Mark E. Delaney, SVP and Chief Commercial Officer at Quest Diagnostics ($DGX), sold about $1.8 million in company shares on the open market across three transactions in the last year. His most recent sale occurred on November 18, 2025. These sales rank 3701st among 11,678 insiders in our database, well below the average of $8.6 million and 6 transactions per seller. Delaney made no open market purchases during 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 | DELANEY MARK E | SVP & Chief Commercial Officer | A | Common Stock | 5682 | $204.86 | 14,190.0000 | 111,000,000 | 66.78% | 0.01% |
| March 4, 2026 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 2326 | $204.86 | 11,864.0000 | 111,000,000 | 16.39% | 0.00% |
| March 2, 2026 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 188 | $204.86 | 8,508.0000 | 111,000,000 | 2.16% | 0.00% |
| Feb. 18, 2026 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 230 | $206.99 | 8,681.0000 | 111,000,000 | 2.58% | 0.00% |
| Feb. 18, 2026 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | A | Common Stock | 1586 | $0.00 | 9,116.0000 | 111,000,000 | 21.06% | 0.00% |
| Feb. 18, 2026 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 205 | $210.01 | 8,911.0000 | 111,000,000 | 2.25% | 0.00% |
| Feb. 18, 2026 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | A | Non-Qualifed Stock Option (right to buy) | 7332 | $0.00 | 7,332.0000 | 111,000,000 | 9999.99% | 0.01% |
| Jan. 28, 2026 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | L | Common Stock | 15 | $183.51 | 8,696.0000 | 111,000,000 | 0.17% | 0.00% |
| Nov. 18, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | M | Common Stock | 7846 | $144.47 | 15,376.0000 | 111,000,000 | 104.20% | 0.01% |
| Nov. 18, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | M | Non-Qualifed Stock Option (right to buy) | 100 | $143.33 | 7,484.0000 | 111,000,000 | 1.32% | 0.00% |
| Nov. 18, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | M | Non-Qualifed Stock Option (right to buy) | 7846 | $144.47 | 0.0000 | 111,000,000 | 100.00% | 0.01% |
| Nov. 18, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | S | Common Stock | 7946 | $187.35 | 7,530.0000 | 111,000,000 | 51.34% | 0.01% |
| Nov. 18, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | M | Common Stock | 100 | $143.33 | 15,476.0000 | 111,000,000 | 0.65% | 0.00% |
| Oct. 21, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | A | Common Stock | 15 | $189.08 | 7,530.0000 | 111,000,000 | 0.20% | 0.00% |
| July 21, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | L | Common Stock | 17 | $167.49 | 7,515.0000 | 112,000,000 | 0.23% | 0.00% |
| May 12, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | S | Common Stock | 874 | $175.72 | 8,372.0000 | 111,000,000 | 9.45% | 0.00% |
| May 13, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | S | Common Stock | 874 | $175.31 | 7,498.0000 | 111,000,000 | 10.44% | 0.00% |
| April 21, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | L | Common Stock | 25 | $164.42 | 9,246.0000 | 111,000,000 | 0.27% | 0.00% |
| March 26, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 256 | $166.71 | 9,221.0000 | 111,000,000 | 2.70% | 0.00% |
| March 4, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 1823 | $173.74 | 9,477.0000 | 111,000,000 | 16.13% | 0.00% |
| March 4, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | A | Common Stock | 5317 | $173.74 | 11,300.0000 | 111,000,000 | 88.87% | 0.00% |
| Feb. 26, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 214 | $171.75 | 5,983.0000 | 111,000,000 | 3.45% | 0.00% |
| Feb. 19, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 242 | $169.71 | 6,197.0000 | 111,000,000 | 3.76% | 0.00% |
| Feb. 12, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | A | Non-Qualifed Stock Option (right to buy) | 6960 | $0.00 | 6,960.0000 | 111,000,000 | 9999.99% | 0.01% |
| Feb. 12, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | A | Common Stock | 1815 | $0.00 | 6,439.0000 | 111,000,000 | 39.25% | 0.00% |
| Feb. 5, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | S | Common Stock | 403 | $164.30 | 4,624.0000 | 111,000,000 | 8.02% | 0.00% |
| Jan. 29, 2025 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | L | Common Stock | 4 | $158.03 | 5,027.0000 | 111,000,000 | 0.08% | 0.00% |
| Oct. 21, 2024 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | L | Common Stock | 4 | $149.39 | 5,023.0000 | 112,000,000 | 0.08% | 0.00% |
| July 24, 2024 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | S | Common Stock | 420 | $143.08 | 5,019.0000 | 111,000,000 | 7.72% | 0.00% |
| July 22, 2024 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | L | Common Stock | 6 | $146.98 | 5,439.0000 | 111,000,000 | 0.11% | 0.00% |
| March 26, 2024 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 170 | $128.11 | 5,433.0000 | 111,000,000 | 3.03% | 0.00% |
| Feb. 28, 2024 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | F | Common Stock | 225 | $126.36 | 5,603.0000 | 111,000,000 | 3.86% | 0.00% |
| Feb. 14, 2024 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | A | Non-Qualifed Stock Option (right to buy) | 9783 | $0.00 | 9,783.0000 | 111,000,000 | 9999.99% | 0.01% |
| Feb. 14, 2024 | QUEST DIAGNOSTICS INC | $DGX | DELANEY MARK E | SVP & Chief Commercial Officer | A | Common Stock | 2348 | $0.00 | 5,828.0000 | 111,000,000 | 67.47% | 0.00% |