Free Trial

Quantum-Si (QSI) Insider Trading & Ownership

Quantum-Si logo
$0.92 +0.02 (+1.72%)
Closing price 04:00 PM Eastern
Extended Trading
$0.92 0.00 (-0.24%)
As of 07:54 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Quantum-Si (NASDAQ:QSI) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
22.04%
Number Of
Insiders Buying
(Last 12 Months)
2
Amount Of
Insider Buying
(Last 12 Months)
$564.40K
Number Of
Insiders Selling
(Last 12 Months)
5
Amount Of
Insider Selling
(Last 12 Months)
$513.90K
Get QSI Insider Trade Alerts

Want to know when executives and insiders are buying or selling Quantum-Si stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.

QSI Insider Buying and Selling by Quarter

Quantum-Si Insider and Congressional Trades History

Transaction DateInsiderBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails
4/21/2026Sell37,381$0.99$37,007.19  
4/20/2026Sell83,712$1.01$84,549.12  
4/20/2026Sell37,382$1.01$37,755.82  
3/23/2026Sell12,149$0.83$10,083.67  
3/23/2026Sell4,422$0.83$3,670.26  
3/23/2026Sell11,239$0.83$9,328.37  
3/20/2026Sell11,628$0.85$9,883.80  
3/20/2026Sell4,233$0.85$3,598.05  
3/20/2026Sell10,758$0.85$9,144.30  
3/5/2026Buy500,000$0.92$460,000.00  
3/5/2026
Paula Dowdy
Director
Buy109,890$0.95$104,395.50  
12/22/2025Sell23,707$1.28$30,344.96  
12/22/2025Sell8,627$1.28$11,042.56  
12/22/2025Sell21,927$1.28$28,066.56  
10/16/2025Sell26,095$3.07$80,111.65  
9/22/2025Sell10,643$1.68$17,880.24  
9/22/2025Sell3,873$1.68$6,506.64  
9/22/2025Sell9,843$1.68$16,536.24  
9/22/2025
Todd C Bennett
Insider
Sell18,482$1.68$31,049.76  
6/23/2025Sell23,705$1.61$38,165.05  
6/23/2025Sell8,624$1.61$13,884.64  
6/23/2025Sell21,923$1.61$35,296.03  
(Data available from 1/1/2013 forward)

QSI Insider Trading Activity - Frequently Asked Questions

The list of insiders at Quantum-Si includes Charles R Kummeth, Christian Lapointe, Grace Johnston, Jeffrey Alan Hawkins, Jeffry R Keyes, John S Vieceli, Jonathan M Rothberg, Paula Dowdy, and Todd C Bennett. Learn more on insiders at QSI.

22.04% of Quantum-Si stock is owned by insiders. Learn more on QSI's insider holdings.

The following insiders have purchased QSI shares in the last 24 months: Charles R Kummeth ($608,522.00), Christian Lapointe ($21,500.00), Jeffry R Keyes ($43,500.00), and Paula Dowdy ($104,395.50).

Insiders have purchased a total of 854,890 QSI shares in the last 24 months for a total of $777,917.50 bought.

The following insiders have sold QSI shares in the last 24 months: Grace Johnston ($9,077.19), Jeffrey Alan Hawkins ($223,859.57), Jeffry R Keyes ($125,455.30), John S Vieceli ($112,009.27), Jonathan M Rothberg ($11,791,043.43), and Todd C Bennett ($31,049.76).

Insiders have sold a total of 3,947,296 Quantum-Si shares in the last 24 months for a total of $12,292,494.52 sold.



This page (NASDAQ:QSI) was last updated on 5/11/2026 by MarketBeat.com Staff.
From Our Partners