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 |
|---|---|---|---|---|---|---|
| 2026-10-26 | PFEIFFER GARY M Director | Sale 10b5-1 | −1,203 | $243.00 | $292K | 29,802 |
| 2026-10-21 | CARTER ROBERT B Director | Other acquisition | +10 | $235.93 | $2K | 3,874 |
| 2026-10-21 | SAMAD SAM Executive Vice President & CFO | Grant or award | +90 | $235.94 | $21K | 33,568 |
| 2026-10-21 | Gregg Vicky B Director | Grant or award | +63 | $235.94 | $15K | 18,449 |
| 2026-10-21 | KUPPUSAMY KARTHIK SVP, Clinical Solutions | Other acquisition | +33 | $235.94 | $8K | 13,619 |
| 2026-10-21 | Lassiter Wright III Director | Other acquisition | +6 | $235.96 | $1K | 10,329 |
| 2026-10-21 | Plewman Patrick SVP for Diagnostic Services | Other acquisition | +41 | $235.94 | $10K | 15,334 |
| 2026-10-21 | MAIN TIMOTHY L Director | Other acquisition | +18 | $235.94 | $4K | 22,478 |
| 2026-10-21 | DELANEY MARK E SVP & Chief Commercial Officer | Other acquisition | +25 | $235.94 | $6K | 10,360 |
| 2026-10-01 | WENTWORTH TIMOTHY C Director | Grant or award · Phantom Stock Units | +135 | 477 | ||
| 2026-09-01 | Davis J. E. CEO and President | Sale 10b5-1 | −10,000 | $242.72 | $2.4M | 122,423 |
| 2026-08-28 | PREVOZNIK MICHAEL E SVP & General Counsel | Option exercise 10b5-1 | +22,677 | $112.17 | $2.5M | 60,234 |
| 2026-08-28 | PREVOZNIK MICHAEL E SVP & General Counsel | Sale 10b5-1 | −16,010 | $242.88 | $3.9M | 44,224 |
| 2026-08-28 | PREVOZNIK MICHAEL E SVP & General Counsel | Sale 10b5-1 | −6,237 | $243.63 | $1.5M | 37,987 |
| 2026-08-28 | PREVOZNIK MICHAEL E SVP & General Counsel | Sale 10b5-1 | −430 | $244.51 | $105K | 37,557 |
| 2026-08-28 | PREVOZNIK MICHAEL E SVP & General Counsel | Gift 10b5-1 | −1,000 | 36,557 | ||
| 2026-08-28 | PREVOZNIK MICHAEL E SVP & General Counsel | Option exercise · Non-Qualifed Stock Option (right to buy) 10b5-1 | −22,677 | $112.17 | $2.5M | 0 |
| 2026-07-28 | DELANEY MARK E SVP & Chief Commercial Officer | Sale 10b5-1 | −1,600 | $235.18 | $376K | 10,335 |
| 2026-07-22 | KUPPUSAMY KARTHIK SVP, Clinical Solutions | Other acquisition | +37 | $206.81 | $8K | 13,557 |
| 2026-07-22 | CARTER ROBERT B Director | Other acquisition | +11 | $206.80 | $2K | 3,864 |
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