CIK 0001022079 · Large accelerated filer
QUEST DIAGNOSTICS INC
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- DGX
- Exchange
- NYSE
- Industry
- Services-Medical Laboratories
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 161387862
- Phone
- 9735202700
- Business address
- 500 PLAZA DRIVE, SECAUCUS, NJ, 07094
- Former names
- CORNING CLINICAL LABORATORIES INC
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $16,730,307
- in 5 filings, $16.7M under 10b5-1 plans
Net −$16,730,307. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
- PREVOZNIK MICHAEL E −$5.5M SVP & General Counsel sold 38% of stake
- Doherty Catherine T. −$5.5M Executive Vice President sold 24% of stake
- Plewman Patrick −$3.0M SVP for Diagnostic Services sold 44% of stake
- Davis J. E. −$2.4M CEO and President sold 8% of stake
- PFEIFFER GARY M −$292K Director sold 4% of stake
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-05-20 | CARTER ROBERT B Director | Grant or award | +1,142 | 3,853 | ||
| 2026-05-20 | MAIN TIMOTHY L Director | Grant or award | +1,142 | 27,439 | ||
| 2026-05-20 | PFEIFFER GARY M Director | Grant or award | +1,142 | 31,005 | ||
| 2026-04-20 | SAMAD SAM Executive Vice President & CFO | Grant or award | +108 | $194.70 | $21K | 33,376 |
| 2026-04-20 | Plewman Patrick SVP for Diagnostic Services | Other acquisition | +49 | $194.70 | $10K | 15,247 |
| 2026-04-20 | Gregg Vicky B Director | Grant or award | +68 | $194.70 | $13K | 17,172 |
| 2026-04-20 | CARTER ROBERT B Director | Other acquisition | +7 | $194.70 | $1K | 2,711 |
| 2026-04-20 | Lassiter Wright III Director | Other acquisition | +6 | $194.70 | $1K | 9,063 |
| 2026-04-20 | KUPPUSAMY KARTHIK SVP, Clinical Solutions | Other acquisition | +39 | $194.70 | $8K | 13,490 |
| 2026-04-20 | DELANEY MARK E SVP & Chief Commercial Officer | Other acquisition | +37 | $194.70 | $7K | 11,901 |
| 2026-04-01 | WENTWORTH TIMOTHY C Director | Grant or award · Phantom Stock Units | +198 | 198 | ||
| 2026-03-09 | WENTWORTH TIMOTHY C Director | Grant or award | +215 | 215 | ||
| 2026-03-05 | Doherty Catherine T. EVP, Regional Businesses | Sale 10b5-1 | −5,558 | $206.21 | $1.1M | 67,122 |
| 2026-03-05 | PREVOZNIK MICHAEL E SVP & General Counsel | Sale 10b5-1 | −3,878 | $206.21 | $800K | 37,557 |
| 2026-03-05 | Plewman Patrick SVP for Diagnostic Services | Sale 10b5-1 | −2,855 | $206.21 | $589K | 15,198 |
| 2026-03-04 | SAMAD SAM Executive Vice President & CFO | Grant or award | +13,947 | $204.86 | $2.9M | 40,988 |
| 2026-03-04 | SAMAD SAM Executive Vice President & CFO | Shares withheld for taxes | −7,720 | $204.86 | $1.6M | 33,268 |
| 2026-03-04 | Doherty Catherine T. EVP, Regional Businesses | Grant or award 10b5-1 | +11,364 | $204.86 | $2.3M | 78,486 |
| 2026-03-04 | Doherty Catherine T. EVP, Regional Businesses | Shares withheld for taxes 10b5-1 | −5,806 | $204.86 | $1.2M | 72,680 |
| 2026-03-04 | DELANEY MARK E SVP & Chief Commercial Officer | Grant or award | +5,682 | $204.86 | $1.2M | 14,190 |
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