/Investor DB

Primer Ventures — Full Portfolio

3 tracked investments · listed companies and verified rows first

Countable Labscountablelabs.comin𝕏Jun 2026

Countable Labs (formerly Enumerix) develops Countable PCR, a DNA quantification technology that provides absolute target counts at single-molecule resolution as an alternative to qPCR, digital PCR, and NGS.

BiotechDeep TechHealthtechMedical DevicesPalo Alto, US

Stephen Fodor(Co-Founder & Board Director)Ari Chaney(Co-Founder & Board Director)inChristina Fan(Co-founder + CTO)inGiovanna Prout(Chief Executive Officer)in

Co-investorsF-Prime CapitalARCH Venture Partners

Misomiso.krinSeed · Sep 2018

Miso operates a home services marketplace platform that connects customers with service providers for tasks including housekeeping and moving services.

AI & Machine LearningB2B MarketplacesConsumerFuture of WorkMarketplacesSaaSSeoul, KR

Victor Ching(Founder)inPavel Terentiev(Director)Martin Mrozowski(Founder)Nicholas O'Brien(Founder)Seun Oh(Founder)

Co-investorsY CombinatorAddventureFundersClubKnockout CapitalSazzeGV (Google Ventures)+5 more

TrueNorthtruenorthfleet.comin𝕏Series BDefunct

TrueNorth operates a digital loadboard and AI-powered freight matching platform that connects brokers with vetted carriers.

AI & Machine LearningEnterprise SoftwareFintechLogistics & Supply ChainSaaSSan Francisco, US

Sanjaya Wijeratne(Founder)inJin Stedge(Founder)in

Co-investorsPJCScribble VenturesY Combinator137 Ventures20VCFifth Down Capital+15 more

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.