On May 4, 2021, Aptose Biosciences Inc. announced that Dr. Jotin Marango was appointed as Chief Financial Officer, in addition to his Chief Business Officer role. Dr. Marango was also appointed to serve as the Company’s Chief Accounting Officer on May 4, 2021, taking over those duties from the Company’s Chief Executive Officer, Dr. William Rice, who served as the interim Chief Accounting Officer following Gregory Chow’s departure on March 26, 2021. Dr. Marango, joined Aptose as Senior Vice President and Chief Business Officer in June 2019 and Chief Business and Strategy Officer in January 2021. Prior to joining Aptose, from 2017 to 2019, Dr. Marango was a managing director and senior research analyst at Roth Capital Partners covering biotechnology and therapeutics. Dr. Marango joined Roth from H.C. Wainwright & Co., where he worked from 2015 to 2017 and covered hematology, oncology, and pulmonary therapeutics, with a focus on epigenetic and molecularly targeted therapies. Dr. Marango began his career in equity research with Collins Stewart/Canaccord Genuity in 2010. Previously, Dr. Marango also served as Chief Operating Officer at the Samuel Waxman Cancer Research Foundation from 2012 to 2015, where he oversaw academic collaborations in translational therapeutics, as well as venture philanthropy initiatives in drug development.