QSI

Quantum-Si incorporated$0.92-0.03 (-3.16%)

Prev Close$0.94·MCap$179.1M·P/E—·Vol6.30M·Yield—

▲

Buys (12M)

$564.3K

▼

Sells (12M)

$337.0K

◆

Net Activity

Net Buyer

$227.3K

●

Active Insiders

last 12 mo

Over the past 12 months, insider activity at Quantum-Si incorporated (QSI) has been mixed between buying and selling, with 2 insider purchases totaling $564.3K and 12 insider sales totaling $337.0K. The most recent insider transaction was by Keyes Jeffry R. (officer: Chief Financial Officer), who sold $74.8K worth of shares on Apr 22, 2026. Quantum-Si incorporated operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $179.1M.

QSI Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Apr 22, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	74,763	$1.00	$74.8K	1,769,963
Mar 24, 2026	Vieceli John S.	officer: Chief Product Officer	Sell	21,997	$0.84	$18.4K	1,181,896
Mar 24, 2026	LaPointe Christian	officer: GC & Corp. Secretary	Sell	11,959	$0.84	$10.0K	1,204,127
Mar 24, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	8,655	$0.84	$7.2K	1,811,767
Mar 24, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	23,777	$0.84	$19.9K	3,871,996
Mar 9, 2026	Dowdy Paula	director	Buy	109,890	$0.95	$104.5K	269,107+69%
Mar 9, 2026	Kummeth Charles R.	director	Buy	500,000	$0.92	$459.8K	855,000+141%
Dec 22, 2025	Hawkins Jeffrey Alan	President & CEO	Sell	23,707	$1.28	$30.3K	0
Dec 22, 2025	LaPointe Christian	GC & Corp. Secretary	Sell	11,951	$1.28	$15.2K	0
Sep 22, 2025	Bennett Todd C.	Chief Commercial Officer	Sell	36,964	$1.66	$61.3K	0
Sep 22, 2025	LaPointe Christian	GC & Corp. Secretary	Sell	10,728	$1.66	$17.8K	0
Sep 22, 2025	Vieceli John S.	Chief Product Officer	Sell	19,686	$1.66	$32.7K	0
Jun 23, 2025	Keyes Jeffry R.	Chief Financial Officer	Sell	8,624	$1.61	$13.9K	0
Jun 23, 2025	Vieceli John S.	Chief Product Officer	Sell	21,923	$1.61	$35.4K	0
Mar 21, 2025	Hawkins Jeffrey Alan	President & CEO	Sell	23,707	$1.39	$32.8K	0
Mar 21, 2025	Keyes Jeffry R.	Chief Financial Officer	Sell	8,626	$1.39	$12.0K	0
Mar 21, 2025	Vieceli John S.	Chief Product Officer	Sell	4,317	$1.39	$6.0K	0
Dec 31, 2024	ROTHBERG JONATHAN M		Sell	1,710,820	$3.32	$5.69M0.9% OS	1,292,313-57%
Dec 26, 2024	Vieceli John S.	Chief Product Officer	Sell	4,306	$1.29	$5.6K	160,493
Sep 25, 2024	Vieceli John S.	Chief Product Officer	Sell	4,309	$0.94	$4.0K	166,916

QSI Insider Buying Activity

The following table shows recent insider purchases of Quantum-Si incorporated (QSI) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Mar 9, 2026	Dowdy Paula	director	Buy	109,890	$0.95	$104.5K	269,107+69%
Mar 9, 2026	Kummeth Charles R.	director	Buy	500,000	$0.92	$459.8K	855,000+141%

QSI Insider Selling Activity

The following table shows recent insider sales of Quantum-Si incorporated (QSI) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Apr 22, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	74,763	$1.00	$74.8K	1,769,963
Mar 24, 2026	Vieceli John S.	officer: Chief Product Officer	Sell	21,997	$0.84	$18.4K	1,181,896
Mar 24, 2026	LaPointe Christian	officer: GC & Corp. Secretary	Sell	11,959	$0.84	$10.0K	1,204,127
Mar 24, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	8,655	$0.84	$7.2K	1,811,767
Mar 24, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	23,777	$0.84	$19.9K	3,871,996
Dec 22, 2025	Hawkins Jeffrey Alan	President & CEO	Sell	23,707	$1.28	$30.3K	0
Dec 22, 2025	LaPointe Christian	GC & Corp. Secretary	Sell	11,951	$1.28	$15.2K	0
Sep 22, 2025	Bennett Todd C.	Chief Commercial Officer	Sell	36,964	$1.66	$61.3K	0
Sep 22, 2025	LaPointe Christian	GC & Corp. Secretary	Sell	10,728	$1.66	$17.8K	0
Sep 22, 2025	Vieceli John S.	Chief Product Officer	Sell	19,686	$1.66	$32.7K	0
Jun 23, 2025	Keyes Jeffry R.	Chief Financial Officer	Sell	8,624	$1.61	$13.9K	0
Jun 23, 2025	Vieceli John S.	Chief Product Officer	Sell	21,923	$1.61	$35.4K	0
Mar 21, 2025	Hawkins Jeffrey Alan	President & CEO	Sell	23,707	$1.39	$32.8K	0
Mar 21, 2025	Keyes Jeffry R.	Chief Financial Officer	Sell	8,626	$1.39	$12.0K	0
Mar 21, 2025	Vieceli John S.	Chief Product Officer	Sell	4,317	$1.39	$6.0K	0
Dec 31, 2024	ROTHBERG JONATHAN M		Sell	1,710,820	$3.32	$5.69M0.9% OS	1,292,313-57%
Dec 26, 2024	Vieceli John S.	Chief Product Officer	Sell	4,306	$1.29	$5.6K	160,493
Sep 25, 2024	Vieceli John S.	Chief Product Officer	Sell	4,309	$0.94	$4.0K	166,916