X0306 4 2019-01-30 0001228627 REXAHN PHARMACEUTICALS, INC. RNN 0001661400 Nolan Lisa C/O REXAHN PHARMACEUTICALS, INC. 15245 SHADY GROVE ROAD, SUITE 455 ROCKVILLE MD 20850 true Chief Business Officer Common Stock 2019-01-30 4 P 0 20000 0.648 A 21625 D The price of $0.648 per share represents a weighted average of purchase prices ranging from $0.635 to $0.650 per share. The reporting person undertakes to provide upon request by the Commission staff, the issuer, or any security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price /s/ Douglas J. Swirsky, as attorney-in-fact for Lisa Nolan 2019-01-31