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 |
|---|---|---|---|---|---|---|
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Grant or award 10b5-1 | +4,827 | 71,949 | ||
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Option exercise 10b5-1 | +22,105 | $121.81 | $2.7M | 94,054 |
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Sale 10b5-1 | −3,818 | $245.45 | $937K | 90,236 |
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Sale 10b5-1 | −5,990 | $246.26 | $1.5M | 84,246 |
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Sale 10b5-1 | −1,151 | $246.98 | $284K | 83,095 |
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Sale 10b5-1 | −2,358 | $248.38 | $586K | 80,737 |
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Sale 10b5-1 | −3,004 | $249.40 | $749K | 77,733 |
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Sale 10b5-1 | −2,877 | $250.49 | $721K | 74,856 |
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Sale 10b5-1 | −2,907 | $251.24 | $730K | 71,949 |
| 2026-11-03 | Doherty Catherine T. Executive Vice President | Option exercise · Non-Qualifed Stock Option (right to buy) 10b5-1 | −22,105 | $121.81 | $2.7M | 0 |
| 2026-03-05 | Doherty Catherine T. EVP, Regional Businesses | Sale 10b5-1 | −5,558 | $206.21 | $1.1M | 67,122 |
| 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 |
| 2026-03-03 | Doherty Catherine T. EVP, Regional Businesses | Sale 10b5-1 | −632 | $207.73 | $131K | 67,122 |
| 2026-03-02 | Doherty Catherine T. EVP, Regional Businesses | Shares withheld for taxes 10b5-1 | −648 | $204.86 | $133K | 67,754 |
| 2026-02-19 | Doherty Catherine T. EVP, Regional Businesses | Sale 10b5-1 | −1,433 | $204.83 | $294K | 68,402 |
| 2026-02-18 | Doherty Catherine T. EVP, Regional Businesses | Grant or award 10b5-1 | +2,928 | 70,996 | ||
| 2026-02-18 | Doherty Catherine T. EVP, Regional Businesses | Shares withheld for taxes 10b5-1 | −433 | $210.01 | $91K | 70,563 |
| 2026-02-18 | Doherty Catherine T. EVP, Regional Businesses | Shares withheld for taxes 10b5-1 | −728 | $206.99 | $151K | 69,835 |
| 2026-02-18 | Doherty Catherine T. EVP, Regional Businesses | Grant or award · Non-Qualifed Stock Option (right to buy) 10b5-1 | +13,514 | 13,514 |
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