GUINAN MARK

DGX

GUINAN MARK serves as Executive Vice President & CFO at Quest Diagnostics Incorporated (DGX). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

4 trades

$2.58M

Net Position

Net Seller

$2.58M

Companies Traded

DGX

Active Period

Feb 2021 – Mar 2022

4 total trades

Most Recent

Sell DGX

Mar 7, 2022 · $1.36M

GUINAN MARK's Insider Trading at Quest Diagnostics Incorporated (DGX)

Buys

0 · $0.00

Sells

4 · $2.58M

Total Shares Bought

Total Shares Sold

20,616

DGX Price Chart

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Date	Type	Shares	Avg Price	Value
Mar 7, 2022	Sell	10,475	$130.09	$1.36M
Feb 23, 2022	Sell	2,367	$130.13	$308.0K
Mar 9, 2021	Sell	6,403	$115.42	$739.0K
Feb 23, 2021	Sell	1,371	$121.17	$166.1K

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Patrick Plewman

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SAMAD SAM

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J. E. Davis

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DGXSell · Feb 18, 2026

DELANEY MARK E

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DGXSell · Feb 18, 2026

Michael J Deppe

SVP, Corp. Controller & CAO

DGXSell · Feb 18, 2026

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