QSI SEC Form 4 filings
Quantum-Si Inc Latest Insider Trading Activity
The most recent employee insider trading activity for Quantum-Si Inc reports 2 sales by Keyes Jeffry R. (Quantum-Si Inc Chief Financial Officer) totaling 74,763 shares at a weighted-average price of $1.01 per share, with the latest transaction dated April 21, 2026. For the past 538 days, QSI has had 17 total insider transactions represented in the displayed records. This page shows up to the 10 most recent SEC Form 4 filing records on a 6-hour delay. Sign up for real-time updates and access to 20 years of historic insider trading data.
Insider Trading For QSI Charted on Daily Candles. Scroll left or zoom out to load earlier candles (up to 2 years).
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| QSI | 2026-03-09 | 2026-03-05 | Quantum-Si Inc | Kummeth Charles R. | Director | Buy | 1 | 500,000 | $0.92 | $460,000.00 | 58.48% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2026-04-22 | 2026-04-21 | Quantum-Si Inc | Keyes Jeffry R. | Chief Financial Officer | Sell | 2 | 74,763 | $1.01 | $75,136.82 | 2.09% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2026-04-22 | 2026-04-21 | Quantum-Si Inc | Hawkins Jeffrey Alan | President & CEO | Sell | 2 | 167,424 | $1.00 | $168,261.12 | 2.19% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2026-03-24 | 2026-03-23 | Quantum-Si Inc | Lapointe Christian | GC & Corp. Secretary | Sell | 2 | 11,959 | $0.84 | $10,042.95 | 0.50% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2026-03-24 | 2026-03-23 | Quantum-Si Inc | Hawkins Jeffrey Alan | President & CEO | Sell | 2 | 23,777 | $0.84 | $19,967.47 | 0.31% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2025-12-22 | 2025-12-22 | Quantum-Si Inc | Keyes Jeffry R. | Chief Financial Officer | Sell | 1 | 8,627 | $1.28 | $11,042.56 | 0.74% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2025-09-24 | 2025-09-23 | Quantum-Si Inc | Lapointe Christian | GC & Corp. Secretary | Sell | 2 | 10,728 | $1.66 | $17,808.48 | 0.55% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2025-09-24 | 2025-09-23 | Quantum-Si Inc | Hawkins Jeffrey Alan | President & CEO | Sell | 2 | 21,286 | $1.66 | $35,334.76 | 0.41% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2025-09-24 | 2025-09-23 | Quantum-Si Inc | Keyes Jeffry R. | Chief Financial Officer | Sell | 2 | 7,746 | $1.66 | $12,858.36 | 0.33% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting QSI | 2025-03-24 | 2025-03-21 | Quantum-Si Inc | Lapointe Christian | General Counsel & Corp. Secr | Sell | 1 | 4,896 | $1.39 | $6,805.44 | 0.50% | View Filing |
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Alerts are based on public SEC filings and are provided for informational purposes only; they do not constitute financial advice.