// company-profile
Quantum-Si Inc Insider Trading
QSIEvery SEC Form 4 insider trading filing for Quantum-Si Inc (QSI) — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC.
curl "https://api.form4api.com/v1/transactions?ticker=QSI" -H "X-Api-Key: YOUR_API_KEY"// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Quantum-Si Inc insiders bought $0 (9 transactions) and sold $71K (8 transactions).
- Most active insider: Vieceli John S. with 2 transactions totaling $28K.
- Largest single sale: $14K by Vieceli John S. on Jun 22, 2026.
Activity is mixed — buys and sales are roughly balanced.
Institutional Ownership
Top 13F-HR holders of Quantum-Si Inc as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 23, 2026 | LaPointe Christian | QSI | Sale | 7,794 | $0.90 | $7K |
| Jun 23, 2026 | Vieceli John S. | QSI | Sale | 15,112 | $0.90 | $14K |
| Jun 23, 2026 | Hawkins Jeffrey Alan | QSI | Sale | 11,311 | $0.90 | $10K |
| Jun 23, 2026 | Keyes Jeffry R. | QSI | Sale | 4,117 | $0.90 | $4K |
| Jun 22, 2026 | Vieceli John S. | QSI | Sale | 15,111 | $0.96 | $14K |
45 more transactions hidden
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