SAN DIEGO & DENVER--(BUSINESS WIRE)--Castle Creek Capital, an alternative asset management firm focused on the financial services sector, with a specialization in the community banking industry, announced today that Castle Creek managed funds have acquired, from legacy stockholders, $40 million of common stock in FirstSun Capital Bancorp (the “Company” or “FirstSun”). In accordance with an agreement between affiliates of Castle Creek Capital and FirstSun, subject to satisfying all legal and reg.