GLG’s experts include asset managers, investors, consultants, physicians, scientists, engineers, lawyers, senior current and former c-level executives, and former government members. GLG’s clients include strategy consulting corporations, hedge funds, private equity firms, professional service firms, and non-profit organizations.

The firm was founded in 1998 and has been backed by private equity firms Silver Lake Partners, Bessemer Venture Partners, and SFW Capital Partners. GLG is headquartered in New York City, with offices in 22 cities in 12 countries.

Gerson Lehrman Group was founded by Yale Law School graduates Mark Gerson and Thomas Lehrman in 1998. GLG’s first customers were investors, and most of their growth from 1999 to 2005 was within the investment community. In 2006, they began working with big strategy consultancies and with companies in life sciences, chemicals and industrials, and technology. By 2010, The Wall Street Journal had described GLG as “dominating the U.S. expert networking industry”.

The expert network business model has drawn scrutiny for concerns relating to adherence to disclosure rules and insider trading within the investment industry. GLG’s policies include prohibitions against consultants sharing any nonpublic information about their employer or any public company, violating any ethical or legal restrictions relevant to consultants, or violating any laws.

According to en.wikipedia.org. Source of photos: internet