![Peg Horn](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Peg Horn
Chief Operating Officer at
REVOLUTION MEDICINES, INC.
Net worth: 24 M $ as of 2026-05-30
Profile
Margaret A. Horn is currently an Independent Director at Sangamo Therapeutics, Inc. since 2022.
She serves as Secretary & General Counsel at Genencor International, Inc. since 1991.
She is a Member of The State Bar of California and the Pennsylvania State Bar Association.
She is Chief Operating Officer at Revolution Medicines, Inc. since 2018.
Formerly, Ms. Horn was General Counsel & Secretary at Kosan Biosciences, Inc. from 2005 to 2007.
She was SVP-Corporate Development & General Counsel at Cogentus Pharmaceuticals, Inc. in 2009.
She worked as Principal at E.I.
du Pont de Nemours & Co. She was Chief Operating Officer at Prolynx LLC from 2010 to 2014.
Education includes undergraduate studies at the University of the Sciences in Philadelphia, graduate studies at Charles Widger School of Law, and an MBA from The Pennsylvania State University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-06-16 | 154,647 ( 0.07% ) | 24 M $ | 2026-05-30 | |
| 2025-06-11 | 82,650 ( 0.02% ) | 18 018 $ | 2026-05-30 |
Peg Horn active positions
| Companies | Position | Start |
|---|---|---|
| REVOLUTION MEDICINES, INC. | Chief Operating Officer | 2018-09-30 |
| SANGAMO THERAPEUTICS, INC. | Director/Board Member | 2022-12-14 |
Genencor International, Inc.
 Genencor International, Inc. BiotechnologyHealth Technology Develops and manufactures enzyme product solutions | General Counsel | 1990-12-31 |
Pennsylvania State Bar Association
 Pennsylvania State Bar Association Miscellaneous Commercial ServicesCommercial Services Operates as association for lawyers and law students | Corporate Officer/Principal | - |
The State Bar of California
 The State Bar of California Miscellaneous Commercial ServicesCommercial Services Operates as a official attorney licensing agency | Corporate Officer/Principal | - |
Former positions of Peg Horn
| Companies | Position | End |
|---|---|---|
Prolynx LLC
 Prolynx LLC Miscellaneous Commercial ServicesCommercial Services Provides biological research services | Chief Operating Officer | 2014-11-30 |
Cogentus Pharmaceuticals, Inc.
 Cogentus Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceutical products | General Counsel | 2009-12-17 |
E.I. du Pont de Nemours & Co. /Clysar Shrink Film Operations/
 E.I. du Pont de Nemours & Co. /Clysar Shrink Film Operations/ Chemicals: SpecialtyProcess Industries Manufactures specialty resins used in multi-layer food and non-food packaging structures | Corporate Officer/Principal | - |
Kosan Biosciences, Inc.
 Kosan Biosciences, Inc. Pharmaceuticals: MajorHealth Technology Develops drugs for cancer therapeutics | General Counsel | 2007-08-23 |
Training of Peg Horn
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
81
1st degree connections
12
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 12 |
|---|---|
Sangamo Therapeutics, Inc.
 Sangamo Therapeutics, Inc. BiotechnologyHealth Technology Operates as a genomic medicine company | Health Technology |
Kosan Biosciences, Inc.
Kosan Biosciences, Inc. Pharmaceuticals: MajorHealth Technology Develops drugs for cancer therapeutics | Health Technology |
Genencor International, Inc.
Genencor International, Inc. BiotechnologyHealth Technology Develops and manufactures enzyme product solutions | Health Technology |
Cogentus Pharmaceuticals, Inc.
Cogentus Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceutical products | Health Technology |
E.I. du Pont de Nemours & Co. /Clysar Shrink Film Operations/
E.I. du Pont de Nemours & Co. /Clysar Shrink Film Operations/ Chemicals: SpecialtyProcess Industries Manufactures specialty resins used in multi-layer food and non-food packaging structures | Process Industries |
The Pennsylvania State University
 The Pennsylvania State University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of the Sciences in Philadelphia
 University of the Sciences in Philadelphia Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
The State Bar of California
The State Bar of California Miscellaneous Commercial ServicesCommercial Services Operates as a official attorney licensing agency | Commercial Services |
Pennsylvania State Bar Association
Pennsylvania State Bar Association Miscellaneous Commercial ServicesCommercial Services Operates as association for lawyers and law students | Commercial Services |
Revolution Medicines, Inc.
 Revolution Medicines, Inc. Pharmaceuticals: OtherHealth Technology Develops new therapies derived from natural products | Health Technology |
Prolynx LLC
Prolynx LLC Miscellaneous Commercial ServicesCommercial Services Provides biological research services | Commercial Services |
Charles Widger School of Law
 Charles Widger School of Law Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
- Stock Market
- Insiders
- Peg Horn
