GLG Executive and Leadership Team

July, 2026

Leadership Overview

GLG has 5 executives leading key functions including marketing, information technology, technology, finance, and operations.

Driven by a commitment to expert insights, GLG connects decision-makers with a global network of specialists to foster informed strategies and accelerate growth across diverse industries.

Leadership Roles at GLG

  • Chief Financial Officer - Vanna Krantz
  • Chief Marketing Officer - Fell Gray
  • Chief Information Officer - Shahriar Rafimayeri
  • Chief Technology Officer - Nathan Andrews
  • Chief of Staff - Siobhan Hogan
  • Vanna Krantz - Chief Financial Officer

    Vanna Krantz, the Chief Financial Officer at GLG, directs all financial planning, management, and reporting activities. Overseeing fiscal operations, budgeting, and investment strategies, the Chief Financial Officer ensures the financial health and sustainability of the organization. This pivotal role involves managing capital allocation, optimizing financial performance, and ensuring compliance with all regulatory requirements. By providing strategic financial guidance, Vanna Krantz directly supports GLG's growth objectives and operational efficiency. Krantz's expertise is essential for navigating the financial landscape and reinforcing GLG's commitment to delivering value to its stakeholders, including its extensive network of experts and its global client base across various industries.

    Fell Gray - Chief Marketing Officer

    Fell Gray, the Chief Marketing Officer at GLG, directs all global marketing initiatives. Overseeing brand strategy and demand generation, the Chief Marketing Officer ensures alignment with GLG's mission to connect clients with expert insights. This leadership role involves expanding market reach through targeted campaigns and digital engagement. By optimizing the marketing funnel, Fell Gray directly impacts client acquisition and retention. Ultimately, Gray drives the company's growth narrative and strengthens its market position. The Chief Marketing Officer's efforts are crucial for communicating GLG's value proposition to financial services firms, consultancies, corporations, and nonprofits worldwide, fostering deeper client relationships and supporting overall business objectives.
    Fell Gray

    Shahriar Rafimayeri - Chief Information Officer

    Shahriar Rafimayeri, the Chief Information Officer at GLG, architects the company's technology infrastructure and information security. Overseeing all IT operations and digital transformation efforts, the Chief Information Officer ensures robust, scalable systems that support GLG's global network of experts and clients. This critical role involves managing data integrity, enhancing cybersecurity protocols, and implementing innovative technological solutions to streamline operations. By driving technological advancements, Shahriar Rafimayeri directly supports the efficient delivery of GLG's professional services. Rafimayeri's strategic vision for information management is fundamental to maintaining client trust and operational excellence across the organization, ensuring seamless collaboration and secure data handling for leading financial services firms, consultancies, and corporations.
    Shahriar Rafimayeri

    Nathan Andrews - Chief Technology Officer

    Nathan Andrews, the Chief Technology Officer at GLG, spearheads the development and implementation of cutting-edge technological solutions. Overseeing the engineering teams and product innovation, the Chief Technology Officer drives the evolution of GLG's platform to enhance expert engagement and client collaboration. This leadership position focuses on building scalable, high-performance systems that meet the dynamic needs of GLG's diverse clientele. By championing technological advancements, Nathan Andrews directly contributes to the company's competitive edge and its ability to deliver unparalleled expert insights. Andrews's strategic direction in technology is vital for maintaining GLG's position as a leader in professional services, ensuring the platform remains robust, user-friendly, and capable of supporting complex consultation and collaboration requirements globally.

    Siobhan Hogan - Chief of Staff

    Siobhan Hogan, the Chief of Staff at GLG, provides strategic support and operational oversight across key business functions. Coordinating initiatives and ensuring alignment between departments, the Chief of Staff facilitates the execution of GLG's strategic priorities. This role involves managing cross-functional projects, optimizing internal processes, and serving as a key liaison between executive leadership and operational teams. By driving operational effectiveness, Siobhan Hogan directly enhances the company's ability to serve its clients and experts. Hogan's contributions are critical for maintaining organizational efficiency and supporting the seamless delivery of GLG's consultation and collaboration services worldwide, reinforcing its market leadership.

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    Frequently Asked Questions Regarding GLG Top Executives and Leadership Team

    Who leads GLG?
    GLG is led by Vanna Krantz (Chief Financial Officer), along with executives such as Fell Gray (Chief Marketing Officer) and Shahriar Rafimayeri (Chief Information Officer).
    Who is part of GLG’s executive team?
    The executive team of GLG includes leaders such as Vanna Krantz (Chief Financial Officer), Fell Gray (Chief Marketing Officer), Shahriar Rafimayeri (Chief Information Officer) and other senior executives.
    How many executives does GLG have?
    GLG has 5 executives leading key business areas.
    What roles are included in GLG’s leadership team?
    The leadership team of GLG includes roles such as Chief Financial Officer, Chief Marketing Officer, Chief Information Officer, Chief Technology Officer, Chief of Staff.