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TIGER 21

TIGER 21 is an exclusive global peer advisory network for ultra-high-net-worth entrepreneurs, investors, and executives.

Last updated September 15, 2026

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Overview

TIGER 21 is an exclusive global community of ultra-high-net-worth entrepreneurs, investors, and executives. It operates as a trusted, confidential peer advisory network that enables members to learn from each other on issues stemming from success, including wealth creation and preservation, family, legacy, and philanthropy. Membership is by invitation following a qualification process. As of the official website, the network spans 54 cities worldwide, with 162 groups and over 1,900 members. It was founded in 1999 by Michael W. Sonnenfeldt, starting with a single group of six entrepreneurs in New York City.

History

TIGER 21 was founded in 1999 by Michael W. Sonnenfeldt, an entrepreneur seeking objective advice regarding the management of his wealth following a major liquidity event. He started TIGER 21 with a single Group of six entrepreneurs in New York City who had all just sold their businesses and felt challenged as to how to wisely preserve their wealth. As TIGER 21 evolved, it became clear that issues of relevance, legacy, family, philanthropy, and what to do next weighed heavily on their minds. They found that sharing and learning from each other helped them to navigate the issues that accompanied their success.

Products and positioning

Exclusive global peer advisory network for ultra-high-net-worth individuals; membership by invitation.

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