Vieceli John S. - Insider Non-Derivative Transactions at Quantum-Si Inc (QSI) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Dec 22, 2025, Vieceli John S.'s relationship to Quantum-Si Inc (QSI) is Officer (Chief Product Officer), and currently has 800,973 shares of Class A Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other QSI insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Vieceli John S. - Insider Non-Derivative Transactions of QSI Class A Common Stock

Vieceli John S. - Insider Non-Derivative Transactions at QSI

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Dec 23, 2025	Sell -- (Class A Common Stock)	21927	1.28	800973
Sep 24, 2025	Sell -- (Class A Common Stock)	9843	1.64	822900
Sep 23, 2025	Sell -- (Class A Common Stock)	9843	1.68	832743
Jun 24, 2025	Sell -- (Class A Common Stock)	21923	1.61	842586
Mar 22, 2025	Sell -- (Class A Common Stock)	4317	1.39	864509
Mar 13, 2025	Acquisition -- (Class A Common Stock)	708333	0	868826
Dec 24, 2024	Sell -- (Class A Common Stock)	4306	1.29	160493
Sep 25, 2024	Sell -- (Class A Common Stock)	2117	0.93	164799
Sep 24, 2024	Sell -- (Class A Common Stock)	2192	0.95	166916