Apr 2006 Joined Rakuten, Inc. (now Rakuten Group, Inc.) Apr 2015 Founded Town WiFi Inc. (now GMO Town WiFi Inc.) Representative Director (current) Nov 2019 Joined GMO Internet Group, Inc. as a group member Mar 2025 Representative Director, Vice President, GMO Research & AI, Inc. (now GMO Product Platform, Inc.) Apr 2025 Representative Director, President, GMO Research & AI, Inc. (now GMO Product Platform, Inc.) (current) Oct 2025 Representative Director, President, GMO Research & AI, Inc. (current) Nov 2025 Director, GMO PLEIAD Inc. (now GMO User Research Platform Inc.) (current) Jan 2026 Representative Director, President, STOCK POINT Inc. (now GMO STOCK POINT Inc.) (current)

May 1991 Representative Director, Voice Media Inc. (now GMO Internet Group, Inc.) Sep 1999 Representative Director, Magu Click Inc. (now GMO Internet, Inc.) Apr 2000 Director, Magu Click Inc. (now GMO Internet, Inc.) Aug 2001 Representative Director, Chairman, Eyeru Inc. (now GMO GlobalSign Holdings K.K.) Apr 2002 Director, Chairman, GMO Research Inc. (now GMO Product Platform, Inc.) (current) Mar 2003 Representative Director, Chairman and President, Global Media Online Inc. (now GMO Internet Group, Inc.) Director, Chairman, Eyeru Inc. (now GMO GlobalSign Holdings K.K.) (current) Mar 2004 Director, Chairman, paperboy&co. Inc. (now GMO Pepabo, Inc.) (current) Director, Chairman, GMO Mobile & Desktop Inc. (now GMO Media, Inc.) (current) Dec 2004 Director, Chairman, CardCommerce Service Inc. (now GMO Payment Gateway, Inc.) Mar 2007 Director, Chairman, Magu Click Inc. (now GMO Internet, Inc.) May 2008 Representative Director, Chairman and President, Group Representative, GMO Internet, Inc. (now GMO Internet Group, Inc.) Dec 2011 Director, Chairman and President, GMO Payment Gateway, Inc. Dec 2012 Director, Chairman, GMO Payment Gateway, Inc. (current) Mar 2015 Director, GMO AdPartners, Inc. (now GMO Internet, Inc.) Mar 2016 Director, Chairman, GMO AdPartners, Inc. (now GMO Internet, Inc.) (current) Mar 2022 Representative Director, Group Representative, Chairman and President, Executive Officer and CEO, GMO Internet, Inc. (now GMO Internet Group, Inc.) (current) Oct 2025 Director, Chairman, GMO TECH Holdings, Inc. (current)

Oct 2001 Joined Chuo Aoyama Audit Corporation Apr 2005 Registered as Certified Public Accountant Sep 2006 Joined PwC Aarata LLC (now PwC Japan LLC) Aug 2008 Seconded to PwC Australia, Sydney Office Feb 2012 Seconded to PwC Consulting LLC Dec 2017 Director, CFO, JVCC Co., Ltd. Oct 2019 Joined GMO Research Inc. (now GMO Product Platform, Inc.), General Manager, Management Accounting Department Feb 2020 General Manager, Management Division, GMO Research Inc. (now GMO Product Platform, Inc.) Mar 2020 Director, General Manager, Management Division, GMO Research Inc. (now GMO Product Platform, Inc.) Jan 2021 Director, General Manager, Global Management Division, GMO Research Inc. (now GMO Product Platform, Inc.) Oct 2021 Director, GMO RESEARCH PVT. LTD. (now GMO-Z.COM RESEARCH PVT. LTD.) Mar 2024 Managing Director, General Manager, Global Management Division, GMO Research Inc. (now GMO Product Platform, Inc.) Mar 2025 Director, GMO Town WiFi Inc. (current) Senior Managing Director, General Manager, Global Management Division, GMO Research & AI, Inc. (now GMO Product Platform, Inc.) Apr 2025 Director, GMO-Z.COM RESEARCH USA, INC. (current) Director, GMO Research & AI Preparatory Company, Inc. (now GMO Research & AI, Inc.) Oct 2025 Senior Managing Director, GMO Research & AI, Inc. (current) Director, CFO, GMO Product Platform, Inc. (current) Jan 2026 Director, STOCK POINT Inc. (now GMO STOCK POINT Inc.) (current)

Mar 2022 Director, Group Vice President, Executive Officer and CFO, Group Representative Assistant, Head of Group Management Division, GMO Internet, Inc. (now GMO Internet Group, Inc.) Oct 2025 Director, GMO TECH Holdings, Inc. (current) Jan 2026 Director, Group Vice President, Executive Officer and CFO, Group Representative Assistant, GMO Internet Group, Inc. (current)

Apr 2000 Registered with Daiichi Tokyo Bar Association; joined Hasegawa Toshiaki Law Office Apr 2004 Joined Mitsui Yasuda Law Office Dec 2004 Joined Linklaters Law Office (now Linklaters Gaikokuho Jimu Bengoshi Jimusho) Apr 2006 Part-time Lecturer, Graduate School of Asia-Pacific Studies, Waseda University Jan 2007 Joined Allen & Gledhill LLP (Singapore) Dec 2007 Joined Linklaters LLP (London) Jun 2008 Joined Linklaters Gaikokuho Jimu Bengoshi Jimusho Jun 2009 Joined Atsumi Sogo Law Office, Foreign Joint Enterprise (now Atsumi & Sakai, Foreign Joint Enterprise) Dec 2010 Partner, Atsumi Sogo Law Office Aug 2011 External Member, Compliance Committee, TLC Township Co., Ltd. Mar 2014 Outside Director, GMO Research Inc. (now GMO Product Platform, Inc.) Apr 2017 External Member, Compliance Committee, Tokyu Fudosan REIT Management Co., Ltd. (current) Jun 2017 Outside Director, Astmax Co., Ltd. (current) Jun 2020 Outside Director (Audit and Supervisory Committee Member), Taiko Pharmaceutical Co., Ltd. Feb 2024 Representative, Hashimoto Sogo Law Office (current) Mar 2024 Senior Managing Director, Taiko Pharmaceutical Co., Ltd. (current) Mar 2026 Outside Director, Audit and Supervisory Committee Member, GMO Product Platform, Inc. (current)

Oct 1998 Joined Aoyama Audit Corporation May 2003 Registered as Certified Public Accountant Oct 2006 Joined PwC Aarata LLC (now PwC Japan LLC) Oct 2010 Established Tezuka Accounting Office (current) Mar 2024 Outside Auditor, GMO Research Inc. (now GMO Product Platform, Inc.) Mar 2025 Auditor, GMO Town WiFi Inc. (current) Apr 2025 Auditor, GMO Research & AI Preparatory Company, Inc. (now GMO Research & AI, Inc.) (current) Mar 2026 Outside Director, Audit and Supervisory Committee Member, GMO Product Platform, Inc. (current)

Apr 1989 Joined Daiwa Bank (now Resona Bank, Limited) Mar 1997 Completed master's program, Graduate School of Agricultural and Life Sciences, University of Tokyo (Agricultural and Resource Economics) Oct 2000 Deputy General Manager, Tokyo Second Business Division, Daiwa Bank (now Resona Bank, Limited) Mar 2005 Head of Corporate Sales, Shibuya Branch, Resona Bank, Limited Jul 2010 General Manager, Second Business Division, Toranomon Branch, Resona Bank, Limited Nov 2012 Joined GMO Internet, Inc. (now GMO Internet Group, Inc.), Manager, Group International Support Office Apr 2018 Head, Group International Support Office, GMO Internet, Inc. (now GMO Internet Group, Inc.) Dec 2021 Head, Real Estate Investment Management Office, GMO Internet, Inc. (now GMO Internet Group, Inc.) Jan 2023 Auditor, GMO Media, Inc. Feb 2023 Auditor, GMO Research Inc. (now GMO Product Platform, Inc.) Feb 2023 Auditor, GMO Research Inc. (now GMO Product Platform, Inc.) Mar 2023 Director, Audit and Supervisory Committee Member, GMO Internet Group, Inc. (current) Mar 2025 Director, Audit and Supervisory Committee Member, GMO Media, Inc. (current) Mar 2026 Outside Director, Audit and Supervisory Committee Member, GMO Product Platform, Inc. (current)