Born Jul 1955 Apr 1978 Joined Nippon Telegraph and Telephone Public Corporation (now NTT, Inc.) Jun 2008 Director, General Manager of Corporate Planning Department, NTT Communications Corporation (now NTT DOCOMO BUSINESS, Inc.) Jun 2011 Managing Director, General Manager of Corporate Planning Department, NTT Communications Corporation Jun 2012 Representative Director, Executive Vice President, General Manager of Corporate Planning Department, NTT Communications Corporation Jun 2013 Representative Director, Executive Vice President, NTT Communications Corporation Jun 2014 Representative Director, Executive Vice President, NTT, Inc. Jun 2018 Representative Director, President, NTT, Inc. Jun 2020 Representative Director, President and Executive Officer, NTT, Inc. Jun 2022 Representative Director and Chairman, NTT, Inc. Jun 2024 Director and Chairman of the Board, NTT, Inc. (current) Jun 2025 Director, Sumitomo Mitsui Financial Group, Inc. (current) Jun 2026 Director, Japan Exchange Group, Inc. (current) Jun 2026 Director, Nippon Steel Corporation (current)

Born Dec 1957 Apr 1981 Joined Nippon Telegraph and Telephone Public Corporation (now NTT, Inc.) Jun 2007 Senior Manager, Corporate Planning Department, NTT, Inc. Jul 2007 General Manager of Finance Department, NTT West (Nippon Telegraph and Telephone West Corporation) Jul 2009 General Manager of General Affairs and Human Resources Department, NTT East (Nippon Telegraph and Telephone East Corporation) Jun 2011 Director, General Manager of General Affairs and Human Resources Department, NTT East Jun 2012 Director, General Manager of General Affairs Division, NTT, Inc. Jun 2015 Managing Director, General Manager of General Affairs Division, NTT, Inc. Jun 2018 Representative Director, Executive Vice President, NTT, Inc. Jun 2020 Representative Director, Executive Vice President and Executive Officer, NTT, Inc. Jun 2022 Representative Director, President and Executive Officer, CEO, NTT, Inc. (current)

Born Mar 1966 Apr 1990 Joined Nippon Telegraph and Telephone Corporation (now NTT, Inc.) Jul 2005 Senior Manager, Medium-term Management Strategy Promotion Office, NTT, Inc. Jul 2007 Senior Manager, R&D Center, Network Business Promotion Division, NTT East Jul 2010 Senior Manager, Facilities Department, Network Business Promotion Division, NTT East Jul 2014 Branch Manager, Tokyo South Branch, Tokyo Business Division, NTT East Jun 2016 Senior Manager, Corporate Planning Department, NTT East Jun 2018 Director, General Manager of Facilities Planning Department, Network Business Promotion Division, NTT East Jun 2021 Director and Executive Officer, General Manager of Network Business Promotion Division, NTT East Jun 2022 Representative Director, Executive Vice President and Executive Officer, NTT East Jun 2025 Representative Director, Executive Vice President and Executive Officer, in charge of Technology Strategy, CTO, NTT, Inc. (current)

Born Sep 1965 Apr 1990 Joined NTT Data Communications Systems Corporation (now NTT DATA Group Corporation). Held key positions including head of Business Solutions Division and head of IT Innovation Division for Manufacturing Industry. Jun 2024 Representative Director, President, NTT DATA Group Corporation Jun 2026 Representative Director, Executive Vice President and Executive Officer, CFO, NTT, Inc. (current)

Born Dec 1966 Apr 1989 Joined Nippon Telegraph and Telephone Corporation (now NTT, Inc.). Served in roles including Executive Officer, Business Solutions Division, at NTT East, NTT Broadband Platform, and NTT Communications Corporation (now NTT DOCOMO BUSINESS, Inc.). Jun 2023 Executive Officer in charge of Research Planning Division Jun 2024 Managing Director, Senior Managing Executive Officer, CCXO, Co-CAIO, NTT, Inc. (current)

Born Mar 1955 Jan 1982 Joined Olivetti S.p.A. Engaged in consulting at Ernst & Young and A.T. Kearney. Jan 2002 Founded Value Partners S.p.A. Jan 2002 CEO, Value Team S.p.A. (now NTT DATA Italia S.p.A.) Jan 2002 CEO, NTT DATA EMEA Jan 2002 Chairman, NTT DATA Italia Jan 2022 Director, NTT DATA, Inc. Jun 2025 Director, NTT, Inc. (current)

Born Jul 1951 Jan 2000 Professor, Graduate School of Interdisciplinary Information Studies, The University of Tokyo Jan 2002 Director, YRP Ubiquitous Networking Laboratory (current) Jan 2009 Representative, Chair Program for Ubiquitous Information Society, The University of Tokyo Jan 2014 Led predecessor organization of the Digital Garden City Nation Initiative Jan 2017 Professor, Toyo University; Professor Emeritus, The University of Tokyo Jun 2019 Outside Director (Independent), NTT, Inc. (current) Jan 2026 Director, Digital Garden Inc.

Born Apr 1953 Jan 1976 Joined The Dai-ichi Life Insurance Company, Limited (now Dai-ichi Life Holdings, Inc.). Served as Representative Director and Chairman, among other positions. Jun 2022 Outside Director, NTT, Inc. (current) Director, Oriental Land Co., Ltd.

Born May 1968 Jan 1994 Joined Diamond, Inc. Jan 2006 Deputy Editor-in-Chief, Weekly Diamond Jan 2015 Project Professor, Keio University Jan 2016 Outside Director, NTT DOCOMO, Inc. Jan 2018 Outside Director, Ain Holdings Inc. Jan 2019 Outside Director, Hankyu Hanshin Holdings, Inc. Jan 2021 Outside Director, Japan Elevator Service Holdings Co., Ltd. Jun 2022 Outside Director (Independent), NTT, Inc. (current) Apr 2024 Professor, Waseda University Research Institute (concurrent) (current)

Born Feb 1961 Apr 1983 Joined Sony Corporation Jan 2013 Executive Officer, SVP, Head of Legal Division and Head of Compliance Division Jun 2023 Director, Tokyo Metro Co., Ltd. and TBS Holdings, Inc. Jun 2024 Outside Director (Independent), NTT, Inc. (current)

Born Feb 1965 Apr 1989 Joined Mitsubishi Kasei Corporation (now Mitsubishi Chemical Group Corporation). Served at Mitsubishi Chemical Science and Technology Research Center and Global Compact Network Japan, among others. Jan 2014 to Jan 2016 Senior Specialist, Public-Private Human Resource Exchange Center, Cabinet Office; Administrative Inspector (Promotion of Women's Empowerment) Jan 2021 Representative Director, Mitsubishi Chemical Research Corporation Jun 2026 Outside Director, NTT, Inc. (current) Director, Sumitomo Heavy Industries, Ltd. and NGK Spark Plug Co., Ltd.

Born Jul 1963 Apr 1987 Joined Nippon Telegraph and Telephone Corporation (now NTT, Inc.) Jan 2014 General Manager of Internal Control Department Jan 2016 Served in roles including Regional Business Division, NTT East Jan 2019 Managing Director, NTT Infranet Co., Ltd. Jan 2020 Audit & Supervisory Board Member, NTT, Inc. Jun 2025 Director, Full-time Audit and Supervisory Committee Member, NTT, Inc. (current)

Born Jun 1960 Apr 1984 Joined Board of Audit of Japan Jan 2018 Deputy Secretary-General, General Secretariat, Board of Audit of Japan Dec 2018 Secretary-General, Board of Audit of Japan Jun 2022 Full-time Audit & Supervisory Board Member, NTT, Inc. Jun 2025 Director, Full-time Audit and Supervisory Committee Member (Independent, Outside Director), NTT, Inc. (current)

Born May 1964 Jan 1987 Joined NTT Jan 2002 General Manager, Fourth Division, NTT Jan 2005 General Manager of Finance Department, NTT West (Nippon Telegraph and Telephone West Corporation) Jan 2008 General Manager of Accounting Department, NTT Expartners Jan 2011 General Manager of Finance Department, NTT Jan 2016 Executive Officer in charge of Finance, NTT Data Group Jan 2021 to Jan 2026 Managing Director (General Manager of Finance), NTT Finance Corporation Jun 2026 Director, Full-time Audit and Supervisory Committee Member, NTT, Inc. (current)

Born Sep 1953 Jan 1977 Served as faculty member at Gakushuin University and The University of Tokyo Jan 2016 Professor Emeritus, The University of Tokyo Jan 2017 Director, Sumitomo Mitsui Trust Bank, Limited Jun 2025 Director, Audit and Supervisory Committee Member (Independent, Outside Director), NTT, Inc. (current) Previously Audit & Supervisory Board Member, NTT, Inc.

Born Jan 1958 Jan 1981 Joined Chuo Shinwa Audit Corporation (predecessor of EY ShinNihon LLC) Jan 1985 Registered as Certified Public Accountant Served as Partner and Senior Partner, among other positions Jan 2013 Representative Director, EY Institute Co., Ltd. Jan 2019 onward Served as Audit & Supervisory Board Member and Director at major Japanese companies Jun 2025 Director, Audit and Supervisory Committee Member (Independent, Outside Director), NTT, Inc. (current) Director, Kirin Holdings Company, Limited and Sumitomo Mitsui Trust Holdings, Inc.