SEPTENI

  1. TOP
  2. About Us
  3. Executives

Executives

Directors

  • Yuichi Kouno

    Representative Director Yuichi Kouno

    Career Summary

    2006 Joined the Company
    2014 Officer of Third Account Division, SEPTENI CO., LTD.
    2015 Officer of Second Account Division, Septeni Japan, Inc.
    2017 Officer and General Manager of Second Account Division, Septeni Japan, Inc.
    2018 Group Executive Officer, SEPTENI HOLDINGS CO., LTD.
    Representative Director, SEPTENI CO., LTD.
    Representative Director, Septeni Japan, Inc.
    2022 Group Senior Executive Officer, SEPTENI HOLDINGS CO., LTD.
    Outside Director, and factory,inc.
    Director, Dentsu Digital Inc.
    2024 Representative Director, Group President and Chief Executive Officer, SEPTENI HOLDINGS CO., LTD. (current position)
    Reasons for Appointment of Directors

    Mr. Yuichi Kouno has extensive experience and results, and considerable insight in the Group’s Digital Marketing Business and new businesses, and because he is expected to play appropriate roles and exercise strong leadership on the Company’s further growth, business expansion and all aspects of business administration, he is deemed necessary for enhancing corporate value.

  • Yusuke Shimizu

    Director Yusuke Shimizu

    Career Summary

    2006 Joined the Company
    2014 Officer of Media Solutions Division, SEPTENI CO., LTD.
    2015 Officer of Media Growth Division, Septeni Japan, Inc.
    2017 Officer and General Manager of Media Division, Septeni Japan, Inc.
    2018 Group Executive Officer, SEPTENI HOLDINGS CO., LTD.
    Representative Director and President, SEPTENI CO., LTD. (current position)
    Representative Director and President, Septeni Japan, Inc. (current position)
    2022 Group Senior Executive Officer, SEPTENI HOLDINGS CO., LTD
    2024 Director, Group Executive Vice President and Executive Officer, SEPTENI HOLDINGS CO., LTD. (current position)
    Reasons for Appointment of Directors

    Mr. Yusuke Shimizu has extensive experience and results, and considerable insight in the Group’s Digital Marketing Business as well as operational experience in the field of corporate planning, and because he is expected to drive the management of the Group and further enhance and drive corporate governance, he is deemed necessary for enhancing corporate value.

  • 石川 善樹

    Outside Director Yoshiki Ishikawa

    Career Summary

    2008 Director, Cancer Scan Co., Ltd.
    2014 Director, Campus for H Inc.
    2018 Representative Director, Well-being for Planet Earth Foundation (current position)
    2019 Outside Director (Audit & Supervisory Committee Member), Sansan, Inc.
    External Director, Gaiax Co.Ltd. (current position)
    Outside Director, SEPTENI HOLDINGS CO., LTD. (current position)
    2024 Representative Director and President, Unson, Inc. (current position)
    Reasons for Appointment of Outside Directors

    Mr. Yoshiki Ishikawa has professional, extensive experience and results, and considerable insight as both a preventive medicine researcher and as a founder of a company using methods based on behavioral science, and because he has actively provided useful advice on all aspects of the business administration of the Group, he is deemed capable of providing oversight and advice on the Company’s business administration as an outside director.

  • 入山 章栄

    Outside Director Akie Iriyama

    Career Summary

    1998 Joined Mitsubishi Research Institute, Inc.
    2008 Assistant Professor, University at Buffalo, the State University of New York
    2013 Associate Professor, Business School, Waseda University
    2016 Outside Director, Macromill, Inc.
    2019 Professor, Business School, Waseda University (current position)
    Outside Director, ROHTO Pharmaceutical Co., Ltd. (current position)
    2020 Outside Director, Sanoh Industrial Co., Ltd. (current position)
    Outside Director, SEPTENI HOLDINGS CO., LTD. (current position)
    2021 Outside Director (Audit & Supervisory Committee Member), SORACOM, INC. (current position)
    Reasons for Appointment of Outside Directors

    Mr. Akie Iriyama has operational experience as a consultant, along with professional, extensive experience and results and considerable insight as a researcher specialized in the management strategies and the global management fields, and because he has actively provided useful advice on all aspects of the business administration of the Group, he is deemed capable of providing oversight and advice on the Company’s business administration as an outside director.

  • 髙岡 美緒

    Outside Director Mio Takaoka

    Career Summary

    1999 Joined Goldman Sachs Japan Securities
    2002 Joined Morgan Stanley Japan Securities (currently Morgan Stanley MUFG Securities Co., Ltd.)
    2006 Joined Lehman Brothers Japan Securities
    2009 Joined Monex Group, Inc.
    2014 Executive, General Manager of new business, Monex Group, Inc.
    Director, Monex Ventures, Inc.
    2017 Joined MedicalNote, Inc.
    Partner, Arbor Ventures
    2018 Director, MedicalNote, Inc.
    2020 Outside Director, SEPTENI HOLDINGS CO., LTD. (current position)
    2021 Outside Director, KAYAC Inc.
    Partner, DNX Ventures
    Outside Director, HENNGE K.K. (current position)
    2022 Outside Director, DENTSU SOKEN INC. (formerly Information Services International-Dentsu, Ltd.) (current position)
    Outside Director (Audit & Supervisory Committee Member), KAYAC Inc.
    2025 Venture Partner, DNX Ventures (current position)
    Reasons for Appointment of Outside Directors

    Ms. Mio Takaoka has professional, extensive experience and results, and considerable insight of strategic investment, new business development and finance, and because she has actively provided useful advice on all aspects of the business administration of the Group, she is deemed capable of providing oversight and advice on the Company’s business administration as an outside director.

  • Makoto Shiono

    Outside Director Makoto Shiono

    Career Summary

    1998 Joined Citibank, N.A., Tokyo Branch
    1999 Joined Goldman Sachs Japan Co., Ltd., Tokyo Branch
    2000 Joined Members Co., Ltd. (seconded to EC-watch.com Co., Ltd. as CFO)
    2001 Joined Bain & Company Inc.
    2003 Joined livedoor Co., Ltd
    2008 Joined Industrial Growth Platform, Inc.
    2012 Partner/Managing Director, Industrial Growth Platform Inc.
    2017 Executive Managing Director, CIO, JBIC IG Partners
    2018 External Director, NewsPicks, Inc.
    Director, JB Nordic Ventures Oy
    2020 Outside Director, beBit, Inc. (current position)
    2022 Outside Director, INCLUSIVE, INC. (current position)
    2024 Outside Director, SEPTENI HOLDINGS CO., LTD. (current position)
    Partner/CLO, IGPI Group, Inc. (current position)
    Managing Director, Industrial Growth Platform Inc.
    2025 Auditor, Third Intelligence, Inc. (current position)
    Chief Executive Officer, Industrial Growth Platform Inc. (current position)
    Reasons for Appointment of Directors

    Mr. Makoto Shiono has extensive experience and results, and considerable insight in strategic planning and implementation consulting and M&A advisory services for domestic and foreign companies and government agencies, and because he has actively provided useful advice on all aspects of the business administration of the Group, he is deemed capable of providing oversight and advice on the Company’s business administration as an outside director.

  • Mitsuyuki Nakakmura

    Director Mitsuyuki Nakakmura

    Career Summary

    1990 Joined Dentsu Inc. (currently Dentsu Group Inc.)
    2008 General Manager of the Television Network Division 3, Dentsu Inc.
    2010 CEO, Dentsu Media Thailand (seconded, based in Bangkok)
    2015 MD, Dentsu Media APAC (seconded, based in Bangkok)
    2017 Managing Director of the Global Business Center, Dentsu Inc. (currently Dentsu Group Inc.)
    2019 Global CEO, dentsu X (seconded, based in London)
    2021 Managing Director of the Business Produce Division, Dentsu Inc.
    2022 Executive Officer, Dentsu Inc.
    Outside Director, BS-TBS, INC. (current position)
    Director, J-WAVE, Inc. (current position)
    2023 Director, Dentsu Sports International Inc. (current position)
    2024 President, Media,Sports/Entertainment, dentsu Japan
    Senior Executive Officer (Media & Content), Dentsu Inc.
    2025 President, Media/Sports & Entertainment, dentsu Japan (current position)
    Senior Executive Officer (Media/Sports & Entertainment), Dentsu Inc. (current position)
    Chair, Media Committee, Japan Advertising Agencies Association (current position)
    2026 Director, Dentsu Digital Inc. (current position)
    Director, SEPTENI HOLDINGS CO., LTD. (current position)
    Reasons for Appointment of Directors

    After joining Dentsu Inc. (currently Dentsu Group Inc.) in 1990, Mr. Mitsuyuki Nakamura held key positions across media, overseas, and sales divisions, accumulating extensive operational and management experience. He currently serves as President, Media / Sports & Entertainment at dentsu Japan, overseeing the media business of dentsu Japan, including digital advertising. Inlight of our expectation that he will provide valuable advice on over all Group management and contribute to advancing collaboration with the Dentsu Group.

Auditors

  • Tadahiro Mouri

    Outside Auditor (Full-time) Tadahiro Mouri

    Career Summary

    1980 Joined Taiyo Fishery Co., Ltd. (currently Umios Corporation)
    2012 General Manager of Administration Department, Maruha Nichiro Foods, Inc. (currently Umios Corporation)
    2014 General Manager of Logistics Department, Maruha Nichiro Corporation (currently Umios Corporation)
    General Manager of Risk Management Department, Umios Corporation
    2018 Advisor, DAITO GYORUI CO., LTD
    Director (Full-time Audit & Supervisory Committee Member), DAITO GYORUI CO., LTD
    2020 Outside Auditor (Full-time), SEPTENI HOLDINGS CO., LTD. (current position)
    Reasons for Appointment of Directors

    Mr. Tadahiro Mouri has considerable insight and extensive operational experience of auditing, and because he has provided useful advice and conducted auditing from an independent position, he is deemed capable of properly carrying out the duties of company auditor.

  • Mamoru Furushima

    Outside Auditor Mamoru Furushima

    Career Summary

    1993 Joined Chuo Audit Corporation
    1997 Registered as a certified public accountant
    2000 Joined the Fuji Accounting Office
    2003 Joined PwC Advisory Co., Ltd.
    2007 Joined the Legal Training and Research Institute of Japan under the Supreme Court of Japan
    2008 Registered as a lawyer (Tokyo Bar Association)
    2009 Joined Okuno & Partners
    2015 Representative, Furushima Law & Accounting Office
    Outside Director (Audit & Supervisory Committee Member), Nippon Chemical Industrial Co., Ltd.
    Outside Auditor, SEPTENI HOLDINGS CO., LTD. (current position)
    2020 Outside Director (Audit & Supervisory Committee Member), B-Lot Company Limited (current position)
    Outside Audit & Supervisory Board Member, SECURE, INC. (current position)
    2021 Representative Partner, Trident Lawyer Corporation (current position)
    2024 Outside Director (Audit & Supervisory Committee Member), Wel-Dish. Incorporated (current position)
    Reasons for Appointment of Directors

    Mr. Mamoru Furushima has extensive experience and specialist knowledge as a certified public accountant and a lawyer and in-depth knowledge and experience of auditing, and because he has provided useful advice and conducted auditing from an independent position, he is deemed capable of properly carrying out the duties of outside company auditor. Although he has never been involved in corporate management other than serving as an outside officer, he is deemed capable of properly carrying out the duties of an outside company auditor of the Company for the reasons mentioned above.

  • Takeshi Okuyama

    Outside Auditor Takeshi Okuyama

    Career Summary

    2002 Joined the Legal Training and Research Institute of Japan under the Supreme Court
    2003 Registered as a lawyer (Daini Tokyo Bar Association)
    Joined Mori Hamada & Matsumoto
    2011 Partner, Mori Hamada & Matsumoto (current position)
    2014 Associate Professor, Waseda Law School
    2019 Outside Auditor, SEPTENI HOLDINGS CO., LTD. (current position)
    Reasons for Appointment of Directors

    Mr. Takeshi Okuyama has extensive experience and specialist knowledge as an attorney and in-depth knowledge of corporate governance, corporate legal affairs, and auditing, and because he has provided useful advice and conducted auditing from an independent position, he is deemed capable of properly carrying out the duties of outside company auditor. Although he has never been involved in corporate management other than serving as an outside officer, he is deemed capable of properly carrying out the duties of an outside company auditor of the Company for the reasons mentioned above.

  • Hideo Hatano

    Auditor Hideo Hatano

    Career Summary

    1994 Joined General Sekiyu K.K.
    2005 Credit Control Advisor of the Asia-Pacific region, ExxonMobil Yugen Kaisha
    2015 General Manager of Audit, GYXIS CORPORATION
    2016 Senior Manager of Integration Promotion and Group Management Preparation Office, TonenGeneral Sekiyu K.K. (currently ENEOS Corporation)
    Internal Audit Manager, Amazon Japan G.K.
    2019 Head of Japan Internal Audit Office, Nissan Motor Co., Ltd.
    2021 Chief Internal Auditor (Supervisor of Global Monozukuri and audit of Japan-ASEAN region), Nissan Motor Co., Ltd.
    2022 Executive Director of DJN Internal Audit Office, Dentsu Group Inc.
    Executive Director of Internal Audit Office, Dentsu Group Inc.
    2023 Executive Officer in charge of internal audit, dentsu Japan, Dentsu Group Inc.
    Supervisory Board Member, CARTA HOLDINGS, INC.
    2024 Group Management and Head of Internal Audit, Dentsu Group Inc.
    Auditor, SEPTENI HOLDINGS CO., LTD. (current position)
    2025 Group Management and Global Head of Internal Audit, Dentsu Group Inc. (current position)
    Reasons for Appointment of Directors

    Mr. Hideo Hatano has considerable insight and extensive operational experience of auditing, and he is deemed capable of properly carrying out the duties of company auditor by leveraging his experience of internal audits in multiple companies and expertise thereof.

Skill Matrix of Directors and Company Auditors

The Company has identified the skills required for the Board of Directors and Board of Auditors as follows, and aims to strengthen the oversight function of management by ensuring that both Boards collectively possess the necessary skills.

Corporate
Management		 Integrated
Marketing		 Human Capital /
Talent
Development		 Financial
Accounting /
Finance		 Corporate
Governance		 Sustainability
Directors
Yuichi Kouno○○○○○
Yusuke Shimizu○○○
Yoshiki Ishikawa○○○
Akie Iriyama○○○
Mio Takaoka○○○
Makoto Shiono○○○
Mitsuyuki Nakamura○○○
Auditors
Tadahiro Mouri○○○
Mamoru Furushima○○○
Takeshi Okuyama○○○
Hideo Hatano○○○

*Indicates skills and experience particularly expected from each candidate.

Skill item Definition Reason for selection
Corporate
Management		 Expertise in discussing and evaluating growth strategies, including key themes such as generative AI, as well as business portfolio management, with the aim of sustainably enhancing Group corporate value. Accurately evaluating the validity of the Group’s growth strategy and overseeing business portfolio management are required to achieve medium- to long-term corporate value enhancement.
Integrated
Marketing		 Expertise in overseeing business strategies that support client challenges by integrating online and offline channels with digital methods as the starting point, including the use of data and AI and the promotion of digital transformation (DX). As client challenges become more advanced and complex, an appropriate understanding of integrated marketing beyond the digital domain, along with evaluation and oversight of its execution, is required.
Human Capital /
Talent
Development		 Expertise in fostering entrepreneurship and organizational development toward the mission of “To inspire the world with entrepreneurship.” Maximizing human capital, which is the source of the Company’s value creation, and overseeing organizational strategies that contribute to achieving the mission are required.
Financial
Accounting /
Finance		 Specialized expertise in understanding financial statements based on International Financial Reporting Standards (IFRS), and in formulating, evaluating, and executing capital policies, including shareholder returns, growth investments, and M&A, that balance high growth and high returns. A deep understanding of IFRS-based financial conditions and the expertise to judge, evaluate, and execute the optimal balance of shareholder returns, growth investments, and M&A as capital policy are necessary to achieve both high growth and high returns.
Corporate
Governance		 Expertise in strengthening the board of directors’ oversight of business execution, with due consideration given to legal compliance, compliance frameworks, and the protection of minority shareholders. In particular, as a listed company with a parent company, building and overseeing a highly robust governance framework that gives due consideration to the protection of minority shareholders are required.
Sustainability Expertise in overseeing responses to material issues and the practice of social responsibility that contributes to enhancing corporate value. Addressing material issues and practicing social responsibility are essential to medium- to long-term corporate value enhancement.

Group Executive Officers

  • Yuichi Kouno

    Group President and Executive Officer(Group CEO) Yuichi Kouno

  • Yusuke Shimizu

    Gruop Executive Vice President and Execytive Officer Yusuke Shimizu

  • Isamu Ueno

    Group Executive Vice President and Executive Officer Isamu Ueno

  • Kei Hatano

    Group Senior Executive Officer Kei Hatano

  • Tei Go

    Group Senior Executive Officer Tei Go

  • Daisuke Suefuji

    Group Senior Executive Officer Daisuke Suefuji

  • Masayuki Takano

    Group Senior Executive Officer Masayuki Takano

  • Kazunari Kondo

    Group Senior Executive Officer Kazunari Kondo

  • Teruyuki Noguchi

    Group Senior Officer Teruyuki Noguchi

  • Shuhei Ezaki

    Group Senior Officer Shuhei Ezaki

  • Yoko Miyazaki

    Group Senior Officer Yoko Miyazaki

  • Norihisa Ashida

    Group Executive Officer Norihisa Ashida

  • Ryo Okubo

    Group Executive Officer Ryo Okubo

  • Takahiro Yamasaki

    Group Executive Officer Takahiro Yamasaki

  • Yuta Suzuki

    Group Executive Officer Yuta Suzuki

  • Masayuki Muto

    Group Senior Officer Masayuki Muto

  • Yusuke Fukuhara

    Group Executive Officer Yusuke Fukuhara