Keiretsu Forum is a private group of international members comprising an angel investor network.

[1] Investor Capital Expos have been hosted in cities including: Stockholm, Seattle, Sydney, Toronto, Prague, Chicago, and Philadelphia.

Keiretsu Forum operates using a referral model that charges entrepreneurs and startups significant fees for the opportunity to pitch to the network members, a practice that is strongly discouraged in Angel Capital Association guidelines.

[3] He also established Open Angel Forum as an alternative investor network that doesn't charge fees.

Williams subsequently clarified Keiretsu's policy of waiving fees for startup companies that have limited capital and no revenue.