# Quest Diagnostics Inc: insider transactions

DGX · NYSE · CIK 1022079 · [Healthcare](/sectors/healthcare.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/dgx.md) · [Financials](/companies/dgx/financials.md) · [Filings](/companies/dgx/filings.md) · [Insiders](/companies/dgx/insiders.md)

## All transactions: 7

Non-derivative transactions reported on Forms 4, newest first. Codes P (purchase) and S (sale) are open-market trades. Reported price is as stated on the form, not a market price. Filter with ?type= `open-market`, `purchase`, `sale`.

| Date | Insider | Role | Transaction | Shares | Reported price | Value | Filing |
| --- | --- | --- | --- | ---: | ---: | ---: | --- |
| 2026-10-26 | [Pfeiffer Gary M](/insiders/1127304.md) | Director | Sale (S) | 1,203 | $243.00 | $292.3k | [Form 4](/filings/0001022079-26-000118.md) |
| 2026-10-21 | [Kuppusamy Karthik](/insiders/1955217.md) | SVP, Clinical Solutions, Officer | Code L (L) | 33 | $235.944 | $7.8k | [Form 4](/filings/0001022079-26-000113.md) |
| 2026-10-21 | [Gregg Vicky B](/insiders/1510304.md) | Director | Grant or award (A) | 63 | $235.939 | $14.9k | [Form 4](/filings/0001022079-26-000114.md) |
| 2026-10-21 | [Delaney Mark E](/insiders/1955265.md) | SVP & Chief Commercial Officer, Officer | Code L (L) | 25 | $235.941 | $5.9k | [Form 4](/filings/0001022079-26-000109.md) |
| 2026-10-21 | [Main Timothy L](/insiders/1196744.md) | Director | Code L (L) | 18 | $235.937 | $4.2k | [Form 4](/filings/0001022079-26-000110.md) |
| 2026-10-21 | [Plewman Patrick](/insiders/1497368.md) | SVP for Diagnostic Services, Officer | Code L (L) | 41 | $235.94 | $9.7k | [Form 4](/filings/0001022079-26-000111.md) |
| 2026-10-21 | [Lassiter Wright III](/insiders/1805909.md) | Director | Code L (L) | 6 | $235.959 | $1.4k | [Form 4](/filings/0001022079-26-000112.md) |

Source: SEC EDGAR, Forms 4. Last ingested by Listed: Oct 29, 2026, 04:31 ET. No prices; not investment advice.