Quest Diagnostics Inc
A healthcare company that runs one of the world's largest clinical laboratory networks, performing blood tests and diagnostics for hospitals, doctors, and patients nationwide. Founded in 1967 as Metropolitan Pathology Laboratory by a resident doctor working in a two-bedroom Manhattan apartment — his lab famously started over a bathtub — it was renamed Quest Diagnostics in 1996 after glassmaker Corning spun it off. Its brands include the MyQuest patient app and ExamOne life-insurance exams.
Granted 580.1K · Sold 384.8K
Granted 314.6K · Sold 114.3K
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Granted 209.8K · Sold 178.6K
Granted 27.9K
Granted 203.0K · Sold 180.5K
Granted 49.1K · Sold 34.3K
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Granted 18.5K · Sold 12.0K
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| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Rusckowski Stephen HDirector · 30 transactions | +34.5% | 389.6Kas of Mar 2023 | 580.1K | — | 384.8K |
| Davis J. E.CEO and President, Director · 51 transactions | +165.2% | 132.4K | 314.6K | — | 114.3K |
| Guinan MarkExecutive Vice President & CFO · 5 transactions | +4% | 99.0Kas of Mar 2022 | 23.0K | — | — |
| Doherty Catherine T.EVP, Regional Businesses · 61 transactions | -1.7% | 71.6K | 209.8K | — | 178.6K |
| Eglinton Manner CarrieSVP, Advanced Diagnostics · 6 transactions | +33% | 48.4Kas of Mar 2022 | 27.9K | — | — |
| Prevoznik Michael ESVP & General Counsel · 58 transactions | -4.6% | 43.3K | 203.0K | — | 180.5K |
| Deppe Michael JSVP, Corp. Controller & CAO · 43 transactions | +30.5% | 35.9K | 49.1K | — | 34.3K |
| Wilensky Gail RDirector · 2 transactions | +8.5% | 33.9Kas of May 2023 | 2.7K | — | — |
| Samad SamExecutive Vice President & CFO · 28 transactions | — | 33.4K | 46.8K | — | — |
| Ring Timothy MDirector · 22 transactions | +40.1% | 31.1K | 18.5K | — | 12.0K |
| Pfeiffer Gary MDirector · 6 transactions | +33.3% | 31.0K | 6.5K | — | 1.5K |
| Main Timothy LDirector · 5 transactions | +31% | 27.4K | 6.5K | — | — |
| Gregg Vicky BDirector · 25 transactions | +18.9% | 18.3K | 7.0K | — | 5.0K |
| Kuppusamy KarthikSVP, Clinical Solutions · 52 transactions | — | 15.6K | 40.4K | — | 29.3K |
| Plewman PatrickSVP for Diagnostic Services · 52 transactions | — | 15.2K | 38.7K | — | 24.2K |
| Morrison Denise MDirector · 5 transactions | +129.1% | 11.9K | 6.5K | — | — |
| Delaney Mark ESVP & Chief Commercial Officer · 32 transactions | — | 11.9K | 26.6K | — | 10.5K |
| Lassiter Wright IIIDirector · 8 transactions | +214.4% | 10.3K | 6.5K | — | — |
| Doi TraceyDirector · 5 transactions | +756.1% | 7.7K | 6.5K | — | — |
| Diaz LuisDirector · 4 transactions | — | 5.2K | 5.2K | — | — |
| Gardner Mark ASVP of Molecular Gen & Oncol · 5 transactions | — | 4.7Kas of Sep 2024 | 4.2K | — | — |
| Carter Robert BDirector · 7 transactions | — | 3.9K | 3.8K | — | — |
| Wentworth Timothy CDirector · 2 transactions | — | 1.4K | 1.4K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -975.0K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.