![Jung-Jin Seo](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>)
Jung-Jin Seo
Founder at
CELLTRION, INC.
Net worth: 10 397 M $ as of 2026-08-30
Profile
Currently, Jung-Jin Seo occupies the position of Chairman at Celltrion Healthcare Co., Ltd., Chairman for Celltrion, Inc., Chairman for Celltrion Pharm Inc. (a subsidiary of Celltrion, Inc.) and Chief Executive Officer at Celltrion Holdings Co., Ltd. Mr. Seo is also on the board of Korea National Opera.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
CELLTRION, INC. 32.39% | 2026-09-15 | 75,329,669 ( 32.39% ) | 10 397 M $ | 2026-08-30 |
Jung-Jin Seo active positions
| Companies | Position | Start |
|---|---|---|
| CELLTRION HEALTHCARE CO., LTD. | Chairman | - |
| CELLTRION, INC. | Founder | 1991-02-26 |
| CELLTRION PHARM, INC. | Chairman | 2025-03-27 |
Korea National Opera
 Korea National Opera Movies/EntertainmentConsumer Services Presents live entertainment productions | Director/Board Member | 2020-01-26 |
Former positions of Jung-Jin Seo
| Companies | Position | End |
|---|---|---|
Celltrion Holdings Co., Ltd.
 Celltrion Holdings Co., Ltd. Movies/EntertainmentConsumer Services Operates as a holding company whose subsidiaries produces broadcast programs and provides system integration services | Chief Executive Officer | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
58
1st degree connections
5
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 5 |
|---|---|
Celltrion Pharm Inc.
 Celltrion Pharm Inc. Pharmaceuticals: MajorHealth Technology Manufactures and distributes pharmaceutical products | Health Technology |
Celltrion Healthcare Co., Ltd.
 Celltrion Healthcare Co., Ltd. BiotechnologyHealth Technology Develops and sells monoclonal antibody biosimilars for the treatment of cancer | Health Technology |
Celltrion, Inc.
 Celltrion, Inc. BiotechnologyHealth Technology Develops biopharmaceutical products | Health Technology |
Celltrion Holdings Co., Ltd.
Celltrion Holdings Co., Ltd. Movies/EntertainmentConsumer Services Operates as a holding company whose subsidiaries produces broadcast programs and provides system integration services | Consumer Services |
Korea National Opera
Korea National Opera Movies/EntertainmentConsumer Services Presents live entertainment productions | Consumer Services |
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