Primary Job Title Chief Business Officer Primary Organization Immunai
Location San Francisco, California, United States Regions San Francisco Bay Area, West Coast, Western US Gender Male
Investor Type Individual/Angel Investor Stage Seed Number of Exits
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Prior to iSkoot Mark was an Entrepreneur in Residence at Charles River Ventures, and prior to that served as the EVP at Silicon Valley-based loopt, Inc., a ground-breaking social mapping startup backed by Sequoia Capital and New Enterprise Associates. Before joining loopt, Jacobstein was the founding President for Digital Chocolate, one of the
world's largest publishers of mobile games, which raised more than $20M in venture capital from Sequoia Capital, KPCB, and Sutter Hill.
Mark was also the CEO and founder of Small World Sports, the world's first online fantasy sports business, where he raised more than $20M from Flatiron Ventures, SCP, CCP and NBC before selling the business to Paul Allen's The Sporting News. In addition, Jacobstein co-founded Small World Software, an Internet technology consultancy, which he sold to iXL in 1998. He then served as the SVP of sales and business development for iXL's New York office before its 1999 IPO. Jacobstein studied Computer Science at Harvard University and began his career as a software developer at Bloomberg L.P.