TG Therapeutics, Inc. (NASDAQ: TGTX), today announced that Owen A. O’Connor, MD, PhD, has joined the Company as Chief Scientific Officer. Dr. O’Connor brings extensive scientific experience in developing drug candidates in oncology and hematology, and most recently served as a Professor of Medicine and Experimental Therapeutics, the Director of the Center for Lymphoid Malignancies, and Co-Program Director of the Lymphoid Development and Malignancy Pro