Sami Marttinen
Angel investor in Helsinki
Helsinki, Uusimaa
Sami Marttinen, Angel investor in Helsinki is an active investor based in Helsinki, Uusimaa. This profile covers what Sami Marttinen backs, at which stage, and how founders can reach out in 2026.
Mr. Sami Marttinen is a Co-Founder and serves as Co-Chief Executive Officer, Managing Director and Board Member at Swappie.
- Investor type
- Angel
- Stages
- Early Stage Venture
- Invests in
- Consumer & RetailE-commerce & D2CClimate & EnergyHardware & Deep TechManufacturing & IndustrialMarketing & AdTech
- Location
- Helsinki, Uusimaa
- Typical check
- $500K
- Past investments
- 1
Notable investments
BoughtHow to reach Sami Marttinen
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Connect with Sami Marttinen
Frequently Asked Questions
What does Sami Marttinen invest in?
Sami Marttinen invests in Consumer & Retail, E-commerce & D2C, Climate & Energy and Hardware & Deep Tech, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Sami Marttinen invest at?
Sami Marttinen typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Sami Marttinen's typical check size?
Sami Marttinen typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do I contact Sami Marttinen?
Unlock Sami Marttinen's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.