![Ja-Yeop 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>)
Net worth: 147 M $ as of 2026-05-30
Ja-Yeop Koo served as the Chief Executive Officer & Director of GS Engineering & Construction Corp.
He was also the Chairman & Co-Chief Executive Officer of LS Electric Co., Ltd. from 2011 to 2013.
He later became the Chairman & Chief Executive Officer of LS Cable & System Ltd. and the Non-Executive Director & Chairman-Cable Business of GAON CABLE Co., Ltd. He also served as a Director of LS Corp.
Mr. Koo graduated from Korea University with a graduate degree and from Myongji University with an undergraduate degree.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
LS CORP. 1.51% | 2026-03-05 | 471,200 ( 1.51% ) | 139 M $ | 2026-05-30 |
Yesco Holdings Co., Ltd.
 Yesco Holdings Co., Ltd. Gas DistributorsUtilities Operates as a holding company whose subsidiaries supplies city natural gas and manufactures precast concrete products & provides business support and management consulting services 2.69% | 2026-06-01 | 733,130 ( 2.69% ) | 7 M $ | 2026-05-30 |
| Companies | Position | End |
|---|---|---|
| LS CORP. | Director/Board Member | 2018-03-27 |
| LS ELECTRIC CO., LTD. | Chief Executive Officer | 2013-03-21 |
LS Cable & System Ltd.
 LS Cable & System Ltd. Electrical ProductsProducer Manufacturing Manufactures insulated wires, cables, power grids and communication networks | Chief Executive Officer | - |
| GS ENGINEERING & CONSTRUCTION CORPORATION | President | - |
| GAON CABLE CO., LTD. | Chief Executive Officer | - |
Active
Inactive
Listed companies
Private companies
| Private companies | 7 |
|---|---|
GS Engineering & Construction Corp.
 GS Engineering & Construction Corp. HomebuildingConsumer Durables Engages in construction and civil engineering services | Consumer Durables |
LS Electric Co., Ltd.
 LS Electric Co., Ltd. Electrical ProductsProducer Manufacturing Manufactures equipment for electronic power. | Producer Manufacturing |
GAON CABLE Co., Ltd.
 GAON CABLE Co., Ltd. Electrical ProductsProducer Manufacturing Manufactures insulated wire and cable | Producer Manufacturing |
LS Corp.
 LS Corp. Electrical ProductsProducer Manufacturing Operates as a holding company which manufactures industrial electric, electronic and other materials | Producer Manufacturing |
Korea University
 Korea University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
LS Cable & System Ltd.
LS Cable & System Ltd. Electrical ProductsProducer Manufacturing Manufactures insulated wires, cables, power grids and communication networks | Producer Manufacturing |
Myongji University
 Myongji University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
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