Meinolf Heptner

Investor

📍 Germany, Germany🔄 Updated September 2026💼 5 investments📅 20 years investing🗓 Last invested Jun 2026
Angel investor🌍 GermanyInvested this quarter
5
Total investments
2
Early stage
0
Mid stage
1
Late stage
20y
Years active

Portfolio

5 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Jun 2026
Precise freight measurements – without additional hardware
Shareholder
Aug 2024
Leanr is a web-based tool to create, manage, review and share presentations of any kind. Founded by a diverse team with backgrounds in software development, banking and consulting, our focus is to enable teams to seamlessly work together in all presentation-related workflows that nowadays are everyday tasks in companies of any size. Legal notice: https://leanr.one/impressum/ Leanr Solutions GmbH Hallgartenstr. 17 60389 Frankfurt am Main Germany 08654-3096297 info@leanr.one Managing Director (Geschäftsführer und redaktionell Verantwortlicher) Christian Dzaack Commercial Register Amtsgericht Frankfurt am Main, HRB 120084 VAT-ID DE332585976 We assume no liability for the content of any websites linked to us. The owners of these linked websites take sole responsibility for their content.
Shareholder
Jan 2022
The 3ngage platform delivers Interactive Product Simulations that let users experience the product online as if they had it in their hands. 3ngage lets buyers and users test-drive a product at a distance, in any digital channel. 3ngage records behavior data, to let customers know how users interact with their products. 3ngage makes it easy to scale such product experiences across multiple use cases, from sales to training and customer support.
Shareholder
2008
At Photon Energy Group, we believe that clean energy and water must be available to everyone. We develop and deploy technology to provide these fundamentals and help build a thriving, sustainable world. Photon Energy delivers solar power solutions that cover the entire lifecycle of photovoltaic projects. Since its foundation in 2008, Photon Energy has built and commissioned solar power plants with a combined capacity of over 125 MWp and currently provides operations and maintenance services for over 380 MWp worldwide. As an independent power producer, Photon Energy’s portfolio includes power plants with a combined capacity of 97.6 MWp, with an additional 912 MWp currently under development. Photon Water provides water treatment and management solutions that help to ensure clean water is accessible in any environment. Photon Water’s services include the management of wells and other resources, and employ state-of-the-art technology, including a unique nanoremediation solution to combat the growing problem of PFAS contamination in groundwater. We take a holistic approach to our work, within our companies and as a group, offering solutions that can be delivered separately or as an integrated package. This allows us to meet the complete needs of our customers and takes us closer to a world where energy and water – the fundamentals of life – are clean, safe and accessible to all. Photon Energy N.V. is the holding company for Photon Energy Group, and is listed on the Warsaw, Prague and Frankfurt Stock Exchanges. We are headquartered in Amsterdam, with offices in Australia and across Europe. To learn more, please visit our website.
Shareholder
2006
Our Mission? Perfect Surfaces. Perfect Shapes. We combine laser process technology, software, machine vision, automation and peripherals with turnkey-installation and lifecycle support for maintenance, repair and upgrades. We enable mission-critical high volume production of next generation consumer devices, automotive parts, solar cells or medical devices. We work for the category leaders in our niches. Our customers include virtually all leading manufacturers of technical glass, tires and numerous Fortune 500 companies from automotive suppliers and OEMs. We have a deep understanding of micromachining solutions for cutting and drilling of brittle materials such as glass or semiconductors, as well as solutions for thin-film ablation and cleaning. Established in 2006 we now employ a team of about 250 experts in our headquarter in Alsdorf (Germany), Krailling (near Munich, Germany) as well as satellite offices and service hubs in the US, China and Taiwan. Our international customer base in over 40 countries is being supported by a network of subsidiary offices and agencies for sales and technical service. See www.4jet.de for more information.
Experience · 5 entries
All (5)
Investments (5)
2026
Investor
Jun 2026
Precise freight measurements – without additional hardware
2024
Shareholder
Aug 2024
Leanr is a web-based tool to create, manage, review and share presentations of any kind. Founded by a diverse team with backgrounds in software development, banking and consulting, our focus is to enable teams to seamlessly work together in all presentation-related workflows that nowadays are everyday tasks in companies of any size. Legal notice: https://leanr.one/impressum/ Leanr Solutions GmbH Hallgartenstr. 17 60389 Frankfurt am Main Germany 08654-3096297 info@leanr.one Managing Director (Geschäftsführer und redaktionell Verantwortlicher) Christian Dzaack Commercial Register Amtsgericht Frankfurt am Main, HRB 120084 VAT-ID DE332585976 We assume no liability for the content of any websites linked to us. The owners of these linked websites take sole responsibility for their content.
2022
Shareholder
Jan 2022
The 3ngage platform delivers Interactive Product Simulations that let users experience the product online as if they had it in their hands. 3ngage lets buyers and users test-drive a product at a distance, in any digital channel. 3ngage records behavior data, to let customers know how users interact with their products. 3ngage makes it easy to scale such product experiences across multiple use cases, from sales to training and customer support.
2008
Shareholder
2008
At Photon Energy Group, we believe that clean energy and water must be available to everyone. We develop and deploy technology to provide these fundamentals and help build a thriving, sustainable world. Photon Energy delivers solar power solutions that cover the entire lifecycle of photovoltaic projects. Since its foundation in 2008, Photon Energy has built and commissioned solar power plants with a combined capacity of over 125 MWp and currently provides operations and maintenance services for over 380 MWp worldwide. As an independent power producer, Photon Energy’s portfolio includes power plants with a combined capacity of 97.6 MWp, with an additional 912 MWp currently under development. Photon Water provides water treatment and management solutions that help to ensure clean water is accessible in any environment. Photon Water’s services include the management of wells and other resources, and employ state-of-the-art technology, including a unique nanoremediation solution to combat the growing problem of PFAS contamination in groundwater. We take a holistic approach to our work, within our companies and as a group, offering solutions that can be delivered separately or as an integrated package. This allows us to meet the complete needs of our customers and takes us closer to a world where energy and water – the fundamentals of life – are clean, safe and accessible to all. Photon Energy N.V. is the holding company for Photon Energy Group, and is listed on the Warsaw, Prague and Frankfurt Stock Exchanges. We are headquartered in Amsterdam, with offices in Australia and across Europe. To learn more, please visit our website.
2006
Shareholder
2006
Our Mission? Perfect Surfaces. Perfect Shapes. We combine laser process technology, software, machine vision, automation and peripherals with turnkey-installation and lifecycle support for maintenance, repair and upgrades. We enable mission-critical high volume production of next generation consumer devices, automotive parts, solar cells or medical devices. We work for the category leaders in our niches. Our customers include virtually all leading manufacturers of technical glass, tires and numerous Fortune 500 companies from automotive suppliers and OEMs. We have a deep understanding of micromachining solutions for cutting and drilling of brittle materials such as glass or semiconductors, as well as solutions for thin-film ablation and cleaning. Established in 2006 we now employ a team of about 250 experts in our headquarter in Alsdorf (Germany), Krailling (near Munich, Germany) as well as satellite offices and service hubs in the US, China and Taiwan. Our international customer base in over 40 countries is being supported by a network of subsidiary offices and agencies for sales and technical service. See www.4jet.de for more information.
Investment activity
2006–2026 · 5 investments
2006120081202212024120261
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