Mariusz Fyrstenberg
Angel investor in Stare Babice
Stare Babice, Masovian Voivodeship
Mariusz Fyrstenberg, Angel investor in Stare Babice is an active investor based in Stare Babice, Masovian Voivodeship. This profile covers what Mariusz Fyrstenberg backs, at which stage, and how founders can reach out in 2026.
Mr. Mariusz Fyrstenberg is an Angel Investor.
- Investor type
- Angel
- Stages
- Early Stage Venture
- Invests in
- SaaS & Enterprise
- Location
- Stare Babice, Masovian Voivodeship
- Typical check
- $500K
- Past investments
- 1
Notable investments
TidioHow to reach Mariusz Fyrstenberg
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About this profile
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Cite this page
Round Funded. "Mariusz Fyrstenberg." Round Funded investor database, updated September 8, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/mariusz-fyrstenberg
Frequently Asked Questions
What does Mariusz Fyrstenberg invest in?
Mariusz Fyrstenberg invests in SaaS & Enterprise, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Mariusz Fyrstenberg invest at?
Mariusz Fyrstenberg typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Mariusz Fyrstenberg's typical check size?
Mariusz Fyrstenberg typically writes checks around $500K. 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.