According to recent filings covering the 90 days ending January 10, 2026, the three most significant insider holders at Mercury Systems are Director Partners Management, Lp Jana (4.97Mn shares), Director Partners Llc Jana (4.71Mn shares), President And Ceo Mark Aslett (508.86K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Partners Management, Lp Jana | 4,966,675 | 10 Nov, 2025 | |
| Partners Llc Jana | 4,711,386 | 22 Aug, 2023 | |
| Mark Aslett | President And Ceo | 508,858 | 23 Feb, 2023 |
| William L Ballhaus | Chairman And President & Ceo | 375,184 | 20 Aug, 2025 |
| Didier M C Thibaud | Evp And Coo | 245,917 | 18 Aug, 2021 |
| Michael Ruppert | Evp And Cfo And Treasurer | 202,553 | 21 Feb, 2023 |
| David E. Farnsworth | Evp And Cfo | 161,326 | 20 Aug, 2025 |
| Christopher C Cambria | Evp And Gen Counsel & Secretary | 135,721 | 26 Sep, 2023 |
| Charles Roger Iv Wells | Evp And Coo | 96,602 | 19 Feb, 2025 |
| Brian E Perry | Evp And President Processing | 87,913 | 22 Aug, 2022 |
| James Mitch Stevison | Evp And President Mission Systems | 86,859 | 17 Oct, 2023 |
| Michael A Daniels | 81,366 | 29 Oct, 2021 | |
| Stuart Kupinsky | Evp And Clo & Corp Sec | 70,297 | 20 Aug, 2025 |
| James Bass | 67,634 | 29 Oct, 2021 | |
| Thomas Huber | Evp Chief Transformation Offic | 66,489 | 23 Feb, 2023 |
| Allen Couture | Evp And Execution Excellence | 65,727 | 19 Oct, 2023 |
| Orlando D Carvalho | 59,448 | 24 Oct, 2025 | |
| Christine Fox Harbison | Evp And Chief Growth Officer | 40,436 | 21 Aug, 2023 |
| Steven Ratner | Evp And Chro | 33,801 | 25 Aug, 2025 |
| Michelle M Mccarthy | Svp And Cao | 32,724 | 21 Dec, 2023 |
| Stephanie Georges | Evp And Cco | 32,259 | 21 Aug, 2024 |
| Howard L Lance | 32,104 | 24 Oct, 2025 | |
| Lisa S Disbrow | 31,236 | 24 Oct, 2025 | |
| Barry R Nearhos | 30,605 | 24 Oct, 2025 | |
| Mary L Krakauer | 19,360 | 28 Oct, 2022 | |
| Gerard J Demuro | 17,481 | 24 Oct, 2025 | |
| Debora A Plunkett | 16,833 | 10 Nov, 2025 | |
| Roger A Krone | 15,311 | 25 Oct, 2024 | |
| Douglas Munro | Svp And Cao | 14,678 | 13 Nov, 2025 |
| William K Obrien | 13,100 | 28 Oct, 2022 | |
| Jean A Bua | 7,815 | 24 Oct, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 12 Nov, 2025 | Douglas Munro | Common Stock | D | 1,329 | $73.42 | 14,678 | D | S |
| 07 Nov, 2025 | Debora A Plunkett | Common Stock | D | 1,700 | $73.99 | 16,833 | D | S |
| 06 Nov, 2025 | Partners Management, Lp Jana | Common Stock, par value $0.01 per share | D | 1,000,000 | $75.45 | 4,966,675 | I | S |
| 22 Oct, 2025 | Jean A Bua | Common Stock | A | 2,362 | $0.00 | 7,815 | D | A |
| 22 Oct, 2025 | Howard L Lance | Common Stock | A | 2,362 | $0.00 | 32,104 | D | A |
| 22 Oct, 2025 | Gerard J Demuro | Common Stock | A | 2,362 | $0.00 | 17,481 | D | A |
| 22 Oct, 2025 | Orlando D Carvalho | Common Stock | A | 2,362 | $0.00 | 59,448 | D | A |
| 22 Oct, 2025 | Barry R Nearhos | Common Stock | A | 2,362 | $0.00 | 30,605 | D | A |
| 22 Oct, 2025 | Debora A Plunkett | Common Stock | A | 2,362 | $0.00 | 18,533 | D | A |
| 22 Oct, 2025 | Lisa S Disbrow | Common Stock | A | 2,362 | $0.00 | 31,236 | D | A |
| 22 Oct, 2025 | Partners Management, Lp Jana | Common Stock, par value $0.01 per share | A | 2,362 | $0.00 | 5,966,675 | I | A |
| 16 Oct, 2025 | Barry R Nearhos | Common Stock | A | 487 | $0.00 | 28,243 | D | A |
| 16 Sep, 2025 | Douglas Munro | Common Stock | D | 67 | $73.40 | 16,007 | D | S |
| 20 Aug, 2025 | Steven Ratner | Common Stock | D | 7,000 | $63.76 | 33,801 | D | S |
| 19 Aug, 2025 | Stuart Kupinsky | Common Stock | D | 1,220 | $64.46 | 70,297 | D | S |
| 19 Aug, 2025 | William L Ballhaus | Common Stock | D | 13,050 | $64.46 | 374,976 | D | S |
| 19 Aug, 2025 | David E. Farnsworth | Common Stock | D | 7,572 | $64.46 | 161,326 | D | S |
| 19 Aug, 2025 | Steven Ratner | Common Stock | D | 1,735 | $64.46 | 40,801 | D | S |
| 19 Aug, 2025 | Steven Ratner | - | - | 40,801 | D | |||
| 19 Aug, 2025 | Douglas Munro | Common Stock | D | 376 | $64.46 | 16,074 | D | S |