# Rheingau Founders

> Rheingau Founders is a VC fund in Berlin backing Software and E-Commerce. See 85 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Berlin, Germany
- Total investments: 85
- Last investment: Nov 2024
- Lead investor: 28%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/company/rheingau-founders
- X (Twitter): http://twitter.com/RheingauFNDRS
- Website: http://rheingau-founders.com
- Facebook: http://www.facebook.com/RheingauFounders

Rheingau Founders is a Berlin&Munich based Venture Capital firm active since 2011. Focusing on pre-seed to Series A investments in Europe, predominantly B2B in the fields of Marketplaces, Software as a Service, InsurTech, and eHealth. Rheingau targets start-ups that have the potential to sustainably disrupt existing processes and value chains.Besides the financial investment, we offer strategic support through the mentorship of our partners.

## Contacts

5 contacts available for Rheingau Founders. Shizune tracks 4 team members at Rheingau Founders. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/rheingau-founders?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $110k–$6.3M |
| Pre-Seed | $770k–$2.7M |
| Series A | $2.4M–$14M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 12 | 14% |
| E-Commerce | 9 | 11% |
| Internet | 7 | 8% |
| Health Care | 7 | 8% |
| Information Technology | 6 | 7% |

93 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 32 | 38% |
| Series A | 16 | 19% |
| Pre-Seed | 10 | 12% |
| Funding Round | 6 | 7% |
| Series B | 4 | 5% |

8 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Germany | 36 | 42% |
| United States | 4 | 5% |
| Poland | 3 | 4% |
| The Netherlands | 2 | 2% |
| Singapore | 1 | 1% |

7 countries tracked in total.

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Johann Reich | General Partner | 20 | https://shizune.co/investors/profile/johann-reich |
| Marius Weber | Partner | 0 | https://shizune.co/investors/profile/marius-weber |
| Philipp Hartmann | Founder and Managing Partner | 0 | https://shizune.co/investors/profile/philipp-hartmann |
| Tobias Johann | Founder and Managing Partner | 12 | https://shizune.co/investors/profile/tobias-johann |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Akhetonics | Akhetonics is a photonic computing company building all-optical processors for ultra-fast AI and high-performance computing. It is a deep-tech semiconductor company focused on photonic (light-based) computing hardware. It develops all-optical processors designed to accelerate AI, reasoning, and complex computational workloads. The company aims todeliver ultra-fast, energy-efficient computing beyond traditional electronic chips. | $6.3M | Seed | Nov 28, 2024 |  |
| MoleQlar | MoleQlar is a data and research-driven longevity company. It provides valuable information and offers consumers lab-tested nutritional supplements. The company focuses on functional medicine with optimized nutrition. Their product range includes Uthever NMN, Resveratrol, Betaine, Carnosine, and more. These products are aimed at lowering biologicalage and promoting health and longevity. MoleQlar also offers health tracking services. The company is certified in Germany and delivers its products EU-wide, including Switzerland. |  | Seed | Nov 06, 2023 |  |
| Qualifyze | Qualifyze (former ChemSquare) was founded out of the Technical University of Darmstadt in September 2017. Today, we are based in Frankfurt am Main, the heart of Germany’s pharmaceutical cluster, where the leading life science companies are based. Our team consists of 16 people with diverse backgrounds and areas of expertise in business,engineering, and technology as well as several strategic partners from the pharma, food and cosmetics industry. | $12M |  | Aug 21, 2023 |  |
| Akhetonics | Akhetonics is a photonic computing company building all-optical processors for ultra-fast AI and high-performance computing. It is a deep-tech semiconductor company focused on photonic (light-based) computing hardware. It develops all-optical processors designed to accelerate AI, reasoning, and complex computational workloads. The company aims todeliver ultra-fast, energy-efficient computing beyond traditional electronic chips. | $2.3M | Seed | Jun 13, 2023 |  |
| NetBird | Wiretrustee is an open-source VPN platform built on top of WireGuard® making it easy to create secure private networks for your organization or home. It requires zero configuration effort leaving behind the hassle of opening ports, complex firewall rules, VPN gateways, and so forth. | $1.2M | Pre-Seed | May 03, 2023 |  |
| OpenReplay | OpenReplay is a session replay stack that lets you see what users do on your web app, helping you troubleshoot issues faster. | $4.7M | Seed | Jun 28, 2022 |  |
| neptune.ai | Track and version your notebooks: Log all your notebooks directly from Jupyter or Jupyter Lab. All you need is to install a Jupyter extension.Manage your experimentation process: Neptune tracks your work with virtually no interference to the way you like to do it. Decide what is relevant to your project and start tracking: - Metrics, -Hyperparameters, - Data versions, - Model files, - Images, - Source code.Integrate with your workflow easily: Neptune is a lightweight extension to your current workflow. Works with all common technologies in data science domain and integrates with other tools. It will take you 5 minutes to get started. | $8M | Series A | Apr 12, 2022 |  |
| Adaptyv Biosystems | Adaptyv Biosystems developing a protein engineering platform using cell-free synthetic biology and nanofluidics. | $2.7M | Pre-Seed | Feb 14, 2022 |  |
| dstack | A tool to train deep learning models independently from infrastructure |  | Pre-Seed | Jan 18, 2022 |  |
| Akhetonics | Akhetonics is a photonic computing company building all-optical processors for ultra-fast AI and high-performance computing. It is a deep-tech semiconductor company focused on photonic (light-based) computing hardware. It develops all-optical processors designed to accelerate AI, reasoning, and complex computational workloads. The company aims todeliver ultra-fast, energy-efficient computing beyond traditional electronic chips. |  | Pre-Seed | Dec 13, 2021 |  |

10 of 85 investments shown.

## Co-investors
- [Mountain Partners](https://shizune.co/investors/profile/mountain-partners) — VC Fund, 11 deals together
- [Born2Grow](https://shizune.co/investors/profile/born2grow) — VC Fund, 5 deals together
- [German Startups Group](https://shizune.co/investors/profile/german-startups-group) — VC Fund, 5 deals together
- [Runa Capital](https://shizune.co/investors/profile/runa-capital) — VC Fund, 5 deals together
- [HV Capital](https://shizune.co/investors/profile/holtzbrinck-ventures) — VC Fund, 4 deals together
- [APX](https://shizune.co/investors/profile/apxberlin) — VC Fund, 3 deals together

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## FAQ

### What does Rheingau Founders invest in?

Rheingau Founders invests primarily in Software, E-Commerce and Internet startups, most often at Seed and Series A stage. Most of the 85 investments tracked by Shizune back companies in Germany. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Rheingau Founders's check size?

Rheingau Founders typically joins rounds of $110k–$6.3M at Seed, $770k–$2.7M at Pre-Seed and $2.4M–$14M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Rheingau Founders participates in.

### How do I contact Rheingau Founders?

Public channels for Rheingau Founders include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at Rheingau Founders?

The team at Rheingau Founders includes Johann Reich (General Partner), Marius Weber (Partner) and Philipp Hartmann (Founder and Managing Partner). The Team section lists each member with their title, investment count and links.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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