Quantum-Si Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:QSI Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
21 Mar 25	SellUS$5,981	John Vieceli	Individual	4,317	US$1.39
21 Mar 25	SellUS$11,951	Jeffry Keyes	Individual	8,626	US$1.39
21 Mar 25	SellUS$6,783	Christian Lapointe	Individual	4,896	US$1.39
21 Mar 25	SellUS$32,846	Jeffrey Hawkins	Individual	23,707	US$1.39
23 Dec 24	SellUS$5,570	John Vieceli	Individual	4,306	US$1.29
24 Sep 24	SellUS$4,044	John Vieceli	Individual	4,309	US$0.95
12 Aug 24	BuyUS$148,459	Charles Kummeth	Individual	170,000	US$0.89
09 Aug 24	BuyUS$21,610	Christian Lapointe	Individual	25,000	US$0.86
09 Aug 24	BuyUS$43,465	Jeffry Keyes	Individual	50,000	US$0.87
09 Aug 24	BuyUS$21,273	Jeffrey Hawkins	Individual	25,000	US$0.85
24 Jun 24	SellUS$9,052	Grace Johnston	Individual	7,528	US$1.21

Insider Trading Volume

Insider Buying: QSI insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of QSI?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	743,935	0.406%
Individual Insiders	35,475,752	19.4%
Institutions	50,007,532	27.3%
General Public	96,912,386	52.9%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 29.2%.

Top Shareholders

Top 25 shareholders own 44.41% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
18.4%	Jonathan Rothberg	33,670,273	US$42.1m	-9.41%	no data
4.83%	ARK Investment Management LLC	8,848,650	US$11.1m	-25.3%	0.1%
4.61%	BlackRock, Inc.	8,437,647	US$10.5m	22.3%	no data
3.26%	Nikko Asset Management Co., Ltd.	5,965,208	US$7.5m	-60.4%	no data
3%	The Vanguard Group, Inc.	5,491,753	US$6.9m	9.02%	no data
1.88%	Morgan Stanley, Investment Banking and Brokerage Investments	3,446,042	US$4.3m	1,040%	no data
1.58%	HighCape Partners Management, L.P.	2,896,250	US$3.6m	0%	13.71%
1.31%	State Street Global Advisors, Inc.	2,405,019	US$3.0m	5.99%	no data
1.29%	Geode Capital Management, LLC	2,368,376	US$3.0m	2.22%	no data
0.55%	Susquehanna International Group, LLP, Asset Management Arm	1,002,873	US$1.3m	2,180%	no data
0.52%	Goldman Sachs Group, Investment Banking and Securities Investments	943,688	US$1.2m	352%	no data
0.46%	Northern Trust Global Investments	841,146	US$1.1m	5%	no data
0.41%	Fosun International Holdings Ltd.	743,935	US$929.9k	0%	no data
0.32%	UBS Asset Management AG	592,112	US$740.1k	1,100%	no data
0.3%	Renaissance Technologies LLC	544,956	US$681.2k	1,210%	no data
0.2%	GSA Capital Partners LLP	374,278	US$467.9k	233%	0.04%
0.19%	Charles Kummeth	355,000	US$443.7k	0%	no data
0.19%	Christian Lapointe	350,051	US$437.6k	25.3%	no data
0.17%	Charles Schwab Investment Management, Inc.	308,021	US$385.0k	0%	no data
0.17%	Simplex Trading, LLC, Asset Management Arm	306,769	US$383.5k	1,060%	0.01%
0.16%	Knollwood Investment Advisory, LLC	300,000	US$375.0k	0%	0.04%
0.16%	Bridgeway Capital Management, LLC	296,100	US$370.1k	-27.2%	0.01%
0.16%	Grace Johnston	295,940	US$369.9k	0%	no data
0.16%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	285,997	US$357.5k	-46.2%	no data
0.15%	BNY Asset Management	269,807	US$337.3k	21.3%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/04/13 23:03
End of Day Share Price	2025/04/11 00:00
Earnings	2024/12/31
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Quantum-Si incorporated is covered by 3 analysts. 3 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Scott Henry	Alliance Global Partners
Kyle Mikson	Canaccord Genuity
Swayampakula Ramakanth	H.C. Wainwright & Co.