Arnette Stephen A (CIK 1919492) reported 17 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-07). Recent activity: Buy AMTM (13,609 shares), Sell AMTM (3,314 shares), Buy AMTM (2,808 shares), Sell AMTM (750 shares), Buy AMTM (1,178 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-07 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 13,609 | $0 |
| 2026-05-07 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Sell | 3,314 | $82,485 |
| 2026-03-04 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 2,808 | $0 |
| 2026-03-04 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Sell | 750 | $23,025 |
| 2025-11-19 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 1,178 | $0 |
| 2025-11-19 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Sell | 287 | $6,168 |
| 2025-11-19 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 46,769 | $0 |
| 2025-11-18 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 5,758 | $0 |
| 2025-11-18 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Sell | 1,403 | $30,964 |
| 2025-11-18 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 5,053 | $0 |
| 2025-11-18 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Sell | 1,231 | $27,168 |
| 2025-11-18 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 3,681 | $0 |
| 2025-11-18 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Sell | 897 | $19,797 |
| 2025-11-18 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 4,596 | $0 |
| 2025-11-18 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Sell | 1,120 | $24,718 |
| 2025-11-10 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Buy | 12,701 | $0 |
| 2025-11-10 | Amentum Holdings, Inc. (AMTM) | Chief Operating Officer | Sell | 3,093 | $67,396 |
来源：SEC Form 4 申报文件 · 截至 2026-05-07