Regeneron Executive and Leadership Team

July, 2026

Leadership Overview

Regeneron has 6 executives leading key functions including strategy, science, operations, human resources, and regulatory affairs.

Driven by scientific innovation, Regeneron is dedicated to discovering, developing, and commercializing life-changing medicines for serious diseases, leveraging advanced science and proprietary technologies to address unmet medical needs globally.

Leadership Roles at Regeneron

  • Board co-Chair, President & Chief Executive Officer - Leonard Schleifer
  • Co-Chair, President & Chief Executive Officer - Leonard Schleifer
  • Co-Founder, Board Co-Chair, President & Chief Scientific Officer - George Yancopoulos
  • Head Operations Strategy, To Chief of Staff & Executive VP, Regulatory, Patient Safety & Quality - Kim Brenner
  • Strategic HR Business Partner & To Chief of Staff & Vice President, Human Resources - Erin Rohr
  • Executive Assistant To the Chief Human Resources Officer - Wrechelle Nantes
  • Leonard Schleifer - Board co-Chair, President & Chief Executive Officer

    Leonard Schleifer, the Board co-Chair, President & Chief Executive Officer at Regeneron, directs the company's overarching strategy and commercialization efforts. Schleifer guides the organization's mission to discover, develop, and bring to market innovative medicines for serious diseases. This leadership role involves setting the strategic vision for Regeneron's pipeline and ensuring alignment across all business units to achieve market success. By focusing on advanced science and proprietary technologies, Schleifer drives the company's commitment to creating life-changing treatments. The Chief Executive Officer's responsibilities include fostering a culture of innovation and operational excellence, crucial for addressing complex health challenges in areas like cancer, eye diseases, and inflammatory disorders. Leonard Schleifer's executive oversight ensures that Regeneron maintains its position at the forefront of biotechnology, translating scientific breakthroughs into tangible patient benefits and sustained market impact.
    Leonard Schleifer

    Leonard Schleifer - Co-Chair, President & Chief Executive Officer

    Leonard Schleifer, the Co-Chair, President & Chief Executive Officer at Regeneron, spearheads the company's strategic direction and operational execution. Schleifer's leadership ensures the effective translation of Regeneron's scientific discoveries into commercially viable treatments for severe illnesses. This executive position involves overseeing all aspects of the business, from research and development to market access, driving the company's commitment to innovation. The Chief Executive Officer's focus remains on advancing Regeneron's proprietary technologies to tackle conditions such as cancer, eye diseases, and rare disorders. By championing a forward-thinking approach, Leonard Schleifer cultivates an environment where scientific rigor meets commercial acumen, ultimately aiming to deliver transformative therapies to patients worldwide and solidify Regeneron's impact in the biotechnology sector.
    Leonard Schleifer

    George Yancopoulos - Co-Founder, Board Co-Chair, President & Chief Scientific Officer

    George Yancopoulos, the Co-Founder, Board Co-Chair, President & Chief Scientific Officer at Regeneron, leads the company's pioneering scientific research and development efforts. Yancopoulos directs the discovery and advancement of novel therapeutic approaches, driving Regeneron's commitment to creating life-changing medicines for severe and rare diseases. This executive role is central to translating cutting-edge science and proprietary technologies into tangible treatments for conditions such as cancer, eye diseases, and inflammatory disorders. The Chief Scientific Officer's vision guides the research pipeline, ensuring a continuous flow of innovative therapies. Under George Yancopoulos's scientific leadership, Regeneron consistently pushes the boundaries of biotechnology, fostering an environment of discovery that aims to profoundly impact global health and patient outcomes.

    Kim Brenner - Head Operations Strategy, To Chief of Staff & Executive VP, Regulatory, Patient Safety & Quality

    Kim Brenner, the Head Operations Strategy, To Chief of Staff & Executive VP, Regulatory, Patient Safety & Quality at Regeneron, manages critical operational strategies and ensures the highest standards in regulatory compliance, patient safety, and quality assurance. Brenner's role involves developing and implementing strategic initiatives that enhance operational efficiency across the organization, directly supporting the company's mission to deliver life-changing medicines. This executive leadership position requires a deep understanding of complex regulatory landscapes and a commitment to safeguarding patient well-being throughout the drug development and commercialization lifecycle. Overseeing patient safety and quality functions, Kim Brenner ensures that Regeneron's treatments meet stringent global standards. The executive VP's strategic input is vital for aligning operational processes with Regeneron's scientific advancements and market objectives, reinforcing the company's dedication to ethical and effective healthcare solutions.

    Erin Rohr - Strategic HR Business Partner & To Chief of Staff & Vice President, Human Resources

    Erin Rohr, the Strategic HR Business Partner & To Chief of Staff & Vice President, Human Resources at Regeneron, drives human capital strategies that support the company's growth and innovation in biotechnology. Rohr's responsibilities encompass aligning HR initiatives with Regeneron's core mission of developing transformative medicines for serious diseases. This executive role involves partnering with leadership to foster a high-performance culture, attract and retain top scientific and operational talent, and ensure robust employee development programs. The Vice President of Human Resources plays a key part in shaping the employee experience, crucial for maintaining Regeneron's competitive edge in research and development. Erin Rohr's strategic HR insights contribute directly to operational effectiveness and the overall success of Regeneron's efforts to bring life-changing treatments to patients globally.

    Wrechelle Nantes - Executive Assistant To the Chief Human Resources Officer

    Wrechelle Nantes, the Executive Assistant To the Chief Human Resources Officer at Regeneron, provides essential support to the human resources leadership, facilitating the smooth execution of HR strategies and operations. Nantes's role is integral to ensuring that the human resources department effectively supports Regeneron's mission of developing innovative medicines for serious diseases. This position involves managing complex administrative functions, coordinating executive communications, and supporting initiatives aimed at talent acquisition, employee engagement, and organizational development. The executive assistant's meticulous attention to detail and organizational skills are critical for maintaining efficiency within the HR function. Wrechelle Nantes's contributions directly enable the Chief Human Resources Officer to focus on strategic priorities, thereby reinforcing Regeneron's commitment to scientific advancement and patient well-being.

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    Frequently Asked Questions Regarding Regeneron Top Executives and Leadership Team

    Who leads Regeneron?
    Regeneron is led by Leonard Schleifer (Board co-Chair, President & Chief Executive Officer), along with executives such as Leonard Schleifer (Co-Chair, President & Chief Executive Officer) and George Yancopoulos (Co-Founder, Board Co-Chair, President & Chief Scientific Officer).
    Who is part of Regeneron’s executive team?
    The executive team of Regeneron includes leaders such as Leonard Schleifer (Board co-Chair, President & Chief Executive Officer), Leonard Schleifer (Co-Chair, President & Chief Executive Officer), George Yancopoulos (Co-Founder, Board Co-Chair, President & Chief Scientific Officer) and other senior executives.
    How many executives does Regeneron have?
    Regeneron has 6 executives leading key business areas.
    What roles are included in Regeneron’s leadership team?
    The leadership team of Regeneron includes roles such as Board co-Chair, President & Chief Executive Officer, Co-Chair, President & Chief Executive Officer, Co-Founder, Board Co-Chair, President & Chief Scientific Officer, Head Operations Strategy, To Chief of Staff & Executive VP, Regulatory, Patient Safety & Quality, Strategic HR Business Partner & To Chief of Staff & Vice President, Human Resources.