InsiderFlow

John S. Vieceli

QSI

John S. Vieceli serves as officer: Chief Product Officer at Quantum-Si incorporated (QSI). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

7 trades

$130.0K

Net Position

Net Seller

$130.0K

Companies Traded

2

QSI, QSIAW

Active Period

Sep 2024 – Mar 2026

7 total trades

Most Recent

Sell QSI

Mar 24, 2026 · $18.4K

John S. Vieceli's Insider Trading at Quantum-Si incorporated (QSI)

Buys

0 · $0.00

Sells

6 · $102.0K

Total Shares Bought

0

Total Shares Sold

76,538

QSI Price Chart
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DateTypeValue
Mar 24, 2026 Sell$18.4K
Sep 22, 2025 Sell$32.7K
Jun 23, 2025 Sell$35.4K
Mar 21, 2025 Sell$6.0K
Dec 26, 2024 Sell$5.6K
Sep 25, 2024 Sell$4.0K

John S. Vieceli's Insider Trading at Quantum-Si Incorporated Warrant (QSIAW)

Buys

0 · $0.00

Sells

1 · $28.0K

Total Shares Bought

0

Total Shares Sold

21,927

QSIAW Price Chart
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DateTypeValue
Dec 22, 2025 Sell$28.0K

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QSISell · Mar 24, 2026

Paula Dowdy

director

QSIBuy · Mar 9, 2026

Charles R. Kummeth

director

QSIBuy · Mar 9, 2026

Jeffry R. Keyes

Chief Financial Officer

QSIAWSell · Dec 22, 2025

Todd C. Bennett

Chief Commercial Officer

QSISell · Sep 22, 2025

Christian LaPointe

GC & Corp. Secretary

QSIAWSell · Jun 23, 2025

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