QUEST DIAGNOSTICS INC (DGX)

Latest Insider Confidence Score

2026Q1

53.1
Bullish

Company insider confidence (by quarter)

2015Q1 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Rusckowski Stephen H Director 389,597 Mar 8, 2023
Guinan Mark CFO 98,981 Mar 9, 2022
Davis J. E. CEO 55,093 Nov 28, 2025
Eglinton Manner Carrie SVP, Advanced Diagnostics 48,391 Mar 9, 2022
Cohen Jon R SVP & Group Exec. Diag. Sol. 38,928 Mar 12, 2018

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Mar 4, 2026 Mar 6, 2026 SAMAD SAM CFO Sell 100.0 +6,227 23.03% ✗ $1.6M
Mar 4, 2026 Mar 6, 2026 Doherty Catherine T. EVP, Regional Businesses Sell 52.5 - 0.00% ✓ $2.3M
Mar 4, 2026 Mar 6, 2026 DELANEY MARK E SVP & Chief Commercial Officer Sell 97.5 +3,356 39.45% ✗ $476.5K
Mar 4, 2026 Mar 6, 2026 PREVOZNIK MICHAEL E SVP & General Counsel Sell 52.5 - 0.00% ✓ $1.5M
Mar 4, 2026 Mar 6, 2026 Davis J. E. CEO Sell 100.0 +25,238 21.54% ✗ $5.4M
Mar 4, 2026 Mar 6, 2026 Plewman Patrick SVP for Diagnostic Services Sell 52.5 - 0.00% ✓ $1.2M
Mar 4, 2026 Mar 6, 2026 Deppe Michael J SVP, Corp. Controller & CAO Sell 82.5 +723 2.10% ✗ $153.6K
Mar 4, 2026 Mar 6, 2026 KUPPUSAMY KARTHIK SVP, Clinical Solutions Sell 97.5 +3,572 30.05% ✗ $538.4K
Mar 2, 2026 Mar 4, 2026 Doherty Catherine T. EVP, Regional Businesses Sell 45.0 -1,280 -1.76% ✓ $264K
Mar 2, 2026 Mar 4, 2026 SAMAD SAM CFO Sell 22.5 -869 -3.11% ✗ $178K
Mar 2, 2026 Mar 4, 2026 PREVOZNIK MICHAEL E SVP & General Counsel Sell 46.3 -814 -1.85% ✓ $168.3K
Mar 2, 2026 Mar 4, 2026 Davis J. E. CEO Sell 27.5 -12,968 -9.96% ✓ $2.7M
Mar 2, 2026 Mar 4, 2026 Plewman Patrick SVP for Diagnostic Services Sell 38.8 -640 -4.04% ✓ $132.3K
Mar 2, 2026 Mar 4, 2026 KUPPUSAMY KARTHIK SVP, Clinical Solutions Sell 26.3 -205 -1.70% ✗ $42K
Mar 2, 2026 Mar 4, 2026 DELANEY MARK E SVP & Chief Commercial Officer Sell 26.3 -188 -2.16% ✗ $38.5K
Mar 2, 2026 Mar 4, 2026 Deppe Michael J SVP, Corp. Controller & CAO Sell 43.8 -88 -0.25% ✗ $18K
Feb 18, 2026 Feb 20, 2026 Plewman Patrick SVP for Diagnostic Services Sell 90.0 +457 2.97% ✓ $308.1K
Feb 18, 2026 Feb 20, 2026 SAMAD SAM CFO Sell 85.0 +2,169 1.93% ✗ $388.6K
Feb 18, 2026 Feb 20, 2026 PREVOZNIK MICHAEL E SVP & General Counsel Sell 75.0 +254 0.58% ✓ $362.6K
Feb 18, 2026 Feb 20, 2026 Davis J. E. CEO Sell 95.0 +9,673 8.03% ✗ $1.3M
Feb 18, 2026 Feb 20, 2026 Doherty Catherine T. EVP, Regional Businesses Sell 67.5 +334 0.46% ✓ $535.1K
Feb 18, 2026 Feb 20, 2026 KUPPUSAMY KARTHIK SVP, Clinical Solutions Sell 87.5 +1,640 4.48% ✗ $103.6K
Feb 18, 2026 Feb 20, 2026 DELANEY MARK E SVP & Chief Commercial Officer Sell 87.5 +1,166 3.41% ✗ $87.9K
Feb 18, 2026 Feb 20, 2026 Deppe Michael J SVP, Corp. Controller & CAO Sell 68.8 +184 0.52% ✗ $37.9K
Jan 28, 2026 Feb 20, 2026 Lassiter Wright III Director Buy 55.0 +7 0.08% ✗ $1.3K
Jan 28, 2026 Feb 20, 2026 CARTER ROBERT B Director Buy 60.0 +6 0.22% ✗ $1.1K
Jan 28, 2026 Feb 20, 2026 Gregg Vicky B Director Buy 61.3 +67 0.39% ✗ $12.3K
Feb 13, 2026 Feb 17, 2026 Doherty Catherine T. EVP, Regional Businesses Sell 8.1 -26,165 -26.50% ✓ $5.4M
Jan 28, 2026 Feb 12, 2026 Plewman Patrick SVP for Diagnostic Services Sell 18.8 -5,614 -15.43% ✓ $1.2M
Nov 25, 2025 Nov 28, 2025 Davis J. E. CEO Sell 2.5 -55,093 -31.38% ✓ $10.6M
Nov 25, 2025 Nov 28, 2025 Gregg Vicky B Director Sell 22.5 -1,250 -6.84% ✗ $239.7K
Nov 18, 2025 Nov 20, 2025 DELANEY MARK E SVP & Chief Commercial Officer Sell 5.0 -7,946 -51.34% ✓ $1.5M
Nov 5, 2025 Nov 7, 2025 Davis J. E. CEO Sell 37.5 -7,143 -5.60% ✗ $1.3M
Oct 21, 2025 Oct 24, 2025 SAMAD SAM CFO Neutral 60.0 +68 0.26% ✗ -
Oct 21, 2025 Oct 24, 2025 Plewman Patrick SVP for Diagnostic Services Neutral 60.0 +46 0.30% ✗ -
Oct 21, 2025 Oct 24, 2025 KUPPUSAMY KARTHIK SVP, Clinical Solutions Neutral 55.0 +15 0.14% ✗ -
Oct 22, 2025 Oct 24, 2025 PFEIFFER GARY M Director Sell 20.0 -1,482 -4.79% ✗ $270.3K
Oct 21, 2025 Oct 24, 2025 Gregg Vicky B Director Neutral 60.0 +70 0.38% ✗ -
Oct 21, 2025 Oct 24, 2025 DELANEY MARK E SVP & Chief Commercial Officer Neutral 55.0 +15 0.20% ✗ -
Oct 21, 2025 Oct 24, 2025 CARTER ROBERT B Director Neutral 60.0 +6 0.22% ✗ -
Oct 1, 2025 Oct 3, 2025 RING TIMOTHY M Director Neutral 52.5 - 0.00% ✗ -
Oct 1, 2025 Oct 3, 2025 Lassiter Wright III Director Neutral 52.5 - 0.00% ✗ -
Sep 26, 2025 Sep 30, 2025 PREVOZNIK MICHAEL E SVP & General Counsel Sell 51.3 -227 -0.52% ✓ $42.7K
Sep 23, 2025 Sep 25, 2025 PREVOZNIK MICHAEL E SVP & General Counsel Sell 3.8 -28,463 -25.78% ✓ $5.3M
Aug 21, 2025 Aug 25, 2025 Plewman Patrick SVP for Diagnostic Services Sell 22.5 -1,975 -11.45% ✓ $365.4K
Aug 19, 2025 Aug 21, 2025 Plewman Patrick SVP for Diagnostic Services Sell 12.5 -4,532 -20.81% ✓ $829.4K
Aug 15, 2025 Aug 19, 2025 Plewman Patrick SVP for Diagnostic Services Sell 22.5 -1,975 -10.28% ✓ $355.5K
Aug 13, 2025 Aug 15, 2025 KUPPUSAMY KARTHIK SVP, Clinical Solutions Sell 46.3 -123 -1.18% ✗ $21.6K
Aug 6, 2025 Aug 8, 2025 Plewman Patrick SVP for Diagnostic Services Sell 22.5 -5,535 -12.05% ✓ $968.6K
Jul 30, 2025 Aug 1, 2025 KUPPUSAMY KARTHIK SVP, Clinical Solutions Sell 10.0 -10,479 -24.81% ✓ $1.8M
Jul 21, 2025 Jul 25, 2025 SAMAD SAM CFO Buy 61.3 +72 0.28% ✗ $12.1K
Jul 21, 2025 Jul 25, 2025 Plewman Patrick SVP for Diagnostic Services Buy 61.3 +80 0.38% ✗ $13.4K
Jul 21, 2025 Jul 25, 2025 KUPPUSAMY KARTHIK SVP, Clinical Solutions Buy 60.0 +27 0.21% ✗ $4.5K
Jul 21, 2025 Jul 25, 2025 Lassiter Wright III Director Buy 55.0 +7 0.08% ✗ $1.2K
Jul 21, 2025 Jul 25, 2025 Gregg Vicky B Director Buy 61.3 +79 0.44% ✗ $13.2K
Jul 21, 2025 Jul 25, 2025 DELANEY MARK E SVP & Chief Commercial Officer Buy 60.0 +17 0.23% ✗ $2.8K
Jul 21, 2025 Jul 25, 2025 CARTER ROBERT B Director Buy 60.0 +7 0.26% ✗ $1.2K
Jul 16, 2025 Jul 17, 2025 SAMAD SAM CFO Sell 22.5 -850 -3.21% ✗ $143.7K
Jul 1, 2025 Jul 2, 2025 RING TIMOTHY M Director Neutral 52.5 - 0.00% ✗ -
Jul 1, 2025 Jul 2, 2025 Lassiter Wright III Director Neutral 52.5 - 0.00% ✗ -
May 15, 2025 May 19, 2025 CARTER ROBERT B Director Neutral 90.0 +1,203 81.17% ✗ -
May 15, 2025 May 19, 2025 Diaz Luis Director Neutral 90.0 +1,203 42.20% ✗ -
May 15, 2025 May 19, 2025 Gregg Vicky B Director Neutral 85.0 +1,203 7.10% ✗ -
May 15, 2025 May 19, 2025 Doi Tracey Director Neutral 90.0 +1,203 22.75% ✗ -
May 15, 2025 May 19, 2025 MAIN TIMOTHY L Director Neutral 82.5 +1,203 4.79% ✗ -
May 15, 2025 May 19, 2025 MORRISON DENISE M Director Neutral 90.0 +1,203 12.61% ✗ -
May 15, 2025 May 19, 2025 Lassiter Wright III Director Neutral 90.0 +1,203 15.36% ✗ -
May 15, 2025 May 19, 2025 RING TIMOTHY M Director Neutral 82.5 +1,203 4.25% ✗ -
May 15, 2025 May 19, 2025 PFEIFFER GARY M Director Neutral 82.5 +1,203 4.08% ✗ -
May 12, 2025 May 14, 2025 DELANEY MARK E SVP & Chief Commercial Officer Sell 17.5 -1,748 -18.91% ✓ $306.8K
Apr 21, 2025 May 2, 2025 SAMAD SAM CFO Buy 61.3 +74 0.28% ✗ $12.2K
Apr 21, 2025 May 2, 2025 KUPPUSAMY KARTHIK SVP, Clinical Solutions Buy 60.0 +27 0.21% ✗ $4.4K
Apr 21, 2025 May 2, 2025 Plewman Patrick SVP for Diagnostic Services Buy 61.3 +81 0.39% ✗ $13.3K
Apr 21, 2025 May 2, 2025 Gregg Vicky B Director Neutral 60.0 +68 0.40% ✗ -
Apr 21, 2025 May 2, 2025 DELANEY MARK E SVP & Chief Commercial Officer Buy 60.0 +25 0.27% ✗ $4.1K
Apr 2, 2025 Apr 4, 2025 Davis J. E. CEO Sell 8.8 -39,191 -23.49% ✓ $6.6M
Apr 2, 2025 Apr 4, 2025 KUPPUSAMY KARTHIK SVP, Clinical Solutions Sell 17.5 -2,555 -16.92% ✓ $434.4K
Apr 1, 2025 Apr 3, 2025 Lassiter Wright III Director Neutral 52.5 - 0.00% ✗ -
Apr 1, 2025 Apr 3, 2025 RING TIMOTHY M Director Neutral 52.5 - 0.00% ✗ -
Mar 26, 2025 Mar 28, 2025 Plewman Patrick SVP for Diagnostic Services Sell 48.8 -162 -0.77% ✗ $27K
Mar 26, 2025 Mar 28, 2025 DELANEY MARK E SVP & Chief Commercial Officer Sell 46.3 -256 -2.70% ✗ $42.7K
Mar 17, 2025 Mar 19, 2025 PREVOZNIK MICHAEL E SVP & General Counsel Sell 26.3 -4,643 -9.59% ✓ $789.3K
Mar 5, 2025 Mar 7, 2025 Doherty Catherine T. EVP, Regional Businesses Sell 30.0 -5,370 -6.90% ✓ $935.1K
Mar 3, 2025 Mar 5, 2025 DEPPE MICHAEL J SVP, Corp. Controller & CAO Sell 40.0 -848 -2.36% ✗ $444.6K
Mar 3, 2025 Mar 5, 2025 Doherty Catherine T. EVP, Regional Businesses Sell 95.0 +4,260 5.79% ✓ $1.1M
Mar 3, 2025 Mar 5, 2025 Davis J. E. CEO Sell 100.0 +28,599 20.69% ✗ $5.8M
Mar 3, 2025 Mar 5, 2025 KUPPUSAMY KARTHIK SVP, Clinical Solutions Sell 97.5 +1,563 11.57% ✗ $498.8K
Mar 3, 2025 Mar 5, 2025 Plewman Patrick SVP for Diagnostic Services Sell 97.5 +3,288 18.41% ✗ $414.5K
Mar 3, 2025 Mar 5, 2025 PREVOZNIK MICHAEL E SVP & General Counsel Sell 92.5 +3,729 8.35% ✓ $838.6K
Mar 4, 2025 Mar 5, 2025 DELANEY MARK E SVP & Chief Commercial Officer Sell 97.5 +3,494 58.40% ✗ $316.7K
Mar 4, 2025 Mar 5, 2025 SAMAD SAM CFO Sell 100.0 +6,200 30.73% ✗ $1.3M
Feb 26, 2025 Feb 28, 2025 SAMAD SAM CFO Sell 42.5 -869 -4.13% ✗ $149.3K
Feb 26, 2025 Feb 28, 2025 Davis J. E. CEO Sell 40.0 -2,966 -2.10% ✗ $509.4K
Feb 26, 2025 Feb 28, 2025 PREVOZNIK MICHAEL E SVP & General Counsel Sell 45.0 -814 -1.79% ✓ $140.3K
Feb 26, 2025 Feb 28, 2025 Plewman Patrick SVP for Diagnostic Services Sell 46.3 -229 -1.27% ✗ $39.3K
Feb 26, 2025 Feb 28, 2025 KUPPUSAMY KARTHIK SVP, Clinical Solutions Sell 46.3 -233 -1.70% ✗ $40K
Feb 26, 2025 Feb 28, 2025 Doherty Catherine T. EVP, Regional Businesses Sell 45.0 -1,279 -1.71% ✓ $220.4K
Feb 26, 2025 Feb 28, 2025 DEPPE MICHAEL J SVP, Corp. Controller & CAO Sell 51.3 -88 -0.24% ✗ $15.1K
Feb 26, 2025 Feb 28, 2025 DELANEY MARK E SVP & Chief Commercial Officer Sell 46.3 -214 -3.45% ✗ $36.8K
Feb 19, 2025 Feb 21, 2025 SAMAD SAM CFO Sell 42.5 -1,031 -4.67% ✗ $175K