Mark Jacobstein — CEO
Mark has built and run companies at the forefront of new technologies for thirty years. In 1994, he founded Small World Sports, the world’s first online fantasy sports business, which he later sold to Paul Allen’s The Sporting News. In 1995, he spun out one of the world’s first web agencies, Small World Software, which he sold to iXL before its 1998 IPO. In 2003, Trip Hawkins convinced Mark to move to the Bay Area to co-found Sequoia and Kleiner Perkins-backed mobile games pioneer Digital Chocolate. Mark was then recruited to join loopt as the “adult supervision” for Sam Altman (Sam didn’t need any supervision). Later, Vinod Khosla recruited Mark to run mobile VOIP pioneer iSkoot, which he sold to Qualcomm in 2010. Mark spent four years as the Chief User Engagement Officer at Guardant Health, which raised more than $500M before its 2019 IPO, and was the CBO for Immunai, a world-leading AI-driven biotech operating at the intersection of machine learning and genomics that raised more than $300M during Mark’s tenure. In 2023, Mark co-founded Jimini Health, which is leveraging LLMs and cutting-edge science to develop radically more effective, engaging, and scalable mental health solutions. In 2023, Mark co-founded Near Horizon to pioneer a new approach to venture building. Near Horizon partners with entrepreneurs at company formation to build AI-powered companies, providing both capital and hands-on help. Mark has advised or invested in numerous startups, including Gerson Lehrman Group, Gusto, Elation EMR, Akash Network, SafeGraph, and Luminopia. Mark earned his BA from Harvard, where he concentrated in Computer Science. He lives on the Stanford campus with his wife and two (adorable) daughters.
Stackforce AI infers this person is a seasoned entrepreneur in Healthcare and Telecommunications, with a strong focus on AI and user engagement.
Location: Stanford, California, United States
Experience: 27 yrs 9 mos
Skills
- User Experience
- Corporate Strategy
- Fundraising
- Product Management
- Mobile Voip
- Business Development
Career Highlights
- Pioneered the first online fantasy sports business.
- Led successful sale of iSkoot to Qualcomm.
- Co-founded multiple AI-driven health and venture companies.
Work Experience
South Park Commons
General Partner (3 mos)
Visiting Partner (6 mos)
Second
Venture Builder (1 yr)
Jimini Health
Co-Founder and President (2 yrs 8 mos)
Sanctum, Inc.
Venture Builder (2 yrs 8 mos)
Sleuth
Advisor (2 yrs 9 mos)
Near Horizon
Co-founder and General Partner (2 yrs 2 mos)
Numerous
Executive Business Advisor and stay-at-home dad (4 mos)
Immunai
Executive Business Advisor at Immunai (1 yr)
Chief Business Officer (1 yr 7 mos)
Odin
Board Member (5 yrs 3 mos)
Biden Cancer Initiative
Co-Chair Working Group on Data Access (6 mos)
Luminopia
Board Member (8 yrs 3 mos)
Guardant Health
Chief User Engagement Officer (4 yrs)
No longer on Sabbatical
Chief Sabbatical Officer (2 yrs 5 mos)
Full Circle Fund
Board Member (6 yrs 5 mos)
Qualcomm
VP Product Management (2 yrs 3 mos)
iSkoot
CEO (2 yrs 10 mos)
Charles River Ventures
Entrepreneur in Residence (3 mos)
loopt, Inc.
EVP Corporate Development & Marketing (1 yr 6 mos)
Digital Chocolate
President of Publishing, co-Founder (2 yrs)
Advantage Capital
Entrepeneur in Residence (0 mo)
Sporting News
VP Wireless and iTV (1 yr)
iXL
SVP (2 yrs)
Small World Software
Founder and Partner (de facto co-CEO) (3 yrs 9 mos)
Small World Sports
CEO (8 yrs)
Education
B.A. at Harvard University