# Rothenberger 4xS

Rothenberger 4xS is a Single Family Office based in Frankfurt, Germany.

## Overview

- **Organization type:** Single Family Office
- **Headquarters:** Frankfurt, Germany
- **Region:** Europe
- **Address:** Frankfurt, Germany
- **Founded:** 2001
- **Assets under management:** Undisclosed
- **Website:** rothenberger-4xs.com
- **LinkedIn:** https://www.linkedin.com/in/dr-sven-g%C3%BCnter-rothenberger-7729b017

## Regulatory record

- **Reports private funds:** No

## About

Rothenberger 4xS GmbH was established in 2001 by Dr. Helmut Rothenberger. The entity functions as the single-family office for the Rothenberger family. The firm allocates across private equity, real estate and venture capital. Asset classes include industrial engineering, tools manufacturing, property holdings and technology-oriented stakes. Confirmed focuses span ClimateTech, Industrial Tech, Energy Transition & Renewables, Mobility & Transportation and PropTech. Activity centers on Europe with buyout and growth-stage exposure. No specific portfolio companies or co-investors are named in available records. Team size and AUM remain undisclosed. Steen Rothenberger serves as Managing Director while also holding roles in hospitality and real-estate associations. Sven Rothenberger and Sönke Rothenberger participate in family operating and equestrian activities. Adjacent vehicles include the TOOLS FOR LIFE Foundation. No operational events from the last 24 months appear in public sources. The office maintains direct ownership of industrial and commercial properties in Germany alongside specialized assets such as dressage horses and recording facilities. Governance ties family operating businesses to investment decisions without external fund structures.

## Sectors

- ClimateTech
- Healthcare Services
- Industrial Tech
- WaterTech
- Data Analytics
- Energy Transition & Renewables
- Mobility & Transportation
- PropTech

## People

- Dr. Helmut Rothenberger — Founder
- Steen Rothenberger — Managing Director
- Sven Rothenberger — Managing Director of A.A.A. AG
- Sönke Rothenberger — Family Member

## Questions

### Who runs investment decisions at Rothenberger 4xS?

Steen Rothenberger serves as Managing Director. Sven Rothenberger holds a parallel role at A.A.A. AG. Decisions draw on family operating experience in industrial businesses.

### What asset classes does Rothenberger 4xS target?

The firm invests in mechanical engineering, specialized tool manufacturing, real estate and technology venture stakes. Confirmed sectors include Industrial Tech, PropTech and Energy Transition & Renewables.

### Does Rothenberger 4xS commit to external funds or pursue direct deals?

Available records indicate direct private-equity activity alongside property ownership. No fund commitments or external GP relationships are disclosed.

### What geographic focus does Rothenberger 4xS maintain?

Investment activity centers on Europe. Property holdings are concentrated in Germany.

## Related profiles

- [Rosser Capital Partners](https://altss.com/profile/rosser-capital-partners-family-office)
- [Rothschild & Co.](https://altss.com/profile/rothschild-co)

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Last updated: 2026-08-10T18:06:05.510Z

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