Just found their "About the company" page: https://www.nitrokey.com/about
They say that they are totally self-financed and produce their Nitrokeys only in Germany to prevent supply chain attacks.
> We are present around the globe in all cultural environments. The threats, challenges, and fears you are likely to encounter are known to us; they are the source of our innovative thrust. Thanks to our world-wide network and regional offices, our presence and services know no borders or limits.
[0] https://web.archive.org/web/20110516233908/http://www.crypto...