Insider Ledger
Quantum-Si Inc (QSI) insider buying and SEC filings
Quantum-Si Inc · CIK 1816431
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Measuring & Controlling Devices, NEC
- State of incorporation
- DE
- Fiscal year end
- Dec 31
- Former names
- HighCape Capital Acquisition Corp.
Insider activity in the last 12 months
Bought
$564K
Insiders who bought
2
Sold (not marked 10b5-1)
$495K
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 21–22, 2026 | Sale | Jeffrey Alan Hawkins (CEO and Director) sold 29,852 shares between Sep 21 and Sep 22 at about $0.7600 ($23K). Holdings down 1% to 3,639,950 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 23, 2026 |
| Sep 21–22, 2026 | Sale | Jeffry R. Keyes (CFO) sold 7,665 shares between Sep 21 and Sep 22 at about $0.7600 ($6K). Holdings down <1% to 1,716,684 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 23, 2026 |
| Sep 21–22, 2026 | Sale | Christian LaPointe (GC & Corp. Secretary) sold 14,516 shares between Sep 21 and Sep 22 at about $0.7600 ($11K). Holdings down 1% to 1,167,913 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 23, 2026 |
| Jun 22–23, 2026 | Sale | Christian LaPointe (GC & Corp. Secretary) sold 15,588 shares between Jun 22 and Jun 23 at about $0.9300 ($14K). Holdings down 1% to 1,182,429 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 24, 2026 |
| Jun 22–23, 2026 | Sale | Jeffry R. Keyes (CFO) sold 8,233 shares between Jun 22 and Jun 23 at about $0.9300 ($8K). Holdings down <1% to 1,724,349 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 24, 2026 |
| Jun 22–23, 2026 | Sale | John S. Vieceli (Chief Product Officer) sold 30,223 shares between Jun 22 and Jun 23 at about $0.9300 ($28K). Holdings down 3% to 1,140,434 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 24, 2026 |
| Jun 22–23, 2026 | Sale | Jeffrey Alan Hawkins (CEO and Director) sold 22,621 shares between Jun 22 and Jun 23 at about $0.9300 ($21K). Holdings down 1% to 3,669,802 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 24, 2026 |
| Apr 20–21, 2026 | Sale | Jeffry R. Keyes (CFO) sold 74,763 shares between Apr 20 and Apr 21 at about $1.01 ($75K). Holdings down 4% to 1,732,582 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 22, 2026 |
| Apr 20–21, 2026 | Sale | Jeffrey Alan Hawkins (CEO and Director) sold 167,424 shares between Apr 20 and Apr 21 at about $1.01 ($168K). Holdings down 4% to 3,692,423 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 22, 2026 |
| Mar 20–23, 2026 | Sale | Jeffry R. Keyes (CFO) sold 8,655 shares between Mar 20 and Mar 23 at about $0.8398 ($7K). Holdings down <1% to 1,807,345 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 24, 2026 |
| Mar 20–23, 2026 | Sale | Christian LaPointe (GC & Corp. Secretary) sold 11,959 shares between Mar 20 and Mar 23 at about $0.8398 ($10K). Holdings down 1% to 1,198,017 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 24, 2026 |
| Mar 20–23, 2026 | Sale | John S. Vieceli (Chief Product Officer) sold 21,997 shares between Mar 20 and Mar 23 at about $0.8398 ($18K). Holdings down 2% to 1,170,657 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 24, 2026 |
| Mar 20–23, 2026 | Sale | Jeffrey Alan Hawkins (CEO and Director) sold 23,777 shares between Mar 20 and Mar 23 at about $0.8398 ($20K). Holdings down 1% to 3,859,847 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 24, 2026 |
| Mar 5, 2026 | Purchase (code P) | Charles R. Kummeth (Director) bought 500,000 shares at about $0.9200 ($460K), reported as a purchase (code P). Holdings up 141% to 855,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 9, 2026 |
| Mar 5, 2026 | Purchase (code P) | Paula Dowdy (Director) bought 109,890 shares at about $0.9500 ($104K), reported as a purchase (code P). Holdings up 69% to 269,107 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 9, 2026 |
| Dec 22, 2025 | Sale | John S. Vieceli (Chief Product Officer) sold 21,927 shares at about $1.28 ($28K). Holdings down 3% to 800,973 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 22, 2025 |
| Dec 22, 2025 | Sale | Christian LaPointe (GC & Corp. Secretary) sold 11,951 shares at about $1.28 ($15K). Holdings down 1% to 948,855 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 22, 2025 |
| Dec 22, 2025 | Sale | Jeffry R. Keyes (CFO) sold 8,627 shares at about $1.28 ($11K). Holdings down 1% to 1,163,197 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 22, 2025 |
| Dec 22, 2025 | Sale | Jeffrey Alan Hawkins (CEO and Director) sold 23,707 shares at about $1.28 ($30K). Holdings down 1% to 2,578,018 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 22, 2025 |
14 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
2 insiders bought in 30 days
$564K in purchases since Mar 5, 2026 · Purchases traded Mar 5, 2026 to Mar 5, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Paula Dowdy (Director) | $104K | Mar 5, 2026 | SEC filing |
| Charles R. Kummeth (Director) | $460K | Mar 5, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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