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MRCY

Mercury Systems, Inc.

IndustrialsRussell 2000

Mercury Systems, Inc. insider trading

Mercury Systems, Inc. files with the SEC as a Electronic Components & Accessories company headquartered in Andover, MA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent MRCY insider transactions

5 insiders traded MRCY on the open market between Aug 18, 2026 and Sep 03, 2026 — 24 sales worth $38.2M, of which one was pre-scheduled under a 10b5-1 plan.

Bought
—
Sold
$38.2M

1 of 24 on a 10b5-1 plan

Net
−$38.2M
Insiders
5

Open-market purchases (code P) and sales (code S) from Mercury Systems, Inc.'s own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 23, 2026. The live dashboard shows new filings the moment they clear.

Every MRCY Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

MRCY insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 11 insiders traded MRCY on the open market: 1 purchase worth $506.6K and 49 sales worth $218M. In the last four quarters alone: 0 purchases and 28 sales ($207.7M), by 9 insiders.

QuarterBoughtSold
Q2 2026—−$2M5 sales
Q1 2026—−$74.5M7 sales
Q4 2025—−$75.7M3 sales
Q3 2025—−$55.5M13 sales
Q2 2025—−$9.1M7 sales
Q1 2025—−$234.5K3 sales
Q4 2024—−$59.2K1 sale
Q3 2024+$506.6K1 buy−$920.1K10 sales
Largest purchase
+$506.6K of MRCY by JANA Partners Management, LP (Director · 10% Owner) on Aug 27, 2024.
Largest sale
−$75.5M of MRCY by JANA Partners Management, LP (Director) on Nov 06, 2025.

Open-market transactions through Jun 30, 2026most recent first

  • Lance Howard L

    Director

    −$799.6K

    May 26, 2026

    8,000 sh · $99.95

  • Lance Howard L

    Director

    −$123.1K

    May 26, 2026

    1,250 sh · $98.50

  • Carvalho Orlando D

    Director

    −$625.5K

    May 12, 2026

    7,000 sh · $89.36

  • Ratner Steven

    EVP, CHRO

    −$184.9K

    May 11, 2026

    2,000 sh · $92.46

  • Farnsworth David E.

    EVP, CFO

    −$307.7K

    Apr 16, 2026

    3,625 sh · $84.87

  • JANA Partners Management, LP

    Director

    −$9M

    Mar 04, 2026

    100,899 sh · $89.68

  • JANA Partners Management, LP

    Director

    −$15.2M

    Mar 03, 2026

    168,648 sh · $90.12

  • JANA Partners Management, LP

    Director

    −$17.2M

    Mar 02, 2026

    182,510 sh · $94.05

  • Lance Howard L

    Director

    −$430K

    Feb 25, 2026

    4,832 sh · $88.98

  • Kupinsky Stuart

    EVP, CLO & Corp Sec

    −$191.1K

    Feb 17, 2026

    2,287 sh · $83.56

  • Munro Douglas

    SVP, CAO

    −$48.6K

    Feb 17, 2026

    582 sh · $83.56

  • JANA Partners Management, LP

    Director

    −$32.4M

    Feb 09, 2026

    400,000 sh · $81.00

  • Munro Douglas

    SVP, CAO

    −$97.6K

    Nov 12, 2025

    1,329 sh · $73.42

  • Plunkett Debora A

    Director

    −$125.8K

    Nov 07, 2025

    1,700 sh · $73.99

  • JANA Partners Management, LP

    Director

    −$75.5M

    Nov 06, 2025

    1,000,000 sh · $75.45

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

Mercury Systems, Inc. company record

SEC industry classification
Electronic Components & Accessories
Headquarters
Andover, MA
Incorporated in
MA
Listed on
Nasdaq
SEC Central Index Key
0001049521
Previously filed as
MERCURY COMPUTER SYSTEMS INC

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Industrials sector shown above.

After insiders bought MRCY

What the stock actually did in the 90 days following each open-market purchase

Don't check MRCY — let it ping you

Get told the moment an insider moves on MRCY

Pro watches Mercury Systems, Inc. for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add MRCY to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track MRCY on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read MRCY insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

Other Industrials tickers

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This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are MRCY insiders buying or selling?
Between Aug 18, 2026 and Sep 03, 2026, 5 Mercury Systems, Inc. insiders made no open-market purchases and 24 sales worth $38.2M, a net sale of $38.2M. 1 of the sales was pre-scheduled under a Rule 10b5-1 plan.
How much MRCY stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 11 Mercury Systems, Inc. insiders made 1 open-market purchase worth $506.6K and 49 sales worth $218M. In the four quarters to Jun 30, 2026: no purchases and 28 sales ($207.7M). The largest purchase was JANA Partners Management, LP buying $506.6K on Aug 27, 2024. The largest sale was JANA Partners Management, LP selling $75.5M on Nov 06, 2025.
What was the largest recent MRCY insider trade?
Ballhaus William L (Chairman, President & CEO · Director) sold $9.4M of MRCY stock on Aug 24, 2026 at about $89.47 a share.
When did an insider last buy MRCY shares?
No open-market purchase by a Mercury Systems, Inc. insider appears in the filings from Aug 18, 2026 to Sep 03, 2026 — every recorded open-market transaction in that period was a sale. Before that, the most recent purchase in SEC's data was JANA Partners Management, LP buying $506.6K on Aug 27, 2024.
Where does MRCY insider trading data come from?
From the Form 4 filings Mercury Systems, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

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