Quantum-Si incorporated (QSI)
NASDAQ: QSI · Real-Time Price · USD
0.855
-0.003 (-0.29%)
At close: Jun 26, 2026, 4:00 PM EDT
0.860
+0.005 (0.61%)
After-hours: Jun 26, 2026, 7:59 PM EDT

Company Description

Quantum-Si incorporated, a life sciences company, develops proprietary, universal, and single-molecule detection platform applied to proteomics to enable next-gen protein sequencing (NGPS).

The company offers Platinum and Platinum Pro NGPS instruments for single-molecule, amino acid level resolution, and automated data analysis; library preparation kits to prepare a customer’s protein sample for sequencing; and sequencing kits, which contain the reagents and consumables used to perform NGPS.

It also provides Platinum analysis software, a cloud-based solution that automates data analysis workflows and visualizes the sequencing results.

The company was founded in 2013 and is headquartered in Branford, Connecticut.

Quantum-Si incorporated
Quantum-Si incorporated logo
Country United States
Founded 2013
Industry Medical Devices
Sector Healthcare
Employees 145
CEO Jeffrey Hawkins

Contact Details

Address:
29 Business Park Drive
Branford, Connecticut 06405
United States
Phone 866 688 7374
Website quantum-si.com

Stock Details

Ticker Symbol QSI
Exchange NASDAQ
Stock Type Common Stock
Share Class Class A Shares
Fiscal Year January - December
Reporting Currency USD
CIK Code 0001816431
CUSIP Number 74765K105
ISIN Number US74765K1051
Employer ID 85-1388175
SIC Code 3829

Key Executives

Name Position
Jeffrey Alan Hawkins President, Chief Executive Officer and Director
Dr. Jonathan M. Rothberg Ph.D. Founder and Executive Director
Jeffry R. Keyes CPA Chief Financial Officer and Treasurer
Dr. John S. Vieceli Ph.D. Chief Product Officer
Todd Rearick Chief Technology Officer
Dr. Christian Lapointe J.D., Ph.D. General Counsel and Corporate Secretary
Lindsay Thompson Chief Human Resources Officer

Latest SEC Filings

Date Type Title
Jun 24, 2026 144 Filing
Jun 24, 2026 144 Filing
Jun 24, 2026 144 Filing
Jun 24, 2026 144 Filing
Jun 24, 2026 8-K Current Report
Jun 10, 2026 25-NSE Filing
May 22, 2026 SD Form - SD
May 15, 2026 8-K Current Report
May 7, 2026 10-Q Quarterly Report
May 7, 2026 8-K Current Report