Thomas Gieselmann
Angel investor in San Francisco
San Francisco, California
Thomas Gieselmann, Angel investor in San Francisco is an active investor based in San Francisco, California. This profile covers what Thomas Gieselmann backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEFounderInvestor
- Stages
- Early Stage VentureSeries B
- Invests in
- SaaS & EnterpriseHR & Future of WorkArtificial IntelligenceGaming & EntertainmentMedia & ContentCrypto & Web3
- Location
- San Francisco, California
- Typical check
- $1.8M
- Past investments
- 10
Notable investments
VULCUN
NGINXFotologPolygon.ioHow to reach Thomas Gieselmann
Angels and operators like Thomas Gieselmann reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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About this profile
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Cite this page
Round Funded. "Thomas Gieselmann." Round Funded investor database, updated September 24, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/thomas-gieselmann
Frequently Asked Questions
What does Thomas Gieselmann invest in?
Thomas Gieselmann invests in SaaS & Enterprise, HR & Future of Work, Artificial Intelligence and Gaming & Entertainment, typically at Early Stage Venture and Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does Thomas Gieselmann invest at?
Thomas Gieselmann typically invests at Early Stage Venture and Series B. Lead with traction that fits the stage when you reach out.
What is Thomas Gieselmann's typical check size?
Thomas Gieselmann typically writes checks around $1.8M. 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.