Amentum Holdings Inc.

Last updated September 27, 2026

Organization details

Legal name
Amentum Holdings Inc.
Ownership
Public
Status
Active
Headquarters country
United States
Ticker symbol
AMTM
Primary stock exchange
NYSE

Identifiers

SEC CIK
0002011286

Board of directors

Chief executives

Robert Pragada V · Chief Executive Officer
Since September 2024
John E. Heller · Chief Executive Officer
Since September 2024

Board connections

9 of this board's directors also sit on 11 other boards.

Network of Amentum Holdings Inc.'s board connections Jacobs Solutions Inc. Jacobs Solutions Inc. Arcosa Inc. Arcosa Inc. Armstrong World Industries Inc Armstrong World Indust... Citigroup Inc. Citigroup Inc. Diamondback Energy Inc. Diamondback Energy Inc... Eaton Corporation PLC Eaton Corporation PLC FirstEnergy Corp. FirstEnergy Corp. ITT Inc. ITT Inc. Oshkosh Corporation (Holding Company)Common Stock Oshkosh Corporation (H... VSE Corporation VSE Corporation Verisk Analytics Inc. Verisk Analytics Inc. Barbara Loughran Barbara Loughran Christopher M.t. Thompson Christopher M.t. Tho... Kevin C. Berryman Kevin C. Berryman Ralph E. Eberhart Ralph E. Eberhart Robert Pragada V Robert Pragada V Sandra E. Rowland Sandra E. Rowland Steven J. Demetriou Steven J. Demetriou Susan Leslie Ireland Susan Leslie Ireland Vincent K. Brooks Vincent K. Brooks Amentum Holdings Inc.
Shared director Other board Same sector

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months
$0
0 purchases by 0 insiders
Sold, last 12 months
$0
0 sales by 0 insiders
Date Insider Transaction Shares Price Value
Mar 13, 2025 JACOBS ENGINEERING GROUP INC /DE/ 10% owner Other −19,464,174 — —
Mar 5, 2025 Susan Leslie Ireland Director Option exercise +3,447 — —
Mar 5, 2025 Sandra E. Rowland Director Option exercise +3,447 — —
Mar 5, 2025 John C. Vollmer Director Option exercise +3,447 — —
Mar 5, 2025 Vincent K. Brooks Director Option exercise +3,447 — —
Mar 5, 2025 Ralph E. Eberhart Director Option exercise +3,447 — —
Mar 4, 2025 Stephen A. Arnette Officer (Chief Operating Officer) Option exercise +521 — —
Mar 4, 2025 Stephen A. Arnette Officer (Chief Operating Officer) Shares withheld for tax −152 $18.71 $2,844
Mar 3, 2025 Stephen A. Arnette Officer (Chief Operating Officer) Option exercise +1,230 — —
Mar 3, 2025 Stephen A. Arnette Officer (Chief Operating Officer) Shares withheld for tax −365 $19.64 $7,169
Feb 18, 2025 Barbara Loughran Director Open-market purchase +4,600 $21.23 $97,658
Feb 12, 2025 Steven J. Demetriou Director, Officer (Executive Chair) Open-market purchase +100,000 $20.81 $2,081,000
Dec 17, 2024 Alan E. Goldberg Director, 10% owner Other +43,893,904 — —
Dec 17, 2024 Amentum Joint Venture GP LLC Director, 10% owner Other −90,021,804 — —
Dec 17, 2024 John C. Vollmer Director Other +391,341 — —

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