Investing Profile
Mark Jacobstein(222)
VCFormer CEOFounderOperator
Experienced CEO/founder helping entrepreneurs as Venture Builder
nearhorizon.vc/experienceStanford, California
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33 Investors
Connected to Charles Hudson (Precursor Ventures), Morgan Beller (NFX), Aaref Hilaly (Bain Capital Ventures), and 30 other investors on Signal.
Networks Mark is a member of
Harvard University Network
280 CONNECTIONS
Harvard University Network
280 CONNECTIONS
NewCo Network
153 CONNECTIONS
NewCo Network
153 CONNECTIONS
NewCo Network
153 CONNECTIONS
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cbCurrent Investing Position
General Partner
Investment Range
$500K - $1.2M
Sweet Spot
$1M
Investments On Record
3
Mark Jacobstein is on these Sector & Stage Rankings
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Mark Jacobstein's Investments On Record (3)
| Company | StageDateRound Size | Total Raised |
|---|---|---|
GLG - Gerson Lehrman Group | AngelN/A | |
Elation EMR | AngelN/A | |
Overclock Labs, creators of Akash Network | AngelN/A | |
Mark Jacobstein's Experience
General Partner South Park Commons2026 - Present
Venture Builder TVTAK2023 - Present
Venture Builder NewCo2023 - Present
Co-Founder and President Jimini Health2023 - Present
Venture Builder Sanctum, Inc.2023 - Present
Venture Builder Sleuth2023 - Present
Venture Builder Sleuth Inc2023 - Present
Advisor Sleuth2023 - Present
Co-Founder and President Stealth Company (Mark Jacobstein)2023 - Present
Co-Founder and President Stealth MentalHealthCo2023 - Present
Board Member Luminopia2018 - Present
Chief User Engagement Officer Guardant Health2015 - Present
Founder and Partner (de facto co-CEO) Small World Software1994 - Present
SVP iXLPresent
CEO Small World SportsPresent
VP Wireless and iTV Sporting NewsPresent
Entrepeneur in Residence Advantage CapitalPresent
Visiting Partner South Park Commons2025 - 2026
Board Member Odin2020 - 2026
Venture Builder Second2024 - 2025
Co-founder and General Partner Near Horizon2023 - 2025
Executive Business Advisor and stay-at-home dad TVTAK2023 - 2023
Executive Business Advisor and stay-at-home dad NewCo2023 - 2023
Executive Business Advisor and stay-at-home dad Numerous2023 - 2023
Executive Business Advisor at Immunai Immunai2022 - 2023
Chief Business Officer Immunai2020 - 2022
Co-Chair Working Group on Data Access Biden Cancer Initiative2019 - 2019
Board Member Full Circle Fund2011 - 2017
Chief Sabbatical Officer Currently on sabbatical2013 - 2015
Chief Sabbatical Officer No longer on Sabbatical2013 - 2015
VP Product Management Qualcomm 2010 - 2013
VP Product Management Qualcomm2010 - 2013
CEO Qualcomm2007 - 2010
CEO iSkoot2007 - 2010
Entrepreneur in Residence CRV2007 - 2007
Entrepreneur in Residence Charles River Ventures2007 - 2007
EVP Corporate Development & Marketing TVTAK2006 - 2007
EVP Corporate Development & Marketing NewCo2006 - 2007
EVP Corporate Development & Marketing loopt, Inc.2006 - 2007
President of Publishing, co-Founder Digital Chocolate2003 - 2005
Entrepeneur in Residence TVTAK2003 - 2003
Entrepeneur in Residence NewCo2003 - 2003
VP Wireless and iTV PERFORM2001 - 2002
CEO TVTAK1994 - 2002
CEO NewCo1994 - 2002
SVP SapientRazorfish1998 - 2000
Founder and Partner (de facto co-CEO) TVTAK1994 - 1998
Founder and Partner (de facto co-CEO) NewCo1994 - 1998
Mark Jacobstein's Education
Harvard University B.A. Computer Science with Cognitive Science
Harvard University B.A. Computer Science with Cognitive Science, cum laude General Studies
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