Based on data from the past 90 days ending February 19, 2026, Amentum Holdings's three largest insider shareholders are TenPercentOwner Goldberg Employee Co-Inv. Iv L.P. Lindsay (45.03Mn shares), TenPercentOwner 2014 Llc Goldberg (45.03Mn shares), Director Alan E Goldberg (45.03Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Goldberg Employee Co-Inv. Iv L.P. Lindsay | 45,026,743 | 12 May, 2025 | |
| Alan E Goldberg | 45,026,743 | 12 May, 2025 | |
| 2014 Llc Goldberg | 45,026,743 | 12 May, 2025 | |
| Solutions Inc. Jacobs | 29,196,261 | 25 Sep, 2024 | |
| Steven J. Demetriou | Executive Chair | 820,476 | 19 Nov, 2025 |
| John C. Vollmer | 429,842 | 10 Feb, 2026 | |
| John E. Heller | Chief Executive Officer | 366,058 | 29 Jan, 2026 |
| Travis Barton Johnson | Chief Financial Officer | 108,675 | 19 Nov, 2025 |
| Stephen A Arnette | Chief Operating Officer | 93,725 | 19 Nov, 2025 |
| Ralph E Eberhart | 48,120 | 10 Feb, 2026 | |
| Vincent K Brooks | 27,462 | 10 Feb, 2026 | |
| Sean Thomas Mullen | Chief Growth Officer | 26,138 | 19 Dec, 2025 |
| Darren Burton | Chief People Officer | 23,600 | 09 Dec, 2025 |
| Mary Michele T St. | Chief Legal Officer & Gc | 22,271 | 19 Nov, 2025 |
| Jill L Bruning | Chief Technology Officer | 21,198 | 19 Nov, 2025 |
| Sandra E. Rowland | 20,073 | 10 Feb, 2026 | |
| Barbara Loughran | 9,662 | 10 Feb, 2026 | |
| Susan Leslie Ireland | 8,509 | 10 Feb, 2026 | |
| Christopher M.T. Thompson | 5,062 | 10 Feb, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 06 Feb, 2026 | Ralph E Eberhart | Common Stock | A | 11,564 | - | 43,058 | D | M |
| 06 Feb, 2026 | Ralph E Eberhart | Common Stock | A | 5,062 | $0.00 | 48,120 | D | A |
| 06 Feb, 2026 | Christopher M.T. Thompson | Common Stock | A | 5,062 | $0.00 | 5,062 | D | A |
| 06 Feb, 2026 | Sandra E. Rowland | Common Stock | A | 5,062 | $0.00 | 20,073 | D | A |
| 06 Feb, 2026 | Sandra E. Rowland | Common Stock | A | 11,564 | - | 15,011 | D | M |
| 06 Feb, 2026 | Susan Leslie Ireland | Common Stock | A | 5,062 | $0.00 | 8,509 | D | A |
| 06 Feb, 2026 | John C. Vollmer | Common Stock | A | 5,062 | $0.00 | 429,842 | D | A |
| 06 Feb, 2026 | John C. Vollmer | Common Stock | A | 11,564 | - | 424,780 | D | M |
| 06 Feb, 2026 | Barbara Loughran | Common Stock | A | 5,062 | $0.00 | 9,662 | D | A |
| 06 Feb, 2026 | Vincent K Brooks | Common Stock | A | 5,062 | $0.00 | 27,462 | D | A |
| 06 Feb, 2026 | Vincent K Brooks | Common Stock | A | 11,564 | - | 22,400 | D | M |
| 28 Jan, 2026 | John E. Heller | Common Stock | D | 19,768 | $35.71 | 366,058 | D | F |
| 28 Jan, 2026 | John E. Heller | Common Stock | A | 51,979 | - | 385,826 | D | M |
| 17 Dec, 2025 | Sean Thomas Mullen | Common Stock | D | 4,194 | $28.67 | 26,138 | D | F |
| 17 Dec, 2025 | Sean Thomas Mullen | Common Stock | A | 9,298 | - | 30,332 | D | M |
| 05 Dec, 2025 | Darren Burton | Common Stock | A | 2,721 | - | 24,992 | D | M |
| 05 Dec, 2025 | Darren Burton | - | - | 23,600 | D | |||
| 05 Dec, 2025 | Darren Burton | Common Stock | D | 1,392 | $28.88 | 23,600 | D | F |
| 17 Nov, 2025 | Steven J. Demetriou | Common Stock | A | 111,355 | $0.00 | 820,476 | D | A |
| 17 Nov, 2025 | Steven J. Demetriou | Common Stock | A | 43,396 | - | 726,198 | D | M |