Mercury Systems, Inc. (MRCY) Insider Trading
Over the last 3 months, MRCY insiders made 0 open-market buys and 5 sales, a net sale of -$2.0M (SEC Form 4). Over the last 6 months, 280 institutions increased and 236 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
5
Net (3m)
-$2.0M
Insider trades by month Buys Sells
Sep
Nov
Feb
Mar
Apr
May
Context3-month price +25.1%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 27, 2026 | LANCE HOWARD Ldirector | Sell | 8,000 | $99.95 |
| May 27, 2026 | LANCE HOWARD Ldirector | Sell | 1,250 | $98.50 |
| May 13, 2026 | Carvalho Orlando Ddirector | Sell | 7,000 | $89.36 |
| May 12, 2026 | Ratner Stevenofficer: EVP, CHRO | Sell | 2,000 | $92.46 |
| Apr 17, 2026 | Farnsworth David E.officer: EVP, CFO | Sell | 3,625 | $84.87 |
| Apr 17, 2026 | Nearhos Barry Rdirector | Grant | 245 | — |
| Mar 4, 2026 | JANA Partners Management, LPdirector, other: See Remarks | Sell | 168,648 | $90.12 |
| Mar 4, 2026 | JANA Partners Management, LPdirector, other: See Remarks | Sell | 100,899 | $89.68 |
| Mar 4, 2026 | JANA Partners Management, LPdirector, other: See Remarks | Sell | 182,510 | $94.05 |
| Feb 27, 2026 | LANCE HOWARD Ldirector | Sell | 4,832 | $88.98 |
| Feb 19, 2026 | KUPINSKY STUARTofficer: EVP, CLO & Corp Sec | Sell | 2,287 | $83.56 |
| Feb 19, 2026 | Munro Douglasofficer: SVP, CAO | Sell | 582 | $83.56 |
| Feb 11, 2026 | JANA Partners Management, LPdirector, other: See Remarks | Sell | 400,000 | $81.00 |
| Jan 20, 2026 | Nearhos Barry Rdirector | Grant | 474 | — |
| Nov 13, 2025 | Munro Douglasofficer: SVP, CAO | Sell | 1,329 | $73.42 |
| Nov 10, 2025 | Plunkett Debora Adirector | Sell | 1,700 | $73.99 |
| Nov 10, 2025 | JANA Partners Management, LPdirector, other: See Remarks | Sell | 1,000,000 | $75.45 |
| Oct 24, 2025 | DISBROW LISA Sdirector | Grant | 2,362 | — |
| Oct 24, 2025 | LANCE HOWARD Ldirector | Grant | 2,362 | — |
| Oct 24, 2025 | Carvalho Orlando Ddirector | Grant | 2,362 | — |
| Oct 24, 2025 | BUA JEAN Adirector | Grant | 2,362 | — |
| Oct 24, 2025 | Nearhos Barry Rdirector | Grant | 2,362 | — |
| Oct 24, 2025 | DEMURO GERARD Jdirector | Grant | 2,362 | — |
| Oct 24, 2025 | Plunkett Debora Adirector | Grant | 2,362 | — |
| Oct 24, 2025 | JANA Partners Management, LPdirector, other: See Remarks | Grant | 2,362 | — |
| Oct 20, 2025 | Nearhos Barry Rdirector | Grant | 487 | — |
| Sep 17, 2025 | Munro Douglasofficer: VP, CAO | Sell | 67 | $73.40 |
| Aug 25, 2025 | Ratner Stevenofficer: EVP, CHRO | Sell | 7,000 | $63.76 |
| Aug 20, 2025 | Munro Douglasofficer: VP, CAO | Sell | 363 | $66.52 |
| Aug 20, 2025 | Farnsworth David E.officer: EVP, CFO | Sell | 7,339 | $66.52 |
Source: MRCY SEC Form 4 filings, latest May 27, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their MRCY positions over the last 6 months (SEC Form 13F).
Increased
280
New positions
105
Reduced
236
Sold out
68
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 8.9M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 8.6M | Feb 12, 2026 |
| VANGUARD GROUP INC | Reduced | 5.6M | Jan 29, 2026 |
| JANA PARTNERS MANAGEMENT, LP | Reduced | 5.0M | Feb 17, 2026 |
| JANA PARTNERS MANAGEMENT, LP | Reduced | 4.1M | May 15, 2026 |
| STATE STREET CORP | Increased | 3.9M | May 15, 2026 |
| STATE STREET CORP | Increased | 3.4M | Feb 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 2.9M | May 8, 2026 |
| INVESCO LTD. | Increased | 2.4M | May 12, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2.4M | May 15, 2026 |
| CONESTOGA CAPITAL ADVISORS, LLC | Reduced | 2.2M | Feb 2, 2026 |
| CONESTOGA CAPITAL ADVISORS, LLC | Reduced | 1.9M | Apr 24, 2026 |
| INVESCO LTD. | Increased | 1.9M | Feb 19, 2026 |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | Increased | 1.6M | May 15, 2026 |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | Increased | 1.5M | Feb 19, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.