Gunther Sonnenfeld is an operator angel. The known portfolio counts 4 companies: Exosphere HQ, Heardable CoFounder, Quintype, Inc and ThinkState CoFounder.
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Investment focus
- Focus
- AudioCommunityContent ManagementMediaTechPublishing
Contacts
Gunther Sonnenfeld portfolio companies (4)
- Exosphere HQ
- Heardable CoFounder
- Quintype, Inc
- ThinkState CoFounder
Investor Profile
The listing covers sectors AI, Consumer and SaaS, and focus areas Audio, Community, Content Management and MediaTech. Startups operating in these areas may find Gunther Sonnenfeld relevant.
Stage-wise, the known deals cluster around Pre-Seed and Seed rounds.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
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Frequently asked questions
Who is Gunther Sonnenfeld?
Gunther Sonnenfeld is an operator angel with 4 known investments on file, among them Exosphere HQ, Heardable CoFounder and Quintype, Inc. The sections above list the sectors and stages attached to that record.
What does Gunther Sonnenfeld invest in?
Listed sectors include AI, Consumer and SaaS; listed focus areas include Audio, Community, Content Management and MediaTech. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Gunther Sonnenfeld invest at?
The known deals of Gunther Sonnenfeld include Pre-Seed and Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
How do I contact Gunther Sonnenfeld?
An email address, a phone number and a LinkedIn page are on file for Gunther Sonnenfeld. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 6 September 2026 · How this data is built · Report a correction or request removal