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 |
|---|---|---|---|---|---|---|
| 2026-03-04 | DELANEY MARK E SVP & Chief Commercial Officer | Shares withheld for taxes | −2,326 | $204.86 | $477K | 11,864 |
| 2026-03-04 | PREVOZNIK MICHAEL E SVP & General Counsel | Grant or award 10b5-1 | +7,232 | $204.86 | $1.5M | 44,789 |
| 2026-03-04 | PREVOZNIK MICHAEL E SVP & General Counsel | Shares withheld for taxes 10b5-1 | −3,354 | $204.86 | $687K | 41,435 |
| 2026-03-04 | Davis J. E. CEO and President | Grant or award | +51,652 | $204.86 | $10.6M | 168,837 |
| 2026-03-04 | Davis J. E. CEO and President | Shares withheld for taxes | −26,414 | $204.86 | $5.4M | 142,423 |
| 2026-03-04 | Plewman Patrick SVP for Diagnostic Services | Grant or award 10b5-1 | +5,682 | $204.86 | $1.2M | 20,880 |
| 2026-03-04 | Plewman Patrick SVP for Diagnostic Services | Shares withheld for taxes 10b5-1 | −2,827 | $204.86 | $579K | 18,053 |
| 2026-03-04 | Deppe Michael J SVP, Corp. Controller & CAO | Grant or award | +1,473 | $204.86 | $302K | 35,946 |
| 2026-03-04 | Deppe Michael J SVP, Corp. Controller & CAO | Shares withheld for taxes | −750 | $204.86 | $154K | 35,196 |
| 2026-03-04 | KUPPUSAMY KARTHIK SVP, Clinical Solutions | Grant or award | +6,200 | $204.86 | $1.3M | 16,069 |
| 2026-03-04 | KUPPUSAMY KARTHIK SVP, Clinical Solutions | Sale | −2,628 | $204.86 | $538K | 13,441 |
| 2026-03-03 | Doherty Catherine T. EVP, Regional Businesses | Sale 10b5-1 | −632 | $207.73 | $131K | 67,122 |
| 2026-03-03 | PREVOZNIK MICHAEL E SVP & General Counsel | Sale 10b5-1 | −526 | $207.73 | $109K | 37,557 |
| 2026-03-03 | Plewman Patrick SVP for Diagnostic Services | Sale 10b5-1 | −410 | $207.73 | $85K | 15,198 |
| 2026-03-02 | Doherty Catherine T. EVP, Regional Businesses | Shares withheld for taxes 10b5-1 | −648 | $204.86 | $133K | 67,754 |
| 2026-03-02 | SAMAD SAM Executive Vice President & CFO | Shares withheld for taxes | −869 | $204.86 | $178K | 27,041 |
| 2026-03-02 | PREVOZNIK MICHAEL E SVP & General Counsel | Shares withheld for taxes 10b5-1 | −288 | $204.86 | $59K | 38,083 |
| 2026-03-02 | Davis J. E. CEO and President | Shares withheld for taxes 10b5-1 | −2,968 | $204.86 | $608K | 127,185 |
| 2026-03-02 | Davis J. E. CEO and President | Sale 10b5-1 | −10,000 | $212.52 | $2.1M | 117,185 |
| 2026-03-02 | Plewman Patrick SVP for Diagnostic Services | Shares withheld for taxes 10b5-1 | −230 | $204.86 | $47K | 15,608 |
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