Mark Jacobstein

Notable investments

• OurHealthMateSeed · $1M · 2017
• ScootSeed · $230K · 2012
• DisconnectSeed · $600K · 2012
• Badongo.comSeries A · 2006
• Elation EMRAngel
• GLG - Gerson Lehrman GroupAngel
• Overclock Labs, creators of Akash NetworkAngel

Frequently co-invests with

Background

• General PartnerSouth Park Commons2026–present
• Venture BuilderTVTAK2023–present
• Venture BuilderSanctum, Inc.2023–present
• Co-Founder and PresidentJimini Health2023–present
• Venture BuilderNewCo2023–present
• AdvisorSleuth2023–present
• Venture BuilderSleuth Inc2023–present
• Venture BuilderSleuth2023–present
• Co-Founder and PresidentStealth MentalHealthCo2023–present
• Co-Founder and PresidentStealth Company (Mark Jacobstein)2023–present
• Board MemberLuminopia2018–present
• Chief User Engagement OfficerGuardant Health2015–present
• Founder and Partner (de facto co-CEO)Small World Software1994–present
• Entrepeneur in ResidenceAdvantage Capital
• VP Wireless and iTVSporting News
• CEOSmall World Sports
• SVPiXL
• Venture BuilderIT CRUX Mobile Apps Solutions
• Executive Business Advisor and stay-at-home dadIT CRUX Mobile Apps Solutions
• EVP Corporate Development & MarketingIT CRUX Mobile Apps Solutions
• Entrepeneur in ResidenceIT CRUX Mobile Apps Solutions
• CEOIT CRUX Mobile Apps Solutions
• Founder and Partner (de facto co-CEO)IT CRUX Mobile Apps Solutions
• Visiting PartnerSouth Park Commons2025–2026
• Board MemberOdin2020–2026
• Venture BuilderSecond2024–2025
• Co-founder and General PartnerNear Horizon2023–2025
• Executive Business Advisor and stay-at-home dadTVTAK2023–2023
• Executive Business Advisor and stay-at-home dadNumerous2023–2023
• Executive Business Advisor and stay-at-home dadNewCo2023–2023
• Executive Business Advisor at ImmunaiImmunai2022–2023
• Chief Business OfficerImmunai2020–2022
• Co-Chair Working Group on Data AccessBiden Cancer Initiative2019–2019
• Board MemberFull Circle Fund2011–2017
• Chief Sabbatical OfficerNo longer on Sabbatical2013–2015
• Chief Sabbatical OfficerCurrently on sabbatical2013–2015
• VP Product ManagementQualcomm2010–2013
• VP Product ManagementQualcomm2010–2013
• CEOiSkoot2007–2010
• CEOQualcomm2007–2010
• Entrepreneur in ResidenceCharles River Ventures2007–2007
• Entrepreneur in ResidenceCRV2007–2007
• EVP Corporate Development & Marketingloopt, Inc.2006–2007
• EVP Corporate Development & MarketingTVTAK2006–2007
• EVP Corporate Development & MarketingNewCo2006–2007
• President of Publishing, co-FounderDigital Chocolate2003–2005
• Entrepeneur in ResidenceTVTAK2003–2003
• Entrepeneur in ResidenceNewCo2003–2003
• VP Wireless and iTVPERFORM2001–2002
• CEOTVTAK1994–2002
• CEONewCo1994–2002
• SVPSapientRazorfish1998–2000
• Founder and Partner (de facto co-CEO)TVTAK1994–1998
• Founder and Partner (de facto co-CEO)NewCo1994–1998

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