William L Ballhaus insider trades: Mercury Systems (MRCY) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where William reports to the SEC
Open-market buys and sales
8 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 26, 2026 | MRCY | ↓ Sell | 160,166 | $87.72 | $14.1M | Direct | Aug 27, 2026 (1d) |
| Aug 24, 2026 | MRCY | ↓ Sell | 173,209 | $90.59 | $15.7M | Direct | Aug 25, 2026 (1d) |
| Aug 20, 2026 | MRCY | ↓ Sell | 48,812 | $99.12 | $4.8M | Direct | Aug 21, 2026 (1d) |
| Aug 18, 2026 | MRCY | ↓ Sell | 27,680 | $111.18 | $3.1M | Direct | Aug 19, 2026 (1d) |
| Aug 19, 2025 | MRCY | ↓ Sell | 23,445 | $65.37 | $1.5M | Direct | Aug 20, 2025 (1d) |
| Aug 19, 2024 | MRCY | ↓ Sell | 6,549 | $39.49 | $259K | Direct | Aug 21, 2024 (2d) |
| Feb 12, 2024 | MRCY | ↑ Buy | 7,066 | $28.74 | $203K | By Milestone Road Holdings, LLC | Feb 13, 2024 (1d) |
| Aug 18, 2023 | MRCY | ↑ Buy | 39,925 | $37.57 | $1.5M | Direct | Aug 22, 2023 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MRCY insiders
Open-market trades in the last 12 months
About William L Ballhaus's insider trades
William L Ballhaus is Chairman, President & CEO at Mercury Systems (MRCY). Since Aug 18, 2023, William has reported 2 open-market purchases worth $1.7M and 6 sales worth $39.4M on SEC Form 4. In the last 12 months: 4 sales ($37.7M).
Their filings also include grants and awards (11 filings), shares withheld for taxes (4 filings), option exercises (3 filings), shares returned to the company (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MRCY insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.