![Rosemary Mazanet](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>)
Rosemary Mazanet
Director/Board Member at
ONCTERNAL THERAPEUTICS, INC.
Net worth: 63 304 $ as of 31/03/2026
Profile
Rosemary Mazanet founded Apelles Investment Management LP. She holds the position of President of Rosemary Mazanet LLC, President of R Mazanet LLC and Chief Scientific Officer for Columbia Care, Inc. Dr. Mazanet is also on the board of Oncternal Therapeutics, Inc. In her past career Dr. Mazanet occupied the position of Chief Executive Officer of Breakthrough Therapeutics LLC, Senior Director-Clinical Research at Amgen, Inc., Head of Research at Argenis Capital Advisors LLC, Partner at Apelles Investment Management LP, Venture Partner at Colt Ventures Ltd., Chief Medical Officer & Executive Vice President at Galena Biopharma, Inc. and Chief Scientific Officer & General Partner at Oracle Partners LP. Dr. Mazanet received an undergraduate degree from the University of Virginia and a doctorate from Perelman School of Medicine.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 08/08/2025 | 2,524,087 ( 0.47% ) | 63 304 $ | 31/03/2026 |
Rosemary Mazanet active positions
| Companies | Position | Start |
|---|---|---|
| THE CANNABIST COMPANY HOLDINGS INC. | Director/Board Member | 07/09/2023 |
| ONCTERNAL THERAPEUTICS, INC. | Director/Board Member | 27/01/2021 |
Rosemary Mazanet LLC | President | - |
Angiochem, Inc.
 Angiochem, Inc. Pharmaceuticals: MajorHealth Technology Develops drugs for brain diseases | Director/Board Member | - |
University of Pennsylvania Medical Center
 University of Pennsylvania Medical Center Other Consumer ServicesConsumer Services Functions as a College/University | Director/Board Member | - |
Oncolyze, Inc.
 Oncolyze, Inc. BiotechnologyHealth Technology Operates as a pre-clinical stage biopharmaceutical company that develops therapeutics to treat cancer | Director/Board Member | - |
R Mazanet LLC | President | 01/05/2004 |
The University of Pennsylvania Health System
 The University of Pennsylvania Health System Miscellaneous Commercial ServicesCommercial Services Operates as a medical school and provides medical services | Director/Board Member | 01/07/2002 |
Former positions of Rosemary Mazanet
| Companies | Position | End |
|---|---|---|
| KAIROS PHARMA, LTD. | Director/Board Member | 10/12/2024 |
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Training of Rosemary Mazanet
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
67
1st degree connections
27
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 27 |
|---|---|
Amgen, Inc.
 Amgen, Inc. BiotechnologyHealth Technology Discovers, develops, manufactures and delivers human therapeutics | Health Technology |
Abeona Therapeutics, Inc.
 Abeona Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Develops and commercializes cell and gene therapies for life-threatening rare genetic diseases | Health Technology |
Aksys Ltd.
 Aksys Ltd. Medical SpecialtiesHealth Technology Manufactures automated personal hemodialysis systems | Health Technology |
GTx, Inc.
 GTx, Inc. Pharmaceuticals: MajorHealth Technology Engages in the discovery, development and commercialization of small molecules for the treatment of cancer | Health Technology |
Acelerate, Inc.
 Acelerate, Inc. BiotechnologyHealth Technology Provides systems cell biology solutions | Health Technology |
Diabetes America, Inc.
 Diabetes America, Inc. Medical/Nursing ServicesHealth Services Owns and operates health care centers | Health Services |
Actinium Pharmaceuticals, Inc. /Old/
 Actinium Pharmaceuticals, Inc. /Old/ Miscellaneous Commercial ServicesCommercial Services Develops and commercializes alpha particle immunotherapeutics | Commercial Services |
Amorcyte, Inc.
 Amorcyte, Inc. Miscellaneous Commercial ServicesCommercial Services Provides cell therapy product development services | Commercial Services |
Cactus Ventures, Inc.
 Cactus Ventures, Inc. Financial ConglomeratesFinance Operates as a blank check company | Finance |
Galena Biopharma, Inc.
 Galena Biopharma, Inc. Pharmaceuticals: MajorHealth Technology Engages in pharmaceutical products through biopharmaceutical research and development | Health Technology |
Argenis Capital Advisors LLC
 Argenis Capital Advisors LLC Investment ManagersFinance Profile Unavailable. | Finance |
University of Virginia
 University of Virginia Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Oracle Partners LP | |
The University of Pennsylvania Health System
The University of Pennsylvania Health System Miscellaneous Commercial ServicesCommercial Services Operates as a medical school and provides medical services | Commercial Services |
Angiochem, Inc.
Angiochem, Inc. Pharmaceuticals: MajorHealth Technology Develops drugs for brain diseases | Health Technology |
Breakthrough Therapeutics LLC | |
Colt Ventures Ltd.
 Colt Ventures Ltd. Investment ManagersFinance Colt Ventures invests in public and private companies located in the United States. The firm focuses on a broad range of sectors and industries. It provides financing for early stage capital requirements with a minimum investment size of USD 15 million. | Finance |
Apelles Investment Management LP
 Apelles Investment Management LP Investment ManagersFinance Profile Unavailabl | Finance |
Harvard Medical School
 Harvard Medical School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Rosemary Mazanet LLC | |
Perelman School of Medicine
 Perelman School of Medicine Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Pennsylvania Medical Center
University of Pennsylvania Medical Center Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
The Cannabist Company Holdings, Inc.
 The Cannabist Company Holdings, Inc. Pharmaceuticals: OtherHealth Technology Engages in the production and sale of cannabis-based medicinal products | Health Technology |
Oncternal Therapeutics, Inc.
 Oncternal Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Operates as an oncology company that manufactures pharmaceutical products | Health Technology |
R Mazanet LLC | |
Oncolyze, Inc.
Oncolyze, Inc. BiotechnologyHealth Technology Operates as a pre-clinical stage biopharmaceutical company that develops therapeutics to treat cancer | Health Technology |
Kairos Pharma Ltd.
 Kairos Pharma Ltd. Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage biopharmaceutical company | Health Technology |
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