CoverageForm 410-K10-Q8-K13D13G13F

Quest Diagnostics Inc

DGXCIK 0001022079 · Every Form 4 filed by insiders at this issuer. See financials →

Annual report (10-K)

Latest 10-K filed Feb 26, 2026. Sentiment + YoY language diff vs prior year. Read sections →

Signal:Neutral
Risk Factors:tone -0.0327Δ-0.000991% similar+42/-40
MD&A:tone -0.0092Δ+0.001292% similar+152/-167

Sentiment via Loughran-McDonald lexicon · YoY diff via Jaccard similarity + paragraph set difference.

Recent 8-K announcements

Per-item disclosure feed. Item 2.02 is the earnings release.

Top insiders

Most active reporters at Quest Diagnostics Inc

NameRolesFilings
Kuppusamy Karthik
Officer
35
Plewman Patrick
Officer
35
Prevoznik Michael E
Officer
24
Delaney Mark E
Officer
23
Samad Sam
Officer
23

Showing 1-5 of 23

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Top performers

Insiders ranked by realized 90-day signed return on their open-market trades at Quest Diagnostics Inc. Minimum 3 scored trades. Returns are signed - a sale followed by a rally counts against the insider.

#InsiderTradesWin rateAvgMedianBestWorst
1Rusckowski Stephen H14100%+6.5%+5.8%+7.8%+5.4%
2Plewman Patrick1040%+0.6%-1.5%+7.6%-4.3%
3Doherty Catherine T.2361%+0.5%+1.0%+9.2%-13.2%
4Gregg Vicky B30%-8.3%-7.8%-6.8%-10.2%
5Davis J. E.195%-6.2%-6.8%+7.0%-7.8%
6Delaney Mark E50%-6.1%-6.8%-1.4%-10.9%
7Deppe Michael J60%-5.3%-5.3%-5.3%-5.3%
8Kuppusamy Karthik813%-3.1%-4.6%+7.3%-6.8%
9Prevoznik Michael E2357%-0.3%+0.3%+6.9%-13.2%

All filings

310 Form 4 / 4-A filings, newest first

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