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Corporate Information

Company Name GMO Internet, Inc.
Established May 24, 1991
Head Office Cerulean Tower 4-14F, 26-1 Sakuragaokacho, Shibuya ku, Tokyo, JAPAN

Investor Relations:
Fax: +81-3-5456-2556
Corporate Site:
Investor Relations Site:
Business Segments Internet Infrastructure
Online Advertising & Media
Internet Securities
Mobile Entertainment
Capital JPY 5.0 billion(as of 9/2016)
Stock Exchange Tokyo Stock Exchange : First Section
Stock Code 9449
Board of Directors
    *denotes current position

Founder & Group CEOMasatoshi Kumagai
Chief Financial Officer, CPAMasashi Yasuda
Chief Operating OfficerHiroyuki Nishiyama
Managing DirectorIssei Ainoura
Managing DirectorTadashi Ito
Managing DirectorHirofumi Yamashita
Executive DirectorKazuhiko Miyazaki
Executive DirectorToshiaki Horiuchi
Executive DirectorKatsumi Arisawa
Board of Directors, CPATeruhiro Arai
Board of DirectorsKentaro Sato
Board of DirectorsKimihiro Kodama
Board of DirectorsMasamitsu Nomura
Board of DirectorsAkihito Suzuki
Board of DirectorsIchiro Chujo
Board of DirectorsTeruyuki Mori
Board of Directors Audit CommitteeMasahiro Muto
Board of Directors Audit Committee, CPAKeigo Ogura
Board of Directors Audit Committee, CTATakashi Gunjikake
Board of Directors Audit Committee, SolicitorKaname Masuda
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    Fujio Maruyama

    Technology Advisor
    (Information, Production and Systems Research Center WASEDA UNIVERSITY, Visiting Researcher)

        Graduated from Tokyo University, Education Faculty
        Doctorate in Social Science Research, Hitotsubashi University
        Wakkanai Hokusei Gakuen University, Professor
        Wakkanai Hokusei Gakuen University, Chancellor for two terms as the university transitioned to a 4-year school
        Waseda University, Information Production Systems Research, Professor
        Future University Hakodate, Information Faculty Professor (Special Appointment)
        Japan Java Users Group, Chairman
        Cloud Research, representative
        Japan Android Group, member

    Hideyuki Negoro

    Special Advisor
    (Born in Tokyo, Doctor, Doctor of Medicine)

    Academic History   Associate professor at the Harvard University Medical Faculty, University of Paris Medical Faculty, and University of Milan, Board Member and Professor at the Graduate School of Project Design.
    Affiliation and
    Advisory Roles
      Internal Medicine Specialist - Japanese Society of Internal Medicine, Advisor - Japanese Society of Anti-Aging Medicine, Advisor on Japan - American Academy of Anti-Aging Medicine, Advisor - Tokyo Marine Nichido, Advisor - Dentsu.
        Doctor Negoro's specializations include internal medicine, anti-aging medicine, gene therapy,longevity gene therapy, and aesthetic internal medicine. Conducting research at 5 universities worldwide, Doctor Negoro is active in world leading clinical research and medical training. He is also the author of several best-selling books including Shintai Kakumei - Sekai Saisentan Anti-Aging Hosoku (The Body Revolution - World Leading Antiaging Techniques) and Netteiru Uchi ni Byoki ni Naranai Karada wo Tsukuru Hon (Building defense against sickness while you sleep), both published by Kadogawa Marketing.

    Masakazu Iwakura

    Special Advisor

    April 1987   Dai-ichi Tokyo Bar Association registration Joined Nishimura Law Office (now Nishimura & Partners)
    April 1992   Professor, Law Faculty, Rikkyo University
    September 1993   Debevoise & Plimpton LLP
    August 1994   Arnold & Porter LLP
    January 1996   Partner, Nishimura & Partners*
    April 2004   Professor, Law Faculty, Hitotsubashi University*
    June 2005   Auditor, ICJ*
    April 2005   Professor, Graduate School of Law, Kyoto University
    June 2005   Appointed External Auditor of, Inc.
    April 2006   Professor, Graduate School of International Corporate Strategy, Hitotsubashi University*
    June 2006   External Director, FANCL Corporation
    April 2007   Visiting Scholar, Harvard University Law School
    January 2008   Financial External Auditor,
    June 2009   External Director,*
    March 2010   Appointed to Board of Auditors of GMO Internet*
    June 2010   Appointed External Director, Nidec Corporation*
    June 2011   Appointed External Auditor, Imperial Hotel*
    July 2012   Appointed External Auditor, COOKPAD Inc.*
    April 2013   Visiting Scholar, Harvard University Law School (returning)
    March 2014   Apointed External Director, GMO Internet
    March 2016   Special Advisor, GMO Internet*
Full-time employees Contract employees Total
4,498 958 5,156
(Total group employees as of end of 9/2016)
Affiliations IA Japan - Internet Association Japan
ICANN - Internet Corporation for Assigned Names and Numbers
JAIPA - Japan Internet Providers Association
Japan Association of New Economy
JPNIC - Japan Network Information Center
Metropolitan Police Department - High Tech Crime Prevention Association
Trading Banks Aozora Bank (Headquarters)
Bank of Tokyo-Mitsubishi UFJ (Shibuya Branch)
Mitsubishi UFJ Trust and Banking (Headquarters)
Mizuho Bank (Shibuya Branch)
Resona Bank (Shibuya Branch)
Sumitomo Mitsui Banking Corporation (Shibuya-ekimae Branch)

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