![Ja-Dong Koo](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>)
Ja-Dong Koo
Chief Executive Officer at
KSIGN CO.,LTD.
Net worth: 2 M $ as of 2026-05-30
Profile
Ja-Dong Koo currently works at KSIGN Co., Ltd., as Co-Chief Executive Officer & Director.
Dr. Koo also formerly worked at KSign Co., Ltd., as Vice President.
Dr. Koo received his doctorate degree from Korea University and undergraduate degree and graduate degree from Ajou University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
KSIGN CO., LTD. 4.39% | 2026-03-05 | 310,341 ( 4.39% ) | 2 M $ | 2026-05-30 |
Ja-Dong Koo active positions
| Companies | Position | Start |
|---|---|---|
| KSIGN CO.,LTD. | Chief Executive Officer | - |
Former positions of Ja-Dong Koo
| Companies | Position | End |
|---|---|---|
KSign Co., Ltd. /Old/
 KSign Co., Ltd. /Old/ Packaged SoftwareTechnology Services Develops security solution software | Corporate Officer/Principal | - |
Training of Ja-Dong Koo
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
5
1st degree connections
4
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 4 |
|---|---|
KSign Co., Ltd. /Old/
KSign Co., Ltd. /Old/ Packaged SoftwareTechnology Services Develops security solution software | Technology Services |
Korea University
 Korea University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Ajou University
 Ajou University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
KSIGN Co., Ltd.
 KSIGN Co., Ltd. Packaged SoftwareTechnology Services Develops security software | Technology Services |
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