![Jae-Seung Yoon](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>)
Jae-Seung Yoon
Director/Board Member at
Healience Co., Ltd.
Net worth: 92 M $ as of 2026-08-30
Profile
Jae-Seung Yoon is currently Director at Healience Co., Ltd. Former positions include Chief Executive Officer at Daewoong Co., Ltd. from 1995 to 2010, Chairman & Co-Chief Executive Officer at Daewoong Pharmaceutical Co., Ltd., Non-Executive Director at SK Telecom Co., Ltd., Independent Director at NAVER Corp.
from 2008 to 2013, Director at Dongnam Chemical Co., Ltd., Director at Daewoong Bio, Inc., Director at Ezmedicom Co. Ltd., Director at Bioalpha, Inc., and Non-Executive Director at INSUNG INFORMATION Co., Ltd. from 1995 to 2020.
Education includes graduate studies at Seoul National University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
DAEWOONG CO., LTD. 11.91% | 2026-03-25 | 6,924,201 ( 11.91% ) | 91 M $ | 2026-08-30 |
| 2026-06-29 | 9,708 ( 0.08% ) | 900 859 $ | 2026-08-30 |
Jae-Seung Yoon active positions
| Companies | Position | Start |
|---|---|---|
Healience Co., Ltd.
 Healience Co., Ltd. Hotels/Resorts/Cruise linesConsumer Services Provides tourist accommodation | Director/Board Member | 2011-07-04 |
Former positions of Jae-Seung Yoon
| Companies | Position | End |
|---|---|---|
| INSUNG INFORMATION CO., LTD | Director/Board Member | 2020-09-30 |
| DAEWOONG PHARMACEUTICAL CO., LTD | Chief Executive Officer | 2018-08-26 |
| NAVER CORPORATION | Director/Board Member | - |
Daewoong Bio, Inc.
 Daewoong Bio, Inc. Miscellaneous Commercial ServicesCommercial Services Engages in research, development and manufacturing of pharmaceutical raw materials & intermediate products | Director/Board Member | - |
| DONGNAM CHEMICAL CO., LTD. | Director/Board Member | - |
Training of Jae-Seung Yoon
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
13
1st degree connections
11
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 11 |
|---|---|
SK Telecom Co., Ltd.
 SK Telecom Co., Ltd. Wireless TelecommunicationsCommunications Provides wireless communication services | Communications |
Daewoong Co., Ltd.
 Daewoong Co., Ltd. Pharmaceuticals: MajorHealth Technology Manufactures pharmaceuticals | Health Technology |
INSUNG INFORMATION Co., Ltd.
 INSUNG INFORMATION Co., Ltd. Information Technology ServicesTechnology Services Provides systems, solutions and services for information technology infrastructures | Technology Services |
Daewoong Pharmaceutical Co., Ltd.
 Daewoong Pharmaceutical Co., Ltd. Pharmaceuticals: MajorHealth Technology Manufactures pharmaceutical products | Health Technology |
NAVER Corp.
 NAVER Corp. Packaged SoftwareTechnology Services Develops and operates advertising portals for commerce, fintech & cloud sectors | Technology Services |
Dongnam Chemical Co., Ltd.
 Dongnam Chemical Co., Ltd. Household/Personal CareConsumer Non-Durables Manufactures and sells surfactants products | Consumer Non-Durables |
Daewoong Bio, Inc.
Daewoong Bio, Inc. Miscellaneous Commercial ServicesCommercial Services Engages in research, development and manufacturing of pharmaceutical raw materials & intermediate products | Commercial Services |
Seoul National University
 Seoul National University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Ezmedicom Co. Ltd.
 Ezmedicom Co. Ltd. Miscellaneous Commercial ServicesCommercial Services Provides healthcare supply chain management solutions | Commercial Services |
Healience Co., Ltd.
Healience Co., Ltd. Hotels/Resorts/Cruise linesConsumer Services Provides tourist accommodation | Consumer Services |
Bioalpha, Inc. |
- Stock Market
- Insiders
- Jae-Seung Yoon
