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Fabian Heilemann

Fabian Heilemann

Founder & CEO at AENU — serial entrepreneur & impact investor

fabian-heilemann
Berlin, Germany
Joined January 2026

Network

6.7K connections
💡
Climate Tech Founders
🌱
Impact ESG Investors
🤝
AENU Core Team
🐦
Earlybird VC Network
🇪🇺
European Investment Funds
...
🏦
Allianz Investment Management

Summary

Serial founder and operator: Fabian has repeatedly founded and scaled startups with his brother (notably DailyDeal and Forto) and runs an investment vehicle (Heilemann Ventures); his background as a builder informs how he supports entrepreneurs. heilemann-ventures+2
Impact-first venture investor: As Founder & CEO of AENU he leads a fund that pairs financial return targets with rigorous impact screening, focuses on seed/Series A climate-tech and social-impact companies, and deploys €1–4m equity tickets at early stages. aenu+1
Activist and community builder: He co-founded Leaders for Climate Action to help organisations set and audit net-zero targets and has positioned his investing to amplify collective climate action across founders, LPs and NGOs. mckinsey+1
Domain depth and market access: Fabian combines entrepreneurial experience with institutional VC track record (building Earlybird's climate-tech practice and scaling AUM) to offer thesis-driven domain expertise and B2B market access for portfolio companies. mckinsey+1

Work

Education

Projects

Hobbies

Surfing; engaged with big-wave surfing community and ocean interests. aenu+1

Notes

CAChristophe Aumaitresaid
DFDr. Fabian Heilemann
is one of the most respected early-stage angel investors in climate tech they've worked with.

Feb 24, 2026