DGX insider trading — Quest Diagnostics Inc
No open-market insider purchases or sales were filed for Quest Diagnostics Inc (DGX) in the last 90 days. Other insider transactions — such as stock awards, option exercises or tax withholding — are listed below.
Updated Oct 16, 2026.
Recent DGX insider transactions
Every Form 4 filed by Quest Diagnostics Inc officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Sep 1, 2026 | Davis J. E. | CEO and President | S · Sale · 10b5-1 | Direct | 10,000 | $242.72 | $2.43M | Form 4 |
| Aug 28, 2026 | Prevoznik Michael E | SVP & General Counsel | M · Option exercise · 10b5-1 | Direct | 22,677 | $112.17 | $2.54M | Form 4 |
| Aug 28, 2026 | Prevoznik Michael E | SVP & General Counsel | S · Sale · 10b5-1 | Direct | 22,677 | $243.11 | $5.51M | Form 4 |
| Aug 28, 2026 | Prevoznik Michael E | SVP & General Counsel | G · Gift · 10b5-1 | Direct | 1,000 | — | — | Form 4 |
| Jul 28, 2026 | Delaney Mark E | SVP & Chief Commercial Officer | S · Sale · 10b5-1 | Direct | 1,600 | $235.18 | $376K | Form 4 |
| Jul 22, 2026 | Carter Robert B | Director | L · L | Direct | 11 | $206.80 | $2K | Form 4 |
| Jul 22, 2026 | Kuppusamy Karthik | SVP, Clinical Solutions | L · L | Direct | 37 | $206.81 | $8K | Form 4 |
| Jul 22, 2026 | Gregg Vicky B | Director | A · Grant/award | Direct | 72 | $206.81 | $15K | Form 4 |
| Jul 22, 2026 | Plewman Patrick | SVP for Diagnostic Services | L · L | Direct | 46 | $206.81 | $10K | Form 4 |
| Jul 22, 2026 | Main Timothy L | Director | L · L | Direct | 21 | $206.81 | $4K | Form 4 |
| Jul 22, 2026 | Lassiter Wright Iii | Director | L · L | Direct | 6 | $206.81 | $1K | Form 4 |
| Jul 22, 2026 | Samad Sam | Executive Vice President & CFO | A · Grant/award | Direct | 102 | $206.81 | $21K | Form 4 |
| Jul 22, 2026 | Delaney Mark E | SVP & Chief Commercial Officer | L · L | Direct | 34 | $206.81 | $7K | Form 4 |
DGX insider trading FAQ
Are insiders buying DGX stock?
Not on the open market. In the last 90 days, Quest Diagnostics Inc insiders made no open-market purchases, and no open-market sales. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading DGX?
No insider bought or sold on the open market in the last 90 days.
Where does DGX insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.