Luxembourg · Pre-Seed–Growth · 6 people tracked
Find your way into Expon Capital
2,739 people in our graph share verified history with the Expon Capital team — schools, employers, funds. One of them is your warm intro.
Investment thesis
Sepulveda Capital invests in technology-driven enterprises with a focus on artificial intelligence and decision intelligence platforms serving enterprise and government clients. The investment approach is informed by the founder's extensive experience across 100+ financing transactions, including three exits valued over $1 billion, with particular emphasis on companies with transformative business models and international growth potential.
Source: firm website, verified Aug 3, 2026.
Team · 6 people
from the firm's website & curated & public directories
Founder mafia
2 people who came through Expon Capital went on to found or lead other companies.
What they invest in
from 21 of 48 portfolio companiesAI & Machine Learning ×7Enterprise Software ×6SaaS ×6Marketplaces ×4Circular Economy ×3Cleantech ×3Climate Tech ×3Deep Tech ×3
HQs:Luxembourg×6Germany×3United States×3Finland×1France×1Ireland×1
Who they back
founder profiles across 10 portfolio companiesFounding team size:solo founder×52 founders×33 founders×2
Where their founders studiedfrom 16 founders with education data
International Space University ×3Hult International Business School ×2
What their founders studiedfrom 16 founders with field-of-study data
Business & Management ×6Engineering ×6Finance & Accounting ×2Physics ×2
Where their founders worked beforefrom 16 founders with career history
International Space University ×2NASA Ames Research Center ×2Offworld ×2
Investments · 48 tracked
founders shown can be your intro pathBy year:2025 · 62024 · 12023 · 22022 · 12021 · 72019 · 32018 · 12017 · 122 dated
Co-investorsAlbionVCCrane Venture PartnersIlluminate FinancialSixThirty Ventures
Catalyte is a technology services firm specializing in complex software development, data engineering, and AI solutions for large enterprises and government organizations.
AI & Machine LearningDeveloper ToolsEdTechEnterprise SoftwareHR TechSaaSBaltimore, US
Co-investorsMuse CapitalTA VenturesCross Culture VenturesJam FundPalm Drive CapitalRise of the Rest Seed+1 more
German multinational online food ordering and delivery company (DHER.DE).
Berlin, DE
Nikita Fahrenholz(Founder)Niklas Östberg(Founder & CEO)in
Co-investorsAlpha Wave GlobalAsgard - human Capital for AICathay InnovationFJ LabsGerman Startups GroupHDS Capital+16 more
Dott operates a shared micromobility service, offering e-scooters and e-bikes for urban riders.
Mobility & Transportation
Co-investorsFELIX CAPITALInvest-NLKibo VenturesSoftBank Vision FundWhite Star CapitalMcRock Capital
Exobiosphere is building a standardized space-based high-throughput testing platform that lets pharma and biotech partners run automated experiments in orbit, using microgravity combined with lab automation and bioinformatics to create more physiologically relevant 3D biology models.
BiotechDeep TechSpace Tech
Kyle Acierno(Co-Founder & Chief Executive Officer)inBruno Santos(Co-Founder & Director of R&D)inOlivia Borgue(Co-Founder & Director of Engineering)in
Co-investorsExpansion Ventures
Expon Capital is a venture capital firm established in 2015 that invests in early-stage European technology companies, particularly those with Luxembourg headquarters or expanding to Luxembourg.
Deep TechFintechSector AgnosticLuxembourg, LU
Hydrosat converts satellite and ground data into actionable information for sustainable agriculture and water management.
AgTechAI & Machine LearningClimate TechData & InfrastructureSpace TechWashington, US
Pieter Fossel(CEO)inScott Alan Soenen(Executive Officer)Alan Royce Dalby(Executive Officer, Director)Yun Jin Kim(Executive Officer)
BoardAndrew Robert Dearing(Director)inAdam Niewinski(Director)in
Co-investorsBlue Bear Capital PartnersFREEFLOWHemisphere Ventures LLCIndustrious VenturesOTB VenturesTechstars+3 more
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A company developing in vitro testing methods to assess respiratory sensitization for regulatory compliance in chemical and pharmaceutical industries.
BiotechDeep TechHealthtechMedical Devices
Next Gate Tech provides intelligent automation and portfolio data analytics solutions for asset managers, owners, and servicers to enhance their operational efficiency.
AI & Machine LearningEnterprise SoftwareFintechSaaSLuxembourg, LU
Co-investorsSeeder FundVolta Ventures
OCUS operates a on-demand professional photography platform that connects enterprises with vetted photographers worldwide to produce high-quality images for digital commerce and hospitality.
AI & Machine LearningB2B MarketplacesCreator EconomyEnterprise SoftwareMarketing TechSaaSFrance, FR
ThibaudJulien
Co-investorsBootstrap EuropeCAP HORN VCnoa
OpenExO is a community platform with 40,000+ members offering certification programs, training, and coaching in exponential transformation for organizations and professionals.
EdTechEnterprise SoftwareFuture of WorkSaaS
Salim Ismail(Co-Founder & Chairman)inKent Langley(Co-Founder, President, COO & Chief Science Officer)in
Passbolt is an open-source password manager designed for IT teams to securely store and share credentials like passwords, SSH keys, and API tokens at scale.
CybersecurityDeveloper ToolsEnterprise SoftwareLuxembourg, LU
Kevin Muller(Founder)in
Co-investorsAirbridge Equity PartnersScaleFund
Creates products enabling cloud and enterprise data centers to access data up to 50x faster with lower computational load and power consumption.
Moshe Twitto(Founder)in
Co-investorsBrilliance VenturesKoch Disruptive TechnologiesNaissState of Mind VenturesIntel CapitalViola Ventures+1 more
refurbed operates an online marketplace connecting European consumers with professionally refurbished electronics and other products, sourced from vetted refurbishing partners rather than refurbished in-house.
Circular EconomyE-commerceMarketplacesVienna, IE
Kilian Kaminski(Co-founder)inPeter Windischhofer(Co-founder)inJürgen Riedl(Co-founder)in
Co-investorsTarget GlobalC4 VenturesSpeedinvest
Refurbed operates an online marketplace for refurbished electronics, where independent refurbishers sell reconditioned devices to consumers with warranty and return guarantees.
Circular EconomyE-commerceMarketplaces
Peter Windischhofer(Founder)inKilian Kaminski(Founder)in
Co-investorsAcurio VenturesDIP CapitalIsomer CapitalC4 VenturesSpeedinvest
Refurbed operates a marketplace for refurbished electronics, where devices are reconditioned through a multi-step process and sold to consumers as more environmentally sustainable alternatives to new products.
Circular EconomyE-commerceMarketplaces
Peter Windischhofer(Founder)inKilian Kaminski(Founder)in
Co-investorsC4 VenturesEvli Growth PartnersSevenVenturesAlmaz CapitalSpeedinvest
Salonkee provides salon management software for hair and beauty professionals plus a consumer salon booking platform.
Co-investorsNewionPeakSpan Capital PartnersVerve VenturesFortino Capital
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Spire operates a constellation of nanosatellites that collect granular Earth and environmental data from orbit, providing analytics for climate, logistics, and community protection.
Climate TechData & InfrastructureLogistics & Supply ChainSpace TechVienna, Virginia, US
Peter Platzer(Founder)inJeroen Cappaert(Founder)inJoel Spark(Founder)inTheresa Condor(Executive Officer, Director)inCelia Perez Pelaz(Executive Officer)Thomas Krywe(Executive Officer)in
Co-investorsBessemer Venture PartnersEvolution VC PartnersFresco CapitalGPO FundGrishin RoboticsKluz Ventures+9 more
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)in
Co-investorsACTIVATE CAPITAL PARTNERSKickstart InnovationACTivate CapitalRockstartRubio Impact Ventures
Sympower operates a machine learning-powered platform that connects, aggregates, optimises, and trades energy flexibility from assets such as battery storage (BESS) and demand response, offering balancing responsible party (BRP) solutions.
AI & Machine LearningCleantechEnergy
Simon Bushell(Founder)in
Co-investorsRockstartACTivate CapitalRubio Impact Ventures
A company that builds interactive video experience (iVX) solutions designed to engage audiences and deliver measurable results for brands and agencies.
AdTechHealthtechMarketing TechMedia & EntertainmentSaaSTurku, FI
Matias Mäenpää(Founder)in
Co-investorsSuperhero CapitalVolta Ventures
Co-investorsHive ColabAccelerated Digital VenturesLocalGlobeOctopus Ventures
Wizata provides AI solutions for lime manufacturing that optimize calcination processes, improve product quality, and reduce energy consumption.
Advanced ManufacturingAI & Machine LearningCleantechFoodTechIoT
Co-investorsVolta VenturesFinindusKBC Focus Fund
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
AydoCascadeClimateCampCoinhouseCyberrDeelanFinartaGloseGlovoHelloBetterIdeeriItravelmaicMAIC Hospitality SolutionsMarketLeapNektriaServiceSmart RentingSmartrentingstoretailVerse
Exits · 2
1 IPOs · 1 acquisitions · showing 1storetailacq. by Criteo
Portfolio news
latest coverage across their companies
Exobiosphere · startbase.com · Aug 12, 2026
Delano · delano.lu · Aug 12, 2026
Delivery Hero · thestar.com.my · Aug 4, 2026
Hydrosat · norfolkdailynews.com · Jul 15, 2026
Spire Global · investing.com · Jun 24, 2026
Refurbed · siliconrepublic.com · Oct 23, 2025
Refurbed · siliconrepublic.com · Oct 23, 2025
Refurbed · siliconrepublic.com · Oct 23, 2025
Frequently asked questions
- How many investments has Expon Capital made?
- Expon Capital has 48 tracked investments, 2 of which have exited, including 6 dated in the last 24 months.
- What stage does Expon Capital invest at?
- Expon Capital invests at the Pre-Seed, Seed, Series A, Series B, Series C, Growth stages.
- What is Expon Capital's typical check size?
- Expon Capital typically writes checks of $550K – $1.6M.
- What sectors does Expon Capital focus on?
- Expon Capital focuses on AI & Machine Learning, Biotech, Crypto & Web3, Cybersecurity, Deep Tech, Enterprise Software, Fintech, Healthtech, Quantum Computing, SaaS, Sector Agnostic, Space Tech.
- Where is Expon Capital located?
- Expon Capital is headquartered in Luxembourg, LU.
- Does Expon Capital lead rounds?
- Yes, Expon Capital leads investment rounds.
- Who does Expon Capital co-invest with?
- Expon Capital most often shares deals with Cathay Innovation, Volta Ventures, Bessemer Venture Partners, among 70 tracked co-investors.
Media · Podcasts & interviews
featuring the teamE-conference Expon: Jerome Wittamer (Expon Capital) and Nick Tabone (Deloitte) - YouTube
360Crossmedia · Jerome Wittamer
[EXTRAIT] #173 - Jérôme Wittamer (Expon Capital) - Retour d’expérience sur le "Digital Tech...
Solenne Niedercorn · Jérôme Wittamer
LuxembourgMonAmour - Interview with Jerome Wittamer (Expon Capital) - YouTube
360Crossmedia · Jerome Wittamer
Successful startups' most secret sauce. Jérôme Wittamer / Expon Capital and Kevin Muller / Passbolt
TechChill · Jérôme Wittamer
The Luxembourg PE/VC stories with Jérôme Wittamer, Expon Capital
LPEA Luxembourg · Jérôme Wittamer
LPEA Insights 2018: Jerome Wittamer, Expon Capital - YouTube
LPEA Luxembourg · Jerome Wittamer
Images
Co-investors · 32
Techstars is a startup accelerator and early-stage investor that funds ambitious founders and provides capital, mentorship, and access to a global network of investors, operators, and corporate partners.
RRE Ventures is a boutique early-stage venture capital firm that backs founders across sectors, combining decades of experience with AI-driven analysis throughout the investment lifecycle.
Viola is an Israeli technology investment group managing over $7 billion in assets, operating multiple independent investment arms spanning venture capital, growth equity, credit, and fintech.
LocalGlobe is part of a multi-generational Phoenix Court platform that backs companies from pre-seed through public markets, founded by the Klein family who are considered founders of European seed investing with multi-decade relationships across the European tech ecosystem. The fund operates from a physical founder village at Phoenix Court in London and focuses on backing unconventional entrepreneurs in specific geographic neighbourhoods, having been among the earliest institutional backers of European outliers like Wise, Zoopla, and Citymapper.
Motier Ventures is a Paris-based business angel investor backed by the family behind Groupe Galeries Lafayette, supporting early-stage founders across multiple technology sectors.
Cultivation Capital is a venture capital firm that invests in early-stage companies with the potential to transform how people live and work, backing them from Series Seed through Series B.
ISAI is a French investment firm founded and backed by tech entrepreneurs, offering multiple strategies including early-stage VC, corporate VC, growth & buyout, and growth lending.
AlbionVC is an early-stage venture capital firm backing European founders, providing both capital and operational expertise across deeptech, health, finance, and intelligence sectors.
GPO Fund is a New York City-based investment firm that backs disruptive technology-enabled businesses in the stage between early-stage venture capital and the public markets.
SixThirty is a global early-stage venture capital firm investing at the intersection of health, wealth and privacy, connecting startups with established institutions through its collaboration platform.
Illuminate Financial is a venture capital firm investing in founders building the future of financial services, positioned at the center of the global financial services ecosystem and backed by major financial institutions as strategic investors in its funds.
Blue Bear is a venture capital and early growth equity firm investing in AI-powered digital technology companies addressing energy, infrastructure, and climate challenges.
▶20 more co-investors
Accelerated Digital VenturesIndustrious VenturesTrue VenturesSOSVPartech VenturesStellar CapitalCota CapitalBowery CapitalRevolutionDN CapitalQueensBridge Venture PartnersEQT VenturesSocial StartsScrum VenturesAmasiaPhoenix CourtRadical Ventures20VCPrimetime PartnersProsus Ventures
Firms observed investing alongside Expon Capital, from public investor directories. Shared companies are the overlap with Expon Capital's recorded portfolio.
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