GLG is the World’s Insight Network.

We connect decision makers to the right experts so they can act with the confidence that comes from true clarity and have what it takes to get ahead. Our network of experts is the world’s most varied source of first-hand expertise, and we recruit thousands of new experts every day.

We bring the power of insight to every great professional decision.

Fast Facts

  • Founding: 1998, New York City
  • Locations: Partnering with clients around the world with localized service across Europe, the Americas, and Asia from hubs including New York, London, Singapore, and Mumbai
  • Network: Approximately 1 million, with thousands of new experts recruited every day
  • Headquarters: New York City
  • Leadership: Gemma Postlethwaite, CEO
  • Ownership: Privately held


We serve half of the Fortune 100 companies and the majority of the Top 10 global:

  • Leading Banks
  • Largest Private Equity Funds
  • Largest Technology Firms
  • Largest Law Firms
  • Largest Pharma Companies
  • Leading Management & Strategy Consultancies

How We Help

GLG Direct

GLG Direct connects our clients with Network Members for a phone or video call so they can gain the insight they need to inform their business decisions.

Calls | Placements | Expert Witness

GLG Research

GLG Research provides access to the right target populations, helping you meet your research objectives on your timeline.

Surveys | Qualitative | Integrated Insights

GLG Syndicated Insights

GLG Syndicated Insights unlocks tens of thousands of archived transcripts, reports, syndicated surveys, and webcasts in addition to invitations to in-person or remote timely, trending, and interactive conversations.

Library | Events


As the category pioneer, GLG has led the industry in the establishment and development of compliance standards for expert networks. Our unparalleled compliance systems and technologies provide a structured, auditable, and transparent way for clients to receive actionable insights in a manner that is consistent with the highest professional standards and best practices. GLG’s proprietary compliance systems and technology are major competitive differentiators and a core component of our culture.

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