Thomas Gieselmann works as a Cofounder at Headline. The firm's known portfolio counts 10 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Cofounder at Headline, whose known portfolio counts 10 companies
- Notch
- Advanced Machine Intelligence
- Didero
- Hades Mining
- DeepIP
- Blossom Health
- Delfos Energy
- Celero
- Vizzia
- Hero Seguros
Investor Profile
Thomas Gieselmann is listed against sectors AI, Commerce, Consumer and FinTech, and focus areas Analytics, Cloud Infrastructure, Data and DevOps in the database.
Headline appears in Seed, Series A and Series B rounds across its known deals.
The firm portfolio and the focus above give founders context on whether Thomas Gieselmann matches their raise.
Colleagues at Headline
Showing 20 of 29
Romero Rodrigues
Managing Partner
São Paulo, Brazil
Andreas Haug
Founding Partner Headline (fka e.ventures)
Hamburg, Germany
Brett Kadesh
Venture Scout
San Francisco, United States
Blake Hirt
Venture Scout
Chicago, United States
Jonathan Becker
General Partner
Berlin, Germany
Christian Miele
General Partner
Berlin, Germany
Mathias Schilling
Managing Partner
San Francisco, United States
Nancy Xiao
Partner
San Francisco, United States
Ketul Patel
Investor
United States
Victor Toledo Soares Cintra
Investment Team
São Paulo, Brazil
Ram Raval
Investor
Virginia Beach, United States
Taylor Brandt
Partner
San Francisco, United States
Enzo Tinoco Valente de Lima
Investor
São Paulo, Brazil
Vince M.
Venture Scout
Los Angeles, United States
Christian Leybold
Managing Partner
Berlin, Germany
Clarey Zhu
Partner
San Francisco, United States
Trevor Neff
Partner
United States
Akio T.
Co-Founder & Partner
Tokyo, Japan
Sébastien Gros
Venture Scout
United Kingdom
Nicolas von Blottnitz
Vice President
Indonesia
Frequently asked questions
Who is Thomas Gieselmann?
Thomas Gieselmann is a venture capital investor based in San Francisco, California, United States, listed as Cofounder at Headline. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to Thomas Gieselmann personally.
What does Thomas Gieselmann invest in?
Listed sectors include AI, Commerce, Consumer and FinTech; listed focus areas include Analytics, Cloud Infrastructure, Data and DevOps. 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 Thomas Gieselmann invest at?
Headline appears in Seed, Series A and Series B rounds across its known deals, and Thomas Gieselmann is listed there as Cofounder. 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 Thomas Gieselmann listed at?
Thomas Gieselmann is listed as Cofounder at Headline. 29 other people in the database share a firm with Thomas Gieselmann.
How do I contact Thomas Gieselmann?
An email address, a phone number and a LinkedIn page are on file for Thomas Gieselmann. 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 5 September 2026 · How this data is built · Report a correction or request removal