# Marc Sieberger > Marc Sieberger is a seed investor at Freigeist Capital (Cologne) backing Dental and Medical. See 4 investments, check sizes, portfolio. Updated Aug 2026. - Type: Angel Investor - Fund: [Freigeist Capital](https://shizune.co/investors/profile/e42-ventures) - Location: Cologne, Germany - Total investments: 4 - Last investment: Feb 2026 - Lead investor: 50% - Last updated: Aug 2026 - LinkedIn: http://www.linkedin.com/in/sieberger - X (Twitter): http://twitter.com/sieberger - Website: https://x.com/sieberger Marc Sieberger is a seed investor at Freigeist Capital in Cologne focused on Dental and Medical. Serial founder with a passion for creating disruptive business models and a deep understanding how to build and scale organizations & teams ## Investment focus ### Industry | Industry | Investments | Share | | --- | --- | --- | | Dental | 1 | 25% | | Medical | 1 | 25% | | Hardware | 1 | 25% | | Robotics | 1 | 25% | | Software | 1 | 25% | 13 industries tracked in total. ### Stage | Stage | Investments | Share | | --- | --- | --- | | Seed | 1 | 25% | | Pre-Seed | 1 | 25% | | Funding Round | 1 | 25% | ## Investments | Company | Description | Amount | Stage | Date | Website | | --- | --- | --- | --- | --- | --- | | Zahnheld | Zahnheld is focusing on dental care that makes sense, natural cosmetic toothpaste, and toothbrushes that are worth their price. | | | Feb 24, 2026 | | | RobCo | RobCo is a company that develops modular industrial robotics systems combined with AI-driven software to automate manual and repetitive tasks in manufacturing environments. It provides a platform that includes configurable robotic hardware, no-code programming tools, AI-powered vision systems, and digital simulation to plan, test, and deployautomation workflows across applications like machine loading, palletizing, and materials handling. The company’s solutions are designed to be flexible and scalable so manufacturers can adapt robot configurations as production requirements evolve. RobCo also offers tools for remote management, predictive maintenance, and integration with existing equipment to support continuous operation. Its products aim to simplify the adoption of robotics by reducing the need for specialized programming and enabling simulation-based validation before physical deployment. | $3.5M | Seed | Jun 07, 2021 | | | RobCo | RobCo is a company that develops modular industrial robotics systems combined with AI-driven software to automate manual and repetitive tasks in manufacturing environments. It provides a platform that includes configurable robotic hardware, no-code programming tools, AI-powered vision systems, and digital simulation to plan, test, and deployautomation workflows across applications like machine loading, palletizing, and materials handling. The company’s solutions are designed to be flexible and scalable so manufacturers can adapt robot configurations as production requirements evolve. RobCo also offers tools for remote management, predictive maintenance, and integration with existing equipment to support continuous operation. Its products aim to simplify the adoption of robotics by reducing the need for specialized programming and enabling simulation-based validation before physical deployment. | $3.5M | Seed | Jun 07, 2021 | | | RobCo | RobCo is a company that develops modular industrial robotics systems combined with AI-driven software to automate manual and repetitive tasks in manufacturing environments. It provides a platform that includes configurable robotic hardware, no-code programming tools, AI-powered vision systems, and digital simulation to plan, test, and deployautomation workflows across applications like machine loading, palletizing, and materials handling. The company’s solutions are designed to be flexible and scalable so manufacturers can adapt robot configurations as production requirements evolve. RobCo also offers tools for remote management, predictive maintenance, and integration with existing equipment to support continuous operation. Its products aim to simplify the adoption of robotics by reducing the need for specialized programming and enabling simulation-based validation before physical deployment. | $3.5M | Pre-Seed | Jun 07, 2021 | | 4 of 4 investments shown. ## Co-investors - [Freigeist Capital](https://shizune.co/investors/profile/e42-ventures) — VC Fund, 1 deal together ## About Freigeist Capital VC Fund · Bonn, Germany Freigeist Capital is a venture capital firm that specializes in early-stage venture investments. It was founded by Marc Sieberger, Frank Thelen, and Alex Koch. 3 contacts available at Freigeist Capital. | Name | Title | Profile | | --- | --- | --- | | Alex Koch | Founder & CTO | https://shizune.co/investors/profile/alex-koch | | Frank Thelen | Founder & CEO | https://shizune.co/investors/profile/frank-thelen | | Marc Sieberger | Founder & COO | https://shizune.co/investors/profile/marc-sieberger | ## Similar investors ### Similar industry - [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund - [SOSV](https://shizune.co/investors/profile/sosv) — VC Fund - [Bpifrance](https://shizune.co/investors/profile/bpifrance) — 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 - [Climate Angel Investors in Germany](https://shizune.co/investors/climate-angel-investors-germany) - [Hardware Angel Investors in Germany](https://shizune.co/investors/hardware-angel-investors-germany) ## FAQ ### What does Marc Sieberger invest in? Marc Sieberger invests primarily in Dental, Medical and Hardware startups, most often at Seed and Pre-Seed stage. Most of the 4 investments tracked by Shizune back companies in Germany. The Investment Focus section breaks down every industry, stage and country in the portfolio. ### When did Marc Sieberger last invest? The most recent investment recorded for Marc Sieberger closed in Feb 2026. Shizune tracks 4 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly. ### 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. 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