William Geist serves as Executive at Quanterix Corp, where they oversee executive responsibilities. Since joining the company, William Geist has executed 8 insider transactions totaling $0, demonstrating a balanced approach to their equity position. Their most recent transaction on Nov 3, 2025 involved selling 4,520 shares valued at $282.8K.
William Geist currently holds 20,503 shares of Quanterix Corp (QTRX), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William Geist has been a net neutral trader of QTRX stock. They have purchased $0 and sold $0 worth of shares.
William Geist's most recent insider trade was on Nov 3, 2025, when they sold 4,520 shares at $62.57 per share.
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| $N/A |
| Discretionary |
| Aug 15, 2025 | TECH | $0 | Option Exercise | 2,623 | $N/A | Discretionary |
| Aug 15, 2025 | TECH | $43.0K | Payment | 803 | $53.60 | Discretionary |
| Feb 1, 2024 | TECH | $76.1K | Payment | 1,111 | $68.54 | Discretionary |
| Feb 1, 2022 | TECH | $0 | Award | 2,490 | $N/A | Discretionary |
| Feb 8, 2021 | QTRX | $0 | Award | 4,906 | $N/A | Discretionary |
| Nov 16, 2020 | QTRX | $0 | Award | 40,045 | $N/A | Discretionary |