Margaret A. Horn

Companies

• SANGAMO THERAPEUTICS, INCBoard member Dec 19, 2022 to now¹
• Revolution Medicines (United States)Chief operating officer Nov 2, 2022 to now²
• Revolution Medicines (United States)Officer Feb 12, 2020 to Mar 21, 2023³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• RMRevolution Medicines (United States) RVMD149,680 shares⁴$27.3M at $182.09Sep 16, 2026
• STSANGAMO THERAPEUTICS, INC SGMOQ82,650 shares⁵$9.1K at $0.11Jun 12, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

• Sep 16, 2026Sold 4,891 shares at $199.30 of Revolution Medicines (United States)⁴
• Sep 16, 2026Sold 76 shares at $195.01 of Revolution Medicines (United States)⁴
• Jun 17, 2026Sold 29,600 shares at $160.12 of Revolution Medicines (United States)⁶
• Jun 17, 2026Exercised options 25,725 shares at $26.50 of Revolution Medicines (United States)⁶
• Jun 17, 2026Exercised options 3,302 shares at $29.80 of Revolution Medicines (United States)⁶
• Jun 17, 2026Exercised options 573 shares at $40.74 of Revolution Medicines (United States)⁶
• Jun 15, 2026Sold 60,400 shares at $160.17 of Revolution Medicines (United States)⁶
• Jun 15, 2026Exercised options 44,854 shares at $29.80 of Revolution Medicines (United States)⁶
• Jun 15, 2026Exercised options 15,546 shares at $40.74 of Revolution Medicines (United States)⁶
• Jun 11, 2026Sold 200 shares at $150.17 of Revolution Medicines (United States)⁷
• Jun 11, 2026Sold 4,600 shares at $149.64 of Revolution Medicines (United States)⁷
• Jun 11, 2026Sold 1,800 shares at $148.72 of Revolution Medicines (United States)⁷
• Jun 11, 2026Sold 500 shares at $147.27 of Revolution Medicines (United States)⁷
• Jun 11, 2026Sold 700 shares at $146.04 of Revolution Medicines (United States)⁷
• Jun 11, 2026Sold 885 shares at $145.15 of Revolution Medicines (United States)⁷
• Jun 11, 2026Sold 1,315 shares at $144.28 of Revolution Medicines (United States)⁷
• Jun 11, 2026Exercised options 8,906 shares at $40.74 of Revolution Medicines (United States)⁷
• Jun 11, 2026Exercised options 1,094 shares at $42.45 of Revolution Medicines (United States)⁷
• Mar 17, 2026Sold 4,583 shares at $99.48 of Revolution Medicines (United States)⁸
• Mar 1, 2026Granted 21,100 shares of Revolution Medicines (United States)⁹
• Jan 7, 2026Sold 1,700 shares at $102.90 of Revolution Medicines (United States)¹⁰
• Jan 7, 2026Sold 20,204 shares at $101.79 of Revolution Medicines (United States)¹⁰
• Jan 7, 2026Sold 53,096 shares at $100.02 of Revolution Medicines (United States)¹⁰
• Jan 7, 2026Exercised options 23,594 shares at $29.80 of Revolution Medicines (United States)¹⁰
• Jan 7, 2026Exercised options 51,406 shares at $42.45 of Revolution Medicines (United States)¹⁰