Kyowa Kirin Executive and Leadership Team

October, 2026

Leadership Overview

Kyowa Kirin has 4 executives leading key functions including executive operations, clinical development, strategic medical affairs, and human capital management.

Driven by a commitment to antibody research, Kyowa Kirin advances therapeutic solutions in nephrology and oncology to improve patient outcomes globally through innovative engineering.

Leadership Roles at Kyowa Kirin

  • Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer - Yohei Yamazoe
  • Head of Global Clinical Operations Chief of Staff - Chizu Sato
  • Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs - Kristen Stevens Sickle
  • Global Chief People Officer, Corporate Planning Head - Shoko Itagaki
  • Yohei Yamazoe - Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer

    Yohei Yamazoe, the Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer at Kyowa Kirin, manages high-level administrative workflows and strategic alignment between top leadership. Yamazoe facilitates communication across the executive suite, ensuring that corporate objectives in antibody research remain prioritized. By coordinating complex projects, the Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer optimizes decision-making processes for the entire organization. Yohei Yamazoe monitors operational efficiency, providing critical support for the execution of global pharmaceutical initiatives. This role involves synthesizing data from various departments to inform the long-term vision of the company. Through rigorous oversight of internal communications and executive priorities, the Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer maintains organizational focus on delivering specialized medical treatments to patients worldwide while supporting the broader mission of the firm.

    Chizu Sato - Head of Global Clinical Operations Chief of Staff

    Chizu Sato, the Head of Global Clinical Operations Chief of Staff at Kyowa Kirin, directs the execution of international clinical trials and research protocols. Sato oversees the integration of clinical data across diverse therapeutic areas, including nephrology and immunology. By managing cross-functional teams, the Head of Global Clinical Operations Chief of Staff ensures compliance with global regulatory standards while accelerating the development of antibody-based therapies. Chizu Sato coordinates resource allocation to support large-scale clinical programs, driving efficiency in the drug development pipeline. This leadership position requires constant collaboration with research scientists and external partners to maintain the integrity of clinical studies. Through the implementation of standardized operational procedures, the Head of Global Clinical Operations Chief of Staff facilitates the transition of innovative research into viable patient treatments. Sato secures the operational success of global clinical initiatives, directly impacting the company's ability to address unmet medical needs.

    Kristen Stevens Sickle - Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs

    Kristen Stevens Sickle, the Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs at Kyowa Kirin, architects the strategic direction for medical affairs within the North American market. Sickle drives the implementation of initiatives that bridge clinical research with patient care requirements. By aligning regional medical strategies with global corporate goals, the Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs ensures that therapeutic advancements reach target populations effectively. Kristen Stevens Sickle manages complex stakeholder relationships, fostering collaboration between medical teams and commercial operations. This role involves analyzing market trends to refine the delivery of specialized pharmaceutical solutions. Through the oversight of strategic planning, the Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs optimizes the impact of medical programs, supporting the expansion of the company's footprint in the competitive North American pharmaceutical landscape.

    Shoko Itagaki - Global Chief People Officer, Corporate Planning Head

    Shoko Itagaki, the Global Chief People Officer, Corporate Planning Head at Kyowa Kirin, directs human capital strategy and long-term corporate planning. Itagaki designs organizational structures that support the company's focus on antibody research and engineering. By fostering a culture of innovation, the Global Chief People Officer, Corporate Planning Head ensures that talent acquisition and development align with the evolving needs of the pharmaceutical industry. Shoko Itagaki integrates corporate planning with workforce management to drive sustainable growth across global operations. This leadership role involves collaborating with the executive team to define the company's future trajectory and operational priorities. Through the implementation of comprehensive talent management programs, the Global Chief People Officer, Corporate Planning Head enhances organizational agility. Itagaki maintains a focus on building high-performing teams capable of delivering complex medical solutions, ensuring that the workforce remains equipped to meet the challenges of the global healthcare market.

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    Frequently Asked Questions Regarding Kyowa Kirin Top Executives and Leadership Team

    Who leads Kyowa Kirin?
    Kyowa Kirin is led by Yohei Yamazoe (Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer), along with executives such as Chizu Sato (Head of Global Clinical Operations Chief of Staff) and Kristen Stevens Sickle (Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs).
    Who is part of Kyowa Kirin’s executive team?
    The executive team of Kyowa Kirin includes leaders such as Yohei Yamazoe (Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer), Chizu Sato (Head of Global Clinical Operations Chief of Staff), Kristen Stevens Sickle (Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs) and other senior executives.
    How many executives does Kyowa Kirin have?
    Kyowa Kirin has 4 executives leading key business areas.
    What roles are included in Kyowa Kirin’s leadership team?
    The leadership team of Kyowa Kirin includes roles such as Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer, Head of Global Clinical Operations Chief of Staff, Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs, Global Chief People Officer, Corporate Planning Head.