36 insiders reported 104 Form 4 transactions for Amentum Holdings, Inc. (AMTM) over the past 18 months (most recent 2026-05-07). Recent activity: Johnson Travis Barton (Chief Financial Officer) Buy 13,609 shares, Heller John E. (Chief Executive Officer) Buy 18,145 shares, Arnette Stephen A (Chief Operating Officer) Buy 13,609 shares, Mullen Sean Thomas (Chief Growth Officer) Buy 9,072 shares, Bruning Jill L (Chief Technology Officer) Buy 9,072 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-07 | Johnson Travis Barton | Chief Financial Officer | Buy | 13,609 | $0 |
| 2026-05-07 | Heller John E. | Chief Executive Officer | Buy | 18,145 | $0 |
| 2026-05-07 | Arnette Stephen A | Chief Operating Officer | Buy | 13,609 | $0 |
| 2026-05-07 | Mullen Sean Thomas | Chief Growth Officer | Buy | 9,072 | $0 |
| 2026-05-07 | Bruning Jill L | Chief Technology Officer | Buy | 9,072 | $0 |
| 2026-05-07 | Heller John E. | Chief Executive Officer | Sell | 8,184 | $203,700 |
| 2026-05-07 | Johnson Travis Barton | Chief Financial Officer | Sell | 4,097 | $101,974 |
| 2026-05-07 | Arnette Stephen A | Chief Operating Officer | Sell | 3,314 | $82,485 |
| 2026-05-07 | Mullen Sean Thomas | Chief Growth Officer | Sell | 2,762 | $68,746 |
| 2026-05-07 | Bruning Jill L | Chief Technology Officer | Sell | 2,731 | $67,975 |
| 2026-03-05 | Bruning Jill L | Chief Technology Officer | Sell | 30,000 | $0 |
| 2026-03-04 | Arnette Stephen A | Chief Operating Officer | Sell | 750 | $23,025 |
| 2026-03-04 | Arnette Stephen A | Chief Operating Officer | Buy | 2,808 | $0 |
| 2026-02-18 | St. Mary Michele T | Chief Legal Officer & GC | Buy | 7,080 | $0 |
| 2026-02-18 | St. Mary Michele T | Chief Legal Officer & GC | Sell | 2,308 | $69,355 |
| 2026-02-10 | Rowland Sandra E. | Director | Buy | 11,564 | $0 |
| 2026-02-10 | Rowland Sandra E. | Director | Buy | 5,062 | $0 |
| 2026-02-10 | Vollmer John C. | Director | Buy | 11,564 | $0 |
| 2026-02-10 | Brooks Vincent K | Director | Buy | 11,564 | $0 |
| 2026-02-10 | Loughran Barbara | Director | Buy | 5,062 | $0 |
| 2026-02-10 | IRELAND SUSAN LESLIE | Director | Buy | 5,062 | $0 |
| 2026-02-10 | Thompson Christopher M.T. | Director | Buy | 5,062 | $0 |
| 2026-02-10 | EBERHART RALPH E | Director | Buy | 11,564 | $0 |
| 2026-02-10 | EBERHART RALPH E | Director | Buy | 5,062 | $0 |
| 2026-02-10 | Vollmer John C. | Director | Buy | 5,062 | $0 |
Source: SEC Form 4 filings · as of 2026-05-07