M3 Inc. was established in September 2000 under the service name of So-net, with Sony Communications Network Corporation, a supplier of network-related services, as the largest stockholder.

Our company name M3 represents the three Ms of Medicine, Media, and Metamorphosis.Our company was founded with the goal of changing the world of medicine through making full use of the power of the Internet.

Corporate Data

Company Name M3, Inc.
Established September 2000
Capital 28,925 million yen
Listed Exchange Tokyo Stock Exchange First Section (Securities code 2413)
Principal Shareholders Sony Corporation 34.0%
M3 Management 3.0%
Employees 473 (consoli. 7,127)

Directors and Auditors

Representative Director Itaru Tanimura
Director Akihiko Tomaru
Director Eiji Tsuchiya
Director Kazuyuki Izumiya
Director Akinori Urae
Director Kenichiro Yoshida
Director Kenichi Mori
Director (Audit and Supervisory Committee Member) Masako Ii
Director (Audit and Supervisory Committee Member) Mayuka Yamazaki
Director (Audit and Supervisory Committee Member) Ryoko Toyama

Nature of Business

Providing medical-related services through the use of the Internet.

Head Office

Akasaka Intercity 10th floor
1-11-44 Akasaka
Minato-ku, Tokyo 107-0052 JAPAN
TEL:+81-3-6229-8900 FAX:+81-3-6229-8922

2 minutes from Tameikesanno Station Exit 13 (Ginza Line or Nanboku Line)
2 minutes from Kokkaigijidou-mae Station (Tameikesanno) Exit 13 (Chiyoda Line or Marunouchi Line)




M3 Group Code of Conduct

M3 Corporate Governance Report

About M3

Philosophy & Approach