GLG Executive and Leadership Team

June, 2026

Leadership Overview

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

Driven by a commitment to knowledge sharing, GLG connects decision-makers with subject matter experts to foster informed insights and strategic advantage across global 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 of Staff - Siobhan Hogan
  • Chief Marketing Officer - Fell Gray
  • Chief Technology Officer - Nathan Andrews
  • 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 consultation and collaboration network. This leadership position involves guiding the company's expansion and ensuring its services effectively meet the needs of financial services firms, consultancies, corporations, and nonprofits worldwide. Boevers oversees the integration of expert insights into client decision-making processes, driving the company's mission to provide unparalleled access to specialized knowledge. The Co-Chief Executive Officer's responsibilities include fostering strategic partnerships and ensuring the continued innovation of GLG's platform. By aligning departmental objectives with corporate goals, Rosana Boevers ensures the delivery of high-value solutions that empower clients to navigate complex market landscapes and achieve their strategic objectives. This role demands a comprehensive understanding of diverse industry sectors and the ability to translate market intelligence into actionable business strategies.

    Eu-Gene Sung - Chief Financial Officer

    Eu-Gene Sung, the Chief Financial Officer at GLG, directs all financial operations, including accounting, financial planning, and capital management. This executive oversees the fiscal health of the organization, ensuring robust financial controls and strategic resource allocation to support GLG's global expansion and service delivery. Sung's responsibilities encompass managing investor relations, optimizing profitability, and driving financial strategies that align with the company's mission of connecting clients with expert insights. The Chief Financial Officer plays a pivotal role in evaluating investment opportunities and mitigating financial risks across the company's diverse client base, which includes leading financial services firms, consultancies, and corporations. Eu-Gene Sung's financial acumen is critical for sustaining the company's growth trajectory and ensuring its long-term stability in the professional services sector. This leadership function involves rigorous analysis and forward-looking financial projections to guide strategic decision-making.
    Eu-Gene Sung

    Cathleen Nilson - Chief Financial Officer & Council Member

    Cathleen Nilson, the Chief Financial Officer & Council Member at GLG, oversees the financial strategy and operational integrity of the organization. This dual role involves managing all aspects of financial planning, reporting, and capital allocation, while also contributing to high-level strategic decision-making as a Council Member. Nilson's responsibilities include ensuring fiscal discipline, optimizing financial performance, and supporting GLG's mission to connect clients with expert insights across diverse industries. The Chief Financial Officer & Council Member works to strengthen the company's financial foundation, enabling sustained growth and effective service delivery to leading financial services firms, consultancies, and corporations. Cathleen Nilson's financial leadership and strategic input are critical for navigating complex market conditions and driving long-term value for GLG and its stakeholders. This position demands a comprehensive understanding of financial markets and corporate governance.
    Cathleen Nilson

    Siobhan Hogan - Chief of Staff

    Siobhan Hogan, the Chief of Staff at GLG, manages critical operational initiatives and supports the executive leadership team in executing strategic priorities. This role involves coordinating cross-functional projects, optimizing internal processes, and ensuring seamless communication across all levels of the organization. Hogan's focus is on enhancing operational efficiency and facilitating the effective implementation of GLG's business objectives. The Chief of Staff works closely with department heads to streamline workflows and drive key performance indicators, ensuring that the company's consultation and collaboration network operates at peak capacity. Siobhan Hogan's strategic oversight contributes directly to the company's ability to serve its global client base, which includes leading financial services firms, consultancies, corporations, and nonprofits. This position requires a keen understanding of organizational dynamics and a proactive approach to problem-solving, ensuring that GLG's operational framework supports its mission of connecting clients with expert insights.

    Fell Gray - Chief Marketing Officer

    Fell Gray, the Chief Marketing Officer at GLG, leads all marketing initiatives, brand strategy, and market positioning for the global expert network. This role involves developing and executing comprehensive marketing campaigns to enhance GLG's visibility and attract new clients across financial services, consultancies, and corporations. Gray's focus is on communicating the value proposition of GLG's consultation and collaboration services, driving lead generation, and strengthening client relationships. The Chief Marketing Officer oversees market research, digital marketing, content strategy, and public relations to ensure consistent brand messaging and market penetration. Fell Gray's strategic direction is crucial for expanding GLG's reach and reinforcing its reputation as a premier provider of expert insights. This leadership function requires a deep understanding of market dynamics and a creative approach to engaging diverse professional audiences.
    Fell Gray

    Nathan Andrews - Chief Technology Officer

    Nathan Andrews, the Chief Technology Officer at GLG, directs the company's technology strategy, infrastructure, and innovation pipeline. This executive is responsible for overseeing the development and implementation of cutting-edge technological solutions that support GLG's global operations and enhance its expert consultation platform. Andrews' mandate includes ensuring the security, scalability, and reliability of all IT systems, enabling seamless collaboration between clients and experts. The Chief Technology Officer drives technological advancements that improve user experience, streamline data management, and support the company's mission of providing unparalleled access to specialized knowledge. Nathan Andrews' leadership is vital for maintaining GLG's competitive edge in the professional services industry, ensuring that its technological capabilities align with evolving market demands and client expectations. This role requires a forward-thinking approach to technology adoption and a commitment to operational excellence.

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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 of Staff, Chief Marketing Officer.