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Deals 11 Sep 2025 · Netherlands

CMS advises Extantia on investment LeydenJar

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CMS has advised Extantia on its participation in a 13 Million EUR Series B Investment Round regarding LeydenJar. In parallel, LeydenJar secured 10 million EUR in customer funding from a leading US-based consumer electronics company for the development and installation of key production equipment.

LeydenJar primarily focuses on the development and production of advanced battery technology. Specifically, they are known for their innovative silicon anode technology, which significantly enhances the energy density and performance of lithium-ion batteries. This technology is particularly relevant for applications in electric vehicles, consumer electronics, and renewable energy storage systems. 

Founded in 2020, Extantia is a venture capital firm backing pioneers in climate. As a climate tech generalist, it invests in software and hardware solutions that address large, near-term market opportunities with the power to redefine industries.

The CMS team comprised Elmer Veenman and Dex Destombes.

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