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Family-anchored FundAllocates capital directlyLAST VERIFIED Oct 2026 · 5 SOURCES

4 Friends Investment

Also known as 4FI, 4FI Management GmbH

Frankfurt investment platform founded 2016 as a family office; invests own and co-investor capital in German and Polish real estate, fitness and growing companies.

USEFUL FOR Business owners seeking a long-term partner · Co-investors

Family & background

HEADQUARTERS
Frankfurt am Main, Germany
OFFICES
Frankfurt am Main · Warsaw
FOUNDED
2016
OUTSIDE CAPITAL
Yes — also manages others' money

Investment approach

GEOGRAPHY
GermanyPoland
STAGES
Growth
ROUTES
Direct investments
STRATEGIES
Real estateDirect investments
INBOUND
Accepts submissions

Overview

4 Friends Investment (4FI Management GmbH, HRB 134534, Amtsgericht Frankfurt am Main) was founded in Berlin in 2016 to invest its founders' own capital alongside associated investors and institutions. It describes itself as a former family office that became an investment platform with offices in Frankfurt and Warsaw and about 30 staff. It focuses on real estate in Germany and Poland, fitness, health and lifestyle (it founded TRU Fitness in 2017), and minority stakes in growing companies. It reports holding and managing property worth more than €350 million.

Investment thesis

Invests its own capital with selected co-investors and institutions in value-add/opportunistic and core real estate in Germany and Poland (€1m–€150m), fitness, health and lifestyle, and long-term minority equity in early or growth-stage companies, preferably in its core sectors.

Holdings & investments (10)

  • Südcenter Oranienburg
    Real Estate & PropTech · since 2021
  • Real Estate & PropTech · since 2019
  • Wielicka, Krakow
    Real Estate & PropTech · since 2019
  • Stalowa, Warsaw
    Real Estate & PropTech · since 2019
  • Real Estate & PropTech · since 2019
  • Consumer & E-commerce · since 2017
  • Tierpark Center Berlin
    Real Estate & PropTech · since 2017
  • Origami European Holdings (joint venture with Origami Capital Partners)
    Real Estate & PropTech · since 2016
  • Real Estate & PropTech · since 2010
  • ACREST Property Group
    Real Estate & PropTech · Exited

People

  • Nathalie Weber
    Portfolio Manager · source
  • Stefan Zimmermann
    Co-Founder and Managing Partner; Geschäftsführer, 4FI Management GmbH · source
  • Matthias Schmitz
    Co-Founder and Managing Partner; Managing Partner TRU Fitness · source
  • Lars Rybak
    Managing Director · source
  • Christoph Wöstefeld
    Managing Director · source
  • Sebastian Schickl
    Managing Director; CFO TRU Fitness · source
  • Friedrich Lammers
    Transaction Manager · source

Classification

Family-anchored Fund. Started with one family's capital but now also manages money for third parties. How family capital is classified →

FAQ

4 Friends Investment is a family-anchored fund based in Frankfurt am Main, Germany, founded in 2016.

4 Friends Investment invests directly in companies. Its stated asset mix includes real estate and direct investments.

4 Friends Investment invests at Growth stage in Real Estate & PropTech and Consumer & E-commerce.

4 Friends Investment's stated ticket size is €1M–€150M.

Key people at 4 Friends Investment include Stefan Zimmermann (Co-Founder and Managing Partner; Geschäftsführer, 4FI Management GmbH), Matthias Schmitz (Co-Founder and Managing Partner; Managing Partner TRU Fitness), Lars Rybak (Managing Director) and Christoph Wöstefeld (Managing Director).

4 Friends Investment's holdings and investments include TRU Fitness, nxl RE, ACREST Property Group, Origami European Holdings (joint venture with Origami Capital Partners), Südcenter Oranienburg, Tierpark Center Berlin, Wielicka, Krakow and Stalowa, Warsaw, among others.

4 Friends Investment states that it accepts submissions through its official contact page.

Yes. 4 Friends Investment manages capital from outside investors.