Fundraising Fox
Expon Capital
Family officeLuxembourg · Seed–Growth · 5 people tracked
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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 · 5 people
from the firm's website & public directories
What they invest in
from 19 of 46 portfolio companiesAI & Machine Learning ×7Enterprise Software ×7SaaS ×6Climate Tech ×3Data & Infrastructure ×3EdTech ×3Space Tech ×3Biotech ×2
HQs:Luxembourg×5United States×5Germany×2Finland×1France×1Netherlands×1
Who they back
founder profiles across 13 portfolio companiesFounding team size:solo founder×52 founders×43 founders×34+ founders×1
Where their founders studiedfrom 18 founders with education data
International Space University ×3Hult International Business School ×2Technische Universität Wien ×2
What their founders studiedfrom 17 founders with field-of-study data
Business & Management ×6Engineering ×6Finance & Accounting ×2Physics ×2
Where their founders worked beforefrom 17 founders with career history
International Space University ×2NASA Ames Research Center ×2Offworld ×2
Investments · 46 tracked
founders shown can be your intro pathBy year:2025 · 82024 · 12023 · 22021 · 62019 · 62018 · 12017 · 125 dated
Co-investorsAlbionVCCrane Venture PartnersIlluminate FinancialSixThirty Ventures
Cascade enables companies to fine-tune AI models using their own data and processes to generate higher-quality results at lower cost.
Data & InfrastructureEnterprise SoftwareSan Francisco, US
Adam AlSayyad(CEO)inHaluk Cem Demirhan(CTO)inAna-Maria Constantin(Founder)Pulak Goyal(Founder)
Co-investorsSoma CapitalY CombinatorAmplify.LAFPVGaorong VenturesGradient Ventures+7 more
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 CapitalRevolutionTA VenturesCross Culture VenturesJam FundPalm Drive Capital+2 more
German multinational online food ordering and delivery company (DHER.DE).
Berlin, DE
Nikita Fahrenholz(Founder)Niklas Östberg(Founder)inKolja Hebenstreit(Founder)Lukasz Gadowski(Founder)Markus Fuhrmann(Founder)
Co-investorsAlpha Wave GlobalAsgard - human Capital for AICathay InnovationFJ LabsGeneral AtlanticGerman Startups Group+21 more
Dott operates a shared micromobility service, offering e-scooters and e-bikes for urban riders.
Mobility & Transportation
Henri Moissinac(Founder)Maxim Romain(Founder)
Co-investorsFELIX CAPITALFJ LabsInvest-NLKibo VenturesMcRock CapitalSoftBank Vision Fund+5 more
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
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 VenturesNextwave [X] PartnersOTB Ventures+7 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
Marketleap manages selling on Amazon EU and UK for brands, handling VAT filing, PPC advertising across markets, localized product pages, and import/export logistics.
AI & Machine LearningE-commerceRetail TechNew York City, US
Mekki Mouaddeb(Founder)in
Co-investorsKima VenturesMotier VenturesSmedvig Ventures
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-investorsSeed XSeeder FundVolta VenturesDeutsche Borse
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 EuropenoaCAP HORN VCRing Capital
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 PartnersScaleFundSeeder Fund
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 VenturesAMD VenturesIntel Capital+2 more
Refurbed operates an online marketplace for refurbished electronics, where independent refurbishers sell reconditioned devices to consumers with warranty and return guarantees.
Circular EconomyE-commerceMarketplacesVienna, DE
Peter Windischhofer(Founder)inKilian Kaminski(Founder)inJürgen Riedl(Founder)in
Co-investorsAcurio VenturesBonsai Partners SGEIC, SAC4 VenturesCREAS IMPACTO GLOBAL SGEICDIP CapitalEvli Growth Partners+6 more
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(Executive Chairman)inJeroen Cappaert(Founder)inJoel Spark(Founder)inTheresa Condor(Chief Executive Officer)inCelia Perez Pelaz(Executive Officer)Thomas Krywe(Executive Officer)in
Co-investorsBessemer Venture PartnersBright Success CapitalEvolution VC PartnersFresco CapitalGen CapitalGPO Fund+12 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)inGeorg Rute(Founder)
Co-investorsACTIVATE CAPITAL PARTNERSKickstart InnovationRockstartStartGreen CapitalACTivate CapitalKoolen and Partners+1 more
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-investorsFinindusVolta VenturesKBC Focus Fund
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
AydoClimateCampCoinhouseCyberrDeelanFinartaGloseGlovoHelloBetterIdeeriItravelmaicMAIC Hospitality SolutionsNektriaServiceSmart RentingSmartrentingSpirestoretailVerse
Exits · 2
1 IPOs · 1 acquisitions · showing 1storetailacq. by Criteo
Portfolio news
latest coverage across their companies
Delano · delano.lu · Aug 12, 2026
Exobiosphere · eu-startups.com · Aug 11, 2026
Sympower · eu-startups.com · Sep 16, 2025
Frequently asked questions
- How many investments has Expon Capital made?
- Expon Capital has 46 tracked investments, 2 of which have exited, including 8 dated in the last 24 months.
- What stage does Expon Capital invest at?
- Expon Capital invests at the 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 FJ Labs, Cathay Innovation, Target Global, among 97 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 global startup accelerator and early-stage investor that funds and mentors ambitious founders, providing $220K in capital, a three-month program, and access to a worldwide network of mentors, investors, and corporate partners.
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.
Uruguay XXI's 2025 private-capital report records recent market activity involving this investor.
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.
Revolution is an investment firm that has backed founders, communities, and ideas for over two decades, spanning venture capital, entrepreneurship advocacy, and real estate and hospitality investments.
DN Capital is a global early-stage venture firm founded in 2000, investing in Seed, Series A and select Series B companies across Europe and North America.
EQT Ventures is the venture capital arm within the EQT platform, backing early-stage European founders building what it calls Generation-Defining Companies.
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 the venture family office of the Houzé family (Groupe Galeries Lafayette), acting as a value-added business angel that backs early-stage founders across several 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.
AlbionVC is an early-stage venture capital firm backing European founders, providing both capital and operational expertise across deeptech, health, finance, and intelligence sectors.
▶20 more co-investors
GPO FundSixThirty VenturesIlluminate FinancialBlue Bear Capital PartnersAccelerated Digital VenturesIndustrious VenturesTrue VenturesSOSVPartech VenturesStellar CapitalCota CapitalBowery CapitalQueensBridge Venture PartnersSocial StartsScrum VenturesAmasiaPhoenix CourtRadical Ventures20VCPrimetime Partners
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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