DeNA North America Executive and Leadership Team

June, 2026

Leadership Overview

DeNA North America has 7 executives leading key functions including strategy, operations, technology, people, and business development.

Driven by innovation, DeNA North America is dedicated to developing and operating a broad range of mobile and online services, aiming to delight and impact the world through the use of the internet and AI.

Leadership Roles at DeNA North America

  • Chief Executive Officer - Seiichiro Sumiyoshi
  • President & Chief Executive Officer - Denise Fobbs
  • President, Ydb 's Office F & B Strategy - Marina Kanki
  • Chief Technology Officer - Shuhei Kawasaki
  • Engineer - Chief Technology Officer Office - - Makoto Tsuyuki
  • Chief People Officer, At Pococha - Kaz Izumi
  • Member of the Board & Chief Operations Officer - Shingo Okamura
  • Seiichiro Sumiyoshi - Chief Executive Officer

    Seiichiro Sumiyoshi, the Chief Executive Officer at DeNA North America, directs the overarching strategy and operational execution for the company's diverse portfolio. This leadership encompasses guiding the development and deployment of mobile and online services across gaming, live streaming, entertainment, and healthcare sectors. Sumiyoshi ensures alignment with DeNA's global mission to impact the world through internet and AI technologies. The Chief Executive Officer's role involves fostering innovation and driving growth initiatives that enhance DeNA's market presence. By overseeing key strategic decisions, Seiichiro Sumiyoshi positions the company for sustained success and expansion in its target markets. This executive's focus remains on maximizing shareholder value and delivering exceptional user experiences through cutting-edge digital solutions.
    Seiichiro Sumiyoshi

    Denise Fobbs - President & Chief Executive Officer

    Denise Fobbs, the President & Chief Executive Officer at DeNA North America, spearheads the company's strategic vision and operational leadership within the North American region. This executive guides the expansion and refinement of DeNA's diverse service offerings, including games, live streaming, entertainment, and healthcare solutions. Fobbs drives initiatives that leverage internet and AI to create impactful user experiences and achieve business objectives. The President & Chief Executive Officer's responsibilities include fostering strategic partnerships and ensuring the successful integration of new technologies and services. By championing innovation, Denise Fobbs cultivates a dynamic environment that supports DeNA's mission to delight and impact the world. This leadership role is critical in navigating market complexities and securing long-term growth for the company's North American operations.

    Marina Kanki - President, Ydb 's Office F & B Strategy

    Marina Kanki, the President, Ydb 's Office F & B Strategy at DeNA North America, directs the strategic development and execution of food and beverage initiatives within the company's diversified business operations. This leadership role is crucial for identifying and capitalizing on market opportunities, ensuring that F&B strategies align with DeNA's broader mission to delight and impact the world through innovative services. Kanki oversees the planning and implementation of new ventures and the optimization of existing F&B operations, contributing to the company's overall growth and market presence. The President, Ydb 's Office F & B Strategy's focus includes fostering strategic partnerships and driving operational excellence within this specific business segment. Marina Kanki's expertise is vital for enhancing DeNA's portfolio and delivering unique value to consumers.

    Shuhei Kawasaki - Chief Technology Officer

    Shuhei Kawasaki, the Chief Technology Officer at DeNA North America, architects the technological roadmap and oversees all aspects of the company's digital infrastructure. This leadership position is central to driving innovation across DeNA's broad range of services, including games, live streaming, entertainment, and healthcare. Kawasaki ensures the robust development and deployment of scalable, high-performance platforms that support DeNA's mission to impact the world through internet and AI. The Chief Technology Officer's role involves managing engineering teams, guiding research and development efforts, and implementing advanced technological solutions. By focusing on cutting-edge advancements, Shuhei Kawasaki enhances the user experience and operational efficiency of DeNA's offerings. This executive's strategic direction is vital for maintaining a competitive edge in the rapidly evolving technology landscape.

    Makoto Tsuyuki - Engineer - Chief Technology Officer Office -

    Makoto Tsuyuki, the Engineer - Chief Technology Officer Office - at DeNA North America, contributes critical engineering expertise to the advancement of the company's technological initiatives. This role supports the Chief Technology Officer in developing and maintaining the robust infrastructure necessary for DeNA's diverse service portfolio, encompassing games, live streaming, entertainment, and healthcare. Tsuyuki's work is integral to ensuring the seamless operation and continuous improvement of platforms that leverage internet and AI technologies. The Engineer - Chief Technology Officer Office - focuses on implementing innovative solutions and optimizing system performance to align with DeNA's mission of impacting the world. By providing specialized technical skills, Makoto Tsuyuki plays a key part in driving technological excellence and supporting the company's strategic growth objectives.

    Kaz Izumi - Chief People Officer, At Pococha

    Kaz Izumi, the Chief People Officer, At Pococha at DeNA North America, leads human resources strategy and operations, focusing specifically on the Pococha live streaming service. This executive is responsible for cultivating a high-performance culture, attracting top talent, and developing comprehensive employee engagement programs that support DeNA's mission. Izumi ensures that people strategies align with the company's objectives of innovation and global impact through internet and AI. The Chief People Officer, At Pococha's role involves overseeing talent acquisition, organizational development, and employee relations to foster a productive and dynamic work environment. By prioritizing the well-being and professional growth of employees, Kaz Izumi drives organizational effectiveness and supports the sustained success of Pococha and DeNA North America.
    Kaz Izumi

    Shingo Okamura - Member of the Board & Chief Operations Officer

    Shingo Okamura, the Member of the Board & Chief Operations Officer at DeNA North America, oversees the company's operational efficiency and strategic implementation across its diverse business units. This leadership position is critical for ensuring the smooth execution of DeNA's services, including games, live streaming, entertainment, and healthcare, aligning with the company's aim to impact the world through internet and AI. Okamura drives initiatives to optimize resource allocation, enhance operational processes, and manage day-to-day business activities. The Member of the Board & Chief Operations Officer's responsibilities include fostering cross-functional collaboration and ensuring that operational strategies support long-term growth and profitability. By maintaining rigorous operational standards, Shingo Okamura contributes significantly to DeNA's market position and its commitment to delivering exceptional value.
    Shingo Okamura

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    Frequently Asked Questions Regarding DeNA North America Top Executives and Leadership Team

    Who leads DeNA North America?
    DeNA North America is led by Seiichiro Sumiyoshi (Chief Executive Officer), along with executives such as Denise Fobbs (President & Chief Executive Officer) and Marina Kanki (President, Ydb 's Office F & B Strategy).
    Who is part of DeNA North America’s executive team?
    The executive team of DeNA North America includes leaders such as Seiichiro Sumiyoshi (Chief Executive Officer), Denise Fobbs (President & Chief Executive Officer), Marina Kanki (President, Ydb 's Office F & B Strategy) and other senior executives.
    How many executives does DeNA North America have?
    DeNA North America has 7 executives leading key business areas.
    What roles are included in DeNA North America’s leadership team?
    The leadership team of DeNA North America includes roles such as Chief Executive Officer, President & Chief Executive Officer, President, Ydb 's Office F & B Strategy, Chief Technology Officer, Engineer - Chief Technology Officer Office -.