SEC Form 4 · accession 0001140361-26-026290
Quantum-Si Inc · QSI
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Jeffry R. Keyes
Officer — Chief Financial Officer
Period of report
Jun 22, 2026
Accepted (ET)
Jun 24, 2026 · 8:23 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001816431
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Class A Common StockF2 | Jun 22, 2026 | S | 4,116 | $0.9574 | D | 1,728,466 | D | |
| Class A Common StockF3 | Jun 23, 2026 | S | 4,117 | $0.899 | D | 1,724,349 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1Represents shares sold pursuant to a mandatory Quantum-Si sell-to-cover provision for required federal, state and local withholding taxes in connection with the vesting of previously granted restricted stock units. Individual is not able to alter this mandatory sell-to-cover provision that is enacted at the grant date of the related restricted stock unit award.
- F2Represents the weighted average sales price per share. The shares sold at prices ranging from $0.9212 to $1.005 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
- F3Represents the weighted average sales price per share. The shares sold at prices ranging from $0.88 to $0.9291 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.