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Boo-Sup Lee
Chief Executive Officer at
Taiwan Dongjin Semichem Co. Ltd.
Net worth: 629 M $ as of 30/06/2026
Profile
Boo-Sup Lee is currently Chief Executive Officer & Director at Taiwan Dongjin Semichem Co. Ltd. and Chief Executive Officer & Director at Sinam Refined Fuel Co. Ltd. Former positions include Chairman & Co-Chief Executive Officer at Dongjin Semichem Co., Ltd. from 2010 to 2025, Chief Executive Officer & Director at Dongjin Display Materials Co., Ltd., Chairman at Korean Engineers Club, Non-Executive Director at APACT Co., Ltd., and Member of The Korean Society of Industrial & Engineering Chemistry from 1997 to 2010.
Education includes graduate studies at Seoul National University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 01/06/2026 | 16,706,986 ( 32.78% ) | 629 M $ | 30/06/2026 |
Boo-Sup Lee active positions
| Companies | Position | Start |
|---|---|---|
Taiwan Dongjin Semichem Co. Ltd. | Chief Executive Officer | 23/08/2011 |
Sinam Refined Fuel Co. Ltd.
 Sinam Refined Fuel Co. Ltd. Oil Refining/MarketingEnergy Minerals Engages in oil refining | Chief Executive Officer | 23/08/2011 |
Former positions of Boo-Sup Lee
| Companies | Position | End |
|---|---|---|
| DONGJIN SEMICHEM CO., LTD. | Chief Executive Officer | 25/02/2025 |
Dongjin Display Materials Co., Ltd. | Chief Executive Officer | 10/09/2015 |
| APACT CO., LTD. | Director/Board Member | - |
Korean Engineers Club | Chairman | - |
The Korean Society of Industrial & Engineering Chemistry | Chairman | - |
Training of Boo-Sup Lee
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
4
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
Dongjin Semichem Co., Ltd.
 Dongjin Semichem Co., Ltd. Electronic Production EquipmentElectronic Technology Manufactures electronic materials | Electronic Technology |
Seoul National University
 Seoul National University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
APACT Co., Ltd.
 APACT Co., Ltd. Miscellaneous Commercial ServicesCommercial Services Engages in conducting test and engineering service business related to semiconductor manufacturing | Commercial Services |
Dongjin Display Materials Co., Ltd. | |
The Korean Society of Industrial & Engineering Chemistry | |
Korean Engineers Club | |
Taiwan Dongjin Semichem Co. Ltd. | |
Sinam Refined Fuel Co. Ltd.
Sinam Refined Fuel Co. Ltd. Oil Refining/MarketingEnergy Minerals Engages in oil refining | Energy Minerals |
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