Kyowa Kirin Executive and Leadership Team

September, 2026

Leadership Overview

Kyowa Kirin has 6 executives leading key functions including strategic initiatives, clinical operations, marketing, executive management, regional operations, and human resources.

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

Leadership Roles at Kyowa Kirin

  • Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer - Yohei Yamazoe
  • President & General Manager - Tatsuru Iwamoto
  • Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs - Kristen Stevens Sickle
  • Head of Global Clinical Operations Chief of Staff - Chizu Sato
  • Senior Analyst, Chief Marketing Officer (Contract Manufacturing) SCM - Jean Compton
  • 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, facilitates seamless communication and decision-making between top-tier leadership. Yamazoe architects the operational agenda that guides the company's strategic direction in nephrology and oncology. By synthesizing complex data from various departments, the Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer ensures that executive leadership remains informed on critical performance indicators. This role involves managing high-stakes projects that require cross-departmental cooperation and alignment with the corporate vision. Yohei Yamazoe drives the implementation of organizational policies that enhance efficiency and agility across the global enterprise. The Senior Chief of Staff for the Chief Executive Officer and the Chief Operating Officer monitors the progress of key initiatives, providing the necessary support to ensure that the Chief Executive Officer and the Chief Operating Officer achieve their long-term growth targets while maintaining the company's commitment to societal health.

    Tatsuru Iwamoto - President & General Manager

    Tatsuru Iwamoto, the President & General Manager at Kyowa Kirin, directs the overall business strategy and operational performance of the organization. Iwamoto architects the long-term vision for the company, focusing on the expansion of antibody research and engineering capabilities. By overseeing the integration of regional operations, the President & General Manager ensures that the company maintains a strong competitive position in the global pharmaceutical market. This leadership role involves setting the tone for corporate culture and driving the pursuit of excellence in therapeutic innovation. Tatsuru Iwamoto manages the allocation of capital and resources to support high-impact research programs in immunology and neurology. The President & General Manager fosters collaboration with the Board and executive team to navigate complex regulatory environments and market challenges. Through decisive leadership, Iwamoto secures the company's future growth, ensuring that all business activities remain firmly anchored in the mission to address the needs of patients and society.

    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, directs high-level operational alignment across the North American medical landscape. Sickle architects complex strategic frameworks that integrate antibody research advancements into regional clinical practice. By coordinating cross-functional teams, the Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs ensures that medical affairs objectives remain synchronized with broader corporate goals. This leadership role involves managing critical stakeholder relationships and optimizing resource allocation to support the company's oncology and immunology portfolios. Kristen Stevens Sickle drives the execution of initiatives that enhance the visibility of specialty pharmaceutical products within the competitive North American market. Through rigorous oversight of internal processes, the Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs maintains operational excellence while fostering innovation in patient-centric care delivery across the region.

    Chizu Sato - Head of Global Clinical Operations Chief of Staff

    Chizu Sato, the Head of Global Clinical Operations Chief of Staff at Kyowa Kirin, manages the end-to-end execution of international clinical trials. Sato oversees the complex infrastructure required to validate antibody-based therapies across diverse therapeutic areas. By aligning clinical development timelines with global regulatory requirements, the Head of Global Clinical Operations Chief of Staff ensures the efficient progression of the pharmaceutical pipeline. This role involves constant collaboration with research teams to translate engineering breakthroughs into actionable clinical data. Chizu Sato drives the standardization of operational protocols to maintain high quality and safety benchmarks across all global sites. The Head of Global Clinical Operations Chief of Staff monitors performance metrics to identify bottlenecks in trial recruitment and data collection. Through strategic resource management, Sato secures the necessary support for large-scale clinical programs, ultimately accelerating the delivery of life-changing treatments to patients worldwide while maintaining strict adherence to international pharmaceutical standards.

    Jean Compton - Senior Analyst, Chief Marketing Officer (Contract Manufacturing) SCM

    Jean Compton, the Senior Analyst, Chief Marketing Officer (Contract Manufacturing) SCM at Kyowa Kirin, directs the commercial strategy for contract manufacturing services. Compton architects market positioning frameworks that highlight the company's unique antibody engineering capabilities to external partners. By analyzing supply chain dynamics and market demand, the Senior Analyst, Chief Marketing Officer (Contract Manufacturing) SCM optimizes the value proposition for manufacturing collaborations. This leadership role involves bridging the gap between technical production capacity and commercial growth objectives. Jean Compton drives the development of outreach programs that expand the footprint of the company's manufacturing expertise in the global pharmaceutical sector. The Senior Analyst, Chief Marketing Officer (Contract Manufacturing) SCM ensures that all marketing initiatives align with the overarching corporate mission of addressing unmet medical needs. Through data-driven insights, Compton identifies emerging opportunities for partnership, securing long-term revenue streams while maintaining the high quality standards synonymous with the Kyowa Kirin brand.

    Shoko Itagaki - Global Chief People Officer, Corporate Planning Head

    Shoko Itagaki, the Global Chief People Officer, Corporate Planning Head at Kyowa Kirin, directs the human capital strategy and long-term organizational planning. Itagaki architects talent development programs that support the company's specialized pharmaceutical workforce. By aligning corporate planning with workforce capabilities, the Global Chief People Officer, Corporate Planning Head ensures that the organization possesses the expertise required to advance antibody research. This leadership role involves cultivating a culture of innovation and inclusivity that attracts top-tier scientific and operational talent. Shoko Itagaki drives the implementation of performance management systems that reward excellence and foster professional growth. The Global Chief People Officer, Corporate Planning Head collaborates with other executives to ensure that organizational structure supports the company's strategic objectives in nephrology and oncology. Through strategic workforce planning, Itagaki secures the human resources necessary to sustain global operations, ensuring that the company remains a leader in the pharmaceutical industry while prioritizing the well-being and development of every employee.

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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 Tatsuru Iwamoto (President & General Manager) 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), Tatsuru Iwamoto (President & General Manager), 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 6 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, President & General Manager, Chief of Staff To Senior Vice President. Head of Strategic Initiatives, North America Medical Affairs, Head of Global Clinical Operations Chief of Staff, Senior Analyst, Chief Marketing Officer (Contract Manufacturing) SCM.