# SquareOne Venture Capital

> SquareOne Venture Capital is a VC fund backing Software. See 67 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Berlin, Germany
- Total investments: 67
- Last investment: Jun 2026
- Lead investor: 34%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/squareone-vc/
- X (Twitter): https://twitter.com/SquareOne_vc
- Website: https://squareone.vc/

SquareOne Venture Capital is a VC fund in Berlin focused on Software and Artificial Intelligence. SquareOne is a Berlin-based venture capital firm. Established in 2010 and funded only with management money, SquareOne has built its way up to become a leading tech investor in Berlin.SquareOne invests in European early-stage B2B Software companies, acting both as lead or co-lead investor. Their focus is on sectors where they can add the mostvalue to your business: Enterprise Software, Software as a Service, Industry 4.0, Deep-tech (Robotics, Security, IoT, AI/ML, NLP, DevTools..)Paua provides a broad range of services and the team is truly committed in being the best partner for entrepreneurs, aiming to be the bridge between new businesses and the corporate world.

## Contacts

5 contacts available for SquareOne Venture Capital. Shizune tracks 6 team members at SquareOne Venture Capital. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/squarone-vc?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $1.4M–$7.4M |
| Series A | $4.2M–$20M |
| Series B | $5M–$30M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 21 | 31% |
| Artificial Intelligence | 7 | 10% |
| SaaS | 6 | 9% |
| Machine Learning | 5 | 7% |
| Information Technology | 5 | 7% |

101 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 26 | 39% |
| Series A | 16 | 24% |
| Series B | 7 | 10% |
| Pre-Seed | 5 | 7% |
| Funding Round | 2 | 3% |

9 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Germany | 23 | 34% |
| United States | 6 | 9% |
| Poland | 2 | 3% |
| Sweden | 2 | 3% |
| Italy | 1 | 1% |

10 countries tracked in total.

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Charlotte Baumhauer | Principal | 2 | https://shizune.co/investors/profile/charlotte-baumhauer |
| Christian Buchenau | Co-Founder, Managing Director & Partner | 25 | https://shizune.co/investors/profile/christian-buchenau |
| Christophe Defforey | Co-Founding Partner | 0 | https://shizune.co/investors/profile/christophe-defforey |
| Georg Stockinger | Partner | 24 | https://shizune.co/investors/profile/georg-stockinger |
| Levent Altunel | Investment Associate | 0 | https://shizune.co/investors/profile/levent-altunel-7c12 |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Graph Therapeutics | Graph is a precision immunology techbio that leverages perturbation modeling from primary patient cell samples combined with multi-omics data to deliver transformative targeted therapies and biomarkers for immune-driven diseases. Graph believes that due to an incomplete understanding of complex immune-mediated diseases, millions of people are leftwithout adequate treatment options - and AI trained with complex disease data can solve this. | $5M | Seed | Jun 22, 2026 |  |
| Flinn | Our vision is to make high-quality health products accessible for everyone. We will achieve this by enabling creators of health products to build and operate high-quality products with 10x efficiency. We are putting our initial focus on automating compliance and regulatory tasks for medical device manufacturers. Our product offering includesAI-enabled automation of major parts of the data collection, aggregation, evaluation, and reporting for post-market surveillance activities. | $20M | Series A | Feb 19, 2026 |  |
| Ultralytics | Ultralytics is the creator of YOLO, the world’s leading open-source real-time vision AI. Trusted by millions of developers, researchers, and enterprises globally, Ultralytics delivers state-of-the-art object detection, segmentation, and tracking models that are lighter, faster, and more accurate.Our mission is to democratize access to advancedAI, offering open-source tools alongside enterprise solutions tailored for industries such as healthcare, security, manufacturing, and autonomous systems.Backed by a global community, Ultralytics combines cutting-edge research with practical deployment to make AI accessible, scalable, and impactful. | $30M | Series A | Sep 17, 2025 |  |
| C1 Green Chemicals | Circular Carbon Chemistry is a chemical production company. They offer services that include e-fuels, quantum chemistry, circular economy, CO2 recycling, catalysis, green methanol, C1 chemistry, and carbon chemistry. |  | Seed | Mar 19, 2025 |  |
| C1 Green Chemicals | Circular Carbon Chemistry is a chemical production company. They offer services that include e-fuels, quantum chemistry, circular economy, CO2 recycling, catalysis, green methanol, C1 chemistry, and carbon chemistry. | $16.4M |  | Mar 19, 2025 |  |
| Phase | Phase is a visual and intuitive digital design tool, reworked for the new age. | $13M | Venture - Series Unknown | Feb 13, 2025 |  |
| PartsCloud | PartsCloud is the operating system of spare parts logistics. We are giving every company the means to support their customers with the spare parts they need when they need them by offering them the necessary digital tools and connecting them to a portfolio of logistics service providers. | $5.2M | Seed | Feb 05, 2025 |  |
| Zuriq | Zuriq offers scalable quantum computing hardware based on trapped ions. | $4.2M | Seed | Jan 23, 2025 |  |
| Graph Therapeutics | Graph is a precision immunology techbio that leverages perturbation modeling from primary patient cell samples combined with multi-omics data to deliver transformative targeted therapies and biomarkers for immune-driven diseases. Graph believes that due to an incomplete understanding of complex immune-mediated diseases, millions of people are leftwithout adequate treatment options - and AI trained with complex disease data can solve this. | $3.1M | Pre-Seed | Jan 09, 2025 |  |
| Flinn | Our vision is to make high-quality health products accessible for everyone. We will achieve this by enabling creators of health products to build and operate high-quality products with 10x efficiency. We are putting our initial focus on automating compliance and regulatory tasks for medical device manufacturers. Our product offering includesAI-enabled automation of major parts of the data collection, aggregation, evaluation, and reporting for post-market surveillance activities. | $6.7M | Seed | Sep 30, 2024 |  |

10 of 67 investments shown.

## Co-investors
- [SquareOne](https://shizune.co/investors/profile/paua-ventures) — VC Fund, 43 deals together
- [Earlybird Venture Capital](https://shizune.co/investors/profile/earlybird-venture-capital) — VC Fund, 5 deals together
- [Speedinvest](https://shizune.co/investors/profile/speedinvest) — VC Fund, 5 deals together
- [Cherry Ventures](https://shizune.co/investors/profile/cherry-ventures) — VC Fund, 4 deals together
- [EQT Ventures](https://shizune.co/investors/profile/eqtventures) — VC Fund, 4 deals together
- [Peak](https://shizune.co/investors/profile/peak-capital) — VC Fund, 4 deals together

## Similar investors

### Similar industry
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [SV Angel](https://shizune.co/investors/profile/sv-angel) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

### Similar country
- [HTGF (High-Tech Gruenderfonds)](https://shizune.co/investors/profile/high-tech-gr%C3%BCnderfonds) — VC Fund
- [HV Capital](https://shizune.co/investors/profile/holtzbrinck-ventures) — VC Fund
- [IBB Ventures](https://shizune.co/investors/profile/ibb) — VC Fund

## Featured in investor lists
- [Media (entertainment) Investors in Germany](https://shizune.co/investors/media-entertainment-investors-germany)
- [Media (entertainment) VC Funds in Germany](https://shizune.co/investors/media-entertainment-vc-funds-germany)
- [Media (entertainment) VC Funds in Germany](https://shizune.co/investors/media-entertainment-vc-funds-germany)
- [Marketplace Investors in Poland](https://shizune.co/investors/marketplace-investors-poland)
- [Media (entertainment) Investors in Germany](https://shizune.co/investors/media-entertainment-investors-germany)
- [Machine Learning Investors in Germany](https://shizune.co/investors/machine-learning-investors-germany)

## FAQ

### What does SquareOne Venture Capital invest in?

SquareOne Venture Capital invests primarily in Software, Artificial Intelligence and SaaS startups, most often at Seed and Series A stage. Most of the 67 investments tracked by Shizune back companies in Germany. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is SquareOne Venture Capital's check size?

SquareOne Venture Capital typically joins rounds of $1.4M–$7.4M at Seed, $4.2M–$20M at Series A and $5M–$30M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds SquareOne Venture Capital participates in.

### How do I contact SquareOne Venture Capital?

Public channels for SquareOne Venture Capital 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 SquareOne Venture Capital?

The team at SquareOne Venture Capital includes Charlotte Baumhauer (Principal), Christian Buchenau (Co-Founder, Managing Director & Partner) and Christophe Defforey (Co-Founding Partner), among 6 team members tracked by Shizune. 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.

# About Shizune
Shizune.co is an investor database. Core features:
- 48,091 startup investors (angels, VCs, accelerators, and others)
- Email, phone, LinkedIn (for intros), socials, and other contact data
- Updated daily from public funding news
- CSV and Excel export

The User can access the full database FOR FREE after signing up: shizune.co