Investor profile
Stefan Haubner
Family Office, Venture capital & Managing Partner at Sterling Oak Group, General Partner at Apex Ventures
Stefan Haubner works as a General Partner at Apex Ventures. The firm's known portfolio counts 55 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Managing Partner at Sterling Oak Group, whose known portfolio counts 2 companies
- Koala
- respond.io
General Partner at Apex Ventures, whose known portfolio counts 55 companies
- TMRW Sports
- Kindred
- Versusgame
- ScorePlay
- ATMOS Space Cargo
- Samphire Neuroscience
- Mottu
- XSET
- Athena
- OroraTech
- HyperHeat
- Model Health
- and 43 more
Investor Profile
Stefan Haubner is listed against sectors AI, Climate, FinTech and Hardware, and focus areas Biotech, Computer Vision, Customer Support and Diagnostics in the database.
Apex Ventures appears in Growth, Late-Stage and Pre-Seed rounds across its known deals.
What the affiliated firm has backed is the closest available signal on whether Stefan Haubner is worth approaching.
Colleagues
Yaroslav Donchenko
Experienced Entrepreneur, Strategic Investor
New York, United States
Vera Kunz
Venture Capital
United Kingdom
Christoph Kanneberger
Co-Founder
Vienna, Austria
Maru Winnacker
Chairwoman of the Board
Germany
Wolfgang Neubert
General Partner
Vienna, Austria
Ion Hauer
Principal
Munich, Germany
Frequently asked questions
Who is Stefan Haubner?
Stefan Haubner is a family office investor and venture capital investor based in Austria, listed as General Partner at Apex Ventures. The known portfolio of that firm counts 55 companies. That portfolio belongs to the firm, not to Stefan Haubner personally.
What does Stefan Haubner invest in?
Listed sectors include AI, Climate, FinTech and Hardware; listed focus areas include Biotech, Computer Vision, Customer Support and Diagnostics. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Stefan Haubner invest at?
Apex Ventures appears in Growth, Late-Stage and Pre-Seed rounds across its known deals, and Stefan Haubner is listed there as General Partner. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Stefan Haubner listed at?
Stefan Haubner is listed as General Partner at Apex Ventures. 6 other people in the database share a firm with Stefan Haubner.
How do I contact Stefan Haubner?
An email address and a LinkedIn page are on file for Stefan Haubner. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal