Catherine T. Doherty, EVP of Regional Businesses at Quest Diagnostics ($DGX), sold shares on the open market eight times in the last year for a total of nearly $7 million. Her most recent sale occurred on March 5, 2026. These transactions rank her 1,502nd among 11,678 insiders by sale value, below the average of $8.6 million per insider but above the average of 6.4 sales. She reported no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 4, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 5806 | $204.86 | 77,182.0000 | 111,000,000 | 7.00% | 0.01% |
| March 5, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 5558 | $206.21 | 71,624.0000 | 111,000,000 | 7.20% | 0.01% |
| March 4, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | A | Common Stock | 11364 | $204.86 | 82,988.0000 | 111,000,000 | 15.87% | 0.01% |
| March 3, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 632 | $207.73 | 71,624.0000 | 111,000,000 | 0.87% | 0.00% |
| March 2, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 648 | $204.86 | 72,256.0000 | 111,000,000 | 0.89% | 0.00% |
| Feb. 19, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 1433 | $204.83 | 72,905.0000 | 111,000,000 | 1.93% | 0.00% |
| Feb. 18, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | A | Non-Qualifed Stock Option (right to buy) | 13514 | $0.00 | 13,514.0000 | 111,000,000 | 9999.99% | 0.01% |
| Feb. 18, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 728 | $206.99 | 74,338.0000 | 111,000,000 | 0.97% | 0.00% |
| Feb. 18, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 433 | $210.01 | 75,066.0000 | 111,000,000 | 0.57% | 0.00% |
| Feb. 18, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | A | Common Stock | 2928 | $0.00 | 75,499.0000 | 111,000,000 | 4.03% | 0.00% |
| Feb. 13, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 10122 | $206.37 | 78,041.0000 | 111,000,000 | 11.48% | 0.01% |
| Feb. 13, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | M | Common Stock | 26165 | $112.17 | 98,736.0000 | 111,000,000 | 36.05% | 0.02% |
| Feb. 13, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | M | Non-Qualifed Stock Option (right to buy) | 26165 | $112.17 | 0.0000 | 111,000,000 | 100.00% | 0.02% |
| Feb. 13, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 351 | $209.10 | 72,571.0000 | 111,000,000 | 0.48% | 0.00% |
| Feb. 13, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 1619 | $208.21 | 72,922.0000 | 111,000,000 | 2.17% | 0.00% |
| Feb. 13, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 3500 | $207.08 | 74,541.0000 | 111,000,000 | 4.48% | 0.00% |
| Feb. 13, 2026 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 10573 | $205.21 | 88,163.0000 | 111,000,000 | 10.71% | 0.01% |
| March 5, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 5370 | $174.13 | 72,495.0000 | 111,000,000 | 6.90% | 0.00% |
| March 3, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 394 | $173.74 | 73,211.0000 | 111,000,000 | 0.54% | 0.00% |
| March 4, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 5010 | $173.74 | 77,865.0000 | 111,000,000 | 6.05% | 0.00% |
| March 4, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | A | Common Stock | 10380 | $173.74 | 82,875.0000 | 111,000,000 | 14.32% | 0.01% |
| March 4, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 716 | $175.79 | 72,495.0000 | 111,000,000 | 0.98% | 0.00% |
| Feb. 26, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 455 | $171.75 | 74,430.0000 | 111,000,000 | 0.61% | 0.00% |
| Feb. 27, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 824 | $172.61 | 73,606.0000 | 111,000,000 | 1.11% | 0.00% |
| Feb. 19, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 535 | $169.71 | 75,784.0000 | 111,000,000 | 0.70% | 0.00% |
| Feb. 20, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 899 | $170.99 | 74,885.0000 | 111,000,000 | 1.19% | 0.00% |
| Feb. 12, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | A | Non-Qualifed Stock Option (right to buy) | 13344 | $0.00 | 13,344.0000 | 111,000,000 | 9999.99% | 0.01% |
| Feb. 12, 2025 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | A | Common Stock | 3479 | $0.00 | 76,321.0000 | 111,000,000 | 4.78% | 0.00% |
| Nov. 27, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 4803 | $162.14 | 101,104.0000 | 112,000,000 | 4.54% | 0.00% |
| Nov. 27, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | M | Common Stock | 33103 | $103.57 | 105,907.0000 | 112,000,000 | 45.47% | 0.03% |
| Nov. 27, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | M | Non-Qualifed Stock Option (right to buy) | 33103 | $103.57 | 0.0000 | 112,000,000 | 100.00% | 0.03% |
| Nov. 27, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 28300 | $163.13 | 72,804.0000 | 112,000,000 | 27.99% | 0.03% |
| Feb. 28, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 644 | $126.36 | 80,062.0000 | 111,000,000 | 0.80% | 0.00% |
| Feb. 29, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 1187 | $125.88 | 72,761.0000 | 111,000,000 | 1.61% | 0.00% |
| Feb. 28, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 5557 | $126.57 | 73,948.0000 | 111,000,000 | 6.99% | 0.01% |
| Feb. 28, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 557 | $126.36 | 79,505.0000 | 111,000,000 | 0.70% | 0.00% |
| Feb. 23, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | A | Common Stock | 9314 | $125.02 | 84,463.0000 | 111,000,000 | 12.39% | 0.01% |
| Feb. 23, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 3757 | $125.02 | 80,706.0000 | 111,000,000 | 4.45% | 0.00% |
| Feb. 21, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | F | Common Stock | 493 | $125.02 | 75,970.0000 | 111,000,000 | 0.64% | 0.00% |
| Feb. 22, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | EVP, Regional Businesses | S | Common Stock | 821 | $126.14 | 75,149.0000 | 111,000,000 | 1.08% | 0.00% |
| Feb. 14, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | SVP, Regional Businesses | A | Non-Qualifed Stock Option (right to buy) | 17939 | $0.00 | 17,939.0000 | 111,000,000 | 9999.99% | 0.02% |
| Feb. 14, 2024 | QUEST DIAGNOSTICS INC | $DGX | Doherty Catherine T. | SVP, Regional Businesses | A | Common Stock | 4304 | $0.00 | 76,462.0000 | 111,000,000 | 5.96% | 0.00% |