NTT DOCOMO Executive and Leadership Team

August, 2026

Leadership Overview

NTT DOCOMO has 10 executives leading key functions including strategy, operations, finance, technology, and legal affairs.

Focused on advancing global telecommunications, NTT DOCOMO delivers robust wireless internet and LTE networks while pioneering NFC infrastructure to connect millions of users across diverse digital landscapes.

Leadership Roles at NTT DOCOMO

  • President & Chief Executive Officer - Kimihiro Okubo
  • Chief Financial Officer - Anna Karen
  • Chief Financial Officer & Executive Vice President - Hirotaka Sato
  • Senior Executive Vice President, Chief Financial Officer & Chief Human Capital Officer - Natsuko Fujiki
  • President - Simone Ranucci
  • President - Seishi Tsukuda
  • President's Office - Katsutoshi Ozawa
  • Chief of Staff - Daisuke Inoue
  • Senior Executive Vice President, Chief Technology Officer, Chief AI Officer, Chief Information Officer, Chief Information Security Officer - Hisakazu Tsuboya
  • Chief Legal Officer - Tsutomu Abe
  • Kimihiro Okubo - President & Chief Executive Officer

    Kimihiro Okubo, the President & Chief Executive Officer at NTT DOCOMO, directs the overarching corporate strategy for wireless internet and LTE telephone network expansion. By aligning internal resources with the evolving demands of the telecommunications sector, the President & Chief Executive Officer ensures that NTT DOCOMO maintains a competitive edge in the Japanese market. This leadership role involves constant collaboration with the Board to refine long-term growth objectives and operational efficiency. Kimihiro Okubo monitors the deployment of NFC infrastructure services to guarantee seamless user experiences across all platforms. Through rigorous oversight of market trends, the President & Chief Executive Officer drives innovation in mobile connectivity. By prioritizing sustainable infrastructure development, the executive secures the company's position as a leader in the telecommunications industry. Ultimately, Okubo fosters a culture of excellence that supports the delivery of high-quality services to consumers.

    Anna Karen - Chief Financial Officer

    Anna Karen, the Chief Financial Officer at NTT DOCOMO, oversees the fiscal health and capital allocation strategies necessary for maintaining extensive LTE telephone networks. By managing the financial planning and analysis for wireless internet services, the Chief Financial Officer ensures that investments in NFC infrastructure yield maximum returns. This leadership role involves rigorous monitoring of revenue streams and cost structures to support the company's long-term growth objectives. Anna Karen collaborates with other C-suite leaders to align financial resources with strategic technological advancements. Through the implementation of robust financial controls, the Chief Financial Officer mitigates risks associated with large-scale telecommunications projects. By optimizing the balance sheet, Karen strengthens the company's ability to fund future innovations. Ultimately, the Chief Financial Officer provides the fiscal stability required to sustain the company's market presence and deliver consistent value to stakeholders through efficient resource management.

    Hirotaka Sato - Chief Financial Officer & Executive Vice President

    Hirotaka Sato, the Chief Financial Officer & Executive Vice President at NTT DOCOMO, directs the financial strategy and executive oversight for the company's expansive telecommunications portfolio. By focusing on the monetization of wireless internet and LTE services, the Chief Financial Officer & Executive Vice President ensures that capital expenditures align with the company's core mission. This role involves managing complex financial reporting and investor relations to maintain transparency regarding the performance of NFC infrastructure services. Hirotaka Sato evaluates the economic viability of new market opportunities to drive sustainable revenue growth. Through the coordination of executive-level financial planning, the Chief Financial Officer & Executive Vice President supports the company's commitment to technological excellence. By analyzing market data, Sato identifies areas for operational improvement and cost reduction. Ultimately, the Chief Financial Officer & Executive Vice President secures the financial foundation necessary for the company to continue providing high-quality services to consumers.

    Natsuko Fujiki - Senior Executive Vice President, Chief Financial Officer & Chief Human Capital Officer

    Natsuko Fujiki, the Senior Executive Vice President, Chief Financial Officer & Chief Human Capital Officer at NTT DOCOMO, manages the intersection of financial performance and organizational talent development. By overseeing the budget for wireless internet and LTE network expansion, the Senior Executive Vice President, Chief Financial Officer & Chief Human Capital Officer ensures that the company attracts and retains the expertise required to maintain NFC infrastructure. This role involves designing compensation structures that incentivize innovation and operational efficiency across all departments. Natsuko Fujiki aligns human capital strategies with the company's financial goals to foster a high-performance culture. Through the integration of talent management and fiscal planning, the Senior Executive Vice President, Chief Financial Officer & Chief Human Capital Officer drives organizational growth. By monitoring workforce productivity, Fujiki optimizes the deployment of human resources. Ultimately, the Senior Executive Vice President, Chief Financial Officer & Chief Human Capital Officer ensures that the company remains well-positioned to meet the evolving demands of the telecommunications industry.

    Simone Ranucci - President

    Simone Ranucci, the President at NTT DOCOMO, leads the operational execution of regional initiatives focused on enhancing wireless internet accessibility. By driving the adoption of LTE telephone networks, the President ensures that the company meets the connectivity needs of diverse consumer segments. This role involves overseeing the implementation of localized service strategies that leverage the company's NFC infrastructure. Simone Ranucci coordinates with cross-functional teams to improve service delivery and customer satisfaction. Through the management of regional operations, the President supports the company's broader goal of maintaining a strong market presence. By analyzing regional performance metrics, Ranucci identifies opportunities for service optimization and growth. Ultimately, the President fosters operational excellence, ensuring that the company's telecommunications services are delivered efficiently and effectively to consumers across the target markets, thereby strengthening the company's overall competitive position in the telecommunications sector.

    Seishi Tsukuda - President

    Seishi Tsukuda, the President at NTT DOCOMO, directs the strategic development of consumer-facing telecommunication products and services. By focusing on the expansion of wireless internet and LTE telephone network offerings, the President ensures that the company remains responsive to changing consumer preferences. This role involves overseeing the integration of NFC infrastructure into new service packages to enhance user convenience. Seishi Tsukuda collaborates with marketing and product development teams to launch innovative solutions that drive market penetration. Through the management of product lifecycles, the President supports the company's mission of providing high-quality connectivity. By monitoring consumer feedback, Tsukuda refines service offerings to maintain high levels of customer loyalty. Ultimately, the President drives the company's growth by ensuring that the product portfolio remains relevant and competitive in the fast-paced telecommunications industry, consistently delivering value to consumers through reliable and advanced service solutions.

    Katsutoshi Ozawa - President's Office

    Katsutoshi Ozawa, the President's Office at NTT DOCOMO, facilitates the strategic initiatives and executive communications originating from the office of the President. By coordinating the implementation of high-priority projects related to wireless internet and LTE network services, the President's Office ensures that the company's leadership vision is executed across all levels. This role involves managing the flow of information between the President and other senior executives to ensure alignment on key business objectives. Katsutoshi Ozawa supports the development of long-term plans for NFC infrastructure and other telecommunications services. Through the oversight of special projects, the President's Office drives organizational focus on critical growth areas. By maintaining a comprehensive view of the company's strategic landscape, Ozawa assists in the prioritization of resources. Ultimately, the President's Office enhances the effectiveness of the executive leadership team, ensuring that the company remains agile and focused on its core mission.

    Daisuke Inoue - Chief of Staff

    Daisuke Inoue, the Chief of Staff at NTT DOCOMO, manages the daily administrative operations and strategic coordination between executive departments. By streamlining communication channels, the Chief of Staff ensures that the vision for wireless internet and LTE network services remains consistent across all business units. This role requires meticulous attention to detail when organizing high-level meetings and tracking the progress of critical infrastructure projects. Daisuke Inoue facilitates the execution of corporate initiatives by removing operational bottlenecks and fostering cross-departmental synergy. Through the management of internal workflows, the Chief of Staff supports the broader mission of providing reliable telecommunication services to consumers. By maintaining clear lines of communication with the leadership team, Inoue optimizes the decision-making process. Ultimately, the Chief of Staff enhances organizational agility, allowing the company to respond rapidly to shifts in the competitive landscape of the telecommunications sector.

    Hisakazu Tsuboya - Senior Executive Vice President, Chief Technology Officer, Chief AI Officer, Chief Information Officer, Chief Information Security Officer

    Hisakazu Tsuboya, the Senior Executive Vice President, Chief Technology Officer, Chief AI Officer, Chief Information Officer, Chief Information Security Officer at NTT DOCOMO, architects the technological roadmap for wireless internet and LTE telephone networks. By integrating artificial intelligence into NFC infrastructure services, the Senior Executive Vice President, Chief Technology Officer, Chief AI Officer, Chief Information Officer, Chief Information Security Officer ensures that the company remains at the forefront of digital innovation. This role involves securing the information systems against emerging threats while optimizing network performance. Hisakazu Tsuboya leads the development of scalable cloud and data solutions that support the company's telecommunications services. Through the oversight of information security protocols, the Senior Executive Vice President, Chief Technology Officer, Chief AI Officer, Chief Information Officer, Chief Information Security Officer protects the integrity of consumer data. By driving technological advancements, Tsuboya enhances the reliability of the company's digital offerings. Ultimately, the Senior Executive Vice President, Chief Technology Officer, Chief AI Officer, Chief Information Officer, Chief Information Security Officer ensures that the company's infrastructure is both secure and future-ready.
    Hisakazu Tsuboya
    Tsutomu Abe, the Chief Legal Officer at NTT DOCOMO, manages the regulatory compliance and legal frameworks governing wireless internet and LTE telephone network operations. By providing counsel on the deployment of NFC infrastructure services, the Chief Legal Officer ensures that all business activities adhere to national and international telecommunications laws. This role involves negotiating complex contracts and protecting the company's intellectual property rights. Tsutomu Abe collaborates with the executive team to mitigate legal risks associated with market expansion and technological integration. Through the oversight of corporate governance, the Chief Legal Officer maintains the company's reputation for ethical conduct. By monitoring legislative changes, Abe proactively adjusts the company's legal strategy to ensure continued compliance. Ultimately, the Chief Legal Officer provides the necessary legal safeguards to support the company's mission of delivering reliable telecommunication services to consumers while navigating the complexities of the regulatory environment.

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    Frequently Asked Questions Regarding NTT DOCOMO Top Executives and Leadership Team

    Who leads NTT DOCOMO?
    NTT DOCOMO is led by Kimihiro Okubo (President & Chief Executive Officer), along with executives such as Anna Karen (Chief Financial Officer) and Hirotaka Sato (Chief Financial Officer & Executive Vice President).
    Who is part of NTT DOCOMO’s executive team?
    The executive team of NTT DOCOMO includes leaders such as Kimihiro Okubo (President & Chief Executive Officer), Anna Karen (Chief Financial Officer), Hirotaka Sato (Chief Financial Officer & Executive Vice President) and other senior executives.
    How many executives does NTT DOCOMO have?
    NTT DOCOMO has 10 executives leading key business areas.
    What roles are included in NTT DOCOMO’s leadership team?
    The leadership team of NTT DOCOMO includes roles such as President & Chief Executive Officer, Chief Financial Officer, Chief Financial Officer & Executive Vice President, Senior Executive Vice President, Chief Financial Officer & Chief Human Capital Officer, President.