Marc Sieberger is a Founder and Partner at Freigeist Capital. See sector focus and contact routes.
Marc Sieberger is a Founder and Partner at Freigeist Capital, a Bonn-based venture capital firm he co-founded in 2017 with Frank Thelen and Alex Koch, where he also serves as Managing Director and previously led operations and finance across fifty financing and M&A transactions. The firm’s investment thesis targets early-stage deep tech startups in Europe, focusing specifically on seed and pre-Series A rounds in sectors including artificial intelligence, robotics, aerospace, clean energy, biotechnology, and quantum computing. Freigeist typically invests up to seven-figure amounts per deal and adopts a hands-on, lead-investor approach, providing comprehensive support in product development, sales, and fundraising rather than just capital. Notable portfolio companies include the urban air mobility startup Lilium, energy storage firm Kraftblock, blockchain company Neufund, AI startup Smartlane, and Hardt Hyperloop. Sieberger distinguishes himself through a “360° approach” that emphasizes building European tech champions by actively partnering with founders on operations, finance, and fundraising using his extensive network in politics, business, and
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