O'Day Daniel Patrick, Chairman and CEO of Gilead Sciences ($GILD), sold shares on the open market 21 times over the last year, totaling $45.1 million. His most recent sale occurred on February 27, 2026. These sales rank 350th among 11,678 individual insiders in our database, surpassing the average of $8.6 million per seller and 6.4 transactions. He made 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 27, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 10000 | $136.82 | 642,567.0000 | 1,256,000,000 | 1.53% | 0.00% |
| March 10, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Non-qualified Stock Option (Right to Buy) | 122755 | $0.00 | 122,755.0000 | 1,256,000,000 | 9999.99% | 0.01% |
| March 10, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 20026 | $0.00 | 662,334.0000 | 1,256,000,000 | 3.12% | 0.00% |
| March 10, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 9767 | $148.56 | 652,567.0000 | 1,256,000,000 | 1.47% | 0.00% |
| March 10, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 20026 | $0.00 | 68,044.0000 | 1,256,000,000 | 22.74% | 0.00% |
| March 10, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Restricted Stock Unit | 32815 | $0.00 | 100,859.0000 | 1,256,000,000 | 48.23% | 0.00% |
| Feb. 27, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 3481 | $144.04 | 648,827.0000 | 1,256,000,000 | 0.53% | 0.00% |
| Feb. 27, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 6419 | $145.18 | 642,408.0000 | 1,256,000,000 | 0.99% | 0.00% |
| Feb. 27, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 100 | $145.71 | 642,308.0000 | 1,256,000,000 | 0.02% | 0.00% |
| Feb. 27, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Common Stock | 38396 | $0.00 | 652,308.0000 | 1,256,000,000 | 6.25% | 0.00% |
| Feb. 5, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 115640 | $66.01 | 729,552.0000 | 1,256,000,000 | 18.84% | 0.01% |
| Feb. 5, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Non-qualified Stock Option (Right to Buy) | 115640 | $0.00 | 0.0000 | 1,256,000,000 | 100.00% | 0.01% |
| Feb. 5, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 115640 | $150.00 | 613,912.0000 | 1,256,000,000 | 15.85% | 0.01% |
| Feb. 3, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 74461 | $143.28 | 613,912.0000 | 1,256,000,000 | 10.82% | 0.01% |
| Feb. 3, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Common Stock | 131675 | $0.00 | 688,373.0000 | 1,256,000,000 | 23.65% | 0.01% |
| Jan. 28, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 5032 | $139.54 | 561,666.0000 | 1,256,000,000 | 0.89% | 0.00% |
| Jan. 28, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 4968 | $140.24 | 556,698.0000 | 1,256,000,000 | 0.88% | 0.00% |
| Jan. 23, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 115640 | $66.01 | 682,338.0000 | 1,256,000,000 | 20.41% | 0.01% |
| Jan. 23, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Non-qualified Stock Option (Right to Buy) | 115640 | $0.00 | 115,640.0000 | 1,256,000,000 | 50.00% | 0.01% |
| Jan. 23, 2026 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 115640 | $135.00 | 566,698.0000 | 1,256,000,000 | 16.95% | 0.01% |
| Dec. 29, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 10000 | $124.83 | 566,698.0000 | 1,256,000,000 | 1.73% | 0.00% |
| Dec. 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 10426 | $0.00 | 581,629.0000 | 1,256,000,000 | 1.83% | 0.00% |
| Dec. 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 4931 | $121.34 | 576,698.0000 | 1,256,000,000 | 0.85% | 0.00% |
| Dec. 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 10426 | $0.00 | 88,070.0000 | 1,256,000,000 | 10.59% | 0.00% |
| Nov. 28, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 3212 | $125.91 | 577,991.0000 | 1,256,000,000 | 0.55% | 0.00% |
| Nov. 28, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 6788 | $126.84 | 571,203.0000 | 1,256,000,000 | 1.17% | 0.00% |
| Oct. 28, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 7978 | $119.54 | 583,225.0000 | 1,256,000,000 | 1.35% | 0.00% |
| Oct. 28, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 2022 | $118.82 | 581,203.0000 | 1,256,000,000 | 0.35% | 0.00% |
| Sept. 29, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 8039 | $111.47 | 593,164.0000 | 1,255,000,000 | 1.34% | 0.00% |
| Sept. 29, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 1961 | $112.42 | 591,203.0000 | 1,255,000,000 | 0.33% | 0.00% |
| Sept. 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 4949 | $115.25 | 601,203.0000 | 1,255,000,000 | 0.82% | 0.00% |
| Sept. 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 10427 | $0.00 | 606,152.0000 | 1,255,000,000 | 1.75% | 0.00% |
| Sept. 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 10427 | $0.00 | 98,496.0000 | 1,255,000,000 | 9.57% | 0.00% |
| Aug. 28, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 10000 | $113.63 | 595,725.0000 | 1,255,000,000 | 1.65% | 0.00% |
| July 28, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 1655 | $113.17 | 614,070.0000 | 1,255,000,000 | 0.27% | 0.00% |
| July 28, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 8345 | $114.09 | 605,725.0000 | 1,255,000,000 | 1.36% | 0.00% |
| June 30, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 9400 | $110.40 | 616,325.0000 | 1,255,000,000 | 1.50% | 0.00% |
| June 30, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 600 | $111.15 | 615,725.0000 | 1,255,000,000 | 0.10% | 0.00% |
| June 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 10425 | $0.00 | 630,693.0000 | 1,255,000,000 | 1.68% | 0.00% |
| June 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 10425 | $0.00 | 108,923.0000 | 1,255,000,000 | 8.73% | 0.00% |
| June 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 4968 | $110.09 | 625,725.0000 | 1,255,000,000 | 0.79% | 0.00% |
| May 30, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 6416 | $110.11 | 623,852.0000 | 1,255,000,000 | 1.02% | 0.00% |
| May 30, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | S | Common Stock | 3584 | $110.96 | 620,268.0000 | 1,255,000,000 | 0.57% | 0.00% |
| March 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 24024 | $0.00 | 80,953.0000 | 1,255,000,000 | 22.89% | 0.00% |
| March 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 24024 | $0.00 | 641,900.0000 | 1,255,000,000 | 3.89% | 0.00% |
| March 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 11632 | $117.21 | 630,268.0000 | 1,255,000,000 | 1.81% | 0.00% |
| March 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Non-qualified Stock Option (Right to Buy) | 169690 | $0.00 | 169,690.0000 | 1,255,000,000 | 9999.99% | 0.01% |
| March 10, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Restricted Stock Unit | 38395 | $0.00 | 119,348.0000 | 1,255,000,000 | 47.43% | 0.00% |
| Feb. 4, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Common Stock | 60031 | $0.00 | 561,559.0000 | 1,255,000,000 | 11.97% | 0.00% |
| Feb. 4, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Common Stock | 164473 | $0.00 | 726,032.0000 | 1,255,000,000 | 29.29% | 0.01% |
| Feb. 4, 2025 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 108156 | $97.99 | 617,876.0000 | 1,255,000,000 | 14.90% | 0.01% |
| Dec. 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 10295 | $0.00 | 104,977.0000 | 1,254,000,000 | 8.93% | 0.00% |
| Dec. 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 10295 | $0.00 | 506,290.0000 | 1,254,000,000 | 2.08% | 0.00% |
| Dec. 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 4762 | $92.34 | 501,528.0000 | 1,254,000,000 | 0.94% | 0.00% |
| Sept. 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 4749 | $81.44 | 495,995.0000 | 1,258,000,000 | 0.95% | 0.00% |
| Sept. 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 10295 | $0.00 | 500,744.0000 | 1,258,000,000 | 2.10% | 0.00% |
| Sept. 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 10295 | $0.00 | 115,272.0000 | 1,258,000,000 | 8.20% | 0.00% |
| June 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 4693 | $65.25 | 490,449.0000 | 1,258,000,000 | 0.95% | 0.00% |
| June 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 10295 | $0.00 | 495,142.0000 | 1,258,000,000 | 2.12% | 0.00% |
| June 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 10295 | $0.00 | 125,567.0000 | 1,258,000,000 | 7.58% | 0.00% |
| March 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Non-qualified Stock Option (Right to Buy) | 279130 | $0.00 | 279,130.0000 | 1,258,000,000 | 9999.99% | 0.02% |
| March 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 10800 | $0.00 | 479,489.0000 | 1,258,000,000 | 2.30% | 0.00% |
| March 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 19140 | $0.00 | 498,629.0000 | 1,258,000,000 | 3.99% | 0.00% |
| March 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 13782 | $75.12 | 484,847.0000 | 1,258,000,000 | 2.76% | 0.00% |
| March 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 10800 | $0.00 | 100,092.0000 | 1,258,000,000 | 9.74% | 0.00% |
| March 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 19140 | $0.00 | 80,952.0000 | 1,258,000,000 | 19.12% | 0.00% |
| March 10, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Restricted Stock Unit | 54910 | $0.00 | 135,862.0000 | 1,258,000,000 | 67.83% | 0.00% |
| Jan. 31, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 79335 | $78.26 | 468,689.0000 | 1,258,000,000 | 14.48% | 0.01% |
| Jan. 31, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Common Stock | 179877 | $0.00 | 548,024.0000 | 1,258,000,000 | 48.86% | 0.01% |
| Jan. 31, 2024 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Common Stock | 50870 | $0.00 | 368,147.0000 | 1,258,000,000 | 16.03% | 0.00% |
| Dec. 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 7347 | $0.00 | 110,892.0000 | 1,262,000,000 | 6.21% | 0.00% |
| Dec. 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 7347 | $0.00 | 391,032.0000 | 1,262,000,000 | 1.91% | 0.00% |
| Dec. 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 3341 | $79.02 | 387,691.0000 | 1,262,000,000 | 0.85% | 0.00% |
| Sept. 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 3366 | $76.00 | 383,685.0000 | 1,262,000,000 | 0.87% | 0.00% |
| Sept. 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 7348 | $0.00 | 118,239.0000 | 1,262,000,000 | 5.85% | 0.00% |
| Sept. 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 7348 | $0.00 | 387,051.0000 | 1,262,000,000 | 1.94% | 0.00% |
| June 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 7346 | $0.00 | 125,587.0000 | 1,262,000,000 | 5.53% | 0.00% |
| June 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 7346 | $0.00 | 269,534.0000 | 1,262,000,000 | 2.80% | 0.00% |
| June 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 3409 | $78.12 | 266,125.0000 | 1,262,000,000 | 1.26% | 0.00% |
| March 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 19488 | $0.00 | 96,563.0000 | 1,262,000,000 | 16.79% | 0.00% |
| March 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Non-qualified Stock Option (Right to Buy) | 215095 | $0.00 | 215,095.0000 | 1,262,000,000 | 9999.99% | 0.02% |
| March 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Restricted Stock Unit | 47170 | $0.00 | 132,933.0000 | 1,262,000,000 | 55.00% | 0.00% |
| March 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 10800 | $0.00 | 85,763.0000 | 1,262,000,000 | 11.18% | 0.00% |
| March 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 14017 | $79.50 | 375,766.0000 | 1,262,000,000 | 3.60% | 0.00% |
| March 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 10800 | $0.00 | 389,783.0000 | 1,262,000,000 | 2.85% | 0.00% |
| March 10, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 19488 | $0.00 | 378,983.0000 | 1,262,000,000 | 5.42% | 0.00% |
| March 1, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Common Stock | 11362 | $0.00 | 364,337.0000 | 1,262,000,000 | 3.22% | 0.00% |
| March 1, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 4842 | $79.59 | 359,495.0000 | 1,262,000,000 | 1.33% | 0.00% |
| March 1, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | M | Restricted Stock Unit | 11362 | $0.00 | 116,051.0000 | 1,262,000,000 | 8.92% | 0.00% |
| Jan. 24, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | F | Common Stock | 59078 | $84.02 | 352,975.0000 | 1,262,000,000 | 14.34% | 0.00% |
| Jan. 24, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Common Stock | 78370 | $0.00 | 275,406.0000 | 1,262,000,000 | 39.77% | 0.01% |
| Jan. 24, 2023 | GILEAD SCIENCES, INC. | $GILD | O'Day Daniel Patrick | Chairman & CEO | A | Common Stock | 136647 | $0.00 | 412,053.0000 | 1,262,000,000 | 49.62% | 0.01% |