QSI

Quantum-Si incorporated$1.35-0.10 (-7.19%)

Prev Close$1.46·MCap$290.5M·P/E—·Vol3.99M·Yield—

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Buys (12M)

$564.3K

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Sells (12M)

$454.0K

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Net Activity

Net Buyer

$110.2K

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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 15 insider sales totaling $454.0K. The most recent insider transaction was by Hawkins Jeffrey Alan (director, officer: President & CEO), who sold $22.6K worth of shares on Sep 23, 2026. Quantum-Si incorporated operates in the Healthcare sector, within the Medical - Devices industry, with a market cap of $290.5M.

QSI Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Sep 23, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	29,852	$0.76	$22.6K	3,649,659
Sep 23, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	7,665	$0.76	$5.8K	1,719,177
Sep 23, 2026	LaPointe Christian	officer: GC & Corp. Secretary	Sell	14,516	$0.76	$11.0K	1,172,634
Jun 24, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	22,621	$0.93	$21.0K	3,681,113
Jun 24, 2026	LaPointe Christian	officer: GC & Corp. Secretary	Sell	15,588	$0.93	$14.5K	1,190,223
Jun 24, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	8,233	$0.93	$7.6K	1,728,466
Jun 24, 2026	Vieceli John S.	officer: Chief Product Officer	Sell	30,223	$0.93	$28.1K	1,155,546
Apr 22, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	167,424	$1.00	$167.5K	3,776,135
Apr 22, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	74,763	$1.00	$74.8K	1,769,963
Mar 24, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	23,777	$0.84	$19.9K	3,871,996
Mar 24, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	8,655	$0.84	$7.2K	1,811,767
Mar 24, 2026	LaPointe Christian	officer: GC & Corp. Secretary	Sell	11,959	$0.84	$10.0K	1,204,127
Mar 24, 2026	Vieceli John S.	officer: Chief Product Officer	Sell	21,997	$0.84	$18.4K	1,181,896
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
Sep 23, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	29,852	$0.76	$22.6K	3,649,659
Sep 23, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	7,665	$0.76	$5.8K	1,719,177
Sep 23, 2026	LaPointe Christian	officer: GC & Corp. Secretary	Sell	14,516	$0.76	$11.0K	1,172,634
Jun 24, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	22,621	$0.93	$21.0K	3,681,113
Jun 24, 2026	LaPointe Christian	officer: GC & Corp. Secretary	Sell	15,588	$0.93	$14.5K	1,190,223
Jun 24, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	8,233	$0.93	$7.6K	1,728,466
Jun 24, 2026	Vieceli John S.	officer: Chief Product Officer	Sell	30,223	$0.93	$28.1K	1,155,546
Apr 22, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	167,424	$1.00	$167.5K	3,776,135
Apr 22, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	74,763	$1.00	$74.8K	1,769,963
Mar 24, 2026	Hawkins Jeffrey Alan	director, officer: President & CEO	Sell	23,777	$0.84	$19.9K	3,871,996
Mar 24, 2026	Keyes Jeffry R.	officer: Chief Financial Officer	Sell	8,655	$0.84	$7.2K	1,811,767
Mar 24, 2026	LaPointe Christian	officer: GC & Corp. Secretary	Sell	11,959	$0.84	$10.0K	1,204,127
Mar 24, 2026	Vieceli John S.	officer: Chief Product Officer	Sell	21,997	$0.84	$18.4K	1,181,896
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