Welcome to our dedicated page for Quantum-Si Incorporated SEC filings (Ticker: QSI), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Quantum-Si Incorporated filings document the formal disclosures of a Nasdaq-listed proteomics technology company developing single-molecule protein sequencing systems. Form 8-K reports furnish financial results, business updates, Regulation FD presentations and material agreements tied to the company’s operations and capital markets activity.
The filing record also covers annual-meeting proxy matters, board and compensation governance, executive and equity-award disclosure, Class A common stock, and redeemable warrants listed under QSIAW. Material-event filings document sales-agreement and shelf-registration disclosures for potential Class A common stock issuance, as well as lease-related settlement and termination matters.
Quantum-Si Inc general counsel and corporate secretary Christian LaPointe reported two small open-market sales of Class A common stock tied to tax withholding on vested restricted stock units. He sold 7,794 shares on June 22 at a weighted average price of $0.9574 per share and 7,794 shares on June 23 at a weighted average price of $0.8990 per share, for a total of 15,588 shares. The sales were executed under a mandatory sell-to-cover provision for federal, state and local tax withholding and were not discretionary. After these transactions, LaPointe directly holds 1,182,429 Quantum-Si shares.
Quantum-Si Inc Chief Financial Officer Jeffry R. Keyes reported sales of a total of 8,233 shares of Class A Common Stock on June 22 and 23, 2026. According to the disclosure, these transactions were executed under a mandatory sell-to-cover provision to satisfy federal, state and local tax withholding on vested restricted stock units. Following the sales, he directly holds 1,724,349 shares of Class A Common Stock.
Quantum-Si Inc Chief Product Officer John S. Vieceli reported sales of 30,223 shares of Class A Common Stock to cover tax obligations tied to vesting restricted stock units. The transactions occurred on June 22 and June 23 in open-market sales under a mandatory sell-to-cover provision that was set at the grant date and cannot be altered by the individual.
Shares were sold at weighted average prices of $0.9574 and $0.899 per share across price ranges described in the footnotes. After these sales, Vieceli directly holds 1,140,434 shares of Quantum-Si Class A Common Stock, indicating he retains a substantial equity position.
Quantum-Si Inc President & CEO Jeffrey Alan Hawkins reported routine share sales tied to tax withholding on vested equity. On two days, he sold a total of 22,621 shares of Class A Common Stock in open-market transactions under a mandatory sell-to-cover provision for federal, state and local taxes related to previously granted restricted stock units. The sales occurred at weighted average prices around $0.96 and $0.90 per share, and he held 3,669,802 shares directly after the transactions.
Quantum-Si Incorporated reported a proposed sale of Class A Common Stock via a Form 144 filing. The filing lists Restricted Stock Unit vesting on 06/20/2026 totaling 60,425 shares and notes broker Morgan Stanley Smith Barney LLC. Timing and cash‑flow treatment are those shown in the filing.
Quantum-Si Incorporated filed a Form 144 notice for the proposed sale of 21,676 shares of Class A Common Stock associated with Restricted Stock Unit vesting on 06/20/2026. The filing records a prior sale of 74,763 shares on 04/20/2026 by Jeffry Keyes.
Quantum-Si Incorporated filed a Form 144 reporting an intended sale of 79,589 shares of Class A Common Stock tied to restricted stock unit vesting on 06/20/2026. The filing lists the transaction as equity compensation for services rendered and names Morgan Stanley Smith Barney LLC as the broker.
Quantum-Si (QSI) affiliate filed a Form 144 reporting proposed sales of Class A common stock. The filing lists a Restricted Stock Unit vesting of 59,609 shares on 06/20/2026 described as equity compensation for services. It also records a prior sale of 167,424 shares on 04/20/2026 by Jeffrey Hawkins.
Quantum-Si, Incorporated entered a new long-term lease for approximately 54,374 square feet of planned office, laboratory and manufacturing space in San Diego, California. The 10-year term is expected to begin around September 1, 2027, with a latest possible start of November 1, 2027.
Initial monthly base rent is about $315,369.20, or $5.80 per square foot, increasing roughly 3% each year. Base rent is fully abated for the first 20 months after commencement. The landlord will provide up to $17,127,810 as a tenant improvement allowance, while Quantum-Si pays prepaid rent of $434,448.26 and posts a $2,085,786.64 letter-of-credit security deposit. The lease supports ongoing development of the Proteus™ platform and expanded manufacturing capabilities and replaces existing San Diego space expected to expire on December 31, 2027.
Quantum-Si Inc. notified Nasdaq of the voluntary withdrawal of its warrant class from listing and registration on the Nasdaq Stock Market LLC pursuant to Rule 12d2-2. Nasdaq certified it followed exchange procedures and filed the Form 25 through an authorized representative.