Daiichi Sankyo Executive and Leadership Team

July, 2026

Leadership Overview

Daiichi Sankyo has 6 executives leading key functions including finance, chief of staff, and president.

Driven by a commitment to patient well-being, Daiichi Sankyo develops innovative medicines and advanced drug discovery methods, impacting healthcare across over 30 countries.

Leadership Roles at Daiichi Sankyo

  • Chief of Staff To Chief Executive Officer - Kazuki Mori
  • Chief Financial Officer - Hiroyuki Okuzawa
  • Manager, Chief Financial Officer Planning Department - Chloe Stern
  • President - Suthas Thongprasert
  • Chief of Staff & Global System Owner - Kosuke Itagaki
  • Global Oncology Medical Affairs Chief of Staff - Caitlin Barnabo
  • Kazuki Mori - Chief of Staff To Chief Executive Officer

    Kazuki Mori, the Chief of Staff To Chief Executive Officer at Daiichi Sankyo, provides direct strategic support and operational coordination to the CEO. Managing critical initiatives and facilitating communication across executive levels, the Chief of Staff To Chief Executive Officer ensures seamless execution of corporate directives. This role involves streamlining decision-making processes and enhancing organizational efficiency, directly contributing to Daiichi Sankyo's global pharmaceutical operations. By acting as a key liaison, Kazuki Mori supports the CEO in navigating complex business challenges and advancing the company's mission. The Chief of Staff To Chief Executive Officer's responsibilities include project management for high-priority strategic programs and driving cross-functional alignment to achieve business objectives. This position is vital for maintaining the company's agile response to market dynamics and patient needs.

    Hiroyuki Okuzawa - Chief Financial Officer

    Hiroyuki Okuzawa, the Chief Financial Officer at Daiichi Sankyo, directs all financial operations and strategic fiscal planning. Overseeing global financial health, the Chief Financial Officer ensures robust capital allocation and manages investment portfolios to support the company's growth objectives. This leadership position involves rigorous budget management and financial forecasting, aligning fiscal strategies with Daiichi Sankyo's mission of delivering innovative medicines. By optimizing financial structures, Hiroyuki Okuzawa drives operational efficiency and secures long-term economic stability. The Chief Financial Officer's oversight extends to financial reporting and compliance, maintaining transparency and accountability across all fiscal activities. This role is critical for sustaining the company's market presence and enabling future research and development initiatives.
    Hiroyuki Okuzawa

    Chloe Stern - Manager, Chief Financial Officer Planning Department

    Chloe Stern, the Manager, Chief Financial Officer Planning Department at Daiichi Sankyo, spearheads financial planning and analysis initiatives. Directing departmental operations, the Manager, Chief Financial Officer Planning Department ensures accurate forecasting and budget adherence to support Daiichi Sankyo's global pharmaceutical development. This role involves meticulous data analysis and strategic financial modeling to inform executive decision-making. By optimizing resource allocation, Chloe Stern contributes to the efficient deployment of capital for research and development. The Manager, Chief Financial Officer Planning Department's focus on financial strategy supports the company's objective of delivering innovative medicines to patients worldwide. This position is integral to maintaining financial discipline and driving sustainable growth within the organization.

    Suthas Thongprasert - President

    Suthas Thongprasert, the President at Daiichi Sankyo, leads the overall strategic direction and operational execution of the company. Guiding global business development and market expansion, the President ensures Daiichi Sankyo's continued leadership in pharmaceutical innovation. This executive role involves overseeing all major business units and fostering a culture of scientific excellence and patient-centricity. By driving strategic partnerships and market penetration, Suthas Thongprasert enhances the company's global impact and revenue growth. The President's responsibilities include championing new drug discovery initiatives and ensuring the effective delivery of medicines to patients in over 30 countries. This position is fundamental to achieving Daiichi Sankyo's mission of improving global health outcomes.

    Kosuke Itagaki - Chief of Staff & Global System Owner

    Kosuke Itagaki, the Chief of Staff & Global System Owner at Daiichi Sankyo, orchestrates critical operational systems and provides executive-level strategic guidance. Managing the implementation and oversight of global IT infrastructure, the Chief of Staff & Global System Owner ensures technological alignment with Daiichi Sankyo's business objectives. This dual role involves driving system efficiency and supporting executive decision-making through data integrity. By leading system integration projects, Kosuke Itagaki enhances operational capabilities across the company's pharmaceutical services. The Chief of Staff & Global System Owner's responsibilities include ensuring system security and scalability to support patient-focused innovation. This position is essential for maintaining a robust technological backbone that enables Daiichi Sankyo's global reach and drug development pipeline.

    Caitlin Barnabo - Global Oncology Medical Affairs Chief of Staff

    Caitlin Barnabo, the Global Oncology Medical Affairs Chief of Staff at Daiichi Sankyo, directs strategic operations within the oncology medical affairs division. Coordinating key initiatives and ensuring alignment with global medical strategies, the Global Oncology Medical Affairs Chief of Staff supports the advancement of cancer therapies. This role involves managing cross-functional projects and facilitating communication between research teams and market access. By optimizing departmental workflows, Caitlin Barnabo enhances the efficiency of medical affairs operations, directly impacting Daiichi Sankyo's commitment to serving oncology patients. The Global Oncology Medical Affairs Chief of Staff's focus on strategic execution ensures the timely delivery of critical medical information and support for innovative treatments. This position is vital for driving progress in oncology research and patient care.

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    Frequently Asked Questions Regarding Daiichi Sankyo Top Executives and Leadership Team

    Who leads Daiichi Sankyo?
    Daiichi Sankyo is led by Kazuki Mori (Chief of Staff To Chief Executive Officer), along with executives such as Hiroyuki Okuzawa (Chief Financial Officer) and Chloe Stern (Manager, Chief Financial Officer Planning Department).
    Who is part of Daiichi Sankyo’s executive team?
    The executive team of Daiichi Sankyo includes leaders such as Kazuki Mori (Chief of Staff To Chief Executive Officer), Hiroyuki Okuzawa (Chief Financial Officer), Chloe Stern (Manager, Chief Financial Officer Planning Department) and other senior executives.
    How many executives does Daiichi Sankyo have?
    Daiichi Sankyo has 6 executives leading key business areas.
    What roles are included in Daiichi Sankyo’s leadership team?
    The leadership team of Daiichi Sankyo includes roles such as Chief of Staff To Chief Executive Officer, Chief Financial Officer, Manager, Chief Financial Officer Planning Department, President, Chief of Staff & Global System Owner.