Form 4: Quanterix CTO Reports Stock Transaction
Insider Transaction (Form 4)
Michael Francis Miller, Chief Technology Officer of Quanterix Corp, reported multiple transactions in common stock on July 15, 2026.
Summary
- Option exercise/conversion: acquired 81 Common Stock on July 15, 2026; holds 35,058 after (Direct).
- Tax/exercise-price withholding: disposed of 25 Common Stock at $4.24 ($106) on July 15, 2026; holds 35,033 after (Direct).
- Option exercise/conversion: acquired 136 Common Stock on July 15, 2026; holds 35,169 after (Direct).
- Tax/exercise-price withholding: disposed of 41 Common Stock at $4.24 ($174) on July 15, 2026; holds 35,128 after (Direct).
- Option exercise/conversion: acquired 135 Common Stock on July 15, 2026; holds 35,263 after (Direct).
- Tax/exercise-price withholding: disposed of 41 Common Stock at $4.24 ($174) on July 15, 2026; holds 35,222 after (Direct).
- Option exercise/conversion: acquired 372 Common Stock on July 15, 2026; holds 35,594 after (Direct).
- Tax/exercise-price withholding: disposed of 111 Common Stock at $4.24 ($471) on July 15, 2026; holds 35,483 after (Direct).
- Option exercise/conversion: acquired 834 Common Stock on July 15, 2026; holds 36,317 after (Direct).
- Tax/exercise-price withholding: disposed of 249 Common Stock at $4.24 ($1,056) on July 15, 2026; holds 36,068 after (Direct).
- Option exercise/conversion: disposed of 81 Restricted Stock Unit on July 15, 2026; holds 598 after (Direct).
- Option exercise/conversion: disposed of 136 Restricted Stock Unit on July 15, 2026; holds 1,117 after (Direct).
- Option exercise/conversion: disposed of 135 Restricted Stock Unit on July 15, 2026; holds 2,576 after (Direct).
- Option exercise/conversion: disposed of 372 Restricted Stock Unit on July 15, 2026; holds 8,201 after (Direct).
- Option exercise/conversion: disposed of 834 Restricted Stock Unit on July 15, 2026; holds 25,857 after (Direct).
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as routine: the reported changes are grants, option exercises, tax withholding or similar administrative transactions, which carry limited directional signal.
Insider Transactions
Michael Francis Miller — Officer (Chief Technology Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-07-15 | Option exercise/conversion | Common Stock | 81 | — | — | 35,058 |
| 2026-07-15 | Tax/exercise-price withholding | Common Stock | 25 | $4 | $106 | 35,033 |
| 2026-07-15 | Option exercise/conversion | Common Stock | 136 | — | — | 35,169 |
| 2026-07-15 | Tax/exercise-price withholding | Common Stock | 41 | $4 | $174 | 35,128 |
| 2026-07-15 | Option exercise/conversion | Common Stock | 135 | — | — | 35,263 |
| 2026-07-15 | Tax/exercise-price withholding | Common Stock | 41 | $4 | $174 | 35,222 |
| 2026-07-15 | Option exercise/conversion | Common Stock | 372 | — | — | 35,594 |
| 2026-07-15 | Tax/exercise-price withholding | Common Stock | 111 | $4 | $471 | 35,483 |
| 2026-07-15 | Option exercise/conversion | Common Stock | 834 | — | — | 36,317 |
| 2026-07-15 | Tax/exercise-price withholding | Common Stock | 249 | $4 | $1.1K | 36,068 |
| 2026-07-15 | Option exercise/conversion | Restricted Stock Unit | 81 | — | — | 598 |
| 2026-07-15 | Option exercise/conversion | Restricted Stock Unit | 136 | — | — | 1,117 |
| 2026-07-15 | Option exercise/conversion | Restricted Stock Unit | 135 | — | — | 2,576 |
| 2026-07-15 | Option exercise/conversion | Restricted Stock Unit | 372 | — | — | 8,201 |
| 2026-07-15 | Option exercise/conversion | Restricted Stock Unit | 834 | — | — | 25,857 |
Key Dates
| Date | Description |
|---|---|
| 2026-07-15 | Option exercise/conversion (81 shares) |
| 2026-07-15 | Tax/exercise-price withholding (25 shares) |
| 2026-07-15 | Option exercise/conversion (136 shares) |
| 2026-07-15 | Tax/exercise-price withholding (41 shares) |
| 2026-07-15 | Option exercise/conversion (135 shares) |
| 2026-07-15 | Tax/exercise-price withholding (41 shares) |
| 2026-07-15 | Option exercise/conversion (372 shares) |
| 2026-07-15 | Tax/exercise-price withholding (111 shares) |
| 2026-07-15 | Option exercise/conversion (834 shares) |
| 2026-07-15 | Tax/exercise-price withholding (249 shares) |
| 2026-07-15 | Option exercise/conversion (81 shares) |
| 2026-07-15 | Option exercise/conversion (136 shares) |
| 2026-07-15 | Option exercise/conversion (135 shares) |
| 2026-07-15 | Option exercise/conversion (372 shares) |
| 2026-07-15 | Option exercise/conversion (834 shares) |
Keywords
insider transaction, Form 4, QTRX, Quanterix Corp, neutral, Michael Francis Miller
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