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Single Family OfficePuts its own capital into companiesLAST VERIFIED Oct 2026 · 6 SOURCES

First Fellow Partners

Helsinki private investment firm founded by Risto Siilasmaa and Kim Groop that invests only its own capital in technology start-ups, mostly at pre-seed to Series A.

USEFUL FOR Founders · Co-investors

Family & background

HEADQUARTERS
Helsinki, Finland
FOUNDED
2016
OUTSIDE CAPITAL
No — own capital only

Investment approach

SECTORS
Software & SaaSArtificial IntelligenceFintechHealthTechDeep TechClimate & Energy
GEOGRAPHY
Global
STAGES
Pre-SeedSeedSeries A
ROUTES
Companies (own capital)
STRATEGIES
Direct investmentsVenture capital

Overview

First Fellow Partners Oy is a Helsinki private investment firm registered in 2016 and founded by Risto Siilasmaa and Kim Groop. It states that it invests only its own capital and has no LPs. It backs technology entrepreneurs, often at the idea stage, and says it does not limit itself by stage, sector or geography. Its portfolio page lists more than 60 companies, including Alphasense, Aiven, Hoxhunt and exits such as Wolt and Small Giant Games.

Investment thesis

Founder-first: backs bold, mission-driven technology entrepreneurs from idea to lasting impact with its own capital, without limits on stage, sector or geography.

Holdings & investments (67)

People

  • Risto Siilasmaa
    Co-founder · source
  • Kim Groop
    Co-founder · source

Frequently asked questions

First Fellow Partners is a single family office based in Helsinki, Finland, founded in 2016.

First Fellow Partners invests its own capital into companies. Its stated asset mix includes direct investments and venture capital.

First Fellow Partners invests at Pre-Seed, Seed and Series A stages in Software & SaaS, Artificial Intelligence, Fintech, HealthTech, Deep Tech and Climate & Energy.

Key people at First Fellow Partners include Risto Siilasmaa (Co-founder) and Kim Groop (Co-founder).

First Fellow Partners's holdings and investments include Alphasense, Aiven, Small Giant Games, ePassi, Wolt, Hoxhunt, The Upright Project and Inclus, among others.

No. First Fellow Partners invests its own capital and does not raise money from outside investors.