Koolen and Partners — Full Portfolio
8 tracked investments · listed companies and verified rows first
Munich, DE
Johannes Siebers(Founder)inMichael Siebers(Founder)
Co-investors83NorthBootstrap EuropeClaret Capital PartnerscoparionKey1 CapitalNewtown Partners+6 more
Inncivio provides AI-powered in-app guidance for fintech platforms to increase user conversion and retention by helping customers complete financial actions in real time.
AI & Machine LearningFintechSaaS
Ghassen(Co-founder)Anna(Co-founder)Félix(Co-founder)
Co-investorsEntrepreneurs Roundtable Accelerator (ERA)
Mysten Labs builds infrastructure and tools for web3, focusing on making decentralized systems secure, reliable, and ready for mass adoption.
Cloud ComputingCrypto & Web3Deep TechDeveloper ToolsPalo Alto, US
Adeniyi Abiodun(Founder)inKostas Kryptos Chalkias(Founder)inSam Blackshear(Founder)inEvan Cheng(Founder)inGeorge Danezis(Founder)Kostas Chalkias(Founder)
Co-investorsa16z cryptoAlumni VenturesAndreessen HorowitzArrington CapitalBasecamp FundBig Brain Holdings+38 more
ParkBee optimizes urban parking by connecting drivers, property owners, and municipalities through a digital platform that finds, books, and manages parking spaces across cities.
B2B MarketplacesMarketplacesMobility & TransportationPropTechAmsterdam, NL
Co-investorsTIIN Capital
Skoon operates a distributed energy platform that orchestrates flexibility from batteries, EVs, and other distributed assets to relieve grid congestion, reduce renewable curtailment, and shorten grid connection wait times.
CleantechEnergyIoTSaaSNetherlands, NL
Co-investorsBlue Bear Capital PartnersGraduate Entrepreneur
Sympower operates a platform providing demand response and energy flexibility services that help balance national electricity grids across European markets.
AI & Machine LearningCleantechClimate TechEnergyEnterprise Software
Simon Bushell(Founder)inGeorg Rute(Founder)
Co-investorsACTIVATE CAPITAL PARTNERSExpon CapitalKickstart InnovationRockstartStartGreen CapitalACTivate Capital+1 more
Wundermart provides AI-powered food and beverage solutions for hotels, including automated lobby shops, all-day breakfast options, and unmanned bars with 24/7 grab-and-go purchasing.
AI & Machine LearningFoodTechRetail Tech
Co-investorsSlingshot Ventures
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Florbs
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.



















