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Our People
Founder & Executive Chairman
Tomoko Namba is the Founder and Executive Chairman of DeNA. Namba served as the company's CEO since its founding in 1999 until June 2011. Prior to founding DeNA, she was a partner at McKinsey & Co. She obtained an MBA at Harvard Business School in 1990.
President & CEO
Shingo Okamura graduated from the Graduate School of Humanities and Sociology and Faculty of Letters at the University of Tokyo, and joined the Ministry of Posts and Telecommunications (currently the Ministry of Internal Affairs and Communications) in April 1995. In 2015 he took up the position of Senior Planning Officer in the Planning Division of the Postal Services Policy Department in the Information and Communication Bureau of the Ministry of Internal Affairs and Communications. He joined DeNA in April 2016, where he became the Representative Director & President of the Yokohama Stadium Co., Ltd. In October 2016 he was made the Representative Director & President of the Yokohama DeNA BayStars Baseball Club, Inc. In July 2017 he became an Executive Officer and Head of the Sports Business Unit for DeNA, and after becoming Managing Executive Officer, Chief Operating Officer (COO) and Chairman of Yokohama Stadium Co., Ltd. (present) in April 2019, he was then made Director and Chief Operating Officer (COO) in June 2019. As of April 2021, Okamura is the President & CEO (present).
Member of the Board
Jun Oi
Member of the Board, & Head of the Corporate Unit
Keigo Watanabe
Outside Director
Hiroyasu Asami
Outside Director
Haruo Miyagi
Outside Director
Masaya Kubota
Standing Corporate Auditor
Shinichi Koizumi
Corporate Auditor
Nobuko Inaba
Corporate Auditor
Atsuko Sato
Corporate Auditor
Hirohiko Imura
Group Executives
Head of the Office of The Board of Directors
Shimpei Sakurai
Head of the Enterprise Compliance & Risk Management Office
Nahoko Inamura
Deputy Head of the Corporate Unit
Nagisa Kuraoka
Head of the Corporate Communication Management Division, Corporate Unit
Megumi Uchino
Head of the Legal Affairs Division, Corporate Unit
Ryu Orikasa
Head of the Human Resources Unit
Keita Sugawara
Head of the CEO Office, & Deputy Head of the Human Resources Unit
Akira Kazahaya
Head of the Recruiting Strategy Dept., Human Resources Unit
Hayato Ishii
Head of the Game Service Business Unit
Tetsuya Iguchi
Deputy Head of the Game Service Business Unit
Ryo Watanabe
Deputy Head of the Game Service Business Unit
Shun Kawaguchi
Head of the Business Administration Dept., Game Service Business Unit
Eiji Ishizaki
Head of the Entertainment Development Business Unit
Naoki Minabe
Deputy Head of the Entertainment Business Development Unit
Choi Daewoo
Head of the Business Management Division, Entertainment Development Business Unit
Shota Tanaka
Head of the Open Platform Management Division
Nobuaki Sato
Head of the Sports & Smart City Business Unit
Masahide Tsushima
Head of the Planning Division, Sports & Smart City Business Unit
Yoshihiro Takeda
Head of the Yokohama Development Office, Sports & Smart City Business Unit
Yusuke Tsuchida
Head of the Kawasaki Development Office, Sports & Smart City Business Unit
Nobuo Motozawa
Representative Director & President, YOKOHAMA DeNA BAYSTARS BASEBALL CLUB, INC.
Yota Kimura
Managing Director & Head of Baseball Operations, YOKOHAMA DeNA BAYSTARS BASEBALL CLUB, INC.
Tatsuhiro Hagiwara
Director & Head of Business Operations, YOKOHAMA DeNA BAYSTARS BASEBALL CLUB, INC.
Hiroyuki Hayashi
Representative Director, Yokohama Stadium Co., Ltd.
Kenso Fujii
Head of the Live Community Business Unit, & Representative Director & President, IRIAM Inc.
Shinya Masuda
Head of the Risk Management and Compliance Dept., Live Community Business Unit
Mitsuru Takei
Head of the Pococha Service Division, Live Community Business Unit
Daisuke Mizuta
Head of Global Engineering, Pococha
Jaysu Jeyachandran
Director & Head of the Platform Division, IRIAM Inc.
Ko Manabe
Head of the Healthcare Business Unit, & Representative Director, DATA HORIZON CO., LTD.
Sho Segawa
Deputy Head of the Healthcare Business Unit
Yoshiyuki Towata
Deputy Head of the Healthcare Business Unit
Kotaro Ito
Head of the CEO Office, & Deputy Head of the Data Health Division, DATA HORIZON CO., LTD.
Taro Akaishi
Head of the Industry Division, DATA HORIZON CO., LTD.
Akiko Hatakama
Head of the Corporate Planning Division, DATA HORIZON CO., LTD.
Tomohiro Matsuda
Head of the Medical Business Unit, & Representative Director & President, Allm Inc.
Takaaki Otani
Deputy Head of the Medical Business Unit, & Director & CAO, Allm Inc.
Kazunori Matsumoto
Director, CGIO, & Chief Economist, Allm Inc.
Toshio Oya
Representative Director & President, Nippontect Systems Co., Ltd.
Tomoyuki Namatame
Head of the AI Innovation Business Unit
Seiichiro Sumiyoshi
Head of the Product Development Division, AI Innovation Business Unit
Ryuji Harimoto
Head of the External Partnerships & Alliances Division
Takahiro Kunori
Head of the Business Development Office
Takeshi Matsui
Head of the Solution Unit, & Director, Deputy President, COO, & CTO, Allm Inc.
Kenta Sugahara
Deputy Head of the Solution Unit, & Head of the Enterprise Business Division
Yoichiro Watanabe
Deputy Head of the Solution Unit & Head of the Alliance Business Division, Solution Unit
Takatomo Okitsu
Head of the Customer Success Division, Solution Unit
Hiroyasu Mimura
Head of the IT Unit
Shunichi Kaneko
Head of the AI & Data Strategy Division, IT Unit
Yusuke Kamo
Head of the IT Platform Dept., IT Unit
Noboru Torigoe
Chief Health Officer
Kuniaki Miyake
Chief
Chief Economist
Toshio Oya
(Updated Apr. 16, 2025)
