Margaret A. Horn, Chief Operating Officer of Revolution Medicines, Inc. ($RVMD), sold shares on the open market seven times in the last 365 days for a total of $8.4 million. Her most recent sale occurred on January 7, 2026. These open market sales rank 1,293rd among 11,678 individual insiders in the database, compared to an average sale amount of $8.6 million across 6.4 transactions. Horn 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 17, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 4583 | $99.48 | 157,570.0000 | 193,319,805 | 2.83% | 0.00% |
| March 1, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | A | Stock Option (Right to Buy) | 47600 | $0.00 | 47,600.0000 | 193,319,805 | 9999.99% | 0.02% |
| March 1, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | A | Common Stock | 21100 | $0.00 | 162,153.0000 | 193,319,805 | 14.96% | 0.01% |
| Jan. 7, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 53096 | $100.02 | 162,957.0000 | 193,319,805 | 24.58% | 0.03% |
| Jan. 7, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 51406 | $42.45 | 192,459.0000 | 193,319,805 | 36.44% | 0.03% |
| Jan. 7, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 20204 | $101.79 | 142,753.0000 | 193,319,805 | 12.40% | 0.01% |
| Jan. 7, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 1700 | $102.90 | 141,053.0000 | 193,319,805 | 1.19% | 0.00% |
| Jan. 7, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 51406 | $0.00 | 1,094.0000 | 193,319,805 | 97.92% | 0.03% |
| Jan. 7, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 23594 | $0.00 | 119,906.0000 | 193,319,805 | 16.44% | 0.01% |
| Jan. 7, 2026 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 23594 | $29.80 | 216,053.0000 | 193,319,805 | 12.26% | 0.01% |
| Dec. 16, 2025 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 4847 | $76.82 | 141,053.0000 | 193,319,805 | 3.32% | 0.00% |
| Sept. 16, 2025 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 4775 | $45.82 | 145,900.0000 | 185,913,326 | 3.17% | 0.00% |
| June 16, 2025 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 3510 | $39.83 | 150,675.0000 | 185,913,326 | 2.28% | 0.00% |
| June 12, 2025 | SANGAMO THERAPEUTICS, INC | $SGMO | Horn Margaret A | Not found | A | Stock Option (Right to Buy) | 50000 | $0.00 | 50,000.0000 | 224,710,019 | 9999.99% | 0.02% |
| June 12, 2025 | SANGAMO THERAPEUTICS, INC | $SGMO | Horn Margaret A | Not found | A | Common Stock | 25000 | $0.00 | 82,650.0000 | 224,710,019 | 43.37% | 0.01% |
| March 17, 2025 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 3058 | $39.04 | 153,533.0000 | 185,913,326 | 1.95% | 0.00% |
| March 1, 2025 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | A | Common Stock | 28600 | $0.00 | 156,591.0000 | 185,913,326 | 22.35% | 0.02% |
| March 1, 2025 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | A | Stock Option (Right to Buy) | 100100 | $0.00 | 100,100.0000 | 185,913,326 | 9999.99% | 0.05% |
| Dec. 16, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 4329 | $45.40 | 127,991.0000 | 0 | 3.27% | 0.00% |
| Oct. 11, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 44631 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Oct. 11, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 44631 | $4.09 | 176,951.0000 | 0 | 33.73% | 0.00% |
| Oct. 11, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 5369 | $4.09 | 182,320.0000 | 0 | 3.03% | 0.00% |
| Oct. 11, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 50000 | $50.34 | 132,320.0000 | 0 | 27.42% | 0.00% |
| Oct. 11, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 5369 | $0.00 | 97,382.0000 | 0 | 5.23% | 0.00% |
| Sept. 16, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 4331 | $44.19 | 132,320.0000 | 0 | 3.17% | 0.00% |
| June 17, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 4415 | $37.39 | 136,651.0000 | 0 | 3.13% | 0.00% |
| June 4, 2024 | SANGAMO THERAPEUTICS, INC | $SGMO | Horn Margaret A | Not found | A | Stock Option (Right to Buy) | 50000 | $0.00 | 50,000.0000 | 0 | 9999.99% | 0.00% |
| June 4, 2024 | SANGAMO THERAPEUTICS, INC | $SGMO | Horn Margaret A | Not found | A | Common Stock | 25000 | $0.00 | 57,650.0000 | 0 | 76.57% | 0.00% |
| March 18, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 2914 | $31.58 | 139,553.0000 | 0 | 2.05% | 0.00% |
| March 12, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 7936 | $4.09 | 150,403.0000 | 0 | 5.57% | 0.00% |
| March 11, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 15735 | $0.00 | 52,567.0000 | 0 | 23.04% | 0.00% |
| March 12, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 7936 | $0.00 | 44,631.0000 | 0 | 15.10% | 0.00% |
| March 11, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 15735 | $34.02 | 142,467.0000 | 0 | 9.95% | 0.00% |
| March 12, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 7936 | $34.07 | 142,467.0000 | 0 | 5.28% | 0.00% |
| March 11, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 15735 | $4.09 | 158,202.0000 | 0 | 11.04% | 0.00% |
| March 1, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | A | Stock Option (Right to Buy) | 143500 | $0.00 | 143,500.0000 | 0 | 9999.99% | 0.00% |
| March 1, 2024 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | A | Common Stock | 41000 | $0.00 | 142,467.0000 | 0 | 40.41% | 0.00% |
| Dec. 18, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 2993 | $25.90 | 101,467.0000 | 0 | 2.87% | 0.00% |
| Dec. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 5000 | $4.09 | 109,460.0000 | 0 | 4.79% | 0.00% |
| Dec. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 5000 | $26.64 | 104,460.0000 | 0 | 4.57% | 0.00% |
| Dec. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 5000 | $0.00 | 68,302.0000 | 0 | 6.82% | 0.00% |
| Dec. 6, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 5000 | $4.09 | 109,460.0000 | 0 | 4.79% | 0.00% |
| Dec. 6, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 5000 | $25.00 | 104,460.0000 | 0 | 4.57% | 0.00% |
| Dec. 6, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 5000 | $0.00 | 73,302.0000 | 0 | 6.39% | 0.00% |
| Oct. 25, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 7500 | $0.54 | 104,460.0000 | 0 | 7.74% | 0.00% |
| Oct. 25, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 7500 | $0.00 | 5,941.0000 | 0 | 55.80% | 0.00% |
| Oct. 16, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 400 | $35.00 | 96,960.0000 | 0 | 0.41% | 0.00% |
| Oct. 16, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 25000 | $0.00 | 78,302.0000 | 0 | 24.20% | 0.00% |
| Oct. 16, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 23200 | $34.02 | 97,360.0000 | 0 | 19.24% | 0.00% |
| Oct. 16, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 800 | $33.23 | 120,560.0000 | 0 | 0.66% | 0.00% |
| Oct. 16, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 500 | $31.96 | 121,360.0000 | 0 | 0.41% | 0.00% |
| Oct. 16, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 100 | $30.15 | 121,860.0000 | 0 | 0.08% | 0.00% |
| Oct. 16, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 25000 | $4.09 | 121,960.0000 | 0 | 25.78% | 0.00% |
| Sept. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 5000 | $4.09 | 104,474.0000 | 0 | 5.03% | 0.00% |
| Sept. 18, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 2514 | $31.31 | 96,960.0000 | 0 | 2.53% | 0.00% |
| Sept. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 5000 | $32.08 | 99,474.0000 | 0 | 4.79% | 0.00% |
| Sept. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 5000 | $0.00 | 103,302.0000 | 0 | 4.62% | 0.00% |
| Aug. 31, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 10000 | $0.00 | 108,302.0000 | 0 | 8.45% | 0.00% |
| Aug. 31, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 10000 | $34.05 | 99,474.0000 | 0 | 9.13% | 0.00% |
| Aug. 31, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 10000 | $4.09 | 109,474.0000 | 0 | 10.05% | 0.00% |
| Aug. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 1915 | $30.80 | 99,474.0000 | 0 | 1.89% | 0.00% |
| Aug. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Common Stock | 5000 | $4.09 | 104,474.0000 | 0 | 5.03% | 0.00% |
| Aug. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 3085 | $30.36 | 101,389.0000 | 0 | 2.95% | 0.00% |
| Aug. 15, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | M | Stock Option (Right to Buy) | 5000 | $0.00 | 118,302.0000 | 0 | 4.06% | 0.00% |
| June 20, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | Chief Operating Officer | S | Common Stock | 2102 | $24.89 | 99,474.0000 | 0 | 2.07% | 0.00% |
| March 17, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | See Remarks | S | Common Stock | 1230 | $21.78 | 100,062.0000 | 0 | 1.21% | 0.00% |
| March 1, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | See Remarks | A | Stock Option (Right to Buy) | 140000 | $0.00 | 140,000.0000 | 0 | 9999.99% | 0.00% |
| March 1, 2023 | Revolution Medicines, Inc. | $RVMD | Horn Margaret A | See Remarks | A | Common Stock | 40000 | $0.00 | 101,292.0000 | 0 | 65.26% | 0.00% |