MRCY
MERCURY SYSTEMS INC · Manufacturing · Market cap $4.5B
Insiders sold $41.9M net in the last 90 days ·5 sellers, 0 buyers· 2 of 27 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 23, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$194.1M
reported sales (SEC code S)
Unique Insiders
9
in the rolling window
Latest filing
Oct 16, 2026
KUPINSKY STUART
MERCURY SYSTEMS INC (MRCY) has 49 SEC Form 4 filings (72 transaction rows) in the rolling window, disclosed by 9 distinct insiders. Most recent filing: Oct 16, 2026.
Inside the rolling window, 9 insiders at MERCURY SYSTEMS INC reported no open-market purchases and 41 open-market sales totaling $194.1M. The most active filer is Chairman, President & CEO Ballhaus William L with 8 filings. Insiders have net sold $43.6M over the trailing 6 months. The most recent open-market filing is a sale of 1,000 shares by EVP, CLO & Corp Sec KUPINSKY STUART, dated Sep 21, 2026, worth $87K.
- Industry:Aerospace & Defense
- CEO:William L. Ballhaus
- Employees:2,102
- HQ:Andover, MA, US
- IPO:1998-01-30
| Source | |||||||
|---|---|---|---|---|---|---|---|
| EVP, CLO & Corp Sec | Sale | 1,000 | $87K | Sep 23 | -9.9% | SEC ↗ | |
| EVP, CHRO | Sale | 4,000 | $338K | Sep 9 | -7.7% | SEC ↗ | |
| Chairman, President & CEO | Sale | 111,076 | $9.7M | Aug 27 | -17.6% | SEC ↗ | |
| Chairman, President & CEO | Sale | 49,090 | $4.4M | Aug 27 | -17.6% | SEC ↗ | |
| EVP, CHRO | Sale | 356 | $33K | Aug 25 | -15.1% | SEC ↗ | |
| EVP, CLO & Corp Sec | Sale | 1,000 | $95K | Aug 25 | -15.1% | SEC ↗ | |
| Chairman, President & CEO | Sale | 65,000 | $6.0M | Aug 25 | -15.1% | SEC ↗ | |
| Chairman, President & CEO | Sale | 108,209 | $9.7M | Aug 25 | — | SEC ↗ | |
| SVP, CAO | Sale | 548 | $55K | Aug 21 | — | SEC ↗ | |
| SVP, CAO | Sale | 109 | $11K | Aug 21 | — | SEC ↗ | |
| EVP, CHRO | Sale | 2,187 | $219K | Aug 21 | — | SEC ↗ | |
| EVP, CHRO | Sale | 1,026 | $100K | Aug 21 | — | SEC ↗ | |
| EVP, CLO & Corp Sec | Sale | 1,308 | $131K | Aug 21 | — | SEC ↗ | |
| EVP, CFO | Sale | 8,155 | $818K | Aug 21 | — | SEC ↗ | |
| EVP, CFO | Sale | 6,612 | $646K | Aug 21 | — | SEC ↗ | |
| Chairman, President & CEO | Sale | 26,802 | $2.7M | Aug 21 | — | SEC ↗ | |
| Chairman, President & CEO | Sale | 22,010 | $2.1M | Aug 21 | — | SEC ↗ | |
Munro DouglasFirst in 6 months | SVP, CAO | Sale | 404 | $44K | Aug 19 | — | SEC ↗ |
Munro DouglasFirst in 6 months | SVP, CAO | Sale | 494 | $55K | Aug 19 | — | SEC ↗ |
Ratner StevenFirst in 3 months | EVP, CHRO | Sale | 1,084 | $119K | Aug 19 | — | SEC ↗ |
Ratner StevenFirst in 3 months | EVP, CHRO | Sale | 1,971 | $219K | Aug 19 | — | SEC ↗ |
KUPINSKY STUARTFirst in 6 months | EVP, CLO & Corp Sec | Sale | 1,195 | $131K | Aug 19 | — | SEC ↗ |
KUPINSKY STUARTFirst in 6 months | EVP, CLO & Corp Sec | Sale | 1,178 | $131K | Aug 19 | — | SEC ↗ |
Ballhaus William LFirst filing | Chairman, President & CEO | Sale | 3,536 | $389K | Aug 19 | — | SEC ↗ |
Ballhaus William LFirst filing | Chairman, President & CEO | Sale | 24,144 | $2.7M | Aug 19 | — | SEC ↗ |
Frequently asked questions
How many SEC Form 4 insider filings does MRCY have?
MERCURY SYSTEMS INC (MRCY) has 49 SEC Form 4 filings (72 transaction rows) in the rolling 365-day window, disclosed by 9 distinct insiders. Most recent filing: Oct 16, 2026.
When was the most recent SEC Form 4 filing for MRCY?
The most recent Form 4 filing for MRCY on Tracefour is dated Oct 16, 2026.
Who is the most active insider at MRCY?
The most active SEC Form 4 filer at MRCY in the rolling window is Chairman, President & CEO Ballhaus William L, with 8 filings.
What is the net insider flow at MRCY over the last 6 months?
Over the trailing 180 days, insiders at MRCY have net sold $43.6M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at MRCY in the current window?
Inside the rolling window, insiders at MRCY bought $0 and sold $194.1M based on SEC Form 4 filings.
Can I get alerts for MRCY insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at MERCURY SYSTEMS INC (MRCY). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
MERCURY SYSTEMS INC is in the Manufacturing sector.