Alexion Executive and Leadership Team

May, 2026

Leadership Overview

Alexion has 5 executives leading key functions including strategy, operations, revenue, and market development.

Driven by a commitment to patient well-being, Alexion focuses on developing transformative medicines for rare and devastating diseases, aiming to redefine treatment paradigms and improve lives globally.

Leadership Roles at Alexion

  • President - Patrice Coissac
  • Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development - Mackenzie Halter
  • Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer - Moh-Lim Ong
  • Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer - Sean Gorman
  • Chief Revenue Officer & Manager - Yi Su
  • Patrice Coissac - President

    Patrice Coissac, the President at Alexion, provides overarching leadership and strategic direction for the company's global operations. Coissac guides the executive team in executing Alexion's mission to discover, develop, and deliver innovative medicines for individuals affected by severe and life-threatening rare diseases. This executive role involves setting the strategic vision, fostering a culture of scientific excellence and patient-centricity, and ensuring robust financial performance. Overseeing all major business functions, Patrice Coissac drives initiatives that enhance Alexion's market leadership and expand its therapeutic reach. The President's leadership is pivotal in navigating the complexities of the biopharmaceutical industry and advancing the company's commitment to transforming the lives of patients worldwide through groundbreaking scientific advancements.

    Mackenzie Halter - Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development

    Mackenzie Halter, the Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development at Alexion, directs strategic initiatives and operational execution within critical development functions. Overseeing the integration of strategic planning with day-to-day operations, Halter ensures seamless alignment between development timelines and regulatory compliance. This leadership role involves managing cross-functional projects that enhance efficiency and accelerate the delivery of life-changing therapies for rare disorders. By optimizing resource allocation and streamlining processes, Mackenzie Halter supports the company's mission to bring innovative treatments to patients worldwide. The focus remains on driving operational excellence and fostering a culture of continuous improvement across the development pipeline, directly impacting Alexion's ability to address unmet medical needs.

    Moh-Lim Ong - Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer

    Moh-Lim Ong, the Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer at Alexion, spearheads integrated business planning and operational strategies for the medical office while also driving marketing initiatives. This dual focus ensures that medical insights inform commercial strategies and that operational frameworks support both functions effectively. Ong oversees the development and execution of comprehensive business plans, optimizing resource deployment to maximize impact. The Chief Marketing Officer responsibilities involve shaping Alexion's market presence and communicating the value of its specialized therapies to healthcare providers and patient communities. By bridging the gap between medical affairs and marketing, Moh-Lim Ong enhances the company's ability to reach and serve individuals affected by rare diseases, reinforcing Alexion's commitment to patient access and therapeutic innovation.

    Sean Gorman - Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer

    Sean Gorman, the Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer at Alexion, manages critical business planning and operational functions for the medical office, concurrently leading marketing efforts. Gorman's role integrates strategic operational oversight with the development and implementation of targeted marketing campaigns. This involves ensuring that business planning directly supports the medical office's objectives and that marketing strategies effectively communicate Alexion's therapeutic advancements. Overseeing operational efficiency, Gorman ensures that resources are allocated optimally to support both internal medical operations and external market engagement. As Chief Marketing Officer, Sean Gorman drives initiatives to expand awareness and adoption of Alexion's treatments for rare disorders, thereby advancing the company's mission to serve patient populations with significant unmet needs.

    Yi Su - Chief Revenue Officer & Manager

    Yi Su, the Chief Revenue Officer & Manager at Alexion, directs all revenue-generating activities and manages key business operations critical to financial growth. Su oversees the strategic planning and execution of sales initiatives, aiming to maximize market penetration and revenue streams for Alexion's portfolio of rare disease therapies. This leadership position involves close collaboration with commercial, medical, and operational teams to ensure cohesive strategies that drive sustainable revenue growth. The managerial aspect of the role ensures operational efficiency supports these revenue objectives. By focusing on market dynamics and customer needs, Yi Su works to expand access to Alexion's life-changing medicines, directly contributing to the company's financial health and its ability to invest in further research and development for severe, rare disorders.

    Explore Leadership Teams in Manufacturing

    Frequently Asked Questions Regarding Alexion Top Executives and Leadership Team

    Who leads Alexion?
    Alexion is led by Patrice Coissac (President), along with executives such as Mackenzie Halter (Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development) and Moh-Lim Ong (Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer).
    Who is part of Alexion’s executive team?
    The executive team of Alexion includes leaders such as Patrice Coissac (President), Mackenzie Halter (Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development), Moh-Lim Ong (Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer) and other senior executives.
    How many executives does Alexion have?
    Alexion has 5 executives leading key business areas.
    What roles are included in Alexion’s leadership team?
    The leadership team of Alexion includes roles such as President, Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development, Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer, Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer, Chief Revenue Officer & Manager.