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 1,587 million yen
Listed Exchange Tokyo Stock Exchange First Section (Securities code 2413)
Principal Shareholders Sony Corporation 34.0%
M3 Management 3.2%
Employees 332

Directors and Auditors

Representative Director Itaru Tanimura
Director Akihiko Tomaru
Director Takahiro Tsuji
Director Eiji Tsuchiya
Director Akinori Urae
Director Kazuyuki Izumiya
Director Kenichiro Yoshida
Director (Audit and Supervisory Committee Member) Nobuto Horino
Director (Audit and Supervisory Committee Member) Akiko Suzuki
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)




About M3

Philosophy & Approach