Mercury Systems's top three insider shareholders as of May 23, 2026 are Partners Management, Lp Jana (Director, 6.55Mn shares), Partners Management, Lp Jana (Director, 5.97Mn shares), Partners Llc Jana (Director, 4.71Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Roger A Krone | - | 15,311 | 0 | 25 Oct, 2024 |
| Partners Llc Jana | - | 0 | 4,711,386 | 22 Aug, 2023 |
| Jean A Bua | - | 7,815 | 0 | 24 Oct, 2025 |
| William K Obrien | - | 13,100 | 0 | 28 Oct, 2022 |
| James Bass | - | 67,634 | 0 | 29 Oct, 2021 |
| Didier M C Thibaud | Evp, Coo | 245,917 | 0 | 18 Aug, 2021 |
| Howard L Lance | - | 27,272 | 0 | 27 Feb, 2026 |
| Gerard J Demuro | - | 17,481 | 0 | 24 Oct, 2025 |
| Mark Aslett | President And Ceo | 508,858 | 0 | 23 Feb, 2023 |
| Christopher C Cambria | Evp, Gen Counsel Secretary | 135,721 | 0 | 26 Sep, 2023 |
| Stuart Kupinsky | Evp, Clo Corp Sec | 68,010 | 0 | 19 Feb, 2026 |
| Michael A Daniels | - | 81,366 | 0 | 29 Oct, 2021 |
| William L Ballhaus | Chairman, President Ceo | 374,976 | 0 | 20 Aug, 2025 |
| Mary L Krakauer | - | 19,360 | 0 | 28 Oct, 2022 |
| Orlando D Carvalho | - | 59,448 | 0 | 24 Oct, 2025 |
| Stephanie Georges | Evp, Cco | 32,259 | 0 | 21 Aug, 2024 |
| Debora A Plunkett | - | 16,833 | 0 | 10 Nov, 2025 |
| Lisa S Disbrow | - | 31,236 | 0 | 24 Oct, 2025 |
| Michael Ruppert | Evp, Cfo And Treasurer | 202,553 | 0 | 21 Feb, 2023 |
| Michelle M Mccarthy | Svp, Cao | 32,724 | 0 | 21 Dec, 2023 |
| Brian E Perry | Evp, President Processing | 87,913 | 0 | 22 Aug, 2022 |
| Thomas Huber | Evp Chief Transformation Offic | 66,489 | 0 | 23 Feb, 2023 |
| James Mitch Stevison | Evp, President Mission Systems | 86,385 | 0 | 17 Oct, 2023 |
| Charles Roger Iv Wells | Evp, Coo | 95,928 | 0 | 19 Feb, 2025 |
| Christine Fox Harbison | Evp And Chief Growth Officer | 52,220 | 0 | 21 Aug, 2023 |
| Allen Couture | Evp, Execution Excellence | 65,222 | 0 | 19 Oct, 2023 |
| David E. Farnsworth | Evp, Cfo | 161,326 | 0 | 20 Aug, 2025 |
| Steven Ratner | Evp, Chro | 34,238 | 0 | 18 Mar, 2026 |
| Partners Management, Lp Jana | - | 0 | 6,553,120 | 13 Feb, 2024 |
| Douglas Munro | Svp, Cao | 14,328 | 0 | 19 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 |
|---|---|---|---|---|---|---|---|---|
| 16 Apr, 2026 | Barry R Nearhos | Common Stock | A | 245 | $0.00 | 31,324 | D | A |
| 16 Mar, 2026 | Steven Ratner | Common Stock | A | 437 | $0.00 | 34,238 | D | A |
| 16 Mar, 2026 | Steven Ratner | Common Stock | A | 437 | $0.00 | 34,238 | D | A |
| 16 Mar, 2026 | Steven Ratner | Common Stock | A | 437 | $0.00 | 34,238 | D | A |
| 02 Mar, 2026 | Partners Management, Lp Jana | Common Stock, par value $0.01 per share (Common Stock) | D | 182,510 | $94.05 | 4,384,165 | I | S |
| 03 Mar, 2026 | Partners Management, Lp Jana | Common Stock | D | 168,648 | $90.12 | 4,215,517 | I | S |
| 04 Mar, 2026 | Partners Management, Lp Jana | Common Stock | D | 100,899 | $89.68 | 4,114,618 | I | S |
| 25 Feb, 2026 | Howard L Lance | Common Stock | D | 4,832 | $88.98 | 27,272 | D | S |
| 17 Feb, 2026 | Douglas Munro | Common Stock | D | 582 | $83.56 | 14,328 | D | S |
| 17 Feb, 2026 | Douglas Munro | Common Stock | D | 582 | $83.56 | 14,328 | D | S |
| 17 Feb, 2026 | Stuart Kupinsky | Common Stock | D | 2,287 | $83.56 | 68,010 | D | S |
| 17 Feb, 2026 | Douglas Munro | Common Stock | D | 582 | $83.56 | 14,328 | D | S |
| 09 Feb, 2026 | Partners Management, Lp Jana | Common Stock, par value $0.01 per share | D | 400,000 | $81.00 | 4,566,675 | I | S |
| 15 Jan, 2026 | Barry R Nearhos | Common Stock | A | 474 | $0.00 | 31,079 | D | A |
| 12 Nov, 2025 | Douglas Munro | Common Stock | D | 1,329 | $73.42 | 14,678 | D | S |
| 12 Nov, 2025 | Douglas Munro | Common Stock | D | 1,329 | $73.42 | 14,678 | D | S |
| 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 |
| 07 Nov, 2025 | Debora A Plunkett | Common Stock | D | 1,700 | $73.99 | 16,833 | D | S |
| 07 Nov, 2025 | Debora A Plunkett | Common Stock | D | 1,700 | $73.99 | 16,833 | D | S |