Catherine L. Sellman Principal, Aperimus Capital Catherine L. Sellman is the principal of Aperimus Capital, the firm she founded in 2009 after working for Atlas Capital in Dallas, Texas and Barrington Partners in Santa Monica, California. Her firm manages investment partnerships on behalf of institutional clients and her investment research primarily focuses on companies in financial distress. Prior to her investment career, Catherine was an environmental engineer. Catherine earned a B.A. in Engineering Sciences from Dartmouth College in Hanover, New Hampshire and an MBA from the Anderson School of Business at UCLA.