![Kazumasa Ohkubo](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>)
Fortune : 20 M $ au 31/07/2026
Kazumasa Ohkubo served as Chairman & President of JEM America Corp.
from 2004 to 2015.
Occupied the position of Chairman at JEM (Hong Kong) Co., Ltd., Jem Europe SARL, Jem Taiwan Probe Corp., and Jem Shanghai Co. Ltd. Worked as Executive President & Representative Director of JAPAN ELECTRONIC MATERIALS CORP.
from 2017 to 2023.
Held the role of Representative Director & Vice President at Jem Korea Co. Ltd. Former jobs include Chairman & President of JEM America Corp., Chairman of JEM (Hong Kong) Co., Ltd., Jem Europe SARL, Jem Taiwan Probe Corp., Jem Shanghai Co. Ltd., Executive President & Representative Director of JAPAN ELECTRONIC MATERIALS CORP., and Representative Director & Vice President of Jem Korea Co. Ltd.
| Société | Date | Nombre d'actions | Valorisation | Date de valorisation |
|---|---|---|---|---|
| 10/03/2026 | 511 325 ( 3,49% ) | 20 M $ | 31/07/2026 |
| Sociétés | Poste | Fin |
|---|---|---|
Jem Shanghai Co. Ltd.
 Jem Shanghai Co. Ltd. Electronic Production EquipmentElectronic Technology Manufactures and sells electron tubes and semiconductor testing equipments | Président | - |
JEM (Hong Kong) Co., Ltd. | Président | - |
Jem Taiwan Probe Corp. | Président | - |
JEM America Corp.
 JEM America Corp. Wholesale DistributorsDistribution Services Supplies probe cards and tester interfaces | Président | - |
Jem Europe SARL
 Jem Europe SARL Electronic Production EquipmentElectronic Technology Manufactures probe cards | Président | - |
Actives
Inactives
Sociétés cotées
Entreprise privées
| Entreprise privées | 7 |
|---|---|
JAPAN ELECTRONIC MATERIALS CORP.
 JAPAN ELECTRONIC MATERIALS CORP. SemiconductorsElectronic Technology Develops, manufactures and sells electron tubes and semiconductor testing equipment | Electronic Technology |
JEM America Corp.
JEM America Corp. Wholesale DistributorsDistribution Services Supplies probe cards and tester interfaces | Distribution Services |
JEM (Hong Kong) Co., Ltd. | |
Jem Korea Co. Ltd.
 Jem Korea Co. Ltd. SemiconductorsElectronic Technology Manufactures and markets semiconductor products | Electronic Technology |
Jem Europe SARL
Jem Europe SARL Electronic Production EquipmentElectronic Technology Manufactures probe cards | Electronic Technology |
Jem Taiwan Probe Corp. | |
Jem Shanghai Co. Ltd.
Jem Shanghai Co. Ltd. Electronic Production EquipmentElectronic Technology Manufactures and sells electron tubes and semiconductor testing equipments | Electronic Technology |
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