Quest Diagnostics Incorporated
DGXLast close · Oct 16, 2026235.00−4.15 (−1.74%)
Market cap$25.9B
Between Apr 20, 2026 and Oct 1, 2026, Quest Diagnostics (DGX) insiders filed 40 Form 4 transactions: 7 sales worth $11.9M in total and no open-market purchase; 7 of the sales were under 10b5-1 plans set in advance. The largest seller was Prevoznik Michael E, $3.9M. 33 other filings were grants, exercises or gifts, which say nothing about buying or selling.
40
0
7
14
Form 4 transactions
| Date | Insider | Title | Code | Plan | Shares | Price | Value |
|---|---|---|---|---|---|---|---|
| 2026-10-01 | WENTWORTH TIMOTHY C | Director | A | 135 | 0.00 | $0 | |
| 2026-09-01 | Davis J. E. | CEO and President | S | 10b5-1 | 10,000 | 242.72 | $2.4M |
| 2026-08-28 | PREVOZNIK MICHAEL E | SVP & General Counsel | M | 10b5-1 | 22,677 | 112.17 | $2.5M |
| 2026-08-28 | PREVOZNIK MICHAEL E | SVP & General Counsel | S | 10b5-1 | 16,010 | 242.88 | $3.9M |
| 2026-08-28 | PREVOZNIK MICHAEL E | SVP & General Counsel | S | 10b5-1 | 6,237 | 243.63 | $1.5M |
| 2026-08-28 | PREVOZNIK MICHAEL E | SVP & General Counsel | S | 10b5-1 | 430 | 244.51 | $105,141.4 |
| 2026-08-28 | PREVOZNIK MICHAEL E | SVP & General Counsel | G | 10b5-1 | 1,000 | 0.00 | $0 |
| 2026-08-28 | PREVOZNIK MICHAEL E | SVP & General Counsel | M | 10b5-1 | 22,677 | 112.17 | $2.5M |
| 2026-07-28 | DELANEY MARK E | SVP & Chief Commercial Officer | S | 10b5-1 | 1,600 | 235.18 | $376,288 |
| 2026-07-22 | KUPPUSAMY KARTHIK | SVP, Clinical Solutions | L | 37 | 206.81 | $7,651.9 | |
| 2026-07-22 | CARTER ROBERT B | Director | L | 11 | 206.80 | $2,274.8 | |
| 2026-07-22 | Gregg Vicky B | Director | A | 72 | 206.81 | $14,890.2 | |
| 2026-07-22 | Plewman Patrick | SVP for Diagnostic Services | L | 46 | 206.81 | $9,513.1 | |
| 2026-07-22 | MAIN TIMOTHY L | Director | L | 21 | 206.81 | $4,343 | |
| 2026-07-22 | SAMAD SAM | Executive Vice President & CFO | A | 102 | 206.81 | $21,094.3 | |
| 2026-07-22 | Lassiter Wright III | Director | L | 6 | 206.81 | $1,240.9 | |
| 2026-07-22 | DELANEY MARK E | SVP & Chief Commercial Officer | L | 34 | 206.81 | $7,031.4 | |
| 2026-07-01 | WENTWORTH TIMOTHY C | Director | A | 144 | 0.00 | $0 | |
| 2026-06-04 | KUPPUSAMY KARTHIK | SVP, Clinical Solutions | M | 10b5-1 | 3,320 | 127.73 | $424,047 |
| 2026-06-04 | KUPPUSAMY KARTHIK | SVP, Clinical Solutions | M | 10b5-1 | 4,827 | 121.81 | $587,952.7 |
| 2026-06-04 | KUPPUSAMY KARTHIK | SVP, Clinical Solutions | S | 10b5-1 | 8,147 | 200.00 | $1.6M |
| 2026-06-04 | KUPPUSAMY KARTHIK | SVP, Clinical Solutions | M | 10b5-1 | 3,320 | 127.73 | $424,047 |
| 2026-06-04 | KUPPUSAMY KARTHIK | SVP, Clinical Solutions | M | 10b5-1 | 4,827 | 121.81 | $587,952.7 |
| 2026-06-01 | Davis J. E. | CEO and President | S | 10b5-1 | 10,000 | 194.14 | $1.9M |
| 2026-05-20 | CARTER ROBERT B | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | Gregg Vicky B | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | Diaz Luis | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | MAIN TIMOTHY L | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | WENTWORTH TIMOTHY C | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | Doi Tracey | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | RING TIMOTHY M | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | Lassiter Wright III | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | MORRISON DENISE M | Director | A | 1,142 | 0.00 | $0 | |
| 2026-05-20 | PFEIFFER GARY M | Director | A | 1,142 | 0.00 | $0 | |
| 2026-04-20 | SAMAD SAM | Executive Vice President & CFO | A | 108 | 194.70 | $21,027.4 | |
| 2026-04-20 | Plewman Patrick | SVP for Diagnostic Services | L | 49 | 194.70 | $9,540.3 | |
| 2026-04-20 | Gregg Vicky B | Director | A | 68 | 194.70 | $13,239.5 | |
| 2026-04-20 | CARTER ROBERT B | Director | L | 7 | 194.70 | $1,362.9 | |
| 2026-04-20 | Lassiter Wright III | Director | L | 6 | 194.70 | $1,168.2 | |
| 2026-04-20 | KUPPUSAMY KARTHIK | SVP, Clinical Solutions | L | 39 | 194.70 | $7,593.3 |
Codes are the SEC's: P open-market purchase, S open-market sale; M exercise, F tax withholding, A grant and G gift are routine. A 10b5-1 flag means the trade ran under a plan adopted in advance. Method notes in where the numbers come from.