ILLUMINA Executive and Leadership Team

July, 2026

Leadership Overview

ILLUMINA has 5 executives leading key functions including information technology, marketing, and administration.

Driven by innovation, ILLUMINA provides advanced genetic and genomic analysis solutions, impacting research and diagnostics globally through its cutting-edge sequencing and array-based technologies.

Leadership Roles at ILLUMINA

  • Chief Information Officer - Mark Field
  • Chief of Staff To the Chief Information Officer - Erin Kroll
  • Senior Executive Administrative Partner To Chief Marketing Officer - Jacqueline Tran
  • Senior Administrative Partner - Melissa Mosley
  • Senior Administrative Partner - Margaret Yam
  • Mark Field - Chief Information Officer

    Mark Field, the Chief Information Officer at ILLUMINA, directs the company's information technology strategy and operations. Overseeing all aspects of the IT infrastructure, Field ensures the secure and efficient management of data critical to ILLUMINA's genomic analysis solutions. This leadership role involves architecting scalable systems that support both internal operations and the complex data requirements of sequencing and array-based technologies. Field drives the implementation of advanced digital tools to enhance research capabilities and streamline diagnostic applications. By optimizing the technological backbone, Mark Field directly supports the company's mission to accelerate scientific discovery and improve patient outcomes through genetic insights. The Chief Information Officer's purview extends to cybersecurity, data analytics platforms, and ensuring compliance with global data regulations, thereby safeguarding ILLUMINA's intellectual property and operational integrity.
    Mark Field

    Erin Kroll - Chief of Staff To the Chief Information Officer

    Erin Kroll, the Chief of Staff To the Chief Information Officer at ILLUMINA, provides strategic support and operational oversight to the Chief Information Officer. Kroll manages key initiatives and projects within the IT department, ensuring alignment with ILLUMINA's broader business objectives. This role involves facilitating communication between the CIO and other departments, streamlining workflows, and driving efficiency across technology operations. Kroll's responsibilities include coordinating cross-functional teams to implement new IT solutions and enhance existing systems that support the company's sequencing and array-based technologies. By managing critical administrative functions and strategic planning processes, Erin Kroll enables the Chief Information Officer to focus on high-level decision-making and technological innovation. The Chief of Staff To the Chief Information Officer plays a vital part in translating IT strategy into actionable plans, ensuring the seamless execution of projects that advance ILLUMINA's market position in genetic analysis.

    Jacqueline Tran - Senior Executive Administrative Partner To Chief Marketing Officer

    Jacqueline Tran, the Senior Executive Administrative Partner To Chief Marketing Officer at ILLUMINA, provides comprehensive administrative and operational support to the Chief Marketing Officer. Tran manages complex scheduling, coordinates executive communications, and facilitates the smooth functioning of the marketing department. This role is crucial for ensuring that marketing initiatives supporting ILLUMINA's genetic and genomic analysis solutions are executed efficiently. Tran's responsibilities include preparing materials for executive review, organizing key meetings, and managing departmental logistics to enhance productivity. By handling critical administrative tasks, Jacqueline Tran allows the Chief Marketing Officer to concentrate on developing and executing strategies that drive market penetration for ILLUMINA's innovative products. The Senior Executive Administrative Partner To Chief Marketing Officer ensures seamless operational flow within a high-paced marketing environment, contributing directly to the company's outreach and brand presence.

    Melissa Mosley - Senior Administrative Partner

    Melissa Mosley, the Senior Administrative Partner at ILLUMINA, delivers essential administrative and organizational support across various executive functions. Mosley manages critical day-to-day operations, ensuring efficient workflow and effective communication channels within the teams supported. This role is vital for maintaining operational continuity and supporting strategic objectives related to ILLUMINA's advanced sequencing and array-based technologies. Mosley's duties encompass coordinating schedules, preparing documentation, and facilitating meetings to enhance executive productivity. By providing dedicated support, Melissa Mosley enables leadership to concentrate on driving innovation in genetic and genomic analysis. The Senior Administrative Partner contributes to the overall efficiency of the organization, ensuring that administrative functions seamlessly support the company's mission to advance scientific understanding and diagnostic capabilities.

    Margaret Yam - Senior Administrative Partner

    Margaret Yam, the Senior Administrative Partner at ILLUMINA, provides high-level administrative and operational assistance to support executive leadership. Yam manages complex logistical arrangements, coordinates executive calendars, and ensures the efficient execution of administrative tasks critical to ILLUMINA's operations. This position is key to facilitating the smooth functioning of departments involved in developing and distributing genetic and genomic analysis solutions. Yam's responsibilities include preparing reports, organizing executive briefings, and managing correspondence to optimize communication flow. By expertly handling these essential duties, Margaret Yam allows executives to dedicate their focus to strategic initiatives and the advancement of ILLUMINA's technological offerings. The Senior Administrative Partner plays an integral role in maintaining organizational efficiency and supporting the company's commitment to innovation in the life sciences sector.

    Explore Leadership Teams in Manufacturing

    Frequently Asked Questions Regarding ILLUMINA Top Executives and Leadership Team

    Who leads ILLUMINA?
    ILLUMINA is led by Mark Field (Chief Information Officer), along with executives such as Erin Kroll (Chief of Staff To the Chief Information Officer) and Jacqueline Tran (Senior Executive Administrative Partner To Chief Marketing Officer).
    Who is part of ILLUMINA’s executive team?
    The executive team of ILLUMINA includes leaders such as Mark Field (Chief Information Officer), Erin Kroll (Chief of Staff To the Chief Information Officer), Jacqueline Tran (Senior Executive Administrative Partner To Chief Marketing Officer) and other senior executives.
    How many executives does ILLUMINA have?
    ILLUMINA has 5 executives leading key business areas.
    What roles are included in ILLUMINA’s leadership team?
    The leadership team of ILLUMINA includes roles such as Chief Information Officer, Chief of Staff To the Chief Information Officer, Senior Executive Administrative Partner To Chief Marketing Officer, Senior Administrative Partner, Senior Administrative Partner.