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OTSUKA CORPORATION

株式会社大塚商会
Ticker
4768 ↗
Listed market
TYO
Country
Japan
Employees (consolidated)
10,079
Related companies
17
§01

Basic information

BASIC
Head office
2-18-4 Iidabashi, Chiyoda-ku, Tokyo
Chief executive
Yūji Otsuka
Capital
10,374,851,000 　(103 100 million)
Employees (non-consolidated)
8,287 people
Employees (consolidated)
10,079 people
Start date
1961-07-17
End date
§02

Websites

1 DOMAINS
§03

Business

2
System integration business / Sales of computers, multifunction devices, communication equipment, software, and development of commissioned softwareService & support business / Supply, maintenance, educational support
§04

Related companies

17 COMPANIES
Company name Group Parent Subsidiary Customer Supplier Alliance Bank Shareholder
General Incorporated Association Information and Communications Network Industry Association
Group
OSK Corporation
Group Subsidiary
Science Based Targets initiative
Group
Japan Computer System Sales Association
Group
Japan Information Systems User Association
Group
Public Interest Incorporated Association of Corporate Informatization
Group
Networld Corporation
Group Subsidiary
General Incorporated Association Software Association
Group
Japan Information Services Industry Association (JISA)
Group
World Wildlife Fund Japan Foundation
Group
Green Purchasing Network
Group
Japan Lighting Industry Association
Group
Japan Electronics and Information Technology Industries Association
Group
Alpha Tech Co., Ltd.
Group Subsidiary
AlphaNet Corporation
Group Subsidiary
Task Force on Climate-related Financial Disclosures
Group
Corporate Mail Order Tano-meru
Group
Names without a link are companies not yet registered in OpenBizGraph
§05

Network

NETWORK
Drag to move · click to open
§06

History

3 EVENTS

We announced our medium- to long-term management policy.Sources

We received the Minister's Award for the Local Revitalization Support Tax (Corporate Version Furusato Tax) and were selected as a DX Focus Company 2024.Sources

We were selected as a DX Focus Company 2025.Sources

§07

News

5 ARTICLES

Microsoft 365 Connection FailureSources

Multiple customers are experiencing a failure that prevents them from connecting to Microsoft 365 services. Affected services include Exchange Online, Microsoft Teams, SharePoint Online, Microsoft 365 Copilot, Microsoft Defender XDR, Planner, To Do, Intune, Defender for Office 365, Purview, Power BI (PDF export of reports with sensitivity labels), and the Microsoft 365 Apps Admin Center. Microsoft is currently restoring services and will provide updates as progress is made.

Otsuka Shokai Website Update (2026)Sources

This page contains the website update information announced by Otsuka Shokai in 2026. For October, articles and materials on reading, columns, solutions, and products are listed. The information displayed is current as of the announcement date.

Website-wide Maintenance and Service OutageSources

Due to system infrastructure maintenance, some services on the Otsuka Shokai website will be unavailable from 10:00 PM on Friday, October 23, 2026, to 1:00 PM on Sunday, October 25, 2026. This will affect all content and functions on customers' My Pages, as well as new registrations and logins for Otsuka ID. Maintenance on September 4‑6 and October 9‑12 has already been completed.

Service Resumption of Inquiry Forms and Other ServicesSources

We have resumed services such as various inquiry forms, event and seminar registrations, and school applications that were temporarily suspended for security measures, after confirming their safety. The suspension period was from 9:00 to around 11:00 on October 22, 2026, and services are now available as usual. Otsuka Shokai apologizes for any inconvenience caused to users.

End of Support for Adobe Acrobat 2020 and ReaderSources

Due to the end of support, security risks increase, so we recommend updating to the latest subscription version.

§08

Public records

GOV
National Tax Agency basic information1010001012983
Source: National Tax Agency Corporate Number Publication Site, basic three itemsSources
Trade name
株式会社大塚商会
Trade name (kana)
オオツカショウカイ
Name in English
Corporation type
301
Address
〒102-0072 東京都千代田区飯田橋２丁目１８番４号
Postal code
1020072
Prefecture code
13
City code
101
Address outside Japan
Prefecture in English
City in English
Address outside Japan in English
Corporate number assignment date
2015-10-05
Update date
2018-04-12
Change date
2015-10-05
Registry closure date
Reason for registry closure
Successor corporate number
Details of the change
Latest record
1
Excluded from search
0
Processing type
01
Correction type
1
Trade name image ID
Address image ID
Sequence number
1270493
METI gBizINFO1010001012983
Source: gBizINFO (Ministry of Economy, Trade and Industry)Sources
Corporate number
1010001012983
Trade name
株式会社大塚商会
Trade name (kana)
オオツカショウカイ
Trade name (alphabet)
Registry closure date
Reason for registry closure
Registered address
東京都千代田区飯田橋２丁目１８番４号
Postal code
1020072
Prefecture
東京都
Prefecture code
13
City or district
千代田区
City code
101
Street address
飯田橋２丁目１８番４号
Organisation type
301
Processing type
01
Correction type
1
Status
Representative
代表取締役社長    大塚  裕司
Capital
10374000000
Employees
8673
Employees (male)
6209
Employees (female)
2654
Business summary
?システムインテグレーション事業／コンピューター、複合機、通信機器、ソフトウェアの販売および受託ソフトの開発など ?サービス&サポート事業／サプライ供給、保守、教育支援など
Website URL
https://www.otsuka-shokai.co.jp/
Year founded
Business category
G:情報通信業
Date established
1961-12-13
Unified government qualification - grade
|A|A|A
Unified government qualification - business items
209|214|215|216|217|218|220|221|223|229|301|302|303|304|306|308|309|313|315|402
Update date
2018-04-12
Key information
1010001012983
§09

Sources & updates

SOURCES
DOMAINOwn domain：Yes
UPDATED2026-11-08 08:54 · Model: gpt-4.1-nano
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