2. Carbon $260M Round: Series E Description: Carbon is reinventing how polymer products are designed, engineered, manufactured, and delivered, towards a digital and sustainable future. Founded by Dr. Joseph M. DeSimone and Philip DeSimone in 2013, Carbon is backed by investors that include Autodesk, Baillie Gifford, GV, Johnson & Johnson Innovation, and Sequoia Capital. Carbon is headquartered in Redwood City.