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Roger Hajjar
Director/Board Member at
LONGEVEROPAR
Net worth: 48 369 $ as of 31/07/2026
Profile
Dr. Roger J.
Hajjar, MD, is an Independent Director at Longeveron, Inc., a Director-Gene & Cell Therapy at Mass General Brigham, Inc., a President, Director & Chief Medical Officer at Medera, Inc., a Chief Executive Officer at Sardocor Corp., a Head-Research & Development at Ring Therapeutics, Inc. and a President, Chief Medical Officer & Director at Medera, Inc. /New/.
He is on the Board of Directors at Longeveron, Inc., Atamyo Therapeutics SAS, Medera, Inc. and Medera, Inc. /New/.
Dr. Hajjar was previously employed as a Director-Cardiovascular Research Center by Icahn School of Medicine at Mount Sinai and a Director-Cardiovascular Research by Celladon Corp.
He also served on the board at Cellectis SA. He received his undergraduate degree from The Johns Hopkins University and a doctorate degree from Harvard Medical School.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 19/08/2026 | 69,000 ( 0.23% ) | 48 369 $ | 31/07/2026 |
Roger Hajjar active positions
| Companies | Position | Start |
|---|---|---|
| LONGEVEROPAR | Director/Board Member | 02/07/2024 |
Atamyo Therapeutics SAS
 Atamyo Therapeutics SAS BiotechnologyHealth Technology Develops gene therapies for neuromuscular diseases | Director/Board Member | 24/07/2023 |
Mass General Brigham, Inc.
 Mass General Brigham, Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a non-profit organization that provides patient care, medical research and discovery & teaching services | Corporate Officer/Principal | 01/12/2022 |
Medera, Inc.
 Medera, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical stage biopharmaceutical company focused on eradicating cardiovascular diseases | Founder | 01/01/2014 |
Sardocor Corp.
 Sardocor Corp. Sardocor Corp. is a company based in Boston, MA. The company was founded in 2019. | Chief Executive Officer | - |
Ring Therapeutics, Inc.
 Ring Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Develops transforming commensal viruses therapies | Chief Tech/Sci/R&D Officer | - |
Former positions of Roger Hajjar
| Companies | Position | End |
|---|---|---|
Icahn School of Medicine at Mount Sinai
 Icahn School of Medicine at Mount Sinai Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | 01/01/2019 |
Celladon Corp.
 Celladon Corp. BiotechnologyHealth Technology Develops molecular therapies for cardiovascular diseases | Founder | - |
| CELLECTIS S.A. | Director/Board Member | - |
Training of Roger Hajjar
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
75
1st degree connections
11
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 11 |
|---|---|
Celladon Corp.
Celladon Corp. BiotechnologyHealth Technology Develops molecular therapies for cardiovascular diseases | Health Technology |
The Johns Hopkins University
 The Johns Hopkins University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Cellectis SA
 Cellectis SA Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage biopharmaceutical company that develops immunotherapies | Health Technology |
Mass General Brigham, Inc.
Mass General Brigham, Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a non-profit organization that provides patient care, medical research and discovery & teaching services | Commercial Services |
Icahn School of Medicine at Mount Sinai
Icahn School of Medicine at Mount Sinai Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Harvard Medical School
 Harvard Medical School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Longeveron, Inc.
 Longeveron, Inc. BiotechnologyHealth Technology Operates as a biotechnology company which develops cellular therapies for aging-related and life-threatening conditions | Health Technology |
Ring Therapeutics, Inc.
Ring Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Develops transforming commensal viruses therapies | Health Technology |
Atamyo Therapeutics SAS
Atamyo Therapeutics SAS BiotechnologyHealth Technology Develops gene therapies for neuromuscular diseases | Health Technology |
Medera, Inc.
Medera, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical stage biopharmaceutical company focused on eradicating cardiovascular diseases | Health Technology |
Sardocor Corp.
Sardocor Corp. Sardocor Corp. is a company based in Boston, MA. The company was founded in 2019. |
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