Other affiliations
In 1999, Clark launched myCFO, a company formed to help wealthy Silicon Valley individuals manage their fortunes. In late 2002, while Clark served on the board of directors, most of myCFO's operations were sold to Harris Bank and now operate as Harris myCFO.
Clark was chairman and financial backer of network-security startup Neoteris, founded in 2000, which was acquired by NetScreen in 2003 and subsequently by Juniper Networks.
Clark was a founding director and investor in the biotechnology company DNA Sciences, founded in 1998 to unravel the genetics of common disease using volunteers recruited from the Internet launched August 1, 2000 (see The New York Times). In 2003, the company was acquired by Genaissance Pharmaceuticals Inc.
Clark was the subject of the 1999 bestseller The New New Thing: A Silicon Valley Story by U.S. author Michael Lewis.
Clark was a notable investor in Kibu.com, an Internet website for teens, which received approximately $22 million in funding. The website shut down in 2000, returning its remaining capital to investors.
Clark coproduced the 2009 movie The Cove. His funding made possible the purchase and covert installation of some high-tech camera and sound-recording equipment required to capture the film's climactic dolphin slaughter. The film addresses the problem of whale and dolphin killing in Taiji, Wakayama, Japan.
Clark sits on the board and is one of the primary investors in the mobile technology company Ibotta. Ibotta became a publicly traded company in April 2024.
In 2017, Clark announced the launch of CommandScape, a cyber secure building management and automation platform.
In 2020, Clark announced the $30M A round of funding for Beyond Identity, with a product that is a phone-resident personal certificate-based authentication and authorization solution that eliminates all passwords.
