![Stephen Berenson](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>)
Stephen Berenson
Director/Board Member at
SERES THERAPEUTICS, INC.
Net worth: 1 310 $ as of 30/05/2026
Profile
Stephen A. Berenson is currently Chairman at Cellarity Inc. since 2021.
He serves as Director at Seres Therapeutics, Inc. since 2019, at Repertoire Immune Medicines, Inc. since 2021, and at Sail Biomedicines Inc as President & Director since 2024.
He is an Advisor Partner at Flagship Pioneering, Inc. since 2017 and a Trustee at The Mahaiwe Performing Arts Center.
Formerly, Mr. Berenson was Vice Chairman-Investment Banking at 09143628 Ltd. from 2005 to 2017.
He was Director at Inari, Inc. in 2024.
He was Director at ModernaTX, Inc. and CIBO Technologies, Inc. He was Independent Non-Executive Director at Moderna, Inc. from 2017 to 2024.
Mr. Berenson completed undergraduate studies at the Massachusetts Institute of Technology in 1982.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 12/04/2026 | 179 ( 0% ) | 1 310 $ | 30/05/2026 |
Stephen Berenson active positions
| Companies | Position | Start |
|---|---|---|
| SERES THERAPEUTICS, INC. | Director/Board Member | 01/03/2026 |
Flagship Pioneering, Inc.
 Flagship Pioneering, Inc. Investment ManagersFinance Flagship Pioneering invests in companies located across the globe. The firm targets companies operating in the fields of therapeutics, life science tools & diagnostics, bioenergy, and cleantech sectors. It provides financing for seed, early and later-stage capital requirements. The firm makes co-investments and also acts as a lead investor. | Private Equity Investor | 31/05/2017 |
The Mahaiwe Performing Arts Center
 The Mahaiwe Performing Arts Center The Mahaiwe Performing Arts Center is a historic proscenium theater that presents a diverse range of live performances, films, and cultural events throughout the year. The private company is based in Great Barrington. The venue combines classic architectural features with modern stage technology, supporting programming such as music, dance, theater, opera, comedy, family shows, cabaret, lectures, and special events. The Indigo Room, adjacent to the main theater, serves as a flexible space for smaller productions. Operating as a non-profit organization, the center emphasizes inclusion, diversity, equity, and access, offering affordable ticket pricing and discounts for youth, members, and eligible community cardholders. The Mahaiwe supports regional cultural initiatives, provides accessible services, and prioritizes patron health and safety. | Director/Board Member | - |
Cellarity Inc.
 Cellarity Inc. Packaged SoftwareTechnology Services Develops AI-driven platform for drug delivery | Chairman | 30/06/2021 |
Repertoire Immune Medicines, Inc.
 Repertoire Immune Medicines, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage biotechnology company that engages in immune medicines to prevent, treat and cure cancer | Director/Board Member | 30/04/2021 |
Sail Biomedicines
 Sail Biomedicines Pharmaceuticals: MajorHealth Technology Engages in design and deployment of programmable medicines | President | - |
Former positions of Stephen Berenson
| Companies | Position | End |
|---|---|---|
| MODERNA, INC. | Director/Board Member | 04/08/2024 |
Inari, Inc.
 Inari, Inc. Computer CommunicationsElectronic Technology Develops powerline networking products used for high-speed data transmission | Director/Board Member | 05/05/2024 |
09143628 Ltd.
 09143628 Ltd. Real Estate DevelopmentFinance Provides real estate services | Corporate Officer/Principal | 31/03/2017 |
| ░░░░ ░░░░░░░░░░░░░ ░░░░ | ░░░░░░░░░░░░░░ ░░░░░░ | - |
| ░░░░░░░░░░ ░░░░ | ░░░░░░░░░░░░░░ ░░░░░░ | - |
Training of Stephen Berenson
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
68
1st degree connections
12
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 12 |
|---|---|
Inari, Inc.
Inari, Inc. Computer CommunicationsElectronic Technology Develops powerline networking products used for high-speed data transmission | Electronic Technology |
Flagship Pioneering, Inc.
Flagship Pioneering, Inc. Investment ManagersFinance Flagship Pioneering invests in companies located across the globe. The firm targets companies operating in the fields of therapeutics, life science tools & diagnostics, bioenergy, and cleantech sectors. It provides financing for seed, early and later-stage capital requirements. The firm makes co-investments and also acts as a lead investor. | Finance |
Massachusetts Institute of Technology
 Massachusetts Institute of Technology Finance/Rental/LeasingFinance Functions as a College/University | Finance |
ModernaTX, Inc.
 ModernaTX, Inc. BiotechnologyHealth Technology Develops messenger RNA therapeutics | Health Technology |
Seres Therapeutics, Inc.
 Seres Therapeutics, Inc. BiotechnologyHealth Technology Develops novel treatments for diseases related to the human microbiome | Health Technology |
CiBO Technologies, Inc.
 CiBO Technologies, Inc. Packaged SoftwareTechnology Services Develops technology to improve efficiency of farming | Technology Services |
Moderna, Inc.
 Moderna, Inc. BiotechnologyHealth Technology Researches, develops, manufactures and commercializes mRNA-based respiratory & other virus vaccines, oncology and rare disease therapeutics | Health Technology |
The Mahaiwe Performing Arts Center
The Mahaiwe Performing Arts Center The Mahaiwe Performing Arts Center is a historic proscenium theater that presents a diverse range of live performances, films, and cultural events throughout the year. The private company is based in Great Barrington. The venue combines classic architectural features with modern stage technology, supporting programming such as music, dance, theater, opera, comedy, family shows, cabaret, lectures, and special events. The Indigo Room, adjacent to the main theater, serves as a flexible space for smaller productions. Operating as a non-profit organization, the center emphasizes inclusion, diversity, equity, and access, offering affordable ticket pricing and discounts for youth, members, and eligible community cardholders. The Mahaiwe supports regional cultural initiatives, provides accessible services, and prioritizes patron health and safety. | |
Repertoire Immune Medicines, Inc.
Repertoire Immune Medicines, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage biotechnology company that engages in immune medicines to prevent, treat and cure cancer | Health Technology |
Cellarity Inc.
Cellarity Inc. Packaged SoftwareTechnology Services Develops AI-driven platform for drug delivery | Technology Services |
09143628 Ltd.
09143628 Ltd. Real Estate DevelopmentFinance Provides real estate services | Finance |
Sail Biomedicines
Sail Biomedicines Pharmaceuticals: MajorHealth Technology Engages in design and deployment of programmable medicines | Health Technology |
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