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QUEST DIAGNOSTICS INC — Insider Transactions

Form 4 filings by directors, officers, and 10%+ shareholders

SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.

Overview All Filings Annual Quarterly Insiders
Insider Title Type Shares Price Value Owns After Date
Davis J. E. CEO and President Sale 41,004 $192.27 $7,883,839 125,227 Nov 25, 2025
Gregg Vicky B Sale 1,250 $191.76 $239,700 17,037 Nov 25, 2025
DELANEY MARK E SVP & Chief Commercial Officer Option Exercise 100 $143.33 $14,333 15,476 Nov 18, 2025
Davis J. E. CEO and President Tax Withholding 7,143 $175.57 $1,254,097 120,480 Nov 5, 2025
PFEIFFER GARY M Sale 1,482 $182.40 $270,317 29,431 Oct 22, 2025
SAMAD SAM Executive Vice President & CFO Award / Grant 68 $189.08 $12,857 25,741 Oct 21, 2025
Plewman Patrick SVP for Diagnostic Services Award / Grant 46 $189.08 $8,698 15,333 Oct 21, 2025
KUPPUSAMY KARTHIK SVP, Clinical Solutions Award / Grant 15 $189.08 $2,836 8,379 Oct 21, 2025
Gregg Vicky B Award / Grant 70 $189.08 $13,236 18,287 Oct 21, 2025
DELANEY MARK E SVP & Chief Commercial Officer Award / Grant 15 $189.08 $2,836 7,530 Oct 21, 2025
CARTER ROBERT B Award / Grant 6 $189.09 $1,135 2,698 Oct 21, 2025
PREVOZNIK MICHAEL E SVP & General Counsel Sale 144 $188.66 $27,167 38,117 Sep 26, 2025
PREVOZNIK MICHAEL E SVP & General Counsel Option Exercise 175 $103.57 $18,125 38,292 Sep 23, 2025
Plewman Patrick SVP for Diagnostic Services Sale 1,975 $185.00 $365,375 15,269 Aug 21, 2025
Plewman Patrick SVP for Diagnostic Services Sale 4,532 $183.00 $829,356 17,244 Aug 19, 2025
Plewman Patrick SVP for Diagnostic Services Sale 1,975 $180.00 $355,500 17,244 Aug 15, 2025
KUPPUSAMY KARTHIK SVP, Clinical Solutions Tax Withholding 123 $175.91 $21,637 8,338 Aug 13, 2025
Plewman Patrick SVP for Diagnostic Services Option Exercise 3,560 $86.63 $308,403 24,745 Aug 6, 2025
KUPPUSAMY KARTHIK SVP, Clinical Solutions Option Exercise 5,224 $112.17 $585,976 15,884 Jul 30, 2025
SAMAD SAM Executive Vice President & CFO L 72 $167.50 $12,060 25,673 Jul 21, 2025
Plewman Patrick SVP for Diagnostic Services L 80 $167.49 $13,399 21,185 Jul 21, 2025
KUPPUSAMY KARTHIK SVP, Clinical Solutions L 27 $167.50 $4,523 10,660 Jul 21, 2025
Lassiter Wright III L 7 $167.51 $1,173 9,044 Jul 21, 2025
Gregg Vicky B L 79 $167.50 $13,233 18,217 Jul 21, 2025
DELANEY MARK E SVP & Chief Commercial Officer L 17 $167.49 $2,847 7,515 Jul 21, 2025
CARTER ROBERT B L 7 $167.51 $1,173 2,692 Jul 21, 2025
SAMAD SAM Executive Vice President & CFO Tax Withholding 850 $169.01 $143,659 25,601 Jul 16, 2025
CARTER ROBERT B Award / Grant 1,203 2,685 May 15, 2025
Diaz Luis Award / Grant 1,203 4,054 May 15, 2025
Gregg Vicky B Award / Grant 1,203 18,138 May 15, 2025
Doi Tracey Award / Grant 1,203 6,490 May 15, 2025
MAIN TIMOTHY L Award / Grant 1,203 26,297 May 15, 2025
MORRISON DENISE M Award / Grant 1,203 10,742 May 15, 2025
Lassiter Wright III Award / Grant 1,203 9,037 May 15, 2025
RING TIMOTHY M Award / Grant 1,203 29,507 May 15, 2025
PFEIFFER GARY M Award / Grant 1,203 30,669 May 15, 2025
DELANEY MARK E SVP & Chief Commercial Officer Sale 874 $175.31 $153,221 7,498 May 12, 2025
SAMAD SAM Executive Vice President & CFO L 74 $164.42 $12,167 26,451 Apr 21, 2025
KUPPUSAMY KARTHIK SVP, Clinical Solutions L 27 $164.42 $4,439 10,612 Apr 21, 2025
Plewman Patrick SVP for Diagnostic Services L 81 $164.42 $13,318 21,087 Apr 21, 2025
Gregg Vicky B Award / Grant 68 $164.42 $11,181 16,935 Apr 21, 2025
DELANEY MARK E SVP & Chief Commercial Officer L 25 $164.42 $4,111 9,246 Apr 21, 2025
Davis J. E. CEO and President Sale 750 $167.86 $125,895 131,322 Apr 2, 2025
KUPPUSAMY KARTHIK SVP, Clinical Solutions Sale 2,555 $170.00 $434,350 10,575 Apr 2, 2025
Plewman Patrick SVP for Diagnostic Services Tax Withholding 162 $166.71 $27,007 20,988 Mar 26, 2025
DELANEY MARK E SVP & Chief Commercial Officer Tax Withholding 256 $166.71 $42,678 9,221 Mar 26, 2025
PREVOZNIK MICHAEL E SVP & General Counsel Sale 4,643 $170.00 $789,310 38,117 Mar 17, 2025
Doherty Catherine T. EVP, Regional Businesses Sale 5,370 $174.13 $935,078 68,068 Mar 5, 2025
DEPPE MICHAEL J SVP, Corp. Controller & CAO Tax Withholding 867 $173.74 $150,633 34,365 Mar 4, 2025
Doherty Catherine T. EVP, Regional Businesses Tax Withholding 394 $173.74 $68,454 68,784 Mar 4, 2025