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.
This page compiles U.S. SEC filings for Quantum-Si Incorporated (Nasdaq: QSI), a proteomics technology and life sciences company focused on single-molecule protein analysis and Next-Generation Protein Sequencing. Here, investors can review how Quantum-Si reports its financial performance, capital structure, and material corporate events in official regulatory documents.
Quantum-Si’s periodic reports, such as its quarterly results furnished via Form 8-K, provide detail on product and service revenue, cost of revenue, research and development spending, selling, general and administrative expenses, and items like lease termination or legal settlement expenses. These filings also include condensed consolidated balance sheets and statements of operations, along with non-GAAP metrics such as adjusted total operating expenses and adjusted EBITDA, together with reconciliations to GAAP measures.
Capital markets and financing activities are documented in Forms 8-K and related registration statements. Examples include a registered direct offering of Class A common stock and pre-funded warrants, an at-the-market Sales Agreement for Class A common stock, and the termination of a prior equity distribution agreement. Filings describe intended uses of proceeds, such as funding the Proteus platform development, commercialization, manufacturing development, research and development, and general corporate purposes.
Other material agreements and corporate actions, including lease terminations, settlement and mutual release agreements, and inducement equity awards under the 2023 Inducement Equity Incentive Plan, are also reported in Quantum-Si’s SEC filings. Stock Titan’s interface adds AI-powered summaries that highlight key terms, financial impacts, and timelines from these documents, helping readers quickly understand complex agreements, capital raises, and operating decisions without reading every line of each filing.
Quantum-Si Incorporated submitted a Form 144 notice relating to proposed sales of Class A Common Stock. The filing lists a sale of 21,927 shares on 12/22/2025 and discloses vested equity items tied to restricted stock unit vesting of 10,838 and 44,271 shares on 03/15/2024 and 03/12/2025, respectively. The broker listed is Morgan Stanley Smith Barney LLC.
Quantum-Si Incorporated submitted a Form 144 notice concerning proposed dispositions of Class A Common Stock through Morgan Stanley Smith Barney LLC on 03/20/2026 for shares listed as 11959 and an amount shown as 10012.23 with exchange noted as NASDAQ.
The filing lists prior restricted stock unit vesting events of 18,063 shares on 03/15/2024 and 26,042 shares on 03/12/2025, and a sale during the past three months of 11,951 shares on 12/22/2025 with a figure shown as 15249.48.
Quantum-Si Incorporated subject of a Form 144 notice relating to proposed sales of Class A Common Stock by Morgan Stanley Smith Barney LLC. The filing lists 8,655 shares and references prior restricted stock unit vesting of 21,676 units on 03/15/2024.
The notice also records sales in the past three months on 12/22/2025 of 8,627 shares. The filing is a broker-serviced resale notice under the SEC resale rules.
Quantum-Si Incorporated filed a Form 144 reporting an intended sale of Class A Common Stock through Morgan Stanley Smith Barney LLC. The filing lists 59,609 shares tied to a Restricted Stock Unit Vesting event dated 03/15/2024. It also reports prior sales of 23,707 shares on 12/22/2025 as securities sold during the past three months. The broker listed is Morgan Stanley Smith Barney LLC with an address at 1 New York Plaza, New York, NY.
Quantum-Si Inc reported that Chief Financial Officer Jeffry R. Keyes received new equity awards. He was granted stock options for 780,847 shares of Class A common stock at an exercise price of $0.976 per share, expiring on March 12, 2036.
Keyes was also granted 652,803 restricted stock units, increasing his direct common stock holdings to 1,816,000 shares after the grant. The RSUs vest in four equal annual installments beginning on April 20, 2027, while the option vests in equal quarterly installments starting on June 20, 2026, in each case subject to his continued service.
Quantum-Si Inc Chief Product Officer John S. Vieceli received new equity awards. On March 12, 2026, he was granted options to buy 468,508 shares of Class A common stock at an exercise price of $0.976 per share, vesting in equal quarterly installments beginning on June 20, 2026 until fully vested, subject to continued service.
He also received 391,681 restricted stock units, each representing one share of common stock upon vesting, on the same vesting schedule starting June 20, 2026. Following these awards, Vieceli directly holds 1,192,654 shares of Class A common stock. These are compensation-related grants rather than open-market purchases or sales.
Quantum-Si Inc President & CEO Jeffrey Alan Hawkins reported equity compensation awards rather than open-market trades. He received a stock option covering 1,561,695 shares of Class A common stock at an exercise price of $0.976 per share, expiring on March 12, 2036. The option vests in equal quarterly installments beginning on June 20, 2026, subject to continued service. He also received 1,305,606 restricted stock units, each representing one share of common stock, which vest in four equal annual installments starting on April 20, 2027, subject to continued service. Following the RSU grant, his direct holdings of Class A common stock increased to 3,883,624 shares.
Quantum-Si Inc reported that its General Counsel and Corporate Secretary, Christian LaPointe, received new equity awards. He was granted 261,121 shares of Class A common stock in the form of restricted stock units and a stock option for 312,339 shares at an exercise price of $0.976 per share. Both the RSUs and the option vest in equal quarterly installments beginning on June 20, 2026, subject to continued service. Following these awards, LaPointe directly owns 1,209,976 shares of Class A common stock.
Quantum-Si Inc director Charles R. Kummeth reported an open-market purchase of 500,000 shares of Class A common stock on March 5, 2026. The weighted average purchase price was $0.9196 per share, with individual trades executed between $0.8906 and $0.9735 per share. Following this transaction, he directly holds 855,000 shares of Quantum-Si common stock.
Quantum-Si Inc director Paula Dowdy purchased Class A common stock in an open-market transaction. On March 5, 2026, she bought 109,890 shares at a weighted average price of $0.9505 per share, and held 269,107 shares directly after the trade.
The footnote explains that the $0.9505 figure is a weighted average, with actual purchase prices ranging from $0.9051 to $0.9730 per share. Detailed price breakdowns are available upon request from regulators, the company, or its security holders.