Masumi Shiraishi

Director/Board Member at RYOYO ELEC

67 year

Consumer Services

Process Industries

Electronic Technology

Profile

Masumi Shiraishi currently serves as Independent Outside Director at Ryoyo Electro Corp.
since 2019, at Mikuni Corp.
since 2022, and at SENKO Group Holdings Co., Ltd. starting in 2025.
Also holds the position of Outside Director at E-SUPPORTLINK Ltd. and Professor at Kansai University since 2007.
Former roles include Independent Outside Director at Asahi Kasei Corp., Outside Director at JP Holdings, Inc. from 2010 to 2014, Independent Director at C'BON COSMETICS Co., Ltd., Outside Director at Ryoyo Ryosan Holdings, Inc. from 2024 to 2025, and Professor at Toyo University.

Masumi Shiraishi active positions

Companies	Position	Start
RYOYO ELEC	Director/Board Member	2019-03-31
MIKUNI CORPORATION	Director/Board Member	2022-05-31
E-SUPPORTLINK, LTD.	Director/Board Member	-
SENKO GROUP HOLDINGS CO., LTD.	Director/Board Member	2025-05-31
Kansai University Kansai University Other Consumer ServicesConsumer Services Functions as a College/University	Corporate Officer/Principal	2011-03-16

All active positions of Masumi Shiraishi

Former positions of Masumi Shiraishi

Companies	Position	End
C'BON COSMETICS CO.,LTD.	Director/Board Member	-
Toyo University Toyo University Other Consumer ServicesConsumer Services Functions as a College/University	Corporate Officer/Principal	-
ASAHI KASEI CORPORATION	Director/Board Member	-
JP-HOLDINGS,INC.	Director/Board Member	-

See the detail of Masumi Shiraishi's experience

Experiences
Positions held

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Inactive

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Private companies

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Linked companies

Private companies	9
Asahi Kasei Corp. Asahi Kasei Corp. Chemicals: SpecialtyProcess Industries Manufactures synthetic, polystyrene and chemical resins, lithium-ion battery separators, drugs & medical equipment and constructs homes & provides plant engineering and temporary staffing solutions	Process Industries
Ryoyo Electro Corp. Ryoyo Electro Corp. SemiconductorsElectronic Technology Manufactures and wholesales semiconductors & electronic components and IT equipment	Electronic Technology
SENKO Group Holdings Co., Ltd. SENKO Group Holdings Co., Ltd. Air Freight/CouriersTransportation Operates as a holding company which provides logistics and petroleum trading services	Transportation
Mikuni Corp. Mikuni Corp. Auto Parts: OEMProducer Manufacturing Manufactures and sells fuel supply systems, control devices & imports aircrafts parts and lawn care machinery	Producer Manufacturing
JP Holdings, Inc. JP Holdings, Inc. Other Consumer ServicesConsumer Services Provides catering and nursing care services	Consumer Services
E-SUPPORTLINK Ltd. E-SUPPORTLINK Ltd. Data Processing ServicesTechnology Services Provides food distribution systems for producers and distributors	Technology Services
Kansai University Kansai University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
C'BON COSMETICS Co., Ltd. C'BON COSMETICS Co., Ltd. Household/Personal CareConsumer Non-Durables Develops, manufactures and sells skin care products	Consumer Non-Durables
Toyo University Toyo University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services