Quest Diagnostics Inc

Ownership Transactions Reported by 23 Insiders

Symbol
DGX on NYSE
Industry
Services-Medical Laboratories
Location
500 Plaza Drive, Secaucus, NJ

Insiders trading volume in the past year

Quest Diagnostics Inc executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Stephen Rusckowski Director $47.9M Mar 6, 2023
E. Davis CEO and President, Director $27.2M -$6.6M -19.5% Nov 5, 2025
Catherine T. Doherty EVP, Regional Businesses $13.8M -$6.84M -33.2% Mar 5, 2025
Mark Guinan Executive Vice President & CFO $13.1M Mar 7, 2022
Michael E. Prevoznik SVP & General Counsel $8.21M -$12.2M -59.8% Sep 26, 2025
Timothy M. Ring Director $7.95M Oct 1, 2025
Manner Carrie Eglinton SVP, Advanced Diagnostics $7.59M Mar 7, 2022
Sam Samad Executive Vice President & CFO $6.37M Oct 21, 2025
Michael J. Deppe SVP, Corp. Controller & CAO $6.24M Mar 3, 2025
Gary M. Pfeiffer Director $5.37M -$270K -4.79% Oct 22, 2025
Timothy L. Main Director $4.65M May 15, 2025
Gail R. Wilensky Director $4.16M May 17, 2023
Vicky B. Gregg Director $3.46M -$206K -5.62% Oct 21, 2025
Patrick Plewman SVP for Diagnostic Services $2.9M -$2.57M -47% Oct 21, 2025
Mark E. Delaney SVP & Chief Commercial Officer $2.48M -$1.86M -42.8% Nov 18, 2025
Karthik Kuppusamy SVP, Clinical Solutions $1.96M -$2.19M -52.8% Oct 21, 2025
Denise M. Morrison Director $1.9M May 15, 2025
Wright Lassiter III Director $1.57M Oct 1, 2025
Mark A. Gardner SVP of Molecular Gen & Oncol $1.54M Sep 24, 2024
Tracey Doi Director $1.15M May 15, 2025
Helen Torley Director $769K May 25, 2021
Luis Diaz Director $716K May 15, 2025
Robert B. Carter Director $510K Oct 21, 2025

Recent Insider Transactions by Companies or Individuals for Quest Diagnostics Inc

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.