Dentsu Group Executive and Leadership Team

September, 2026

Leadership Overview

Dentsu Group has 6 executives leading key functions including strategy, operational oversight, financial management, regional market expansion, and corporate governance.

Focused on delivering integrated communication and business transformation services, Dentsu Group empowers global brands through data-driven marketing solutions and comprehensive digital consulting across diverse international markets.

Leadership Roles at Dentsu Group

  • Director, Representative Executive Officer & President & Global Chief Executive Officer - Hiroshi Igarashi
  • Chief Executive Officer, Greater Bay Area - Simone Tam
  • Financiero Chief Financial Officer & Director - Sergio Leyton
  • Director, Executive Officer & Global Chief Financial Officer - Shigeki Endo
  • Ninth President - Yutaka Narita
  • Deputy Director - Toshiyuki Baba
  • Hiroshi Igarashi - Director, Representative Executive Officer & President & Global Chief Executive Officer

    Hiroshi Igarashi, the Director, Representative Executive Officer & President & Global Chief Executive Officer at Dentsu Group, directs the overarching strategic vision for the entire global organization. Overseeing operations across the Americas, Europe, and Asia Pacific, Igarashi architects the long-term growth trajectory for integrated communication services. This leadership role involves aligning diverse regional teams with the core mission of providing end-to-end business transformation. By prioritizing data-driven marketing solutions, the Director, Representative Executive Officer & President & Global Chief Executive Officer ensures the company maintains a competitive edge in the advertising sector. Hiroshi Igarashi maintains constant communication with the Board to refine corporate governance standards. Through rigorous oversight of global market research and content creation initiatives, Igarashi drives operational excellence. This executive leadership ensures that the firm consistently delivers high-value branding and media planning services to clients worldwide, solidifying the market position of the organization.

    Simone Tam - Chief Executive Officer, Greater Bay Area

    Simone Tam, the Chief Executive Officer, Greater Bay Area at Dentsu Group, drives the regional strategy and market penetration within the Asia Pacific territory. Overseeing the delivery of integrated communication services, Tam architects localized marketing solutions that resonate with specific regional consumer behaviors. This leadership role involves managing relationships with key clients and expanding the footprint of digital marketing and content creation services. By fostering innovation within the regional team, the Chief Executive Officer, Greater Bay Area ensures that the company remains a leader in business transformation. Simone Tam coordinates with global leadership to align regional outputs with the overarching corporate mission. Through the development of strategic partnerships, Tam enhances the market presence of the firm. This executive position requires a deep understanding of local market dynamics to effectively deploy advertising and public relations strategies. The Chief Executive Officer, Greater Bay Area consistently delivers growth by leveraging the unique strengths of the regional team.

    Sergio Leyton - Financiero Chief Financial Officer & Director

    Sergio Leyton, the Financiero Chief Financial Officer & Director at Dentsu Group, manages the global financial health and fiscal strategy of the organization. Overseeing capital allocation and investment planning, Leyton ensures that the company maintains the liquidity required for international expansion and digital transformation projects. This leadership role involves rigorous analysis of market research data to inform budgetary decisions across the Americas and Europe. By implementing robust financial controls, the Financiero Chief Financial Officer & Director mitigates risk while supporting the growth of advertising and media planning services. Sergio Leyton collaborates with the Board to report on financial performance and long-term value creation. Through the oversight of fiscal reporting and audit processes, Leyton guarantees transparency and regulatory compliance. This executive function directly impacts the ability of the firm to invest in cutting-edge data-driven marketing solutions, ultimately securing the financial future of the entire enterprise.

    Shigeki Endo - Director, Executive Officer & Global Chief Financial Officer

    Shigeki Endo, the Director, Executive Officer & Global Chief Financial Officer at Dentsu Group, oversees the global financial architecture and corporate treasury functions. Managing the financial strategy for operations across Japan and international markets, Endo ensures that the company maintains a strong balance sheet to support business consulting and advertising initiatives. This leadership role involves directing the financial planning and analysis teams to optimize profitability across all service lines. By monitoring global economic trends, the Director, Executive Officer & Global Chief Financial Officer provides the insights necessary for strategic decision-making. Shigeki Endo works with the executive team to allocate resources toward high-growth digital marketing and customer experience services. Through the management of investor relations and financial reporting, Endo maintains the trust of stakeholders. This executive function is essential for the long-term sustainability of the firm, as the Director, Executive Officer & Global Chief Financial Officer ensures that financial resources align with the core mission of the organization.
    Shigeki Endo

    Yutaka Narita - Ninth President

    Yutaka Narita, the Ninth President at Dentsu Group, provides historical continuity and strategic guidance to the executive leadership team. Overseeing the preservation of corporate culture and long-term brand equity, Narita ensures that the company remains true to the foundational principles of excellence in advertising and communication. This leadership role involves advising on major business transformation initiatives and supporting the integration of new digital marketing technologies. By leveraging deep industry knowledge, the Ninth President assists in navigating complex market shifts across the global landscape. Yutaka Narita collaborates with the current executive officers to ensure that the strategic direction remains consistent with the legacy of the firm. Through the mentorship of emerging leaders, Narita fosters a culture of innovation and professional growth. This executive position serves as a bridge between the rich history of the organization and the future of the industry, as the Ninth President helps guide the company toward continued success in the global marketplace.

    Toshiyuki Baba - Deputy Director

    Toshiyuki Baba, the Deputy Director at Dentsu Group, supports the executive leadership team by managing internal operational efficiency and organizational alignment. Overseeing the integration of public relations and sales promotion departments, Baba ensures that internal processes support the broader business consulting objectives. This role involves coordinating cross-functional teams to streamline service delivery across the Middle East and Africa. By optimizing resource allocation, the Deputy Director facilitates the execution of complex digital marketing campaigns. Toshiyuki Baba works closely with other senior leaders to implement structural improvements that enhance client satisfaction. This leadership position requires constant monitoring of market trends to adjust internal workflows accordingly. Through the management of key administrative functions, Baba secures the operational stability necessary for the company to provide high-quality advertising and media buying services. The Deputy Director remains focused on maintaining the high standards of service excellence expected by global clients.

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    Frequently Asked Questions Regarding Dentsu Group Top Executives and Leadership Team

    Who leads Dentsu Group?
    Dentsu Group is led by Hiroshi Igarashi (Director, Representative Executive Officer & President & Global Chief Executive Officer), along with executives such as Simone Tam (Chief Executive Officer, Greater Bay Area) and Sergio Leyton (Financiero Chief Financial Officer & Director).
    Who is part of Dentsu Group’s executive team?
    The executive team of Dentsu Group includes leaders such as Hiroshi Igarashi (Director, Representative Executive Officer & President & Global Chief Executive Officer), Simone Tam (Chief Executive Officer, Greater Bay Area), Sergio Leyton (Financiero Chief Financial Officer & Director) and other senior executives.
    How many executives does Dentsu Group have?
    Dentsu Group has 6 executives leading key business areas.
    What roles are included in Dentsu Group’s leadership team?
    The leadership team of Dentsu Group includes roles such as Director, Representative Executive Officer & President & Global Chief Executive Officer, Chief Executive Officer, Greater Bay Area, Financiero Chief Financial Officer & Director, Director, Executive Officer & Global Chief Financial Officer, Ninth President.