Repligen Executive and Leadership Team

October, 2026

Leadership Overview

Repligen has 5 executives leading key functions including strategy, information technology, financial management, operational scaling, and human resources.

Committed to advancing bioprocessing efficiency, Repligen delivers high-value solutions that accelerate the production of biologic drugs. This leadership team drives innovation across global life sciences markets to ensure superior manufacturing outcomes.

Leadership Roles at Repligen

  • Chief Executive Officer - Olivier Loeillot
  • Chief Financial Officer - Jason Garland
  • Chief Operating Officer - James Bylund
  • Chief Information Officer - Heather Ems
  • Vice President & Global Head of Human Resources - Leslie Galvin
  • Olivier Loeillot - Chief Executive Officer

    Olivier Loeillot, the Chief Executive Officer at Repligen, directs the overarching corporate strategy and long-term vision for the bioprocessing portfolio. By aligning product development with the evolving needs of biologic drug manufacturers, Loeillot ensures the company maintains a competitive edge in the global life sciences sector. This executive role involves constant engagement with the Board to refine market positioning and capital allocation. Olivier Loeillot oversees the integration of new technologies into the existing manufacturing ecosystem, fostering a culture of continuous improvement. Through rigorous analysis of industry trends, the Chief Executive Officer identifies growth opportunities that expand the reach of the firm. Loeillot maintains focus on delivering high-value solutions that address critical bottlenecks in drug production. Ultimately, the Chief Executive Officer secures the financial and operational health of the organization while driving sustainable expansion across international markets.
    Olivier Loeillot

    Jason Garland - Chief Financial Officer

    Jason Garland, the Chief Financial Officer at Repligen, manages the fiscal health and capital strategy of the organization. By overseeing financial planning, reporting, and investor relations, Garland ensures the company possesses the resources required to sustain its bioprocessing innovation pipeline. This leadership role involves rigorous monitoring of market performance and cost structures to maximize shareholder value. Jason Garland directs the allocation of capital toward high-growth areas, supporting the development of flexible solutions for biologic drug production. Through precise financial forecasting and risk management, the Chief Financial Officer provides the stability needed for long-term strategic initiatives. Garland collaborates with the executive team to evaluate potential acquisitions and partnerships that strengthen the market position of the firm. By maintaining strict financial discipline, the Chief Financial Officer enables the company to navigate complex economic environments while continuing to invest in critical manufacturing technologies.
    Jason Garland

    James Bylund - Chief Operating Officer

    James Bylund, the Chief Operating Officer at Repligen, executes the manufacturing and supply chain strategies that define the operational success of the company. By focusing on the production of high-value bioprocessing components, Bylund ensures that global demand for biologic drug manufacturing tools is met with precision and quality. This leadership role involves optimizing internal workflows and scaling production capacity to accommodate rapid market growth. James Bylund oversees the integration of lean manufacturing principles across all facilities, reducing waste and improving throughput. Through constant coordination with the leadership team, the Chief Operating Officer aligns operational output with the strategic goals of the organization. Bylund drives initiatives that enhance product reliability and delivery timelines for customers worldwide. By maintaining a robust and agile supply chain, the Chief Operating Officer supports the mission of providing flexible solutions that address the most critical steps in the production of biologic drugs.
    James Bylund

    Heather Ems - Chief Information Officer

    Heather Ems, the Chief Information Officer at Repligen, architects the digital infrastructure necessary to support complex bioprocessing operations. By implementing advanced data analytics and secure enterprise systems, Ems optimizes the flow of information across global manufacturing sites. This leadership role requires close collaboration with other C-suite members to ensure that digital tools align with the broader mission of accelerating biologic drug production. Heather Ems manages the cybersecurity framework and IT governance, protecting intellectual property while enabling seamless cross-functional communication. Through the deployment of scalable cloud solutions, the Chief Information Officer enhances operational transparency and decision-making speed. Ems drives the digital transformation agenda, ensuring that the company remains at the forefront of technological innovation within the life sciences industry. By modernizing internal processes, the Chief Information Officer supports the overall efficiency and reliability of the entire supply chain.
    Heather Ems

    Leslie Galvin - Vice President & Global Head of Human Resources

    Leslie Galvin, the Vice President & Global Head of Human Resources at Repligen, directs the talent acquisition and organizational development strategies that fuel the company. By fostering a culture of innovation and excellence, Galvin ensures that the workforce possesses the expertise required to advance bioprocessing technologies. This leadership role involves designing comprehensive programs for employee engagement, performance management, and leadership development. Leslie Galvin collaborates with the executive team to align human capital initiatives with the broader business objectives of the firm. Through the implementation of global talent strategies, the Vice President & Global Head of Human Resources supports the expansion of operations across diverse geographic regions. Galvin drives initiatives that promote diversity, equity, and inclusion, strengthening the organizational foundation. By prioritizing the growth and well-being of the team, the Vice President & Global Head of Human Resources enables the company to maintain its status as a leader in the life sciences industry.

    Frequently Asked Questions Regarding Repligen Top Executives and Leadership Team

    Who leads Repligen?
    Repligen is led by Olivier Loeillot (Chief Executive Officer), along with executives such as Jason Garland (Chief Financial Officer) and James Bylund (Chief Operating Officer).
    Who is part of Repligen’s executive team?
    The executive team of Repligen includes leaders such as Olivier Loeillot (Chief Executive Officer), Jason Garland (Chief Financial Officer), James Bylund (Chief Operating Officer) and other senior executives.
    How many executives does Repligen have?
    Repligen has 5 executives leading key business areas.
    What roles are included in Repligen’s leadership team?
    The leadership team of Repligen includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, Chief Information Officer, Vice President & Global Head of Human Resources.