Executive Team
Masayuki Yamakawa
Representative Director and CEO
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1989B.M., Faculty of Medicine, Tottori University
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1993Founded Seishin Plastic and Aesthetic Surgery Clinic Co., Ltd. (Retired)
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2007Founded THE CLINIC Tokyo (Retired)
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2015Founded SerialIncubate Co., Ltd. (Incumbent Representative Director)
Founded CellSource Co., Ltd. (Retired) -
2016Founded Tokyo Knee Osteoarthritis Clinic (Retired)
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2022Director, CellSource Co., Ltd.
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2024Chairman of the Board, CellSource Co., Ltd.
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2025Representative Chairman of the Board, CellSource Co., Ltd.
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2025Representative Director and CEO (Incumbent), CellSource Co., Ltd.
Tomohiro Iga
Director and CFO
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1994Graduated from the Faculty of Commerce and Management, Hitotsubashi University
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1994Joined The Long-Term Credit Bank of Japan, Limited(currently known as SBI Shinsei Bank, Limited)
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2003Joined Kiacon Corporation
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2005Joined Revamp Corporation
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2014Joined Fourth Valley Concierge Corporation
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2017Director, Fourth Valley Concierge Corporation
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2021Joined amana inc.
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2023Director and CFO, amana inc.
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2024Joined CellSource Co., Ltd
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2024Executive Officer and General Manager of Corporate Division, CellSource Co., Ltd.
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2026Director and CFO, General Manager of Corporate Division (incumbent), CellSource Co., Ltd.
Takeshi Amemiya
Director (Full-time Audit & Supervisory Committee Member)
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1986Graduated from the Faculty of Economics, Kyoto University
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1986Joined ITOCHU Corporation
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1999Joined Japan Online Securities Co., Ltd.
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2008CFO & Executive Director, kabu.com Securities Co., Ltd. (Mitsubishi UFJ e-Smart Securities Co., Ltd.)
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2017CFO & Director, CellSource Co., Ltd.
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2023Director (Full-time Audit & Supervisory Committee Member) (Incumbent), CellSource Co., Ltd.
Tsuneyasu Ozaki
External Director (Audit & Supervisory Committee Member)
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1994The Legal Training and Research Institute of Japan
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1996Public Prosecutor Appointment
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1997Fukuoka District Public Prosecutors Office
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1999Special Investigation Department, Tokyo District Public Prosecutors Office
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2003Administrative Litigation Division, Litigation Bureau, Ministry of Justice
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2004Office of Administrative Procedure, Planning and Coordination Division, Administrative Management Bureau, Ministry of Internal Affairs and Communications
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2005Resignation from the Prosecutors Office/Attorney Registration
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2008Partner, Nishimura & Asahi (now Nishimura & Asahi, Foreign Law Joint Enterprise)
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2014External Auditor (Incumbent), Tosoh Corporation
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2019Audit & Supervisory Board Member, CellSource Co., Ltd.
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2023External Director (Audit & Supervisory Committee Member) (Incumbent), CellSource Co., Ltd.
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2025OZAKI BUSINESS LAW OFFICE Attorney at Law (Incumbent)
Yoshitake Kamino
External Director (Audit & Supervisory Committee Member)
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1992Graduated from the Faculty of Letters, Hokkaido University
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1995Joined Chuo Audit Corporation
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1999Registered as a Certified Public Accountant
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2007Joined Ernst & Young ShinNihon (currently Ernst & Young ShinNihon LLC)
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2011Representative (Incumbent), Kamino Certified Public Accountant Office
Registered as a Certified Public Tax Accountant -
2012Representative Partner (Incumbent), Aoyama Access Tax Corporation
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2016External Corporate Auditor (Incumbent), No.1 Co., Ltd.
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2017External Corporate Auditor (Incumbent), Energy Product Co., Ltd.
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2024External Corporate Auditor (Incumbent), JU Gifu Hashima Auto Auction Co., Ltd.
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2025External Corporate Auditor (Incumbent), Lightworks Corporation
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2026Outside Director (Audit and Supervisory Committee Member) (Incumbent), CellSource Co., Ltd.