Company profile
Quest Diagnostics Inc Insider Trading
DGXEvery SEC Form 4 insider trading filing for Quest Diagnostics Inc (DGX) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- NYSE
- Sector
- Services-Medical Laboratories
- CIK
- 0001022079
- Filings
- 254
- Insiders
- 20
- Last filing
- 2026-07-28
Activity summary
No discretionary insider buying or selling in the last 30 days. The 1 transaction filed was made under a 10b5-1 plan, scheduled in advance rather than decided on the day.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Quest Diagnostics Inc insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $28.4M.
90 day insight
Over the last 90 days, Quest Diagnostics Inc insiders bought $36K across 3 transactions with no open-market sales.
- Most active insider: Kuppusamy Karthik with 6 transactions totaling $3.7M.
- Largest single sale: $1.9M by Davis J. E. on Jun 1, 2026.
- 100% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 28, 2026 | Delaney Mark E | DGX | Sale10b5 | 1,600 | $235.18 | $376K |
| Jul 22, 2026 | Kuppusamy Karthik | DGX | L | 37 | $206.81 | $8K |
| Jul 22, 2026 | Plewman Patrick | DGX | L | 46 | $206.81 | $10K |
| Jul 22, 2026 | Carter Robert B | DGX | L | 11 | $206.80 | $2K |
| Jul 22, 2026 | Delaney Mark E | DGX | L | 34 | $206.81 | $7K |
45 more transactions hidden
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Quest Diagnostics Inc as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →