MRCY (Mercury Systems Inc.)
Insider Trading Activity
Every open-market purchase and sale reported by MRCY officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-08 | Steven Ratner | EVP, CHRO | Sell | — | — |
| 2026-08-27 | William L Ballhaus | Chairman, President & CEO | MIXED | — | — |
| 2026-08-25 | Steven Ratner | EVP, CHRO | Sell | — | — |
| 2026-08-25 | STUART KUPINSKY | EVP, CLO & Corp Sec | Sell | — | — |
| 2026-08-25 | William L Ballhaus | Chairman, President & CEO | MIXED | — | — |
| 2026-08-21 | Douglas Munro | SVP, CAO | Sell | — | — |
| 2026-08-21 | Steven Ratner | EVP, CHRO | Sell | — | — |
| 2026-08-21 | STUART KUPINSKY | EVP, CLO & Corp Sec | Sell | — | — |
| 2026-08-21 | William L Ballhaus | Chairman, President & CEO | Sell | — | — |
| 2026-08-21 | David E. Farnsworth | EVP, CFO | Sell | — | — |
| 2026-08-19 | STUART KUPINSKY | EVP, CLO & Corp Sec | Sell | — | — |
| 2026-08-19 | William L Ballhaus | Chairman, President & CEO | Sell | — | — |
| 2026-08-19 | David E. Farnsworth | EVP, CFO | Sell | — | — |
| 2026-08-19 | Douglas Munro | SVP, CAO | Sell | — | — |
| 2026-08-19 | Steven Ratner | EVP, CHRO | Sell | — | — |
| 2026-08-18 | Steven Ratner | EVP, CHRO | D | — | — |
| 2026-08-18 | STUART KUPINSKY | EVP, CLO & Corp Sec | D | — | — |
| 2026-08-18 | William L Ballhaus | Chairman, President & CEO | D | — | — |
| 2026-08-18 | David E. Farnsworth | EVP, CFO | D | — | — |
| 2026-07-20 | Barry R Nearhos | Director | A | — | — |
| 2026-05-27 | HOWARD L LANCE | Director | Sell | — | — |
| 2026-05-13 | Orlando D Carvalho | Director | Sell | — | — |
| 2026-05-12 | Steven Ratner | EVP, CHRO | Sell | — | — |
| 2026-04-17 | David E. Farnsworth | EVP, CFO | Sell | — | — |
| 2026-04-17 | Barry R Nearhos | Director | A | — | — |
| 2026-03-18 | Steven Ratner | EVP, CHRO | A | — | — |
| 2026-03-04 | JANA Partners Management, LP | Director | Sell | — | — |
| 2026-02-27 | HOWARD L LANCE | Director | Sell | — | — |
| 2026-02-19 | STUART KUPINSKY | EVP, CLO & Corp Sec | Sell | — | — |
| 2026-02-19 | Douglas Munro | SVP, CAO | Sell | — | — |
| 2026-02-11 | JANA Partners Management, LP | Director | Sell | — | — |
| 2026-01-20 | Barry R Nearhos | Director | A | — | — |
| 2025-11-13 | Douglas Munro | SVP, CAO | Sell | — | — |
| 2025-11-10 | Debora A Plunkett | Director | Sell | — | — |
| 2025-11-10 | JANA Partners Management, LP | Director | Sell | — | — |
| 2025-10-24 | JANA Partners Management, LP | Director | A | — | — |
| 2025-10-24 | Orlando D Carvalho | Director | A | — | — |
| 2025-10-24 | Barry R Nearhos | Director | A | — | — |
| 2025-10-24 | GERARD J DEMURO | Director | A | — | — |
| 2025-10-24 | Debora A Plunkett | Director | A | — | — |
| 2025-10-24 | JEAN A BUA | Director | A | — | — |
| 2025-10-24 | LISA S DISBROW | Director | A | — | — |
| 2025-10-24 | HOWARD L LANCE | Director | A | — | — |
| 2025-10-20 | Barry R Nearhos | Director | A | — | — |
| 2025-09-17 | Douglas Munro | VP, CAO | Sell | — | — |
| 2025-08-25 | Steven Ratner | EVP, CHRO | Sell | — | — |
| 2025-08-20 | William L Ballhaus | Chairman, President & CEO | Sell | — | — |
| 2025-08-20 | Douglas Munro | VP, CAO | Sell | — | — |
| 2025-08-20 | David E. Farnsworth | EVP, CFO | Sell | — | — |
| 2025-08-20 | STUART KUPINSKY | EVP, CLO & Corp Sec | Sell | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 4,711,386 | — |
| — | Director | 4,114,618 | — |
| — | President and CEO | 513,861 | — |
| — | Chairman, President & CEO | 347,287 | — |
| — | EVP, COO | 248,360 | — |
| — | EVP, CFO & Treasurer | 210,760 | — |
| — | EVP, CFO and Treasurer | 202,714 | — |
| — | SVP, CFO and Treasurer | 159,909 | — |
| — | EVP, Gen Counsel & Secretary | 137,774 | — |
| — | EVP, CFO | 119,483 | — |
| — | EVP, COO | 97,226 | — |
| — | EVP, President Processing | 89,730 | — |
| — | SVP, CFO and Treasurer | 89,645 | — |
| — | EVP, President Mission Systems | 86,926 | — |
| — | Director | 86,342 | — |
| — | Director | 81,366 | — |
| — | Director | 73,838 | — |
| — | Sr VP ACS | 73,253 | — |
| — | Director | 67,634 | — |
| — | Director | 67,091 | — |
| — | EVP Chief Transformation Offic | 66,646 | — |
| — | EVP, Execution Excellence | 65,730 | — |
| — | Director | 64,703 | — |
| — | EVP, CLO & Corp Sec | 57,585 | — |
| — | EVP and Chief Growth Officer | 52,468 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MRCY quote page; the site-wide leaderboard is on the insider transactions hub.