Latest Insider Transactions at Amentum Holdings, Inc. (AMTM)
This section provides a real-time view of insider transactions for Amentum Holdings, Inc. (AMTM). The data is sourced from Form 4 filings with the SEC, which are filed by insiders of Amentum Holdings, Inc. to disclose their transactions in the company's securities. By reviewing this information, investors can gain insights into the trading activity of Amentum Holdings, Inc.'s insiders and make more informed investment decisions.
Insider Transaction List
| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Nov 17
2025
|
Jill L Bruning Chief Technology Officer |
BUY
Grant, award, or other acquisition
|
Direct |
17,817
+45.67%
|
-
|
|
Nov 17
2025
|
John E. Heller Chief Executive Officer |
BUY
Grant, award, or other acquisition
|
Direct |
155,897
+36.65%
|
-
|
|
Nov 17
2025
|
Sean Thomas Mullen Chief Growth Officer |
BUY
Grant, award, or other acquisition
|
Direct |
17,817
+45.86%
|
-
|
|
Nov 17
2025
|
Travis Barton Johnson Chief Financial Officer |
BUY
Grant, award, or other acquisition
|
Direct |
100,220
+47.98%
|
-
|
|
Nov 17
2025
|
Darren Burton Chief People Officer |
BUY
Grant, award, or other acquisition
|
Direct |
22,271
+50.0%
|
-
|
|
Nov 17
2025
|
Mary Michele T St. Chief Legal Officer & GC |
BUY
Grant, award, or other acquisition
|
Direct |
22,271
+50.0%
|
-
|
|
Nov 17
2025
|
Stephen A Arnette Chief Operating Officer |
BUY
Grant, award, or other acquisition
|
Direct |
46,769
+33.29%
|
-
|
|
Nov 17
2025
|
Stephen A Arnette Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
287
-0.61%
|
$6,027
$21.49 P/Share
|
|
Nov 17
2025
|
Stephen A Arnette Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
1,178
+2.43%
|
-
|
|
Nov 17
2025
|
Steven J. Demetriou Executive Chair |
BUY
Grant, award, or other acquisition
|
Direct |
111,355
+11.95%
|
-
|
|
Nov 17
2025
|
Steven J. Demetriou Executive Chair |
SELL
Payment of exercise price or tax liability
|
Direct |
17,077
-2.35%
|
$358,617
$21.49 P/Share
|
|
Nov 17
2025
|
Steven J. Demetriou Executive Chair |
BUY
Exercise of conversion of derivative security
|
Direct |
43,396
+5.64%
|
-
|
|
Nov 16
2025
|
Stephen A Arnette Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,248
-2.48%
|
$71,456
$22.07 P/Share
|
|
Nov 16
2025
|
Stephen A Arnette Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
13,330
+9.21%
|
-
|
|
Nov 15
2025
|
Stephen A Arnette Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
1,403
-3.75%
|
$30,866
$22.07 P/Share
|
|
Nov 15
2025
|
Stephen A Arnette Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
5,758
+13.35%
|
-
|
|
Nov 06
2025
|
John E. Heller Chief Executive Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
17,868
-13.6%
|
$375,228
$21.79 P/Share
|
|
Nov 06
2025
|
John E. Heller Chief Executive Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
39,617
+23.16%
|
-
|
|
Nov 06
2025
|
Jill L Bruning Chief Technology Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
1,457
-30.12%
|
$30,597
$21.79 P/Share
|
|
Nov 06
2025
|
Jill L Bruning Chief Technology Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
4,838
+50.0%
|
-
|
|
Nov 06
2025
|
Travis Barton Johnson Chief Financial Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,642
-30.11%
|
$76,482
$21.79 P/Share
|
|
Nov 06
2025
|
Travis Barton Johnson Chief Financial Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
12,097
+50.0%
|
-
|
|
Nov 06
2025
|
Stephen A Arnette Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
3,093
-8.91%
|
$64,953
$21.79 P/Share
|
|
Nov 06
2025
|
Stephen A Arnette Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
12,701
+26.78%
|
-
|
|
Nov 06
2025
|
Steven J. Demetriou Executive Chair |
SELL
Payment of exercise price or tax liability
|
Direct |
28,818
-4.05%
|
$605,178
$21.79 P/Share
|
|
Nov 06
2025
|
Steven J. Demetriou Executive Chair |
BUY
Exercise of conversion of derivative security
|
Direct |
90,727
+11.31%
|
-
|
|
Nov 06
2025
|
Sean Thomas Mullen Chief Growth Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
1,621
-33.51%
|
$34,041
$21.79 P/Share
|
|
Nov 06
2025
|
Sean Thomas Mullen Chief Growth Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
4,838
+50.0%
|
-
|
|
May 08
2025
|
Goldberg 2014 LLC > 10% Shareholder |
BUY
Other acquisition or disposition
|
Indirect |
1,132,839
+2.45%
|
-
|
|
May 08
2025
|
Alan E Goldberg Director |
BUY
Other acquisition or disposition
|
Indirect |
1,132,839
+2.45%
|
-
|
|
May 08
2025
|
Lindsay Goldberg Employee Co Inv. Iv L.P. > 10% Shareholder |
BUY
Other acquisition or disposition
|
Indirect |
1,132,839
+2.45%
|
-
|
|
May 08
2025
|
Amentum Joint Venture Gp LLC |
SELL
Other acquisition or disposition
|
Indirect |
2,433,022
-100.0%
|
-
|
|
Apr 07
2025
|
Amentum Joint Venture Gp LLC |
BUY
Grant, award, or other acquisition
|
Indirect |
2,433,022
+50.0%
|
-
|
|
Mar 13
2025
|
Jacobs Solutions Inc. |
SELL
Other acquisition or disposition
|
Indirect |
19,464,174
-100.0%
|
-
|
|
Mar 05
2025
|
Ralph E Eberhart Director |
BUY
Exercise of conversion of derivative security
|
Direct |
3,447
+10.34%
|
-
|
|
Mar 05
2025
|
Sandra E. Rowland Director |
BUY
Exercise of conversion of derivative security
|
Direct |
3,447
+50.0%
|
-
|
|
Mar 05
2025
|
Vincent K Brooks Director |
BUY
Exercise of conversion of derivative security
|
Direct |
3,447
+24.87%
|
-
|
|
Mar 05
2025
|
John C. Vollmer Director |
BUY
Exercise of conversion of derivative security
|
Direct |
3,447
+0.87%
|
-
|
|
Mar 05
2025
|
Susan Leslie Ireland Director |
BUY
Exercise of conversion of derivative security
|
Direct |
3,447
+50.0%
|
-
|
|
Mar 04
2025
|
Stephen A Arnette Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
152
-0.69%
|
$2,736
$18.71 P/Share
|
|
Mar 04
2025
|
Stephen A Arnette Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
521
+2.3%
|
-
|
|
Mar 03
2025
|
Stephen A Arnette Chief Operating Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
365
-1.66%
|
$6,935
$19.64 P/Share
|
|
Mar 03
2025
|
Stephen A Arnette Chief Operating Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
1,230
+5.29%
|
-
|
|
Feb 18
2025
|
Barbara Loughran Director |
BUY
Open market or private purchase
|
Direct |
4,600
+50.0%
|
$96,600
$21.23 P/Share
|
|
Feb 12
2025
|
Steven J. Demetriou Executive Chair |
BUY
Open market or private purchase
|
Direct |
100,000
+13.87%
|
$2,000,000
$20.81 P/Share
|
|
Dec 17
2024
|
John C. Vollmer Director |
BUY
Other acquisition or disposition
|
Direct |
391,341
+50.0%
|
-
|
|
Dec 17
2024
|
John E. Heller Chief Executive Officer |
BUY
Other acquisition or disposition
|
Direct |
91,794
+50.0%
|
-
|
|
Dec 17
2024
|
Alan E Goldberg Director |
BUY
Other acquisition or disposition
|
Indirect |
43,893,904
+50.0%
|
-
|
|
Dec 17
2024
|
Amentum Joint Venture Gp LLC |
SELL
Other acquisition or disposition
|
Indirect |
90,021,804
-100.0%
|
-
|
|
Sep 23
2024
|
Jacobs Solutions Inc. |
SELL
Other acquisition or disposition
|
Indirect |
124,084,108
-80.95%
|
-
|