DEMETRIOU Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 17 2025	SELL Payment of exercise price or tax liability	$366,984 $21.49 p/Share	17,077 Reduced 2.35%	709,121 Common Stock
Nov 17 2025	BUY Exercise of conversion of derivative security	-	43,396 Added 5.64%	726,198 Common Stock
Nov 17 2025	BUY Grant, award, or other acquisition	-	111,355 Added 11.95%	820,476 Common Stock
Nov 06 2025	SELL Payment of exercise price or tax liability	$627,944 $21.79 p/Share	28,818 Reduced 4.05%	682,802 Common Stock
Nov 06 2025	BUY Exercise of conversion of derivative security	-	90,727 Added 11.31%	711,620 Common Stock
Feb 12 2025	BUY Open market or private purchase	$2,080,999 $20.81 p/Share	100,000 Added 13.87%	620,893 Common Stock
Sep 18 2024	BUY Other acquisition or disposition	-	520,893 Added 50.0%	520,893 Common Stock

FIRSTENERGY CORP Utilities

Director

JACOBS ENGINEERING GROUP INC Industrials

EXECUTIVE CHAIR

ACA

Arcosa, Inc. Industrials

Director

SJD

Executive Chair

Akron, OH

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