GEEN Holding a.s. is a European company founded in 2009 that specializes in renewable energy investments and operations. It focuses on sustainable energy solutions through the construction and operation of hydropower, wind, solar power plants, and biomass combustion plants. The company also provides energy audits and engages in the purchase and sale of electricity and gas for households and businesses. With a portfolio of 21 power plants and an installed capacity of 33 MW, GEEN Holding serves over 50,000 customers across four countries.

GEEN Biotechnology, based in Palo Alto, California, is a synthetic biology company that develops advanced genetic technologies and master cells for industrial biomolecule production. The company works on genome editing technologies, including CRISPR/Cas9, and engineers yeast and minimal cells for various biotech applications. GEEN Biotechnology partners with industrial biotech companies and pharmaceutical developers to provide customized genetic engineering solutions.