# Rheingau Founders

Rheingau Founders is a Venture Capital based in Berlin, Germany.

## Overview

- **Organization type:** Venture Capital
- **Headquarters:** Berlin, Germany
- **Region:** Europe
- **Address:** Oranienstraße 185, 10999 Berlin, Germany
- **Founded:** 2003
- **Assets under management:** Undisclosed
- **Website:** rheingau-founders.com
- **LinkedIn:** https://www.linkedin.com/company/rheingau-founders

## Regulatory record

- **Reports private funds:** No

## About

Rheingau Founders is a Berlin-based co-founder and venture capital firm. It has made 56 investments, including a Seed VC investment in Akhetonics on November 28, 2024. The firm has 8 portfolio exits, with Neptune Labs exiting on December 03, 2025.

## Sectors

- Digital Health
- InsurTech
- PropTech
- Enterprise Software
- FinTech
- Mobility & Transportation
- AI/ML
- ConstructionTech
- Marketplace

## People

- Philipp Hartmann — Founding Partner
- Dr. Tobias Johann-Walzel von Wiesentreu — Founding Partner
- Johann Reich — Partner
- Marius Weber — Partner
- Niels Müller — Team Member

## Questions

### Who runs investment decisions at Rheingau Founders?

Founding Partners Philipp Hartmann and Dr. Tobias Johann-Walzel von Wiesentreu lead investment decisions, supported by Partners Johann Reich and Marius Weber. The firm operates as a tight partnership where Hartmann and Johann personally negotiate term sheets and board participation across portfolio companies.

### How does Rheingau Founders source proprietary deal flow?

The firm sources primarily through its dense network in Berlin and the German Mittelstand, reinforced by Philipp Hartmann's mentorship roles at leading Berlin accelerator programs. Its campus model, which co-locates up to 200 portfolio company employees alongside the investment team, creates daily operational visibility into emerging ventures that cold outreach cannot replicate.

### What investment stages does Rheingau Founders typically target?

Rheingau Founders invests at pre-seed, seed, and Series A stages. Pre-seed checks target experienced entrepreneurs with a clear vision, often pre-revenue. Seed investments require a first software product and early revenues with KPI tracking in place. Series A engagements go to companies with completed founder teams and above-average continuous revenue growth.

### Which sectors does Rheingau Founders explicitly avoid?

The firm describes itself as industry-agnostic but has developed particular interest in Digital Health, InsurTech, PropTech, and ConstructionTech, with a preference for SaaS and marketplace business models. It states that B2C is not its primary focus, though it will engage with exceptional B2C founding teams.

### How is Rheingau Founders structured — venture capital fund or operating collective?

It operates as a hybrid: a formally organized venture firm that deploys capital across standard early-stage rounds, but also maintains a physical campus in Berlin-Kreuzberg that houses portfolio company employees and facilitates daily operational exchange. This co-location model, combined with active board participation and hands-on support, gives it characteristics of both a VC fund and an operating collective.

## Related profiles

- [Rheinest](https://altss.com/profile/rheinest)
- [Rhein Invest](https://altss.com/profile/rhein-invest)

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Last updated: 2026-06-03T20:00:00.000Z

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