William L Ballhaus sold $4.8M of MRCY
Chairman, President & CEO at MERCURY SYSTEMS INC. 48,812 shares at an average of $99.12, traded Aug 19, 2026, filed Aug 21, 2026.
Score components
- +25RoleCEO
- +25Trade size$4.8M at market
- +5Share of holdings soldSold 18% of holdings
- +15Cluster5 insiders selling within 14 days
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001049521-26-000055, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 19, 2026 | SOpen-market sale Common Stock | -26,802 | $100.31 | $2.7M | 250,207 | Aug 21, 2026 |
| Aug 20, 2026 | SOpen-market sale Common Stock | -22,010 | $97.67 | $2.1M | 228,197 | Aug 21, 2026 |
Related signals
Other insiders at MERCURY SYSTEMS INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 4Weak | MERCURY SYSTEMS INC | Stuart Kupinsky EVP, CLO & Corp Sec | $87k 1,000 shares | -2% | |
| 50Moderate | MERCURY SYSTEMS INC | Steven Ratner EVP, CHRO | $338k 4,000 shares | -17% | |
| 60Notable | MERCURY SYSTEMS INC | William L Ballhaus Chairman, President & CEO | $14M 160,166 shares | -35% | |
| 70Notable | MERCURY SYSTEMS INC | William L Ballhaus Chairman, President & CEO | $16M 173,209 shares | -54% | |
| 20Weak | MERCURY SYSTEMS INC | Stuart Kupinsky EVP, CLO & Corp Sec | $95k 1,000 shares | -2% | |
| 56Moderate | MERCURY SYSTEMS INC | Steven Ratner EVP, CHRO | $33k 356 shares | -100% | |
| 67Notable | MERCURY SYSTEMS INC | David E. Farnsworth EVP, CFO | $1.5M 14,767 shares | -11% | |
| 41Moderate | MERCURY SYSTEMS INC | Stuart Kupinsky EVP, CLO & Corp Sec | $131k 1,308 shares | -2% | |
| 49Moderate | MERCURY SYSTEMS INC | Steven Ratner EVP, CHRO | $320k 3,213 shares | -12% | |
| 38Weak | MERCURY SYSTEMS INC | Douglas Munro SVP, CAO | $66k 657 shares | -5% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.