![Ji-Wan Jeong](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>)
Ji-Wan Jeong
Chairman at
SOULBRAIN HOLDINGS CO., LTD.
Net worth: 416 M $ as of 2026-07-30
Profile
Ji-Wan Jeong currently works at MC Solution Co., Ltd., as Chief Executive Officer, Ltk Co. Ltd., as Chief Executive Officer, Soulbrain Holdings Co., Ltd., as Chairman, Up System Co. Ltd., as Director, Soulbrain SLD Co., Ltd., as Director, Soulbrain Sigma-Aldrich Co., Ltd., as Director, Soulbrain MI, Inc., as Director, and Nau IB Capital, as Non-Executive Director.
Mr. Jeong also formerly worked at J&K Industry Co., Ltd., as Co-Chief Executive Officer in 2009, Techno Trichem Co., Ltd., as Chief Executive Officer, Matec, Inc., as Chief Executive Officer, Soulbrain Memsys Co., Ltd., as Chairman & Co-Chief Executive Officer, Nau IB Capital Co. Ltd. (Venture Capital), as Chairman, Kosdaq Listed Cos.
Association, as Chairman, and Soulbrain Co., Ltd., as Chairman.
Mr. Jeong received his undergraduate degree from Sungkyunkwan University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-08-09 | 11,716,848 ( 57.14% ) | 255 M $ | 2026-07-30 | |
SOULBRAIN CO., LTD. 7.77% | 2026-08-03 | 604,232 ( 7.77% ) | 107 M $ | 2026-07-30 |
NAU IB CAPITAL 61.66% | 2026-03-30 | 58,538,000 ( 61.66% ) | 54 M $ | 2026-07-30 |
Ji-Wan Jeong active positions
| Companies | Position | Start |
|---|---|---|
| SOULBRAIN HOLDINGS CO., LTD. | Chairman | 2014-08-28 |
| NAU IB CAPITAL | Director/Board Member | - |
Up System Co. Ltd.
 Up System Co. Ltd. Chemicals: Major DiversifiedProcess Industries Manufactures other chemical products | Director/Board Member | - |
Soulbrain Sld Co. Ltd.
 Soulbrain Sld Co. Ltd. Electronic Production EquipmentElectronic Technology Manufactures electronic components | Director/Board Member | - |
MC Solution Co., Ltd.
 MC Solution Co., Ltd. Chemicals: SpecialtyProcess Industries Manufactures other basic organic chemicals | Chief Executive Officer | - |
Ltk Co. Ltd. | Chief Executive Officer | - |
Soulbrain Sigma-Aldrich Co., Ltd. | Director/Board Member | 2014-08-28 |
Soulbrain MI, Inc.
 Soulbrain MI, Inc. Electrical ProductsProducer Manufacturing Manufactures electrolyte portion of the lithium-ion battery market segment | Director/Board Member | - |
Former positions of Ji-Wan Jeong
| Companies | Position | End |
|---|---|---|
Soulbrain Memsys Co., Ltd.
 Soulbrain Memsys Co., Ltd. Industrial MachineryProducer Manufacturing Manufactures diodes, transistors and similar semiconductor devices | Chief Executive Officer | - |
| ░░░░░░░░░ ░░░░ ░░░░ | ░░░░░░░░ | - |
| ░░░░░░ ░░░░░░ ░░░░ ░░░░░░░░░░░ | ░░░░░░░░ | - |
| ░░░░░░ ░░░░ | ░░░░░ ░░░░░░░░░ ░░░░░░░ | - |
| ░░░░░░ ░░░░░░░ ░░░░ ░░░░ | ░░░░░ ░░░░░░░░░ ░░░░░░░ | - |
Training of Ji-Wan Jeong
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
35
1st degree connections
16
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 16 |
|---|---|
Soulbrain Holdings Co., Ltd.
 Soulbrain Holdings Co., Ltd. Chemicals: SpecialtyProcess Industries Manufactures chemicals and advanced materials for semiconductors | Process Industries |
J&K Industry Co., Ltd.
 J&K Industry Co., Ltd. Electronic Equipment/InstrumentsElectronic Technology Manufactures semiconductor and printed circuit board testing tools | Electronic Technology |
Sungkyunkwan University
 Sungkyunkwan University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Nau IB Capital Co. Ltd. (Venture Capital)
 Nau IB Capital Co. Ltd. (Venture Capital) Investment ManagersFinance Nau IB invest in companies located in South Korea. The firm targets companies operating across a broad range of sectors and industries. It participates in early stage capital requirements. | Finance |
Techno Trichem Co., Ltd. | |
Matec, Inc. | |
Up System Co. Ltd.
Up System Co. Ltd. Chemicals: Major DiversifiedProcess Industries Manufactures other chemical products | Process Industries |
Soulbrain Sld Co. Ltd.
Soulbrain Sld Co. Ltd. Electronic Production EquipmentElectronic Technology Manufactures electronic components | Electronic Technology |
MC Solution Co., Ltd.
MC Solution Co., Ltd. Chemicals: SpecialtyProcess Industries Manufactures other basic organic chemicals | Process Industries |
Ltk Co. Ltd. | |
Kosdaq Listed Cos. Association | |
Soulbrain Memsys Co., Ltd.
Soulbrain Memsys Co., Ltd. Industrial MachineryProducer Manufacturing Manufactures diodes, transistors and similar semiconductor devices | Producer Manufacturing |
Soulbrain Sigma-Aldrich Co., Ltd. | |
Soulbrain MI, Inc.
Soulbrain MI, Inc. Electrical ProductsProducer Manufacturing Manufactures electrolyte portion of the lithium-ion battery market segment | Producer Manufacturing |
Nau IB Capital
 Nau IB Capital Finance/Rental/LeasingFinance Operates as a credit finance company | Finance |
Soulbrain Co., Ltd.
 Soulbrain Co., Ltd. Chemicals: SpecialtyProcess Industries Manufactures and supplies chemicals for semiconductors processing, secondary batteries and solar cells | Process Industries |
- Stock Market
- Insiders
- Ji-Wan Jeong
