Aug 2001 Established Unou Co., Ltd.; Representative Director Feb 2005 Changed trade name of Unou Co., Ltd. to Unou Inc. Sep 2010 General Manager, Zynga Japan Co., Ltd. Jun 2012 Established suadd Co., Ltd.; Representative Director (current) Feb 2013 Established Kozo Co., Ltd. (now Mercari, Inc.); Representative Director, President Mar 2014 Director, Mercari, Inc. (current) Apr 2017 Representative Director, Chairman and CEO, Mercari, Inc. Sep 2019 Representative Director, CEO (President), Mercari, Inc. Jul 2021 Representative Director, Shintaro Yamada D&I Foundation (now Public Interest Incorporated Foundation) (current) Sep 2023 Director and Representative Executive Officer, CEO (President), Mercari, Inc. (current) Jan 2025 CEO, Mercari, Inc.

Apr 2003 Joined Daiwa Securities SMBC Co., Ltd. (now Daiwa Securities Co., Ltd.) Dec 2006 Joined MIXI, Inc. Jun 2008 Director, MIXI, Inc. Dec 2013 Joined Mercari, Inc. Mar 2014 Director, Head of Corporate Division, Mercari, Inc. Apr 2017 Director, President and COO, Head of Corporate Division, Mercari, Inc. Aug 2019 Representative Director, President, Kashima Antlers F.C. Co., Ltd. (current) Sep 2019 Director, President (Chairman), Mercari, Inc. (current) Mar 2022 Part-time Board Member, Japan Professional Football League (J.League) (current)

Apr 2006 Joined Goldman Sachs Securities Co., Ltd. Nov 2017 Managing Director, Goldman Sachs Securities Co., Ltd. Jan 2021 Executive Officer, CFO, Mercari, Inc. Jan 2021 Director, Merpay Inc. (current) Jul 2022 Executive Officer, VP of Corporate and CFO, Mercari, Inc. Jan 2023 Senior Executive Officer, SVP of Corporate and CFO, Mercari, Inc. Sep 2023 Director and Executive Officer, SVP of Corporate and CFO, Mercari, Inc. (current)

Sep 1991 Joined Deloitte & Touche LLP Oct 1995 Joined J.P. Morgan Securities Co., Ltd. (now JPMorgan Securities Japan Co., Ltd.) Mar 2003 General Manager, Internal Audit Department, JPMorgan Securities Japan Co., Ltd. Jun 2007 Head of Compliance Testing Group, Asia Region, JPMorgan Securities Japan Co., Ltd. Mar 2013 Head of Compliance and Risk Assessment, Asia Region, JPMorgan Securities Japan Co., Ltd. Sep 2013 Executive Officer, Chief Administrative Officer and Compliance Officer, Standard & Poor's Ratings Japan Co., Ltd. (now S&P Global Ratings Japan, Inc.) Jan 2019 Executive Officer, Head of Internal Audit Office, Mercari, Inc. Sep 2019 Full-time Audit & Supervisory Board Member, Mercari, Inc. Sep 2019 Audit & Supervisory Board Member, Merpay Inc. Apr 2021 Audit & Supervisory Board Member, Mercoin, Inc. Sep 2023 Director, Mercari, Inc. (current) Jun 2024 Outside Director (Audit and Supervisory Committee Member), ENEOS Holdings, Inc. (current)

Apr 1991 Joined The Long-Term Credit Bank of Japan, Ltd. (now SBI Shinsei Bank, Limited) Sep 1998 Joined McKinsey & Company, Inc. Japan Oct 2002 Joined Novartis Pharma K.K. Jul 2007 General Manager, Corporate Planning, Nestle Nutrition K.K. Dec 2008 Director and CFO, Tokyo Itoi Shigesato Office Co., Ltd. (now Hobonichi Co., Ltd.) Mar 2020 Director, Yell Inc. (current) Sep 2020 Outside Director, Mercari, Inc. (current) Jun 2026 Outside Director (Audit and Supervisory Committee Member), M3, Inc. (current)

Sep 2012 Joined Rakuten, Inc. (now Rakuten Group, Inc.) Apr 2013 Executive Officer, Head of Behavioral Insight Strategy Office, Planning Division, Rakuten, Inc. Sep 2017 Director, Rakuten Data Marketing, Inc. Sep 2018 Co-founder and Board Member, Well-being for Planet Earth (current) Jan 2019 Managing Executive Officer, CDO, Technology Division, Rakuten, Inc. Aug 2023 President and Director, QuEra Computing Inc. (current) Sep 2023 Outside Director, Mercari, Inc. (current) Nov 2024 Representative Director, President, QuEra Computing Japan Co., Ltd. (current)

Apr 1985 Joined Boston Consulting Group K.K. Apr 1986 Participated in establishing Corporate Direction Inc. Apr 2001 President and Representative Director, Corporate Direction Inc. Apr 2007 CEO and Representative Director, Industrial Growth Platform, Inc. (IGPI) Jun 2016 Outside Director, Panasonic Corporation (now Panasonic Holdings Corporation) Jun 2017 Outside Director, Tokyo Electric Power Company Holdings, Inc. Oct 2020 Chairman, IGPI Group, Industrial Growth Platform, Inc. (current) Dec 2020 President and Representative Director, Japan Co-Creation Platform Inc. (current) May 2022 Chairman, Japan Institute of Directors (current) Jun 2023 Outside Director, Kuroda Precision Industries Ltd. Sep 2023 Outside Director, Mercari, Inc. (current)

Oct 2002 Joined Tohmatsu Audit Corporation (now Deloitte Touche Tohmatsu LLC), Tokyo Office May 2006 Registered as Certified Public Accountant Jul 2006 Representative, Umezawa CPA Office (now Mayumi Umezawa CPA Office) (current) May 2007 Joined McDonald's Co. (Japan), Ltd. Feb 2012 Finance Manager, Disney Store Division, Walt Disney Japan Ltd. Jul 2016 Director, Management Accounting Lab Inc. (current) Jul 2016 Representative Director, Management Accounting Lab Inc. Jul 2016 Outside Audit & Supervisory Board Member, Retty Inc. Dec 2017 Outside Director (Audit and Supervisory Committee Member), Retty Inc. Nov 2019 Supervisory Officer, Japan Hotel REIT Investment Corporation Apr 2021 Outside Director, Wellness Communications Inc. Mar 2022 Outside Director (Audit and Supervisory Committee Member), Royal Holdings Co., Ltd. (current) Sep 2024 Outside Director, Mercari, Inc. (current)

Apr 1991 Registered as Attorney, Dai-Ichi Tokyo Bar Association Jun 2005 Audit & Supervisory Board Member, Yahoo Japan Corporation (now LY Corporation) Mar 2008 Audit & Supervisory Board Member, Advanced Soft Materials Inc. (now ASM Corporation) Jun 2014 Member, Gender Equality Promotion Headquarters, Japan Federation of Bar Associations (current) Aug 2014 Auditor, Japan Corporate Governance Network (NPO) Mar 2015 Shiho Konno Habataki Law Office (current) Jun 2015 Outside Director, Watami Co., Ltd. Jun 2016 Outside Director, Kakaku.com, Inc. Jun 2017 Outside Director, Alfresa Holdings Corporation Jun 2018 Outside Audit & Supervisory Board Member, Shinsei Bank, Limited (now SBI Shinsei Bank, Limited) Jun 2018 Outside Director, Monex Group, Inc. Jun 2021 Outside Director, LIXIL Group Corporation (current) Mar 2022 Outside Audit & Supervisory Board Member, Pegasus Tech Holdings Inc. (current) Sep 2024 Outside Director, Mercari, Inc. (current)

Apr 1991 Office Director, New York Office, Itochu Fashion Systems Co., Ltd. Apr 1995 Vice President, Marketing, Cygne Designs, Inc. Apr 1998 CEO, CYGNE INTERNATIONAL Dec 2002 Strategy Director, Link Theory Holdings Co., Ltd. Apr 2007 CEO, VPL Apr 2011 Chairperson, Fashion Girls for Humanity (current) Jan 2022 Co-founder, Yabbey Mar 2023 Trustee, Columbia University (current) Sep 2024 Outside Director, Mercari, Inc. (current)

Apr 1989 Joined Kokusai Investment Management Co., Ltd. Sep 1991 Joined Schroder Investment Management Japan Ltd. Apr 1995 Representative Director, I-Fis Co., Ltd. Jun 2004 Director, Investment Trusts Association, Japan (general incorporated association) Jun 2011 Public Member, Japan Securities Dealers Association (current) Jun 2013 Outside Director, Shizuoka Bank, Ltd. Aug 2013 Representative Director, Sophia Bank Co., Ltd. Jun 2014 Outside Director, Toyota Tsusho Corporation May 2016 Outside Director, Creek & River Co., Ltd. Oct 2018 Outside Director, NET PROTECTIONS HOLDINGS, Inc. Jan 2021 Outside Director, Cellsource Co., Ltd. Apr 2022 Chairperson, Institute for International Socioeconomic Studies (current) Oct 2022 Outside Director, Shizuoka Financial Group, Inc. (current) Jan 2023 Outside Director (Audit and Supervisory Committee Member), Cellsource Co., Ltd. Sep 2024 Outside Director, Mercari, Inc. (current) Jun 2025 Outside Director, Toyota Motor Corporation (current)

Sep 2004 Joined McKinsey & Company, Inc. Apr 2013 Associate Professor, Faculty of Business Administration, Ritsumeikan University Apr 2015 Outside Director, Appirits Inc. Mar 2016 Outside Audit & Supervisory Board Member, Uzabase, Inc. Apr 2016 Associate Professor, Faculty of Policy Management, Keio University Jun 2017 Outside Audit & Supervisory Board Member, Raksul Inc. Dec 2018 Outside Director, Euglena Co., Ltd. (current) Mar 2019 Outside Director (Audit and Supervisory Committee Member), Uzabase, Inc. Oct 2019 Outside Director (Audit and Supervisory Committee Member), Raksul Inc. Jun 2023 Outside Director (Audit and Supervisory Committee Member), SRE Holdings Corporation (current) Apr 2025 Professor, Faculty of Policy Management, Keio University (current) Sep 2025 Outside Director, Mercari, Inc. (current)