MERCURY SYSTEMS (MRCY) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$79.49
+1.2% on the day
-1.8% over 12 months
52-week range $66.12 – $126.21
Share price and insider trades
MRCY closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$194M
Insiders buying0
Insiders selling9
MERCURY SYSTEMS insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 9 sold $194M of MRCY stock on the open market.
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MRCY insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $41.9M | 31 |
| Q2 2026 | — | 0 | $2.0M | 5 |
| Q1 2026 | — | 0 | $74.5M | 7 |
| Q4 2025 | — | 0 | $75.7M | 3 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day0.6×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 MERCURY SYSTEMS INC insiders reported open-market purchases totaling $0, while 9 insiders reported sales totaling $194M. Among insiders with enough purchase history to measure, Jana Partners Management, Lp (See Remarks) has the highest Insider Score at 6. 2 of 46 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 23SEC | Stuart KupinskyGeneral Counsel | Sell Plan | 1,00060,971 held (−2%) | $86.52 | $87K | -8.1% | — |
| Sep 8SEC | Steven RatnerEvp, Chro | Sell | 4,00019,275 held (−17%) | $84.51 | $338K | -5.9% | — |
| Aug 27SEC | William L BallhausCEO, President | Sell | 107,628345,884 held (−24%) | $87.09 | $9.4M | -8.7% | — |
| Aug 27SEC | William L BallhausCEO, President | Sell | 38,276372,636 held (−9%) | $88.91 | $3.4M | -10.6% | — |
| Aug 27SEC | William L BallhausCEO, President | Sell | 10,814361,822 held (−3%) | $89.74 | $970K | -11.4% | — |
| Aug 27SEC | William L BallhausCEO, President | Sell | 3,448342,436 held (−1%) | $87.99 | $303K | -9.7% | — |
| Aug 25SEC | William L BallhausCEO, President | Sell | 105,471302,574 held (−26%) | $89.47 | $9.4M | -11.2% | — |
| Aug 25SEC | William L BallhausCEO, President | Sell | 64,796256,251 held (−20%) | $92.40 | $6.0M | -14.0% | — |
| Aug 25SEC | William L BallhausCEO, President | Sell | 2,738299,836 held (−1%) | $90.60 | $248K | -12.3% | — |
| Aug 25SEC | Stuart KupinskyGeneral Counsel | Sell Plan | 1,00056,352 held (−2%) | $95.23 | $95K | -16.5% | — |
| Aug 25SEC | Steven RatnerEvp, Chro | Sell | 356 | $91.36 | $33K | -13.0% | — |
| Aug 25SEC | William L BallhausCEO, President | Sell | 204256,047 held (−0%) | $93.51 | $19K | -15.0% | — |
| Aug 21SEC | William L BallhausCEO, President | Sell | 26,802250,207 held (−10%) | $100.31 | $2.7M | -20.8% | — |
| Aug 21SEC | William L BallhausCEO, President | Sell | 22,010228,197 held (−9%) | $97.67 | $2.1M | -18.6% | — |
| Aug 21SEC | David E. FarnsworthCFO | Sell | 8,155124,579 held (−6%) | $100.31 | $818K | -20.8% | — |
| Aug 21SEC | David E. FarnsworthCFO | Sell | 6,612117,967 held (−5%) | $97.67 | $646K | -18.6% | — |
| Aug 21SEC | Steven RatnerEvp, Chro | Sell | 2,18724,301 held (−8%) | $100.31 | $219K | -20.8% | — |
| Aug 21SEC | Stuart KupinskyGeneral Counsel | Sell | 1,30857,352 held (−2%) | $100.31 | $131K | -20.8% | — |
| Aug 21SEC | Steven RatnerEvp, Chro | Sell | 1,02623,275 held (−4%) | $97.67 | $100K | -18.6% | — |
| Aug 21SEC | Douglas MunroSvp, Cao | Sell | 54813,091 held (−4%) | $100.31 | $55K | -20.8% | — |
| Aug 21SEC | Douglas MunroSvp, Cao | Sell | 10912,982 held (−1%) | $97.67 | $11K | -18.6% | — |
| Aug 19SEC | William L BallhausCEO, President | Sell | 24,144277,009 held (−8%) | $111.36 | $2.7M | -28.6% | — |
| Aug 19SEC | David E. FarnsworthCFO | Sell | 7,347132,734 held (−5%) | $111.36 | $818K | -28.6% | — |
| Aug 19SEC | William L BallhausCEO, President | Sell | 3,536301,153 held (−1%) | $109.95 | $389K | -27.7% | — |
| Aug 19SEC | Steven RatnerEvp, Chro | Sell | 1,97126,488 held (−7%) | $111.36 | $219K | -28.6% | — |
| Aug 19SEC | David E. FarnsworthCFO | Sell | 1,345140,081 held (−1%) | $109.95 | $148K | -27.7% | — |
| Aug 19SEC | Stuart KupinskyGeneral Counsel | Sell | 1,19559,838 held (−2%) | $109.95 | $131K | -27.7% | — |
| Aug 19SEC | Stuart KupinskyGeneral Counsel | Sell | 1,17858,660 held (−2%) | $111.36 | $131K | -28.6% | — |
| Aug 19SEC | Steven RatnerEvp, Chro | Sell | 1,08428,459 held (−4%) | $109.95 | $119K | -27.7% | — |
| Aug 19SEC | Douglas MunroSvp, Cao | Sell | 49413,639 held (−3%) | $111.36 | $55K | -28.6% | — |
| Aug 19SEC | Douglas MunroSvp, Cao | Sell | 40414,133 held (−3%) | $109.95 | $44K | -27.7% | — |
| May 27SEC | Howard L LanceDirector | Sell | 8,0001,250 held (−86%) | $99.95 | $800K | -20.5% | — |
| May 27SEC | Howard L LanceDirector | Sell | 1,250 | $98.50 | $123K | -19.3% | — |
| May 13SEC | Orlando D CarvalhoDirector | Sell | 7,00052,448 held (−12%) | $89.36 | $626K | -11.0% | — |
| May 12SEC | Steven RatnerEvp, Chro | Sell | 2,00032,238 held (−6%) | $92.46 | $185K | -14.0% | — |
| Apr 17SEC | David E. FarnsworthCFO | Sell | 3,625157,701 held (−2%) | $84.87 | $308K | -6.3% | — |
| Mar 4SEC | Jana Partners Management, LpSee Remarks | Sell | 182,5104,384,165 held (−4%) | $94.05 | $17.2M | -15.5% | 6 |
| Mar 4SEC | Jana Partners Management, LpSee Remarks | Sell | 168,6484,215,517 held (−4%) | $90.12 | $15.2M | -11.8% | 6 |
| Mar 4SEC | Jana Partners Management, LpSee Remarks | Sell | 100,8994,114,618 held (−2%) | $89.68 | $9.0M | -11.4% | 6 |
| Feb 27SEC | Howard L LanceDirector | Sell | 4,83227,272 held (−15%) | $88.98 | $430K | -10.7% | — |
| Feb 19SEC | Stuart KupinskyGeneral Counsel | Sell | 2,28768,010 held (−3%) | $83.56 | $191K | -4.9% | — |
| Feb 19SEC | Douglas MunroSvp, Cao | Sell | 58214,328 held (−4%) | $83.56 | $49K | -4.9% | — |
| Feb 11SEC | Jana Partners Management, LpSee Remarks | Sell | 400,0004,566,675 held (−8%) | $81.00 | $32.4M | -1.9% | 6 |
| Nov 13SEC | Douglas MunroSvp, Cao | Sell | 1,32914,678 held (−8%) | $73.42 | $98K | +8.3% | — |
| Nov 10SEC | Jana Partners Management, LpSee Remarks | Sell | 1,000,0004,966,675 held (−17%) | $75.45 | $75.5M | +5.4% | 6 |
| Nov 10SEC | Debora A PlunkettDirector | Sell | 1,70016,833 held (−9%) | $73.99 | $126K | +7.4% | — |
Insiders at MERCURY SYSTEMS INC
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Jana Partners Management, LpSee Remarks | — | $149M | Mar 4, 2026 | 6 |
| William L BallhausCEO, President | — | $37.7M | Aug 27, 2026 | — |
| David E. FarnsworthCFO | — | $2.7M | Aug 21, 2026 | — |
| Howard L LanceDirector | — | $1.4M | May 27, 2026 | — |
| Steven RatnerEvp, Chro | — | $1.2M | Sep 8, 2026 | — |
| Stuart KupinskyGeneral Counsel | — | $767K | Sep 23, 2026 | — |
| Orlando D CarvalhoDirector | — | $626K | May 13, 2026 | — |
| Douglas MunroSvp, Cao | — | $311K | Aug 21, 2026 | — |
| Debora A PlunkettDirector | — | $126K | Nov 10, 2025 | — |
MRCY stock: common questions
Are MERCURY SYSTEMS INC insiders buying MRCY stock?
In the past 12 months, 0 insiders reported open-market purchases of MRCY worth $0.
Are MERCURY SYSTEMS INC insiders selling MRCY stock?
9 insiders reported sales worth $194M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is MRCY's 52-week range?
Over the past year MRCY has traded between $66.12 and $126.21. It last closed at $79.49 on Oct 9, 2026.