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Directors

Koichi Suzuki

Date of birth: September 3, 1946

Career & current positions in and outside IIJ

  • December 1992 Director at the time of the establishment of IIJ
  • April 1994 President, Representative Director and Chief Executive Officer ("CEO") of IIJ
  • June 2013 Chairman of the Board, Representative Director and CEO of IIJ
  • April 2021 Chairman of the Board, Representative Director and Co-CEO of IIJ
  • April 2024 Member of the Board, Representative Director, Chairman and Co-CEO of IIJ (current position)

Important concurrent posts

  • Chairman of the Board, Representative Director of IIJ Engineering Inc.
  • Chairman of the Board of IIJ America Inc.
  • President and Representative Director of INTERNET MULTIFEED CO.
  • Representative Director and Chairman of JOCDN Inc.

Number of Shares Owned(*)

7,403,589

Eijiro Katsu

Date of birth: June 19, 1950

Career & current positions in and outside IIJ

  • April 1975 Joined Ministry of Finance ("MOF")
  • July 2007 Director-General of the Financial Bureau, MOF
  • July 2008 Deputy Vice Minister, MOF
  • July 2009 Director-General, Budget Bureau, MOF
  • July 2010 Vice Minister of Finance
  • August 2012 Resigned from MOF
  • November 2012 Joined IIJ as Special Advisor
  • June 2013 President, Representative Director and Chief Operating Officer ("COO") of IIJ
  • April 2021 President, Representative Director and Co-CEO & COO of IIJ
  • April 2024 Member of the Board, Representative Director, President and Co-CEO & COO of IIJ (current position)

Number of Shares Owned(*)

210,795

Satoshi Murabayashi

Date of birth: November 8, 1958

Career & current positions in and outside IIJ

  • April 1981 Joined The Sanwa Bank, Ltd. (currently MUFG Bank, Ltd.)
  • June 2007 Executive Officer of The Bank of Tokyo-Mitsubishi UFJ, Ltd. (currently MUFG Bank, Ltd.)
  • June 2013 Managing Director of the same
  • May 2015 Senior Managing Director of the same
  • June 2015 Senior Managing Corporate Executive of Mitsubishi UFJ Financial Group, Inc.
  • June 2017 President and Representative Director of Mitsubishi UFJ Research and Consulting Co., Ltd.
  • June 2021 Executive Vice President and Director of IIJ
  • April 2022 President and Representative Director of DeCurret Holdings Inc. (current position)
  • April 2024 Member of the Board, Executive Vice President of IIJ (current position)

Important concurrent posts

  • President and Representative Director of DeCurret Holdings, Inc.

Number of Shares Owned(*)

5,819

Yasuhiko Taniwaki

Date of birth: September 11, 1960

Career & current positions in and outside IIJ

  • April 1984 Joined the Ministry of Posts and Telecommunications (now, the Ministry of Internal Affairs and Communications ("MIC"))
  • June 2013 Deputy Director-General for the National Center of Incident Readiness and Strategy for Cybersecurity (NISC) and Councilor for the Cabinet Secretariat
  • June 2016 Director-General of the Global ICT Strategy Bureau, MIC
  • July 2017 Director-General for Information Security, MIC
  • July 2018 Director-General of the Telecommunications Bureau, MIC
  • December 2019 Vice-Minister for Policy Coordination of Posts and Telecommunications, MIC
  • March 2021 Resigned from MIC
  • January 2022 Advisor of IIJ
  • June 2022 Executive Vice President and Director of IIJ
  • April 2024 Member of the Board, Executive Vice President of IIJ (current position)

Number of Shares Owned(*)

2,617

Koichi Kitamura

Date of birth: May 12, 1954

Career & current positions in and outside IIJ

  • April 1978 Joined Nippon Steel Corporation
  • June 2004 Director of NS Solutions Corporation
  • April 2009 Executive Director of the same
  • April 2012 Managing Executive Director of the same
  • June 2016 Director & Vice-president Operating Officer of the same
  • April 2020 Senior Managing Executive Officer and Deputy Unit Director of Business Unit of IIJ
  • April 2021 Senior Managing Executive Officer and Business Unit Director of IIJ
  • June 2021 Senior Managing Director and Business Unit Director of IIJ
  • April 2024 Member of the Board, Senior Managing Executive Officer and Business Unit Director of IIJ (current position)

Number of Shares Owned(*)

10,798

Akihisa Watai

Date of birth: September 30, 1965

Career & current positions in and outside IIJ

  • April 1989 Joined Sumitomo Bank, Ltd. (currently Sumitomo Mitsui Banking Corporation)
  • August 1996 Temporarily seconded to IIJ
  • February 2000 Joined IIJ
  • June 2004 Director and Chief Financial Officer ("CFO") of IIJ
  • April 2010 Managing Director and Chief Financial Officer of IIJ
  • April 2015 Division Director of Financial Division of IIJ (current position)
  • April 2021 Senior Managing Director and Chief Financial Officer of IIJ
  • April 2024 Member of the Board, Senior Managing Executive Officer and CFO of IIJ (current position)

Number of Shares Owned(*)

68,157

Junichi Shimagami

Date of birth: April 17, 1967

Career & current positions in and outside IIJ

  • April 1990 Joined Nomura Research Institute, Ltd.
  • September 1996 Joined IIJ
  • June 2007 Director of IIJ
  • April 2010 Executive Managing Officer of IIJ
  • April 2015 Senior Executive Officer, Division Director of Network Division and Chief Technology Officer ("CTO") of IIJ
  • June 2015 Director and CTO of IIJ
  • April 2016 Technology Unit Director of IIJ (current position)
  • June 2020 Managing Director and CTO of IIJ
  • April 2024 Member of the Board, Senior Managing Executive Officer and CTO of IIJ (current position)

Number of Shares Owned(*)

51,557

Takashi Tsukamoto

Date of birth: August 2, 1950

Outside Independent

Career & current positions in and outside IIJ

  • April 1974 Joined The Dai-Ichi Kangyo Bank, Ltd. (currently Mizuho Bank, Ltd.
  • )
  • April 2004 Managing Executive Officer (Head of EMEA) of Mizuho Corporate Bank, Ltd.
  • April 2009 President and CEO of Mizuho Financial Group, Inc.
  • June 2011 President and CEO of Mizuho Bank, Ltd. Chairman of Mizuho Financial Group, Inc.
  • July 2013 Chairman of Mizuho Bank, Ltd.
  • April 2014 Senior Advisor of Mizuho Financial Group, Inc.
  • April 2017 Honorary Advisor of Mizuho Financial Group
  • June 2017 Member of the Board of IIJ (current position)
  • July 2023 Senior Advisor of Mizuho Financial Group, Inc. (current position)

Number of Shares Owned(*)

12,300

Kazuo Tsukuda

Date of birth: September 1,1943

Outside Independent

Career & current positions in and outside IIJ

  • April 1968 Joined Mitsubishi Heavy Industries, Ltd.
  • June 1999 Director of the same
  • April 2002 Managing Director of the same
  • June 2003 President and Representative Director of the same
  • April 2008 Chairman of the Board, Representative Director of the same
  • April 2013 Chief Executive Adviser of the same
  • June 2019 Special Advisor of the same
  • June 2020 Member of the Board of IIJ (current position)
  • June 2021 Honorary Advisor of Mitsubishi Heavy Industries, Ltd.

Number of Shares Owned(*)

2,700

Yoichiro Iwama

Date of birth: September 15, 1943

Outside Independent

Career & current positions in and outside IIJ

  • April 1967 Joined Tokio Marine and Fire Insurance Co., Ltd (currently Tokio Marine and Nichido Fire Insurance Co., Ltd.)
  • June 1996 Director of the same
  • April 2005 Senior Managing Director of the same
  • June 2005 President and Representative Director of Tokio Marine Asset Management Co., Ltd.
  • June 2010 Chairman of Japan Securities Investment Advisers Association (currently Japan Investment Advisers Association)
  • May 2018 Outside Director and Chairman of the Board of Nikko Asset Management Co., Ltd. (current position)
  • June 2021 Member of the Board of IIJ (current position)

Important concurrent posts

Outside Director and Chairman of the Board of Nikko Asset Management Co., Ltd.

Number of Shares Owned(*)

2,400

Atsushi Okamoto

Date of birth: March 26, 1954

Outside Independent

Career & current positions in and outside IIJ

  • April 1977 Joined Iwanami Shoten, Publishers
  • April 2008 Division Manager of Production Department of the same
  • June 2010 Director of the same
  • June 2013 President and CEO of the same
  • June 2022 Member of the Board of IIJ (current position)

Number of Shares Owned(*)

1,300

Kaori Tonosu

Date of birth: December 24, 1961

Outside Independent

Career & current positions in and outside IIJ

  • April 1985 Joined the Fuji Bank, Limited (currently Mizuho Bank, Ltd.)
  • June 2001 Joined Tohmatsu & Co. (currently Deloitte Touche Tohmatsu LLC)
  • June 2006 Partner of the same
  • November 2015 Board member of Deloitte Tohmatsu LLC
  • June 2018 Board member of Deloitte Touche Tohmatsu LLC
  • June 2022 Director of JAPAN POST INSURANCE Co., Ltd. (current position)
  • June 2022 Member of the Board of IIJ (current position)

Number of Shares Owned(*)

200

  • (*)The number of shares owned as of March 31, 2024.

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