VC

Investor profile

Marathon Venture Capital logo

Marathon Venture Capital

GRGBDEFRNLSEOtherB2B SaaSAI/MLCybersecurityDeep TechDevtoolsHealthtechClimateEnterpriseOther

See how your deck fits this investor's thesis, stage, and ticket size.

Analyse your fit

Investment thesis

Marathon Venture Capital backs ambitious Greek and European founders building world-class technology companies, aiming to be the first money in on non-consensus opportunities. The firm leads seed rounds with €1–2m tickets for 15–20% equity, maintaining pro-rata rights in follow-on rounds, and keeps fund sizes deliberately small to generate meaningful returns via secondaries and strategic M&A well before an IPO. Marathon focuses on founders doing something hard in important markets — whether that requires unique knowledge (e.g., a research PhD) or high agency in regulated or overlooked industries. The firm is sector-agnostic but has developed deep conviction in areas such as AI, cybersecurity, defense, agtech, and enterprise software. With over €170 million under management across three funds, Marathon has served as the first investor in category-defining companies like Causaly, Hack The Box, Augmenta, and LearnWorlds, with roughly half of its investments now originating beyond Greece across Europe.

Notable quotes

We don't need decacorns for our fund economics to work. We invest early on, maintain substantial equity positions, and keep our fund sizes small. These provide for various opportunities for meaningful returns, including secondaries and strategic M&A, well before an IPO. We did secondaries back in 2021 when most of the market was promising infinite holding times. In our culture, cash is king.

Panos Papadopoulos · TechCrunch, 'Amid Greek tech boom, a prominent seed-stage firm locks down €75M' · 2025-05-06

European founders can go a long way – even when starting from unlikely places. Our own journey has been a humble testament to it, and we are grateful for EIF's support throughout it. Today, we are excited to renew our commitment to our extended startup community, and help our peers go further.

George Tziralis · EIF press release, 'EIF invests €20m in Marathon Venture Capital's third fund' · 2025-05-08

We love being the first money in and work on non-consensus opportunities; we hope our portfolio speaks for itself. We are typically leading seed rounds with €1-2m tickets for 15-20% of equity under standard, publicly available terms, also maintaining our pro-rata in follow up rounds.

George Tziralis · LinkedIn post announcing Marathon Venture Capital Fund III · 2025-05-08

Recent investments

CompanyRoundSizeDate
StraionSeed2026-02
Pallma AIPre-seed$2m2026-01
Delian Alliance IndustriesSeries A2025-07
Progressive RoboticsSeed2025-01
PolyModels HubSeed$9m2025-11
Hack The BoxSeed$1m2019-04
CausalySeed$1m2018-07
AugmentaSeed$600k2018-07
LearnWorldsSeed$1m2019-07
SMPnetSeed$1m2023-05

Frequent co-investors

Fit check

Is Marathon Venture Capital a match for your startup?

Upload your deck and get an instant AI-powered fit analysis — see exactly how your startup aligns with this investor's thesis, stage focus, and ticket size.

Analyse your fit