Fundraising Fox
Extension Fund
Venture debtMadrid · Pre-Seed–Series B · 2 people tracked
Find your way into Extension Fund
1,477 people in our graph share verified history with the Extension Fund team — schools, employers, funds. One of them is your warm intro.
Investment thesis
Extension Fund positions itself as a venture debt pioneer in Spain, operating a hybrid debt fund that finances startups via convertible notes and venture debt. It backs ambitious founders across Spain from pre-seed through Series B, focusing on fintech, insurtech, proptech, cleantech and e-commerce. The convertible note offering is a short-term financing designed to convert into equity in a future round, while venture debt provides more flexible terms than traditional financing for venture-backed companies. Beyond capital, the team provides strategic support, business development connections and structuring of new financing with national and international partners, drawing on the operators' experience founding and backing companies.
Source: firm website, verified Aug 3, 2026.
What founders say
No founder feedback on Extension Fund yet.
Team · 2 people
from the firm's website
What they invest in
from 20 of 28 portfolio companiesSaaS ×9Fintech ×7AI & Machine Learning ×5Enterprise Software ×5Consumer ×4B2B Marketplaces ×3HR Tech ×3Wellness & Fitness ×3
HQs:Spain×13Germany×1United Kingdom×1United States×1
Who they back
founder profiles across 10 portfolio companiesFounding team size:solo founder×42 founders×23 founders×34+ founders×1
Where their founders studiedfrom 12 founders with education data
Massachusetts Institute of Technology ×2Universidad Carlos III de Madrid ×2Universitat Autònoma de Barcelona ×2
What their founders studiedfrom 10 founders with field-of-study data
Business & Management ×5Economics ×3Engineering ×3
Accelerator rootsportfolio companies that came through a program
Investments · 28 tracked
founders shown can be your intro pathBy year:2024 · 12023 · 12022 · 24 dated
Boopos provides business acquisition loans for entrepreneurs buying SaaS and other subscription-based online businesses, offering non-dilutive fixed-term financing up to 2.5x EBITDA as an alternative to banks and SBA loans.
FintechSaaS
Co-investorsBonsai Partners SGEIC, SATheVentureCityActyusCometaFasanara CapitalFJ Labs+2 more
Consentio is a platform connecting fresh produce suppliers and buyers to reduce waste, increase sustainability, and streamline supply chain operations.
AgTechB2B MarketplacesCircular EconomyFoodTechSaaS
Benoit VandevivereinVincent Rossoin
Co-investorsGrupo ZriserLabel InvestmentsMundi VenturesSalica InvestmentsScale Lab AndorraSquareOne
Elma is a health app that lets users chat with an in-house medical team in minutes 24/7, view their medical history, access online prescriptions, and book appointments at medical centers.
Digital HealthHealthtechInsurTech
Getpaid provides embedded payment infrastructure that lets software platforms offer payments natively under Getpaid's own payment institution licence, handling compliance, fraud prevention, and fund safeguarding.
Enterprise SoftwareFintechSaaSDüsseldorf, DE
Gonzalo R(Founder)Cyrosch Kalateh(Co-Founder & CEO)inGonzalo Ruiz(Co-Founder & CTO)
Co-investorsInventureInventurePICUS CAPITAL
A Spanish-language content site publishing informational articles about electric mobility, covering topics such as DGT regulations for personal mobility vehicles, electric scooter comparisons, hybrid vehicle types, and EV charger installation.
ConsumerMedia & EntertainmentMobility & Transportation
A wellness brand curator and ecosystem builder that creates, acquires, and nurtures companies focused on longevity and well-being, offering products ranging from supplements to superfoods.
ConsumerLongevityWellness & FitnessMediterranean region, ES
Co-investorsBonsai Partners SGEIC, SA10x Founders
Gretel provides synthetic data generation tools that enable developers to create high-quality, domain-specific datasets for training agentic AI systems and language models.
AI & Machine LearningData & InfrastructureDeveloper ToolsSaaSSan Diego, US
Ali Golshan(Co-Founder & CEO)inLaszlo Bock(Co-Founder, Board of Directors)Alex Watson(Co-Founder & Chief Product Officer (initially Co-Founder & CEO))John Myers(Co-Founder & CTO)
BoardSridhar Ramaswamy(Board Partner (Greylock))inKelly Perdew(Director)in
Co-investorsEnzo VenturesGreylock PartnersInsurtech Gateway FundMoonshots CapitalS32Village Global+3 more
Haddock provides restaurant management software that automates recipe costing and ingredient price tracking.
AI & Machine LearningEnterprise SoftwareFintechFoodTechSaaSBarcelona, ES
Arnau Navarro(Founder)inPol Rosell(Founder)inArnau Navarro Rodriguez(Executive Officer)
Co-investorsCOREangelsY CombinatorJME Ventures
Internxt is an open-source, zero-knowledge cloud storage provider that encrypts files on the user's device with AES-256 and post-quantum (Kyber-512) cryptography so the provider cannot access them.
Cloud ComputingConsumerCybersecuritySaaSValencia, ES
Fran Villalba Segarra(Founder & CEO)in
Co-investorsAngels CapitalTheVentureCityBanco SantanderCrowdcubeNotion CapitalProsegur Tech Ventures+1 more
Ladorian provides an AI-powered retail media platform for physical stores that creates audience segments from sales data and enables intelligent, personalized advertising campaigns across in-store devices to drive sales and generate advertising revenue for retailers.
AdTechAI & Machine LearningRetail Tech
Co-investorsEndeavor CatalystRakuten CapitalVertical Partners
A fintech platform that unifies multiple payment methods and flexible financing options into a single integration for businesses, enabling them to increase sales through alternative payment strategies while automating payment reconciliation and reporting.
E-commerceFintechSaaS
Pere Monràs(Founder)in
Co-investorsScale Lab AndorraBankia Fintech VentureEncomenda VCInnoCells
Payflow is a financial wellness platform for employers that enables employees to access earned wages on demand instantly and provides flexible compensation benefits through a mobile app and card.
Enterprise SoftwareFintechHR TechSaaSMadrid, ES
Avinash Sukhwai(Founder)inBenoit Menardo(Founder)inBenoist Menardo(Executive Officer, Director)
BoardCedric Asselman(Director)Elisabet Faus Morros(Director)
Co-investorsCarolus InvestCathay InnovationCats.vcCusp CapitalRocket Internet SESprint Vc+10 more
Plátano Melon manufactures and sells intimate wellness products, including clitoral stimulators designed for personal pleasure.
ConsumerDirect to ConsumerE-commerceFemTechWellness & Fitness
Service Club is a workforce platform for last-mile logistics that sources, trains, and certifies drivers at scale across Europe and the US.
AI & Machine LearningB2B MarketplacesHR TechLogistics & Supply ChainLondon, GB
SingularCover is an insurance broker offering customized online insurance policies for Spanish self-employed workers and small businesses, with flexible monthly payments and no long-term contracts.
InsurTechBarcelona, ES
Christian Hoffmann(Founder)in
Smart Protection provides brand and content protection services using AI and machine learning to detect and eliminate digital piracy, counterfeiting, and online threats for businesses globally.
AI & Machine LearningCybersecurityEnterprise SoftwareSaaS
Co-investorsBootstrap EuropeNauta CapitalSwanlaab Venture FactoryBig Sur VenturesCDTIJME Ventures+1 more
Vitaance provides a platform for companies to create customizable, inclusive, and global employee benefits programs that allow workers to choose benefits tailored to their individual needs.
HR TechWellness & Fitness
Co-investorsCalm/Storm VCShilling VCSoftBank Investment Advisers’ Emerge ProgramSoftBank Group
VIVLA enables multiple families to co-own second homes through a flexible, community-based model as an alternative to traditional real estate ownership.
B2B MarketplacesMarketplacesPropTechTravel & Hospitality
Carlos Gómez(CEO & Co-Founder)inCarlos Floria(COO & Co-Founder)in
Co-investorsBonsai Partners SGEIC, SAConcrete Venture CapitalAccelFasanara CapitalFJ LabsSamaipata
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
BloobirdsDersuGamestryHolavilmaOnskateTasteitUkio
Portfolio news
latest coverage across their companiesGretel · startuphub.ai · May 8, 2026
Internxt · eu-startups.com · Jul 16, 2025
Payflow · eu-startups.com · Jun 2, 2025
Frequently asked questions
- How many investments has Extension Fund made?
- Extension Fund has 28 tracked investments, 1 of which have exited.
- What stage does Extension Fund invest at?
- Extension Fund invests at the Pre-Seed, Seed, Series A, Series B stages.
- What sectors does Extension Fund focus on?
- Extension Fund focuses on Cleantech, E-commerce, Fintech, InsurTech, PropTech.
- Where is Extension Fund located?
- Extension Fund is headquartered in Madrid, ES.
- Who does Extension Fund co-invest with?
- Extension Fund most often shares deals with Bonsai Partners SGEIC, SA, Scale Lab Andorra, TheVentureCity, among 42 tracked co-investors.
Co-investors · 1
Enzo Ventures is a pre-seed venture firm backing early-stage technology founders across Europe, with a particular focus on Southern European and Mediterranean teams.
Firms observed investing alongside Extension Fund, from public investor directories. Shared companies are the overlap with Extension Fund's recorded portfolio.
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