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  • Insider Ownership

Insider Trading & Ownership of Margaret A. Horn

Location
Palo Alto, CA
Summary
The estimated net worth of Margaret A. Horn is at least $15,713,145 dollars as of 19 Mar 2026. Margaret A. Horn is the Chief Operating Officer of Revolution Medicines, Inc. and owns shares of Revolution Medicines, Inc. (RVMD) stock worth about $15.68M. Margaret A. Horn is the Director of SANGAMO THERAPEUTICS, INC and owns shares of SANGAMO THERAPEUTICS, INC (SGMO) stock worth about $38K.
Signature
/s/ Jack Anders, as Attorney-in-fact for Margaret Horn
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Quick Takeaways

  • Margaret A. Horn has 2 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $15,713,145.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: Revolution Medicines, Inc. ($15,675,126).
  • Past-year value change for that position: -$8,728,892.

Why This Matters

  • This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
  • You can cross-check role, issuer, and filing chronology directly against the SEC source.

Official SEC Source

Filed on Form 4

Insider ownership context is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Ownership of Margaret A. Horn

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
RVMD, RVMDW Revolution Medicines, Inc. Chief Operating Officer $15,675,126 -$8,728,892 -36% 17 Mar 2026
SGMO SANGAMO THERAPEUTICS, INC Director $38,019 12 Jun 2025

Insider Transactions Reported by Margaret A. Horn:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

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