![Michael Grey](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>)
Michael Grey
Founder at
MIRUM PHARMACEUTICALS, INC.
Net worth: 30 M $ as of 31/07/2026
Profile
Michael G.
Grey founded Reneo Pharmaceuticals, Inc. in 2014, where he worked as Executive Chairman from 2017 to 2024 and Mirum Pharmaceuticals, Inc. in 2018, where he is working as Non-Executive Chairman from 2020.
Mr. Grey also currently works at Sorriso Pharmaceuticals, Inc., as Chairman from 2017, Plexium, Inc., as Executive Chairman from 2021, Spruce Biosciences, Inc., as Executive Chairman from 2022, and various other companies.
Mr. Grey also formerly worked at SGX Pharmaceuticals, Inc., as President & Chief Executive Officer from 2005 to 2008, Auspex Pharmaceuticals, Inc., as President & Chief Executive Officer in 2009, Lumena Pharmaceuticals, Inc., as President & Chief Executive Officer from 2011 to 2014, and various other companies.
Mr. Grey received his undergraduate degree from The University of Nottingham.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 15/06/2026 | 280,160 ( 0.46% ) | 30 M $ | 31/07/2026 | |
0.16% | 04/06/2026 | 62,884 ( 0.16% ) | 240 217 $ | 31/07/2026 |
| 21/05/2026 | 0 ( -.--% ) | - $ | 31/07/2026 |
Michael Grey active positions
| Companies | Position | Start |
|---|---|---|
| MIRUM PHARMACEUTICALS, INC. | Founder | 07/05/2018 |
| SPRUCE BIOSCIENCES, INC. | Chairman | 01/04/2017 |
Biothera, Inc.
 Biothera, Inc. Miscellaneous Commercial ServicesCommercial Services Develops natural gluco polysaccharide that engages and directs natural innate immune systems | Director/Board Member | - |
Pappas Capital LLC
 Pappas Capital LLC Investment ManagersFinance Pappas Ventures invests in companies located in the across the globe and primarily in United States, Canada and Asia. The firm focuses on next-generation life science, agriculture, and technology. It participates in seed and early-stage transactions. | Private Equity Investor | 01/01/2010 |
Plexium, Inc.
 Plexium, Inc. BiotechnologyHealth Technology Develops drug discovery and targeted protein degradation therapeutics technology platform | Chairman | 01/08/2020 |
Sorriso Pharmaceuticals, Inc.
 Sorriso Pharmaceuticals, Inc. BiotechnologyHealth Technology Operates as a biotechnology company advancing disease-modifying antibodies for the treatment of inflammatory disease | Chairman | 01/12/2017 |
Theolytics Ltd.
 Theolytics Ltd. BiotechnologyHealth Technology Engages in research and experimental development on biotechnology | Chairman | 30/11/2023 |
Former positions of Michael Grey
| Companies | Position | End |
|---|---|---|
| ONKURE THERAPEUTICS, INC. | Chief Executive Officer | 01/12/2017 |
| HORIZON THERAPEUTICS PUBLIC LIMITED COMPANY | Director/Board Member | 06/10/2023 |
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Training of Michael Grey
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
73
1st degree connections
33
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 33 |
|---|---|
Trega Biosciences, Inc.
 Trega Biosciences, Inc. BiotechnologyHealth Technology Provides identification and early stage development of novel and small moelcule drug therapies | Health Technology |
BioMarin Pharmaceutical, Inc.
 BioMarin Pharmaceutical, Inc. BiotechnologyHealth Technology Discovers, develops and commercializes innovative pharmaceuticals for serious diseases & medical conditions | Health Technology |
Epimmune, Inc.
 Epimmune, Inc. Pharmaceuticals: MajorHealth Technology Develops vaccines to treat and prevent infectious diseases and cancer | Health Technology |
Achillion Pharmaceuticals, Inc.
 Achillion Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Discovers, develops and commercializes treatments for infectious diseases | Health Technology |
Biothera, Inc.
Biothera, Inc. Miscellaneous Commercial ServicesCommercial Services Develops natural gluco polysaccharide that engages and directs natural innate immune systems | Commercial Services |
Lumena Pharmaceuticals, Inc.
 Lumena Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops oral therapeutics for rare liver diseases | Health Technology |
Horizon Therapeutics Ltd. (Ireland)
 Horizon Therapeutics Ltd. (Ireland) Pharmaceuticals: MajorHealth Technology Discovers, develops and manufactures pharmaceuticals for autoimmune & inflammatory diseases | Health Technology |
SGX Pharmaceuticals, Inc.
 SGX Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Researches and develops drugs and other pharmaceutical products | Health Technology |
Pappas Capital LLC
Pappas Capital LLC Investment ManagersFinance Pappas Ventures invests in companies located in the across the globe and primarily in United States, Canada and Asia. The firm focuses on next-generation life science, agriculture, and technology. It participates in seed and early-stage transactions. | Finance |
Mirati Therapeutics, Inc.
 Mirati Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage biopharmaceutical company that develops cancer therapies | Health Technology |
Selventa, Inc.
 Selventa, Inc. Miscellaneous Commercial ServicesCommercial Services Develops new approaches for the understanding and treatment of diseases | Commercial Services |
The University of Nottingham
 The University of Nottingham Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
IDM Pharma, Inc.
 IDM Pharma, Inc. Pharmaceuticals: MajorHealth Technology Develops cancer treatment products | Health Technology |
San Diego Venture Group
 San Diego Venture Group Financial ConglomeratesFinance Provides funding for start up companies | Finance |
Ansan Pharmaceuticals, Inc.
 Ansan Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Manufactures pharmaceutical products | Health Technology |
Glaxo, Inc. | |
Glaxo Holdings Plc
 Glaxo Holdings Plc Financial ConglomeratesFinance Provides investment services | Finance |
Auspex Pharmaceuticals, Inc.
 Auspex Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company | Health Technology |
Biochem Therapeutic, Inc. | |
Amplyx Pharmaceuticals, Inc.
 Amplyx Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops and distributes medicines | Health Technology |
Horizon Pharma, Inc.
 Horizon Pharma, Inc. Pharmaceuticals: MajorHealth Technology Discovers and develops medicines for the treatment of chronic inflammatory diseases | Health Technology |
Ziarco Pharma Ltd.
 Ziarco Pharma Ltd. BiotechnologyHealth Technology Provides therapeutics targeting inflammatory and allergic diseases | Health Technology |
Ziarco Group Ltd.
 Ziarco Group Ltd. Pharmaceuticals: MajorHealth Technology Develops therapeutics targeting skin inflammatory and allergic diseases | Health Technology |
Reneo Pharmaceuticals, Inc.
 Reneo Pharmaceuticals, Inc. BiotechnologyHealth Technology Operates as a clinical-stage pharmaceutical company focused on the development of therapies for patients with genetic mitochondrial diseases | Health Technology |
Balance Therapeutics, Inc.
 Balance Therapeutics, Inc. BiotechnologyHealth Technology Develops therapeutics for neurological disabilities | Health Technology |
Biothera Pharmaceuticals, Inc. (Delaware)
 Biothera Pharmaceuticals, Inc. (Delaware) Medical/Nursing ServicesHealth Services Develops cancer immunotherapy | Health Services |
Ansan, Inc.
 Ansan, Inc. MiscellaneousMiscellaneous Operates as a non-classified establishment | Miscellaneous |
Spruce Biosciences, Inc.
 Spruce Biosciences, Inc. BiotechnologyHealth Technology Operates as a biopharmaceutical company focused on developing and commercializing novel therapies for neurological disorders | Health Technology |
Theolytics Ltd.
Theolytics Ltd. BiotechnologyHealth Technology Engages in research and experimental development on biotechnology | Health Technology |
Mirum Pharmaceuticals, Inc.
 Mirum Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Operates as clinical-stage therapeutics company developing a novel approach for treating cholestasis liver diseases | Health Technology |
Plexium, Inc.
Plexium, Inc. BiotechnologyHealth Technology Develops drug discovery and targeted protein degradation therapeutics technology platform | Health Technology |
Curzion Pharmaceuticals, Inc.
 Curzion Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Operates as a pharmaceutical company | Health Technology |
Sorriso Pharmaceuticals, Inc.
Sorriso Pharmaceuticals, Inc. BiotechnologyHealth Technology Operates as a biotechnology company advancing disease-modifying antibodies for the treatment of inflammatory disease | Health Technology |
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