Joerg Sommer, Managing Partner at Felsen Ventures is an active investor based in Bonn, North Rhine-Westphalia. This profile covers what Joerg Sommer backs, at which stage, and how founders can reach out in 2026.
Joerg Sommer is Managing Partner and Co-Founder of Felsen Ventures, a venture capital firm focused on European defence and dual-use technologies.
Joerg Sommer invests in Climate & Energy, Mobility & Logistics and GovTech & Defense, typically at Seed and Early Stage Venture.
- Investor type
- VC
- Stages
- SeedEarly Stage Venture
- Invests in
- Climate & EnergyMobility & LogisticsGovTech & Defense
- Location
- Bonn, North Rhine-Westphalia
- Typical check
- $375K
How to reach Joerg Sommer
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Round Funded. "Joerg Sommer." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/joerg-sommer
Frequently Asked Questions
Who is Joerg Sommer?
Joerg Sommer, Managing Partner at Felsen Ventures is an active investor based in Bonn, North Rhine-Westphalia. Joerg Sommer invests in Climate & Energy, Mobility & Logistics and GovTech & Defense, typically at Seed and Early Stage Venture.
What does Joerg Sommer invest in?
Joerg Sommer invests in Climate & Energy, Mobility & Logistics and GovTech & Defense, typically at Seed and Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Joerg Sommer invest at?
Joerg Sommer typically invests at Seed and Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Joerg Sommer's typical check size?
Joerg Sommer typically writes checks around $375K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.