Shiro Kaizuka

Director/Board Member at FULLCAST HOLDINGS CO., LTD.

Net worth: 889 055 $ as of 31/08/2026

64 year

9 connections

Commercial Services

Finance

Consumer Services

Profile

Shiro Kaizuka is currently the Director at Fullcast Holdings Co., Ltd., Representative Director at Riavvio, Inc., and President & Representative Director at Dimension Pockets KK.
In the past, he worked as the Chief Executive Officer at Fullcast Technology Co. Ltd., and as an Outside Director at MediBIC Group and Metaplanet KK.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
FULLCAST HOLDINGS CO., LTD. 0.21%	26/03/2026	75,200 ( 0.21% )	889 055 $	31/08/2026

Shiro Kaizuka active positions

Companies	Position	Start
FULLCAST HOLDINGS CO., LTD.	Director/Board Member	01/03/2017
Riavvio, Inc.	Director/Board Member	01/02/2010
Dimension Pockets KK Dimension Pockets KK Hotels/Resorts/Cruise linesConsumer Services Engages in development, management, construction, and sales of hotels, lodging house, pension house, and boarding houses	President	20/09/2013

All active positions of Shiro Kaizuka

Former positions of Shiro Kaizuka

Companies	Position	End
Fullcast Technology Co. Ltd. Fullcast Technology Co. Ltd. Personnel ServicesCommercial Services Provides staffing services for engineers; sells software	President	12/08/2011
METAPLANET INC.	Director/Board Member	-
MEDIBIC GROUP	Director/Board Member	-

See the detail of Shiro Kaizuka's experience

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Shiro Kaizuka's experience

Connections

1st degree connections

1st degree companies

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Female

Members of the board

Executives

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Linked companies

Private companies	6
MediBIC Group MediBIC Group Miscellaneous Commercial ServicesCommercial Services Provides analysis, report services on healthcare and drug development, computer system, business and consulting in biotech field services	Commercial Services
Metaplanet, Inc. Metaplanet, Inc. Investment Banks/BrokersFinance Provides bitcoin treasury services and operates hotels	Finance
Fullcast Technology Co. Ltd. Fullcast Technology Co. Ltd. Personnel ServicesCommercial Services Provides staffing services for engineers; sells software	Commercial Services
Fullcast Holdings Co., Ltd. Fullcast Holdings Co., Ltd. Personnel ServicesCommercial Services Provides employment placement services	Commercial Services
Riavvio, Inc.
Dimension Pockets KK Dimension Pockets KK Hotels/Resorts/Cruise linesConsumer Services Engages in development, management, construction, and sales of hotels, lodging house, pension house, and boarding houses	Consumer Services