Quest Diagnostics Ownership & Insider Activity

Quest Diagnostics (DGX) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 1.9% of shares outstanding. Institutional investors hold 75.3%. Over the past 90 days, insiders made 3 sales worth $5.7M.

Shares Outstanding

110.373M

Shares Float

110.056M

Insider Shares Owned

2.127M

Insider % Owned

1.9%

Institutional Shares Held

83.112M

Institutional % Held

75.3%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$5.7M total

Net Activity

Net Selling

Net Value (90d)

-$5.7M

Quest Diagnostics Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 26, 2026	Gary M Pfeiffer	DIRECTOR	SELL	1.203K	$243.00	$292K
Sep 1, 2026	James E. Davis	CEO AND PRESIDENT	SELL	10.000K	$242.72	$2.4M
Aug 28, 2026	Michael E Prevoznik	SVP & GENERAL COUNSEL	SELL	1.000K	$177.64	$3.0M
Jul 28, 2026	Mark E Delaney	SVP & CHIEF COMMERCIAL OFFICER	SELL	1.600K	$235.18	$376K
Jun 4, 2026	Karthik Kuppusamy	SVP, CLINICAL SOLUTIONS	SELL-OPTIONS	—	$162.11	$617K
Jun 1, 2026	James E. Davis	CEO AND PRESIDENT	SELL	10.000K	$194.14	$1.9M

Date	Member	Party	Chamber	Action	Amount
Mar 30, 2026	Alan Armstrong	R	Senate	Purchase	$1,001 - $15,000
Mar 27, 2026	Alan Armstrong	R	Senate	Purchase	$1,001 - $15,000
Nov 3, 2025	Julie Johnson	D	House	Sale	$1,001 - $15,000
Oct 30, 2025	Julie Johnson	D	House	Sale	$1,001 - $15,000
Oct 30, 2025	Julie Johnson	D	House	Purchase	$1,001 - $15,000
Jul 24, 2025	Julia Letlow	R	House	Sale	$1,001 - $15,000
Apr 28, 2025	Julia Letlow	R	House	Purchase	$1,001 - $15,000
Mar 10, 2025	Carol Miller	R	House	Sale	$1,001 - $15,000
Mar 10, 2025	Carol Miller	R	House	Sale	$15,001 - $50,000
Jan 24, 2025	Gilbert Ray Cisneros	D	House	Sale (Partial)	$1,001 - $15,000
Apr 4, 2024	Earl Blumenauer	D	House	Sale	$1,001 - $15,000
Jan 3, 2024	Tommy Tuberville	R	Senate	Sale (Partial)	$15,001 - $50,000
Dec 11, 2023	Thomas R. Carper	D	Senate	Sale (Partial)	$1,001 - $15,000