![Eric Shaff](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>)
Eric Shaff
Director/Board Member at
SERES THERAPEUTICS, INC.
Net worth: 88 133 $ as of 31/05/2026
Profile
Eric D.
Shaff is President, Chief Executive Officer & Director at PsiThera, Inc. since 2025.
Mr. Shaff is Director at Seres Therapeutics, Inc. since 2014.
Former roles include Independent Director at Sigilon Therapeutics, Inc. from 2017 to 2023, Principal at Pfizer Inc., Global Head-Rare Genetic Disease Finance at Genzyme Corp.
from 2004 to 2011, Vice President-Corporate Finance at Momenta Pharmaceuticals, Inc. from 2012 to 2014, and Senior Analyst at Broadview International LLC.
Education includes undergraduate studies at the University of Pennsylvania and an MBA from Johnson Graduate School of Management.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 18/05/2026 | 12,040 ( 0.12% ) | 88 133 $ | 31/05/2026 |
Eric Shaff active positions
| Companies | Position | Start |
|---|---|---|
| SERES THERAPEUTICS, INC. | Director/Board Member | 15/01/2019 |
Former positions of Eric Shaff
| Companies | Position | End |
|---|---|---|
| SIGILON THERAPEUTICS, INC. | Director/Board Member | 11/08/2023 |
| MOMENTA PHARMACEUTICALS, INC. | Corporate Officer/Principal | 01/11/2014 |
Genzyme Corp.
 Genzyme Corp. Pharmaceuticals: MajorHealth Technology Develops and manufactures therapies for rare diseases, multiple sclerosis, immunology & oncology | Corporate Officer/Principal | 01/12/2011 |
| PFIZER INC. | Corporate Officer/Principal | - |
Broadview International LLC
 Broadview International LLC Investment Banks/BrokersFinance Provides brokerage services | Corporate Officer/Principal | - |
Training of Eric Shaff
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
66
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
Pfizer Inc.
 Pfizer Inc. Pharmaceuticals: MajorHealth Technology Engages in discovery, development, manufacturing, marketing, sale and distribution of biopharmaceutical products & ingredients | Health Technology |
Genzyme Corp.
Genzyme Corp. Pharmaceuticals: MajorHealth Technology Develops and manufactures therapies for rare diseases, multiple sclerosis, immunology & oncology | Health Technology |
Momenta Pharmaceuticals, Inc.
 Momenta Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Operates as a biotechnology company that discovers and develops novel biologic therapies for the treatment of rare immune-mediated diseases | Health Technology |
University of Pennsylvania
 University of Pennsylvania Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Broadview International LLC
Broadview International LLC Investment Banks/BrokersFinance Provides brokerage services | Finance |
Johnson Graduate School of Management
 Johnson Graduate School of Management Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Seres Therapeutics, Inc.
 Seres Therapeutics, Inc. BiotechnologyHealth Technology Develops novel treatments for diseases related to the human microbiome | Health Technology |
Sigilon Therapeutics, Inc.
 Sigilon Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company that develops therapeutic treatments for chronic diseases | Health Technology |
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