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Yvonne Greenstreet
Chief Executive Officer at
ALNYLAM PHARMACEUTICALS, INC.
Net worth: 29 M $ as of 31/01/2026
Profile
Yvonne L. Greenstreet founded Highgate LLC. Currently, Dr. Greenstreet is President & Chief Operating Officer of Alnylam Pharmaceuticals, Inc. Dr. Greenstreet is also on the board of Pacira Biosciences, Inc. and Member of The Association of the British Pharmaceutical Industry. Dr. Greenstreet previously occupied the position of Managing Director at Highgate LLC, Senior Vice President & Head-Medicines Development at Pfizer Inc. and Chief Strategy-R&D, Senior Vice President at GlaxoSmithKline Plc. Yvonne L. Greenstreet received an MBA from INSEAD and an undergraduate degree from the University of Leeds.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 13/02/2026 | 86,069 ( 0.07% ) | 29 M $ | 31/01/2026 |
Latest news about Yvonne Greenstreet
Yvonne Greenstreet active positions
| Companies | Position | Start |
|---|---|---|
| ALNYLAM PHARMACEUTICALS, INC. | Chief Executive Officer | 01/01/2022 |
The Association of the British Pharmaceutical Industry
 The Association of the British Pharmaceutical Industry Miscellaneous Commercial ServicesCommercial Services Operates pharmaceutical companies associations | Corporate Officer/Principal | - |
Harvard Medical School
 Harvard Medical School Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | - |
Biotechnology Innovation Organization
 Biotechnology Innovation Organization Miscellaneous Commercial ServicesCommercial Services Operates as a biotechnology advocacy organization representing biotech companies, industry leaders and state biotech associations | Director/Board Member | - |
Former positions of Yvonne Greenstreet
| Companies | Position | End |
|---|---|---|
| PACIRA BIOSCIENCES, INC. | Director/Board Member | 31/03/2023 |
| ARGENX SE | Director/Board Member | 03/03/2022 |
Indivior Ltd.
 Indivior Ltd. Pharmaceuticals: MajorHealth Technology Develops and commercializes pharmaceutical drugs | Director/Board Member | 31/03/2019 |
| MOELIS & COMPANY | Director/Board Member | 31/12/2018 |
Highgate LLC
 Highgate LLC Real Estate DevelopmentFinance Operates nonresidential buildings | Chief Executive Officer | 01/08/2016 |
Training of Yvonne Greenstreet
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
81
1st degree connections
16
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 16 |
|---|---|
Pfizer Inc.
 Pfizer Inc. Pharmaceuticals: MajorHealth Technology Engages in discovery, development, manufacturing, marketing, sale and distribution of biopharmaceutical products & ingredients | Health Technology |
Molecular Insight Pharmaceuticals, Inc.
 Molecular Insight Pharmaceuticals, Inc. Medical/Nursing ServicesHealth Services Develops and commercializes innovative molecular imaging pharmaceuticals | Health Services |
Biotechnology Innovation Organization
Biotechnology Innovation Organization Miscellaneous Commercial ServicesCommercial Services Operates as a biotechnology advocacy organization representing biotech companies, industry leaders and state biotech associations | Commercial Services |
Indivior Ltd.
Indivior Ltd. Pharmaceuticals: MajorHealth Technology Develops and commercializes pharmaceutical drugs | Health Technology |
GSK Plc
 GSK Plc Pharmaceuticals: MajorHealth Technology Develops, manufactures and distributes vaccines and other pharmaceutical products | Health Technology |
Pacira Biosciences, Inc.
 Pacira Biosciences, Inc. Pharmaceuticals: MajorHealth Technology Develops and manufactures injectable therapeutic products | Health Technology |
Alnylam Pharmaceuticals, Inc.
 Alnylam Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops and commercializes therapeutics based on RNA interference | Health Technology |
University of Leeds
 University of Leeds Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
INSEAD
 INSEAD Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
The American Funds Group
 The American Funds Group Investment Trusts/Mutual FundsMiscellaneous Acts as Open-End Investment Fund/Unit Trust | Miscellaneous |
The Association of the British Pharmaceutical Industry
The Association of the British Pharmaceutical Industry Miscellaneous Commercial ServicesCommercial Services Operates pharmaceutical companies associations | Commercial Services |
argenx SE
 argenx SE BiotechnologyHealth Technology Develops therapies and medicines for the treatment of autoimmune diseases | Health Technology |
Harvard Medical School
Harvard Medical School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Advanced Accelerator Applications SA
 Advanced Accelerator Applications SA Pharmaceuticals: MajorHealth Technology Develops and produces nuclear medicine and radioligand therapies | Health Technology |
Moelis & Co.
 Moelis & Co. Investment Banks/BrokersFinance Provides financial advisory, capital raising and asset management services | Finance |
Highgate LLC
Highgate LLC Real Estate DevelopmentFinance Operates nonresidential buildings | Finance |
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