Founder of Castle Creek Financial LLC and Castle Creek Capital LLC, William John Ruh is a businessperson who has been at the head of 7 different companies and presently holds the position of President for Ruh Advisory Corp., President for Cairn Capital Management Ltd., Chairman of First Chicago Bancorp and Chief Executive Officer & Chief Financial Officer at Empyr, Inc.

He is also on the board of Mocapay, Inc., United States Sailing Association, Inc., BIM Networks, Inc. and nCino, Inc. and Chairman for United States Sailing Foundation.

He previously occupied the position of Managing Principal at CCM Capital Opportunities Fund LP, Managing Principal at Castle Creek Capital LLC and Managing Principal at Castle Creek Financial LLC (a subsidiary of Castle Creek Capital LLC), Managing Principal at Aequitas Capital Management, Inc., Chairman at Ceres Group, Inc., Chairman of Indivos Corp., Director at Regency Bancorp (California), Vice President for Mabon Securities Corp. and Commercial Lending Officer at First National Bank of Chicago (Illinois).

He received an undergraduate degree from SUNY Maritime College and an MBA from The Fuqua School of Business.