Samuli Siren
Managing Partner at Redstone
Berlin, Germany
Samuli Siren, Managing Partner at Redstone is an active investor based in Berlin, Germany. This profile covers what Samuli Siren backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCMicro VCPECorporate VCInvestment Partner
- Stages
- Early Stage VentureSeed
- Invests in
- Artificial IntelligenceFintechLending & CreditHealthcare & BiotechDigital Health & HealthTechBiotech & PharmaMedTech & Medical DevicesSaaS & Enterprise
- Location
- Berlin, Germany
- Typical check
- $375K
- Past investments
- 13
Notable investments
SMACC
FlexpertoEDITION F GmbH
Remind.me
AcatusNewtracks
Inventorum
CobrainerRoobeoBERGFÜRST
Atheneum
LabforwardHow to reach Samuli Siren
Angels and operators like Samuli Siren 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 Accelerator.
Connect with Samuli Siren
Frequently Asked Questions
What does Samuli Siren invest in?
Samuli Siren invests in Artificial Intelligence, Fintech, Lending & Credit and Healthcare & Biotech, typically at Early Stage Venture and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Samuli Siren invest at?
Samuli Siren typically invests at Early Stage Venture and Seed. Lead with traction that fits the stage when you reach out.
What is Samuli Siren's typical check size?
Samuli Siren typically writes checks around $375K. Use it as a signal for whether your raise fits their stage.
How do I contact Samuli Siren?
Unlock Samuli Siren's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.