George Tziralis co-founded Open Coffee Greece, a grassroots meetup series that helped build the modern Greek startup community from the ground up before an established VC ecosystem existed in the country. He combines a background as an entrepreneur and ecosystem organizer with his current role at Marathon Venture Capital, where he focuses on backing technically strong, research-heavy teams from Greece and its diaspora for global markets.
About their Fund
Sectors
AI, Cybersecurity, Robotics, Enterprise, Deeptech / Hardware
Rounds
Seed - Series B+
Avg Check Size
Notable Investments
Marathon Venture Capital is a network fund built around the global Greek tech diaspora that backs ambitious Greek founders building world-class technology companies, typically with engineering teams in Greece and commercial operations abroad. The fund systematically mines Greek universities and research centers for deep-tech spin-offs in non-obvious verticals like defense, energy, and agriculture, while providing unusually transparent operational support including open-sourced term sheets and detailed founder education on topics like venture debt.
Notable Fund
Investments
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Sheets they're in
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Sheets they're Fund is in
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Popular Investors
investor name
Active in
Rounds
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Links
Deeptech / Hardware
Robotics
Biotech
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12
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Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
Defense
Deeptech / Hardware
Energy
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7
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Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
Unknown
Defense
Deeptech / Hardware
Energy
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7
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
Unknown
Biotech
Health
Deeptech / Hardware
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2
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Unknown
Pre-Seed - Seed
Unknown
$250K - $2M
Unknown
Climate
Deeptech / Hardware
Materials
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4
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Unknown
Pre-Seed - Seed
Unknown
$400K - $1.5M
Unknown
Deeptech / Hardware
Robotics
Biotech
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7
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
Deeptech / Hardware
Robotics
Biotech
+
2
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
~$750K
Unknown
Fintech
Deeptech / Hardware
Devtools
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2
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$250K-$1M
Unknown
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