X0306 4 2013-06-03 0 0001466538 COWEN GROUP, INC. COWN 0001275922 SOLOMON JEFFREY M COWEN GROUP, INC. 599 LEXINGTON AVENUE NEW YORK NY 10022 1 1 1 0 CEO, Cowen and Company, LLC Class A Common Stock 2013-06-03 4 A 0 250000 A 1550815 D Grant of restricted stock units for no monetary consideration. The restricted stock units will vest with respect to 50% on May 15, 2014 and 50% on April 29, 2015. /s/ Jeffrey M. Solomon 2013-06-05