![Ellie Im](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>)
Ellie Im
No open positions remaining
Net worth: 366 345 $ as of 2026-08-30
Profile
Ellie Im currently works at Crescent Biopharma, Inc., as Chief Medical Officer from 2025 and American Society of Clinical Oncology, Inc., as Member.
Dr. Im also formerly worked at Merck & Co., Inc., as Medical Director, Tesaro, Inc., as Senior Director-Medical, Mersana Therapeutics, Inc., as Senior VP-Clinical Development & Operation, and Centessa Pharmaceuticals Plc, as Senior VP-Oncology Clinical Development from 2023 to 2025.
Dr. Im received her doctorate degree from Catholic University of Korea School of Medicine.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
0.06% | 2026-06-21 | 22,069 ( 0.06% ) | 366 345 $ | 2026-08-30 |
Ellie Im active positions
| Companies | Position | Start |
|---|---|---|
American Society of Clinical Oncology, Inc.
 American Society of Clinical Oncology, Inc. Medical/Nursing ServicesHealth Services Provides cancer treatment services | Corporate Officer/Principal | - |
Former positions of Ellie Im
| Companies | Position | End |
|---|---|---|
| CENTESSA PHARMACEUTICALS PLC | Chief Tech/Sci/R&D Officer | 2025-03-31 |
| MERCK & CO., INC. | Chief Tech/Sci/R&D Officer | - |
| TESARO INC | Chief Tech/Sci/R&D Officer | - |
| MERSANA THERAPEUTICS | Chief Tech/Sci/R&D Officer | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
87
1st degree connections
5
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 5 |
|---|---|
Merck & Co., Inc.
 Merck & Co., Inc. Pharmaceuticals: MajorHealth Technology Manufactures human and animal health pharmaceutical products & vaccines | Health Technology |
Mersana Therapeutics, Inc.
 Mersana Therapeutics, Inc. BiotechnologyHealth Technology Develops and manufactures antibody drug conjugates to improve patient outcomes in multiple oncology indications | Health Technology |
Tesaro, Inc.
 Tesaro, Inc. Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company that develops drugs for cancer patients | Health Technology |
American Society of Clinical Oncology, Inc.
American Society of Clinical Oncology, Inc. Medical/Nursing ServicesHealth Services Provides cancer treatment services | Health Services |
Centessa Pharmaceuticals Plc
 Centessa Pharmaceuticals Plc Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage pharmaceutical company that researches and develops medicines for neurological, neurodegenerative and neuropsychiatric disorders | Health Technology |
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