Who We Are

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

GLG is the world’s insight network. Our clients rely on GLG’s global team to connect with powerful insight across fields from our network of approximately 1 million experts (and the hundreds of new experts we recruit every day).

We serve thousands of the world’s best businesses, from Fortune 500 corporations to leading technology companies to professional services firms and financial institutions. We connect our clients to the world’s largest and most varied source of first-hand expertise, including executives, scientists, academics, former public-sector leaders, and the foremost subject matter specialists.

GLG’s industry-leading compliance framework allows clients to learn in a structured, auditable, and transparent way, consistent with their own internal compliance obligations and the highest professional ethical standards. Our compliance standards are a major competitive differentiator and key component of the company’s culture.

Our Clients


Leading Banks


Largest Pharmaceutical Companies


Largest Global Technology Firms


Largest Law Firms


Global Private Equity Funds


Public Equity Investment Firms


of the Fortune 100


Social Impact Fellows

GLG Fact Sheet




GLG History


Our Purpose & Values
At GLG, we bring the power of insight to every great professional decision. Throughout the pandemic, we have been guided by our culture of high performance and compassion, as well as our shared values:
We operate with a common purpose.
We constantly redefine the category.
We are open and inclusive.
We fuel the unique insight in everyone.
We relentlessly prioritize the experience of our clients and experts.
Leadership Team
Chief Executive Officer
Head of Network Membership
Chief Marketing Officer
Chief Product Officer
Chief Human Resources Officer
General Counsel
Chief Communications Officer
Head of GLG Americas
Chief Financial Officer
Head of Corporate Development


  • Roger C. Freeman (Chair)
  • Mark Gerson (Co-Founder)
  • John Goldsmith
  • Thomas D. Lehrman (Co-Founder)
  • Edward Nicoll
  • Gemma Postlethwaite
  • Thomas P. Salice
  • Ahmad A. Sheikh
  • Paul Todd (CEO)