Insider Shareholders with Direct Ownership of Amentum Holdings, Inc. (AMTM)
This section provides a comprehensive overview of the insiders with direct ownership of Amentum Holdings, Inc. (AMTM). You can find detailed information about the size and nature of each insider's ownership stake, as well as the latest updates on their holdings.
Amentum Holdings, Inc. Insider List
| Insider | Adquired | Disposed | Held | # of Trades | Last Transaction |
|---|---|---|---|---|---|
|
Steven J. Demetriou
Executive Chair |
866,371 | 45,895 | 820,476 | 6 |
Nov 17, 2025
Added 11.95%
|
|
John C. Vollmer
Director |
394,788 | 0 | 394,788 | 2 |
Mar 05, 2025
Added 0.87%
|
|
John E. Heller
Chief Executive Officer |
287,308 | 17,868 | 269,440 | 4 |
Nov 17, 2025
Added 36.65%
|
|
Travis Barton Johnson
Chief Financial Officer |
112,317 | 3,642 | 108,675 | 3 |
Nov 17, 2025
Added 47.98%
|
|
Stephen A Arnette
Chief Operating Officer |
102,273 | 8,548 | 93,725 | 13 |
Nov 17, 2025
Added 33.29%
|
|
Ralph E Eberhart
Director |
29,886 | 0 | 29,886 | 2 |
Mar 05, 2025
Added 10.34%
|
|
Sean Thomas Mullen
Chief Growth Officer |
31,953 | 5,815 | 26,138 | 5 |
Dec 17, 2025
Reduced 13.83%
|
|
Darren Burton
Chief People Officer |
24,992 | 1,392 | 23,600 | 3 |
Dec 05, 2025
Reduced 5.57%
|
|
Mary Michele T St.
Chief Legal Officer & GC |
22,271 | 0 | 22,271 | 1 |
Nov 17, 2025
Added 50.0%
|
|
Jill L Bruning
Chief Technology Officer |
22,655 | 1,457 | 21,198 | 3 |
Nov 17, 2025
Added 45.67%
|
|
Vincent K Brooks
Director |
10,413 | 0 | 10,413 | 2 |
Mar 05, 2025
Added 24.87%
|
|
Barbara Loughran
Director |
4,600 | 0 | 4,600 | 1 |
Feb 18, 2025
Added 50.0%
|
|
Susan Leslie Ireland
Director |
3,447 | 0 | 3,447 | 1 |
Mar 05, 2025
Added 50.0%
|
|
Sandra E. Rowland
Director |
3,447 | 0 | 3,447 | 1 |
Mar 05, 2025
Added 50.0%
|