Directors | Investor Relations

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(*)

7,395,222

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(*)

201,200

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(*)

3,802

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(*)

200

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(*)

8,924

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(*)

66,168

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(*)

50,040

Tadashi Kawashima

Date of birth: February 27, 1963

Career & current positions in and outside IIJ

April 1987 Joined Nippon Telegraph and Telephone Corporation
July 1988 Joined NTT DATA Communications Systems Corporation (currently NTT DATA Corporation)
June 2011 Head of Public Division 2, First Public Administration Systems Corporate Headquarters of the same
June 2013 Senior Specialist of Public and Financial IT Service Business Development Division of the same
June 2013 President and Representative Director of NTT Data Tokai Corporation
June 2015 Managing Director of IIJ
April 2016 Deputy Unit Director of Business Unit of IIJ
April 2021 Division Director of Central Nippon Business Division (current position)
April 2024 Member of the Board, Senior Managing Executive Officer (current position)

Number of Shares Owned(*)

21,098

Naoshi Yoneyama

Date of birth: November 25, 1965

Career & current positions in and outside IIJ

April 1990 Joined Sumitomo Bank, Limited (currently Sumitomo Mitsui Banking Corporation)
October 1998 Joined IIJ
April 2012 Executive Officer and Division Director of Technology Management Division of IIJ
April 2015 Executive Managing Officer, Division Director of Technology Unit, and General Manager of Corporate Planning Department of IIJ
April 2018 Senior Executive Officer and Division Director of Corporate Planning Division of IIJ
June 2019 Director and Division Director of Corporate Planning Division of IIJ
April 2021 Director, Chief Information Officer ("CIO") and Division Director of Corporate Planning Division of IIJ
April 2024 Member of the Board, Senior Managing Executive Officer, CIO and Division Director of Corporate Planning Division of IIJ (current position)

Number of Shares Owned(*)

89,930

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(*)

11,000

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(*)

1,900

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)