Quantum-Si Inc
Close on Oct 19, 2026
- Market cap
- $237.40M
- P/E (TTM)
- –
- Dividend yield
- –
About Quantum-Si
Measuring & Controlling Devices, NEC, SIC 3829
Quantum-Si Incorporated is a life sciences company focused on proteomics research and single-molecule protein analysis. The company develops and commercializes next-generation protein sequencing platforms that enable massively parallel protein characterization at single-molecule resolution. Its primary product offerings include the Platinum and Platinum Pro benchtop sequencing instruments, cloud-based and on-instrument Platinum Analysis Software, and specialized consumables such as library preparation, barcoding, and semiconductor sequencing kits. The company serves researchers and clinicians across academic research institutions, biopharmaceutical companies, contract development and manufacturing organizations, government bodies, and industrial laboratories.
The company operates commercially through a direct sales team in the United States and uses a blend of direct sales and distributor arrangements across Europe. In addition, it maintains international distribution partnerships spanning multiple countries throughout the Middle East, Africa, Asia Pacific, and South America, alongside a North American distribution partnership with Avantor. The company is incorporated in Delaware, though its headquarters location is not specified in the text.
Summary of the business section of Quantum-Si's latest annual report, written by StockData.
Company profile
Company
- Legal name
- Quantum-Si Inc
- Founded
- 2013
- Headquarters
- Branford, CT
- Address
- 29 Business Park Drive 06405
- Phone
- (203) 458-7100
- Website
- quantum-si.com
- Employees
- 138, Dec 31, 2025
- Industry
- Measuring & Controlling Devices, NEC
- Incorporated in
- Delaware
- Fiscal year ends
- December 31
- Auditor
- Deloitte & Touche LLP, New York, New York
Stock & identifiers
- Ticker
- QSI
- Exchange
- Nasdaq
- IPO date
- Sep 4, 2020
- Shares outstanding
- 219M, Aug 11, 2026
- Public float
- $286.30M, Jun 30, 2025
- Filer category
- Non-accelerated filer<br>Smaller reporting company
- Stock splits
- 41-for-3, May 10, 2022
- SEC CIK
- 1816431
- CUSIP
- 74765K105
- ISIN
- US74765K1051
- EIN
- 85-1388175
Executives and directors
Officers and directors who filed ownership reports (Forms 3, 4, 5) in the last two years
| Name | Position | Shares owned |
|---|---|---|
| Jeffrey Alan Hawkins | President & CEO, Director | 3,639,950 |
| Jeffry R. Keyes | Chief Financial Officer | 1,716,684 |
| Christian LaPointe | GC & Corp. Secretary | 1,167,913 |
| John S. Vieceli | Chief Product Officer | 1,140,434 |
| Todd C. Bennett | Chief Commercial Officer | 681,521 |
| Kevin Rakin | Director | 1,220,512 |
| Brigid Makes | Director | 20,512 |
| Amir Jafri | Director | 115,942 |
| Paula Dowdy | Director | 269,107 |
| Charles R. Kummeth | Director | 855,000 |
| John P. Kenny | Director | 114,285 |
| Scott Mendel | Director | 141,843 |
| Ruth A. Fattori | Director | 170,512 |
| Jonathan M. Rothberg | Director | 33,644,178 |
CEO pay and shareholder return
Pay versus performance table from the proxy statement
| Fiscal year | CEO total pay | CEO pay actually paid | Other executives (avg) | Value of $100 invested | Peer group |
|---|---|---|---|---|---|
| FY2025 Jeffrey Hawkins | $3.18M | -$2.91M | $1.56M | $60 | – |
| FY2024 Jeffery Hawkins | $4.44M | $8.72M | $1.65M | $148 | – |
| FY2024 Jeffrey Hawkins | $4.44M | $8.72M | $1.65M | $148 | – |
| FY2023 Jeffery Hawkins | $1.05M | $1.92M | $1.35M | $110 | – |
| FY2023 Jeffrey Hawkins | $1.05M | $1.92M | $1.35M | $110 | – |
| FY2022 Jeffery Hawkins | $7.70M | $6.12M | $2.78M | $23 | – |
“Actually paid” adjusts reported pay for changes in the value of equity awards. Shareholder return assumes $100 invested at the start of the measurement period, as disclosed by the company.
Employees
Headcount reported in annual reports
“As of December 31, 2025 , we employed 138 full-time employees in the United States and 7 full-time employees internationally.”
Corporate history
Events identified from SEC filings