Number of Portfolio Companies 4
Number of Exits 
Unlock for free
  • Primary Job Title Chief Business Officer
  • Primary Organization 
    Immunai
  • Investor Type  Individual/Angel
  • Investor Stage  Seed
  • Number of Exits 

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.

Number of Investments 4
Mark Jacobstein has made 4 investments. Their latest investment was Seed Round - OurHealthMate on Nov 8, 2017, when OurHealthMate raised
$1.4M
.
Announced Date  
Organization Name  
Lead Investor  
Funding Round  
Money Raised  
Nov 8, 2017
OurHealthMate
Seed Round - OurHealthMate
$1.4M
Jun 12, 2012
Scoot
Seed Round - Scoot
$225K
Mar 22, 2012
Disconnect
Seed Round - Disconnect
$600K
Jan 1, 2006
Badongo.com
Series A - Badongo.com
Number of Exits 
Unlock for free
Mark Jacobstein has exit - Scoot.
  • Scoot Scoot Networks is an electric moped company that offers electric mobility-as-a-service vehicles.
Number of Current Jobs 1
Number of Past Jobs 2
Mark Jacobstein is the Chief Business Officer at Immunai. Additionally, Mark Jacobstein has had 2 past jobs including CEO at iSkoot.
Organization Name  
Title At Company  
Start Date  
End Date  
iSkoot
CEODec 2007Oct 2010
Small World
CEO
Number of Current Board & Advisor Roles 1
Mark Jacobstein is the Board Member at Luminopia.
Mark Jacobstein studied at Harvard University.