34 insiders reported 86 Form 4 transactions for Amentum Holdings, Inc. (AMTM) over the past 18 months (most recent 2026-09-17). Recent activity: Thompson Christopher M.T. (Director) Sell 4,250 shares, Heller John E. (Chief Executive Officer) Buy 18,145 shares, Heller John E. (Chief Executive Officer) Sell 8,184 shares, Mullen Sean Thomas (Chief Growth Officer) Buy 9,072 shares, Mullen Sean Thomas (Chief Growth Officer) Sell 2,762 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | Thompson Christopher M.T. | Director | Sell | 4,250 | $0 |
| 2026-05-07 | Heller John E. | Chief Executive Officer | Buy | 18,145 | $0 |
| 2026-05-07 | Heller John E. | Chief Executive Officer | Sell | 8,184 | $203,700 |
| 2026-05-07 | Mullen Sean Thomas | Chief Growth Officer | Buy | 9,072 | $0 |
| 2026-05-07 | Mullen Sean Thomas | Chief Growth Officer | Sell | 2,762 | $68,746 |
| 2026-05-07 | Johnson Travis Barton | Chief Financial Officer | Buy | 13,609 | $0 |
| 2026-05-07 | Johnson Travis Barton | Chief Financial Officer | Sell | 4,097 | $101,974 |
| 2026-05-07 | Bruning Jill L | Chief Technology Officer | Buy | 9,072 | $0 |
| 2026-05-07 | Bruning Jill L | Chief Technology Officer | Sell | 2,731 | $67,975 |
| 2026-05-07 | Arnette Stephen A | Chief Operating Officer | Buy | 13,609 | $0 |
| 2026-05-07 | Arnette Stephen A | Chief Operating Officer | Sell | 3,314 | $82,485 |
| 2026-03-05 | Bruning Jill L | Chief Technology Officer | Sell | 30,000 | $0 |
| 2026-03-04 | Arnette Stephen A | Chief Operating Officer | Buy | 2,808 | $0 |
| 2026-03-04 | Arnette Stephen A | Chief Operating Officer | Sell | 750 | $23,025 |
| 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 | Vollmer John C. | Director | Buy | 5,062 | $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 |
来源：SEC Form 4 申报文件 · 截至 2026-09-17