S3 Ventures — 2019 Investments
6 investments dated 2019 · listed companies and verified rows first · show all
SpectraWAVE develops optical and computational imaging technologies to diagnose and guide treatment decisions for patients with coronary artery disease and cardiovascular disease.
AI & Machine LearningDeep TechHealthtechMedical DevicesBedford, US
Eman Namati(President & CEO)inGuillermo Tearney(Founder; Professor of Pathology, Massachusetts General Hospital)Gregg Stone(Founder; Professor of Medicine, Mount Sinai Heart Health System)James Muller(Founder; Cardiologist, Brigham and Women's Hospital)inJeffrey O'Donnell(Founder; Managing General Partner, Runway Healthcare)Vivek Walimbe(Chief Operating Officer)in
Co-investorsLumira VenturesSV Health InvestorsDeerfield Management CompanyJohnson & Johnson Innovation – JJDC
Allstacks is an AI-agent platform that connects data from software development tools (Jira, GitHub, GitLab, Jenkins) to provide engineering teams and leaders with delivery metrics, risk alerts, and recommendations for planning, managing, and optimizing software creation.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareRaleigh, US
Jeremy Freeman(Founder)inHersh Tapadia(Founder)inDarrell J. Freeman, Jr.(Executive Officer, Director)Scot Sherwood(Director)Alok Nandan(Director)
BoardAndrew Drylie(Director)in
Co-investorsAtlassian VenturesCompanyon VenturesCreativeCoFirst Rays Venture PartnersGutbrain VenturesHyperplane Venture Capital+9 more
Alen Durbuzovic(Founder)John Resig(Founder)Leo Resig(Founder)Michael Grisko(Founder)
Co-investorsSageview CapitalValor Equity Partners
Levelset provides a platform for contractors and suppliers in the construction industry to manage payment documentation and processing, reducing payment delays and disputes.
Construction TechEnterprise SoftwareFintechSaaSNew Orleans, US
Co-investorsBrick Mortar VenturesGrand VenturesHorizons VenturesNew Orleans Startup FundAltos Ventures
FintechInsurTechSaaSAustin, US
Andrew Ambrose(Executive Officer, Director)Peter Rung(Executive Officer, Director)
BoardJohn Velasquez(Director)
Co-investorsRunway Venture PartnersTechstars
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.





















