X0306 4 2018-07-03 0001089143 COLLECTORS UNIVERSE INC CLCT 0001338936 Wallace Joseph John C/O COLLECTORS UNIVERSE, INC. P.O. BOX 6280 NEWPORT BEACH CA 92658 1 Chief Financial Officer Common Stock 2018-07-03 4 S 0 15620 14.3893 D 96160 D Sale of shares under 10(b)5-1 Plan to satisfy withholding taxes on shares that vested on June 30, 2018. /s/ Joseph J. Wallace 2018-07-05