GLG Executive and Leadership Team

May, 2026

Leadership Overview

GLG has 6 executives leading key functions including strategy, marketing, technology, finance, and operations.

Driven by a commitment to knowledge sharing, GLG connects decision-makers with subject matter experts to foster informed insights and drive progress across industries.

Leadership Roles at GLG

  • Co-Chief Executive Officer - Rosana Boevers
  • Chief Financial Officer - Eu-Gene Sung
  • Chief Financial Officer & Council Member - Cathleen Nilson
  • Chief Marketing Officer - Fell Gray
  • Chief Technology Officer - Nathan Andrews
  • Chief of Staff - Siobhan Hogan
  • Rosana Boevers - Co-Chief Executive Officer

    Rosana Boevers, the Co-Chief Executive Officer at GLG, directs the overarching strategy and operational execution for the global expert network. This leadership role involves guiding the company's expansion and ensuring alignment with its mission to connect clients with specialized knowledge. Boevers oversees the integration of consultation and collaboration services, leveraging the extensive network of experts across diverse industries. The Co-Chief Executive Officer drives initiatives focused on enhancing client engagement and expanding the company's market reach. By fostering strong relationships with key stakeholders, Rosana Boevers ensures the continued delivery of high-value insights that support critical decision-making for financial services firms, consultancies, corporations, and nonprofits. This executive's focus remains on optimizing service delivery and cultivating a culture of expertise.

    Eu-Gene Sung - Chief Financial Officer

    Eu-Gene Sung, the Chief Financial Officer at GLG, manages the company's financial operations, including budgeting, forecasting, and financial planning, to ensure fiscal health and strategic growth. This executive oversees all financial reporting and analysis, providing critical insights to support executive decision-making and investment strategies. Sung directs the allocation of resources to maximize profitability and operational efficiency across the organization, supporting the extensive network of experts and client services. The Chief Financial Officer ensures compliance with all financial regulations and standards, safeguarding the company's assets and stakeholder interests. By driving financial discipline and identifying key performance indicators, Eu-Gene Sung plays a pivotal role in sustaining GLG's market leadership and facilitating its expansion into new sectors and geographies, supporting the firm's mission to connect clients with essential expertise.
    Eu-Gene Sung

    Cathleen Nilson - Chief Financial Officer & Council Member

    Cathleen Nilson, the Chief Financial Officer & Council Member at GLG, directs the financial strategy and oversight, ensuring robust fiscal management and contributing to the company's strategic direction. This dual role involves managing financial planning, analysis, and reporting, while also participating in high-level council discussions that shape corporate policy and long-term objectives. Nilson oversees the financial health of the organization, supporting the extensive network of consultation and collaboration experts. The Chief Financial Officer & Council Member ensures that financial resources are allocated effectively to drive growth and innovation, supporting GLG's commitment to serving leading financial services firms, consultancies, corporations, and nonprofits. By integrating financial acumen with strategic governance, Cathleen Nilson reinforces GLG's position as a trusted partner in knowledge acquisition and decision-making.
    Cathleen Nilson

    Fell Gray - Chief Marketing Officer

    Fell Gray, the Chief Marketing Officer at GLG, architects and executes the global marketing strategy to enhance brand visibility and drive client acquisition. This leadership position involves overseeing all aspects of marketing, including digital campaigns, content development, and market research, to effectively communicate GLG's value proposition. Gray directs efforts to engage leading financial services firms, consultancies, corporations, and nonprofits, highlighting the power of the expert network. The Chief Marketing Officer ensures cohesive messaging across all platforms, reinforcing GLG's position as a premier provider of consultation and collaboration expertise. By analyzing market trends and client needs, Fell Gray identifies opportunities for growth and innovation, directly impacting the company's revenue streams and market penetration. This executive's work is crucial for expanding the reach of GLG's unique service offerings.
    Fell Gray

    Nathan Andrews - Chief Technology Officer

    Nathan Andrews, the Chief Technology Officer at GLG, spearheads the development and implementation of innovative technological solutions that support the company's expert network and client services. This critical role involves overseeing the entire technology infrastructure, ensuring scalability, security, and efficiency across all digital platforms. Andrews directs the integration of advanced tools and systems to enhance the user experience for both clients and experts, facilitating seamless consultation and collaboration. The Chief Technology Officer drives technological advancements that align with GLG's business objectives, enabling the company to effectively serve financial services firms, consultancies, corporations, and nonprofits. By fostering a culture of technological excellence, Nathan Andrews ensures that GLG remains at the forefront of its industry, leveraging cutting-edge solutions to deliver unparalleled value and support the company's global operations.

    Siobhan Hogan - Chief of Staff

    Siobhan Hogan, the Chief of Staff at GLG, provides strategic support to the executive leadership team, facilitating the execution of key initiatives and ensuring operational alignment across departments. This role involves managing cross-functional projects, optimizing internal communication, and driving process improvements to enhance overall organizational effectiveness. Hogan works closely with the Co-Chief Executive Officer and other senior leaders to advance strategic priorities and address complex business challenges. The Chief of Staff plays a vital part in coordinating efforts that support GLG's mission of connecting clients with a vast network of experts. By streamlining operations and fostering collaboration, Siobhan Hogan contributes significantly to the company's ability to deliver exceptional service to financial services firms, consultancies, corporations, and nonprofits, ensuring efficient resource deployment and strategic focus.

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    Frequently Asked Questions Regarding GLG Top Executives and Leadership Team

    Who leads GLG?
    GLG is led by Rosana Boevers (Co-Chief Executive Officer), along with executives such as Eu-Gene Sung (Chief Financial Officer) and Cathleen Nilson (Chief Financial Officer & Council Member).
    Who is part of GLG’s executive team?
    The executive team of GLG includes leaders such as Rosana Boevers (Co-Chief Executive Officer), Eu-Gene Sung (Chief Financial Officer), Cathleen Nilson (Chief Financial Officer & Council Member) and other senior executives.
    How many executives does GLG have?
    GLG has 6 executives leading key business areas.
    What roles are included in GLG’s leadership team?
    The leadership team of GLG includes roles such as Co-Chief Executive Officer, Chief Financial Officer, Chief Financial Officer & Council Member, Chief Marketing Officer, Chief Technology Officer.