Career & Filing History
Every role Margaret A. Horn has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
Margaret A. Horn is a corporate insider at Revolution Medicines, Inc. (RVMD). Horn has also held reporting roles at SANGAMO THERAPEUTICS, INC (SGMO). Horn has reported 12 insider filings with the SEC since 2024. The most recent filing was in June 2026.
Every role Margaret A. Horn has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
Revolution Medicines, Inc. (RVMD)2 filingsUpdated Aug 30, 2026
Margaret A. Horn is Chief Operating Officer of Revolution Medicines, Inc. (RVMD). 11 SEC Form 4 filings on record going back to 2024, most recently on 17 June 2026. Most recent open-market trade: sold $4.74M of RVMD on 17 June 2026. Lifetime open-market sales: $27.89M.
Every recent SEC Form 4 transaction Margaret A. Horn has reported, most recent first.
InsiderAlpha's records for Margaret A. Horn go back to 2024: 11 primary Form 4 filings, an average of 3.7 per year. 39 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Insiders who reported open-market trades in the last 12 months at the companies Margaret A. Horn files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Margaret A. Horn is a corporate insider, tracked as Chief Operating Officer of Revolution Medicines, Inc. (RVMD). InsiderAlpha holds 11 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
2 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases and 19 open-market sales ($27.89M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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