Form 4: Mercury Systems CEO Sells Shares
Insider Transaction (Form 4)
William L Ballhaus, Chairman, President & CEO and a Director of Mercury Systems Inc, sold 173,209 shares of common stock on August 21, 2026.
Summary
- Option exercise/conversion: acquired 92,850 Common Stock at $42.00 ($3,899,700) on August 21, 2026; holds 321,047 after (Direct).
- Open-market sale: disposed of 64,796 Common Stock at $92.40 ($5,987,410) on August 21, 2026; holds 256,251 after (Direct).
- Open-market sale: disposed of 204 Common Stock at $93.51 ($19,076) on August 21, 2026; holds 256,047 after (Direct).
- Option exercise/conversion: acquired 140,650 Common Stock at $42.00 ($5,907,300) on August 24, 2026; holds 396,697 after (Direct).
- Option exercise/conversion: acquired 11,348 Common Stock at $43.00 ($487,964) on August 24, 2026; holds 408,045 after (Direct).
- Open-market sale: disposed of 105,471 Common Stock at $89.47 ($9,436,807) on August 24, 2026; holds 302,574 after (Direct).
- Open-market sale: disposed of 2,738 Common Stock at $90.60 ($248,063) on August 24, 2026; holds 299,836 after (Direct).
- Option exercise/conversion: disposed of 92,850 Employee Stock Option (Right to Buy) on August 21, 2026; holds 140,650 after (Direct).
- Option exercise/conversion: disposed of 140,650 Employee Stock Option (Right to Buy) on August 24, 2026 (Direct).
- Option exercise/conversion: disposed of 11,348 Employee Stock Option (Right to Buy) on August 24, 2026; holds 222,152 after (Direct).
Sentiment
Score: 2
Explanation: StockSavvy.ai views this as a mildly negative signal: an insider sold $15,691,355 of stock on the open market.
Insider Transactions
William L Ballhaus — Director, Officer (Chairman, President & CEO)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-21 | Option exercise/conversion | Common Stock | 92,850 | $42 | $3.9M | 321,047.325 |
| 2026-08-21 | Open-market sale | Common Stock | 64,796 | $92 | $6.0M | 256,251.325 |
| 2026-08-21 | Open-market sale | Common Stock | 204 | $94 | $19.1K | 256,047.325 |
| 2026-08-24 | Option exercise/conversion | Common Stock | 140,650 | $42 | $5.9M | 396,697.325 |
| 2026-08-24 | Option exercise/conversion | Common Stock | 11,348 | $43 | $488.0K | 408,045.325 |
| 2026-08-24 | Open-market sale | Common Stock | 105,471 | $89 | $9.4M | 302,574.325 |
| 2026-08-24 | Open-market sale | Common Stock | 2,738 | $91 | $248.1K | 299,836.325 |
| 2026-08-21 | Option exercise/conversion | Employee Stock Option (Right to Buy) | 92,850 | — | — | 140,650 |
| 2026-08-24 | Option exercise/conversion | Employee Stock Option (Right to Buy) | 140,650 | — | — | 0 |
| 2026-08-24 | Option exercise/conversion | Employee Stock Option (Right to Buy) | 11,348 | — | — | 222,152 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-21 | Option exercise/conversion (92,850 shares) |
| 2026-08-21 | Open-market sale (64,796 shares) |
| 2026-08-21 | Open-market sale (204 shares) |
| 2026-08-24 | Option exercise/conversion (140,650 shares) |
| 2026-08-24 | Option exercise/conversion (11,348 shares) |
| 2026-08-24 | Open-market sale (105,471 shares) |
| 2026-08-24 | Open-market sale (2,738 shares) |
| 2026-08-21 | Option exercise/conversion (92,850 shares) |
| 2026-08-24 | Option exercise/conversion (140,650 shares) |
| 2026-08-24 | Option exercise/conversion (11,348 shares) |
Keywords
insider transaction, Form 4, MRCY, MERCURY SYSTEMS INC, bearish, William L Ballhaus
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