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

8 trades

$158.1K

Net Position

Net Seller

$158.1K

Companies Traded

QSI, QSIAW

Active Period

Sep 2024 – Jun 2026

8 total trades

Most Recent

Sell QSI

Jun 24, 2026 · $28.1K

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

Buys

0 · $0.00

Sells

7 · $130.1K

Total Shares Bought

Total Shares Sold

106,761

QSI Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Jun 24, 2026	Sell	30,223	$0.93	$28.1K	1,155,546
Mar 24, 2026	Sell	21,997	$0.84	$18.4K	1,181,896
Sep 22, 2025	Sell	19,686	$1.66	$32.7K	0
Jun 23, 2025	Sell	21,923	$1.61	$35.4K	0
Mar 21, 2025	Sell	4,317	$1.39	$6.0K	0
Dec 26, 2024	Sell	4,306	$1.29	$5.6K	160,493
Sep 25, 2024	Sell	4,309	$0.94	$4.0K	166,916