Skip to content
QUEST DIAGNOSTICS INC (DGX) Stock Price, Key Stats & Insider Trading
Home / Companies / DGX DGX
QUEST DIAGNOSTICS INC (DGX) S&P 500 XNYS SERVICES-MEDICAL LABORATORIES Net insider selling (90d)
Latest DGX Insider Trades
About QUEST DIAGNOSTICS INC (DGX) Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US. The company generates over 97% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,400 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk-assessment services, and information technology solutions.
Headquarters SECAUCUS, NJ
Employees 57,000
Listed 1996
Exchange XNYS https://www.questdiagnostics.com SEC filings for DGX on EDGAR
90-Day SEC Filing Activity Form 4 transaction type Transactions Shares Total value Open-market sale 3 19,747 $3.95M Grant or award 3 318 Option exercise 4 16,294
DGX Insider Transactions (Form 4) 84 120 Form 4 filings on record, the earliest from Oct 3, 2024, newest first. Filing history page 2 of 3.
Date Insider Transaction Security Shares Price Value Mar 9, 2026 TW Timothy C. Wentworth - Director Grant or award Common Stock
Recent DGX Form 8-K Filings 5
Recent DGX Form 144 Notices of Proposed Sale 3 A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
Filed Filer Relationship Shares Market value Notice Aug 28, 2026 PREVOZNIK MICHAEL E Officer 22,677 $5.51M View on EDGAR Jul 28, 2026 - -
DGX Insider Trading - FAQ
What is the latest insider trade for DGX? QUEST DIAGNOSTICS INC (DGX) had 12 insider filings in the last 90 days, with the most recent on 2026-07-29. The full record for DGX runs to 120 Form 4 filings, the earliest from 2024-10-03. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
How many insiders are buying DGX stock? No insider purchases of DGX were filed in the last 90 days.
How many insiders are selling DGX stock? 3 insider sales of DGX were filed in the last 90 days, totaling $3.95M.
Where can I see DGX SEC filings (Form 4, 10-K, 10-Q, 8-K)? This page tracks DGX Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
How can I follow DGX insider buys? Create a free InsiderAlpha account and press Watch on this page to add DGX to your watchlist. A free account also opens the full scored daily plan with every past day and 3 months of price history. No card is required. Sign up at https://insideralpha.ai/register.
More Health Care Companies with Insider Activity Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
Related Companies - Recent Insider Activity What is SEC Form 4? The filing insiders must submit within two business days of a trade, and how to read its transaction codes. Track DGX insider activity as it files Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
Sign up free - Officer
Market cap $26.79B
P/E ratio 25.80
Dividend yield 1.42%
Average volume 929.6K
52 week high $247.19
52 week low $171.18
Today's high $245.28
Today's low $242.27
Open $245.17
Volume 639.9K
Previous close $244.61
Shares outstanding 110.37M Market cap
$26.79B
57,000 employees
DGX Insider Sentiment - Last 90 Days Share of open-market insider dollar volume that was buying versus selling, from SEC Form 4 filings.
0% Buying 100% Selling
0 insider purchases totaling $0 against 3 sales totaling $3.95M.
Most-Active DGX Insiders - Last 90 Days 10 Other acquisition / disposition 6 155
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
Mar 4, 2026 SS Sam Samad - Officer Grant or award Common Stock 13,947 $204.86 $2.86M
Mar 4, 2026 SS Sam Samad - Officer Tax withholding / forfeiture Common Stock 7,720 $204.86 $1.58M
Mar 4, 2026 CD Catherine T. Doherty - Officer Tax withholding / forfeiture Common Stock 5,806 $204.86 $1.19M
Mar 4, 2026 MD Mark E. Delaney - Officer Grant or award Common Stock 5,682 $204.86 $1.16M
Mar 4, 2026 MD Mark E. Delaney - Officer Tax withholding / forfeiture Common Stock 2,326 $204.86 $477K
Mar 4, 2026 MP Michael E. Prevoznik - Officer Tax withholding / forfeiture Common Stock 3,354 $204.86 $687K
Mar 4, 2026 JD J. E. Davis - Officer Grant or award Common Stock 51,652 $204.86 $10.58M
Mar 4, 2026 JD J. E. Davis - Officer Tax withholding / forfeiture Common Stock 26,414 $204.86 $5.41M
Mar 5, 2026 PP Patrick Plewman - Officer Open-market sale Common Stock 2,855 $206.21 $589K
Mar 4, 2026 PP Patrick Plewman - Officer Grant or award Common Stock 5,682 $204.86 $1.16M
Mar 4, 2026 PP Patrick Plewman - Officer Tax withholding / forfeiture Common Stock 2,827 $204.86 $579K
Mar 4, 2026 MD Michael J. Deppe - Officer Grant or award Common Stock 1,473 $204.86 $302K
Mar 4, 2026 MD Michael J. Deppe - Officer Tax withholding / forfeiture Common Stock 750 $204.86 $154K
Mar 4, 2026 KK Karthik Kuppusamy - Officer Open-market sale Common Stock 2,628 $204.86 $538K
Mar 2, 2026 SS Sam Samad - Officer Tax withholding / forfeiture Common Stock 869 $204.86 $178K
Mar 2, 2026 JD J. E. Davis - Officer Tax withholding / forfeiture Common Stock 2,968 $204.86 $608K
Mar 2, 2026 JD J. E. Davis - Officer Open-market sale Common Stock 10,000 $212.52 $2.13M
Mar 2, 2026 PP Patrick Plewman - Officer Tax withholding / forfeiture Common Stock 230 $204.86 $47K
Mar 3, 2026 PP Patrick Plewman - Officer Open-market sale Common Stock 410 $207.73 $85K
Mar 2, 2026 KK Karthik Kuppusamy - Officer Tax withholding / forfeiture Common Stock 205 $204.86 $42K
Mar 2, 2026 MD Mark E. Delaney - Officer Tax withholding / forfeiture Common Stock 188 $204.86 $39K
Mar 2, 2026 MD Michael J. Deppe - Officer Tax withholding / forfeiture Common Stock 88 $204.86 $18K
Feb 18, 2026 PP Patrick Plewman - Officer Grant or award Common Stock 1,952 $0.00 -
Feb 18, 2026 PP Patrick Plewman - Officer Tax withholding / forfeiture Common Stock 244 $210.01 $51K
Feb 18, 2026 PP Patrick Plewman - Officer Tax withholding / forfeiture Common Stock 293 $206.99 $61K
Feb 19, 2026 PP Patrick Plewman - Officer Open-market sale Common Stock 958 $204.83 $196K
Feb 18, 2026 PP Patrick Plewman - Officer Grant or award Non-Qualifed Stock Option (right to buy) 9,009 $0.00 -
Jan 28, 2026 SS Sam Samad - Officer Grant or award Common Stock 69 $183.51 $13K
Feb 18, 2026 SS Sam Samad - Officer Grant or award Non-Qualifed Stock Option (right to buy) 18,303 $0.00 -
Feb 18, 2026 SS Sam Samad - Officer Grant or award Common Stock 3,965 $0.00 -
Feb 18, 2026 SS Sam Samad - Officer Tax withholding / forfeiture Common Stock 855 $210.01 $180K
Feb 18, 2026 SS Sam Samad - Officer Tax withholding / forfeiture Common Stock 1,010 $206.99 $209K
Feb 18, 2026 MP Michael E. Prevoznik - Officer Grant or award Non-Qualifed Stock Option (right to buy) 9,289 $0.00 -
Feb 18, 2026 JD J. E. Davis - Officer Grant or award Common Stock 15,857 $0.00 -
Feb 18, 2026 JD J. E. Davis - Officer Tax withholding / forfeiture Common Stock 2,396 $210.01 $503K
Feb 18, 2026 JD J. E. Davis - Officer Tax withholding / forfeiture Common Stock 3,788 $206.99 $784K
Feb 18, 2026 JD J. E. Davis - Officer Grant or award Non-Qualifed Stock Option (right to buy) 73,225 $0.00 -
Feb 18, 2026 CD Catherine T. Doherty - Officer Grant or award Non-Qualifed Stock Option (right to buy) 13,514 $0.00 -
Feb 18, 2026 KK Karthik Kuppusamy - Officer Tax withholding / forfeiture Common Stock 252 $210.01 $53K
Feb 18, 2026 KK Karthik Kuppusamy - Officer Tax withholding / forfeiture Common Stock 259 $206.99 $54K
Feb 18, 2026 KK Karthik Kuppusamy - Officer Grant or award Non-Qualifed Stock Option (right to buy) 9,853 $0.00 -
Feb 18, 2026 MD Mark E. Delaney - Officer Grant or award Common Stock 1,586 $0.00 -
Feb 18, 2026 MD Mark E. Delaney - Officer Tax withholding / forfeiture Common Stock 205 $210.01 $43K
Feb 18, 2026 MD Mark E. Delaney - Officer Tax withholding / forfeiture Common Stock 230 $206.99 $48K
Feb 18, 2026 MD Mark E. Delaney - Officer Grant or award Non-Qualifed Stock Option (right to buy) 7,332 $0.00 -
Feb 18, 2026 MD Michael J. Deppe - Officer Tax withholding / forfeiture Common Stock 83 $210.01 $17K
Feb 18, 2026 MD Michael J. Deppe - Officer Tax withholding / forfeiture Common Stock 99 $206.99 $20K
Feb 18, 2026 MD Michael J. Deppe - Officer Grant or award Non-Qualifed Stock Option (right to buy) 1,688 $0.00 -
Feb 13, 2026 CD Catherine T. Doherty - Officer Option exercise Non-Qualifed Stock Option (right to buy) 26,165 $112.17 $2.93M
Jan 28, 2026 PP Patrick Plewman - Officer Grant or award Common Stock 48 $183.51 $9K
Feb 10, 2026 PP Patrick Plewman - Officer Option exercise Common Stock 5,662 $121.81 $690K
Feb 10, 2026 PP Patrick Plewman - Officer Open-market sale Common Stock 5,662 $204.00 $1.16M
Feb 10, 2026 PP Patrick Plewman - Officer Option exercise Non-Qualifed Stock Option (right to buy) 5,662 $121.81 $690K
DSG $ACON
Aclarion, Inc.
Mark E. Delaney - OfficerOpen-market sale$376K
Karthik Kuppusamy - OfficerOpen-market sale$1.63M
Timothy C. Wentworth - Director
