Jeffry R. Keyes - 22 Jun 2026 Form 4 Insider Report for Quantum-Si Inc (QSI)

Reporting relationship: Chief Financial Officer
Issuer ticker: QSI
Reported as of: 22 Jun 2026
Net transaction value: -$7,642
SEC form: 4
Accepted by SEC: 24 Jun 2026, 20:23:00 UTC
Prior SEC filing: 22 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Christian LaPointe, Ph.D., Attorney-in-Fact.

Key filing fact

Jeffry R. Keyes filed Form 4 for Quantum-Si Inc (QSI) on 24 Jun 2026.

Key facts

This page summarizes Jeffry R. Keyes's Form 4 filing for Quantum-Si Inc (QSI).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 24 Jun 2026, 20:23.

Change

Previous filing in this sequence was filed on 22 Apr 2026.
Current net transaction value: -$7,642.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001557736 Primary reporting owner

Keyes Jeffry R.

Relationship: Chief Financial Officer
Address: C/O QUANTUM-SI INCORPORATED, 29 BUSINESS PARK DRIVE, BRANFORD
Signature: /s/ Christian LaPointe, Ph.D., Attorney-in-Fact.
Signature date: 24 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QSI transaction

Class A Common Stock

Sale

Transaction value: $3,941
Shares: -4,116
Change %: -0.24%
Price: $0.9574
Shares after: 1,728,466
Date: 22 Jun 2026
Ownership: Direct
Footnotes: F1, F2

QSI transaction

Class A Common Stock

Sale

Transaction value: $3,701
Shares: -4,117
Change %: -0.24%
Price: $0.8990
Shares after: 1,724,349
Date: 23 Jun 2026
Ownership: Direct
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents 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.

Footnote F2

Represents 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.

Footnote F3

Represents 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.