Lee Gary K., Chief Scientific Officer at Lyell Immunopharma ($LYEL), sold shares on the open market six times over the last year, totaling $62,819. His most recent sale occurred on February 11, 2026. These transactions rank 10,134th among 11,678 insiders in the database by sale value, well below the average of $8.6 million across about six sales per insider. Lee Gary K. 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 11, 2026 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | S | Common Stock | 1671 | $23.39 | 16,938.0000 | 21,218,217 | 8.98% | 0.01% |
| Feb. 10, 2026 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Option (right to buy) | 50000 | $0.00 | 50,000.0000 | 21,218,217 | 9999.99% | 0.24% |
| Feb. 10, 2026 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | S | Common Stock | 147 | $23.12 | 18,609.0000 | 21,218,217 | 0.78% | 0.00% |
| Feb. 9, 2026 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Common Stock | 4000 | $0.00 | 18,756.0000 | 21,218,217 | 27.11% | 0.02% |
| Nov. 10, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | S | Common Stock | 138 | $16.16 | 15,366.0000 | 295,228,868 | 0.89% | 0.00% |
| Oct. 27, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Option (right to buy) | 68000 | $0.00 | 68,000.0000 | 295,228,868 | 9999.99% | 0.02% |
| Aug. 21, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | S | Common Stock | 1453 | $10.54 | 15,504.0000 | 295,228,868 | 8.57% | 0.00% |
| Aug. 20, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Common Stock | 8000 | $0.00 | 16,957.0000 | 295,228,868 | 89.32% | 0.00% |
| Aug. 11, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | S | Common Stock | 131 | $10.53 | 9,093.0000 | 295,228,868 | 1.42% | 0.00% |
| Aug. 12, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | S | Common Stock | 136 | $10.34 | 8,957.0000 | 295,228,868 | 1.50% | 0.00% |
| Feb. 10, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Option (right to buy) | 56250 | $0.00 | 56,250.0000 | 0 | 9999.99% | 0.00% |
| Feb. 10, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Common Stock | 112500 | $0.00 | 176,696.0000 | 0 | 175.24% | 0.00% |
| Feb. 10, 2025 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Option (right to buy) | 450000 | $0.00 | 450,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 9, 2024 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Stock Option (right to buy) | 400000 | $0.00 | 400,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 9, 2024 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Common Stock | 40000 | $0.00 | 52,700.0000 | 0 | 314.96% | 0.00% |
| Nov. 16, 2023 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | D | Stock Option (right to buy) | 800000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Nov. 16, 2023 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Stock Option (right to buy) | 800000 | $0.00 | 800,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 24, 2023 | Lyell Immunopharma, Inc. | $LYEL | Lee Gary K. | Chief Scientific Officer | A | Option (right to buy) | 600000 | $0.00 | 600,000.0000 | 0 | 9999.99% | 0.00% |