Companies/JP/4768

OTSUKA CORPORATION · 株式会社大塚商会

Executives 5Directors 10Avg age 69Avg tenure 12.9y

Kazuo Uneno

Director of Finance/CFO

Age 58Since 2025-02-28

Executives5

Kazuo Uneno

Director of Finance/CFO

Age 58Since 2025-02-28

Yuji Otsuka

President

Age 72Since 2001-07-31

Koichi Hisano

Compliance Officer

——

Minoru Sakurai

Chief Tech/Sci/R&D Officer

Age 69Since 2013-02-28

Hironobu Saito

Chief Administrative Officer

Age 77Since 2021-03-25

Board of directors10

Yuji Otsuka

Director/Board Member

Age 72Since 1992-02-29

Kazuyuki Katakura

Director/Board Member

Age 74Since 1997-02-28

Hironobu Saito

Director/Board Member

Age 77Since 2007-02-28

Hironobu Tsurumi

Director/Board Member

Age 71Since 2010-02-28

Minoru Sakurai

Director/Board Member

Age 69Since 2011-02-28

Jiro Makino

Director/Board Member

Age 73Since 2015-02-28

Tetsuo Saito

Director/Board Member

Age 72Since 2016-02-29

Kazuo Uneno

Director/Board Member

Age 58Since 2025-02-28

Shareholders5

Name	Stake	Shares
Yuji Otsuka	35.94 %	136,569,720
Otsuka Employee Stock Ownership Plan	2.234 %	8,490,000
Keiko Otsuka	1.832 %	6,963,000
JPMorgan Investment Management, Inc.	0.4379 %	1,663,900
JPMorgan Asset Management (Japan) Ltd.	0.4232 %	1,608,300

Catalog · 2026-07-09

Registry officers16

Name	Role	Since	Shares
中井陽子	取締役	2024-04-01	-
仲井一彦	監査役	2012-03-01	-
大塚裕司	代表取締役社長ＭＭ本部長	1992-03-01	-
山田耕一郎	取締役兼常務執行役員業種ＳＩ部門長、本部ＳＩ統括部長、業種ＳＩプロモーション部長	2018-03-01	-
村田達美	常勤監査役	2020-03-01	-
桜井実	取締役兼常務執行役員技術本部長、ＡＰソリューション部門長	2005-03-01	-
片倉一幸	取締役兼上席専務執行役員営業本部長	1997-03-01	-
牧野二郎	取締役	2004-03-01	-

Registry · as of 2026-12-31

OTSUKA CORPORATION · 株式会社大塚商会

Ownership & governance

Executives5

Board of directors10

Shareholders5

Registry officers16

Group companies

Institutional (13F)

Fund membership

Street consensus

Peers