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QUEST DIAGNOSTICS INC
Services-Medical Laboratories · DE · CIK 1022079
Provides diagnostic insights from laboratory testing to empower health decisions and improve outcomes
🔥 High media attention
$22.48B
Market cap
$212.64
Last close
+1.3%
1D
+9.8%
5D
786K
Volume
Price · last 39 sessions+11.0%
May 4L $186.61 · H $212.64Jun 29
201
Total filings
Jun 18, 2026
Last filing
12/31
Fiscal year end
10-Q10-QApr 22, 202610-Q10-QOct 21, 202510-Q10-QJul 23, 202510-Q10-QApr 23, 202510-Q10-QOct 23, 202410-Q10-QJul 24, 202410-Q10-QApr 24, 202410-Q10-QOct 25, 202310-Q10-QJul 27, 202310-Q10-QApr 28, 202310-Q10-QOct 21, 202210-Q10-QJul 22, 202210-Q10-QApr 22, 202210-Q10-QOct 22, 202110-Q10-QJul 23, 202110-Q10-QApr 23, 202110-Q10-QOct 23, 202010-Q10-QJul 24, 202010-Q10-QMay 4, 202010-Q10-QOct 23, 201910-Q10-QJul 24, 201910-Q10-QApr 24, 201910-Q10-QOct 24, 201810-Q10-QJul 25, 201810-Q10-QApr 20, 201810-Q10-QOct 19, 201710-Q10-QJul 25, 201710-Q10-QApr 21, 201710-Q10-QOct 21, 201610-Q10-QJul 25, 201610-Q10-QApr 27, 2016
Insider Activity
In the 90 days to Mar 5, 2026: 5 sold $12.8M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 5, 2026 | Doherty Catherine T.EVP, Regional Businesses | Sell | 5,558 | $206.21 | $1.1M |
| Mar 5, 2026 | Prevoznik Michael ESVP & General Counsel | Sell | 3,878 | $206.21 | $800K |
| Mar 5, 2026 | Plewman PatrickSVP for Diagnostic Services | Sell | 2,855 | $206.21 | $589K |
| Mar 4, 2026 | Kuppusamy KarthikSVP, Clinical Solutions | Sell | 2,628 | $204.86 | $538K |
| Mar 3, 2026 | Doherty Catherine T.EVP, Regional Businesses | Sell | 632 | $207.73 | $131K |
| Mar 3, 2026 | Prevoznik Michael ESVP & General Counsel | Sell | 526 | $207.73 | $109K |
| Mar 3, 2026 | Plewman PatrickSVP for Diagnostic Services | Sell | 410 | $207.73 | $85K |
| Mar 2, 2026 | Davis J. E.CEO and President | Sell | 10,000 | $212.52 | $2.1M |
| Feb 19, 2026 | Doherty Catherine T.EVP, Regional Businesses | Sell | 1,433 | $204.83 | $294K |
| Feb 19, 2026 | Prevoznik Michael ESVP & General Counsel | Sell | 1,111 | $204.83 | $228K |
| Feb 19, 2026 | Plewman PatrickSVP for Diagnostic Services | Sell | 958 | $204.83 | $196K |
| Feb 13, 2026 | Doherty Catherine T.EVP, Regional Businesses | Sell | 10,573 | $205.21 | $2.2M |
| Feb 13, 2026 | Doherty Catherine T.EVP, Regional Businesses | Sell | 10,122 | $206.37 | $2.1M |
| Feb 13, 2026 | Doherty Catherine T.EVP, Regional Businesses | Sell | 3,500 | $207.08 | $725K |
| Feb 13, 2026 | Doherty Catherine T.EVP, Regional Businesses | Sell | 1,619 | $208.21 | $337K |
| Feb 13, 2026 | Doherty Catherine T.EVP, Regional Businesses | Sell | 351 | $209.10 | $73K |
| Feb 10, 2026 | Plewman PatrickSVP for Diagnostic Services | Sell | 5,662 | $204.00 | $1.2M |
| Nov 25, 2025 | Davis J. E.CEO and President | Sell | 41,004 | $192.27 | $7.9M |
| Nov 25, 2025 | Davis J. E.CEO and President | Sell | 9,342 | $191.59 | $1.8M |
| Nov 25, 2025 | Davis J. E.CEO and President | Sell | 4,747 | $192.97 | $916K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
In the News
🔥 High media attentionCoverage (30d): 8 reputable articles.
MarketWatchQuest Diagnostics Inc. stock underperforms Friday when compared to competitors despite daily gains3d agoMarketWatchQuest Diagnostics Inc. stock underperforms Thursday when compared to competitors despite daily gains4d agoMarketWatchQuest Diagnostics Inc. stock outperforms competitors on strong trading day5d agoMarketWatchQuest Diagnostics Inc. stock underperforms Thursday when compared to competitors12d agoMarketWatchQuest Diagnostics Inc. stock outperforms competitors despite losses on the day12d ago
Reputable outlets only (Reuters, WSJ, CNBC, Barron's, and peers). More on Google News ↗
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