Oktogon Ventures

Oktogon Ventures is a Budapest-based early-stage venture capital firm founded in 2019 to back high-growth B2B SaaS and technology-intensive startups across Central and Eastern Europe — including Hungary, Czechia, Poland, Slovakia, Romania, Slovenia, Croatia, and Bulgaria. The firm is led by General Partner Gyula Feher, co-founder of Ustream, which was acquired by IBM in Hungary's largest-ever startup M&A transaction, alongside Partner Vera Pistyur and a team of operator-investors with deep connections to US and Western European tier-one VCs. Oktogon's first deal in 2019 was co-invested alongside Ashton Kutcher's Sound Ventures, establishing the firm's transatlantic positioning from launch. Oktogon backs founders with 'zero to one' potential building products with global appeal from day one. Investment criteria include EUR 10,000-plus in monthly recurring revenue, a technology-heavy business, and the capacity for extraordinary growth. Initial check sizes run EUR 100,000 to EUR 400,000 with follow-on reserves of up to approximately EUR 1.2 million per company. Across 22 disclosed investments, portfolio highlights include Colossyan, an AI-generated video and synthetic presenter platform that later raised a $22 million Series A led by Lakestar; Flawless, an operations observability and incident-management platform that raised a $2.2 million seed co-led by 42CAP with Picus Capital and Dreamcraft; Hypefy, backed in January 2025; and Riptides, a B2B security services company that received the most recent disclosed investment in April 2025. Oktogon's CEE focus is both a geographic thesis and a talent arbitrage: the region produces a high concentration of technical founders whose global ambitions have historically been underserved by Western European capital. Feher's successful exit from Ustream gives the firm credibility with the founders it targets.