Alexion Executive and Leadership Team

June, 2026

Leadership Overview

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

Dedicated to advancing patient care, Alexion focuses on developing transformative medicines for rare and devastating diseases, driving innovation in biopharmaceutical research and development.

Leadership Roles at Alexion

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

    Patrice Coissac, the President at Alexion, provides overarching leadership and strategic direction for the entire organization. This executive is responsible for guiding Alexion's mission to discover, develop, and commercialize innovative medicines for individuals affected by severe and life-threatening rare disorders. Coissac's role involves setting the company's long-term vision, fostering a culture of scientific excellence and patient-centricity, and ensuring operational alignment across all global functions. The President oversees key strategic decisions, manages relationships with stakeholders, and drives the company's growth trajectory. Patrice Coissac's leadership is instrumental in navigating the complex biopharmaceutical landscape and advancing Alexion's commitment to addressing significant unmet medical needs. This executive's strategic oversight ensures that Alexion remains at the forefront of rare disease research and therapeutic development, ultimately benefiting patients worldwide.

    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, directs strategic initiatives for the medical office and spearheads marketing operations. This leadership position involves aligning business planning with the company's mission to serve patients with severe rare disorders. Ong oversees the operational framework supporting medical research and development, ensuring efficient resource allocation and project execution. The role demands a deep understanding of the biopharmaceutical landscape, particularly within the rare disease sector, to effectively translate scientific advancements into accessible treatments. By integrating business planning with operational oversight, Moh-Lim Ong drives the strategic direction of key medical functions, contributing to Alexion's commitment to innovation and patient access globally. This executive ensures seamless collaboration between the medical office and marketing teams, fostering a unified approach to product commercialization and market penetration.

    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, orchestrates strategic operations and provides critical support to the Head of Development for regulatory and safety functions. This role is pivotal in ensuring that Alexion's development pipeline adheres to stringent global regulatory standards and safety protocols. Halter's responsibilities encompass strategic planning for operational efficiency, streamlining processes within the development lifecycle, and facilitating communication between key stakeholders. The Chief of Staff function involves managing critical projects, driving cross-functional alignment, and ensuring the Head of Development's strategic priorities are effectively implemented. By focusing on operational excellence and strategic foresight, Mackenzie Halter supports Alexion's commitment to bringing life-changing therapies for rare disorders to market safely and efficiently. This executive's work directly impacts the timely and compliant progression of Alexion's drug candidates through development phases.

    Yi Su - Chief Revenue Officer & Manager

    Yi Su, the Chief Revenue Officer & Manager at Alexion, drives all revenue-generating activities and manages key financial operations. This executive is responsible for developing and executing strategies to maximize commercial success for Alexion's portfolio of medicines targeting severe rare disorders. Yi Su oversees sales, market access, and commercial analytics, ensuring alignment with the company's overarching mission. The role demands a comprehensive understanding of global pharmaceutical markets, pricing strategies, and reimbursement landscapes to achieve ambitious revenue targets. By leading the commercial teams, Su ensures that Alexion's innovative treatments reach the patients who need them most. This leadership position is critical for sustaining the company's growth and its ability to invest in further research and development. Yi Su's strategic oversight of revenue streams directly supports Alexion's long-term financial health and its capacity to address unmet medical needs worldwide.

    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, directs strategic planning and operational execution within the medical office, alongside leading marketing initiatives. This dual focus ensures that business planning directly supports the medical office's objectives and that marketing strategies are informed by operational realities. Gorman's responsibilities include optimizing resource allocation, enhancing operational workflows, and driving the commercialization of Alexion's rare disease therapies. The role requires close collaboration with research and development teams to translate scientific breakthroughs into effective market strategies. By overseeing both business planning and marketing operations, Sean Gorman ensures a cohesive approach to bringing Alexion's life-changing medicines to patients globally. This executive's leadership is vital for maintaining Alexion's competitive edge and its commitment to patient access and therapeutic innovation.

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    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 Moh-Lim Ong (Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer) and Mackenzie Halter (Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development).
    Who is part of Alexion’s executive team?
    The executive team of Alexion includes leaders such as Patrice Coissac (President), Moh-Lim Ong (Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer), Mackenzie Halter (Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development) 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, Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer, Operations Senior Director, Strategy & Chief of Staff To, Regulatory & Safety Head of Development, Chief Revenue Officer & Manager, Director, Business Planning & Operations Medical Office Chief & Chief Marketing Officer.