X0306 4 2021-06-07 0 0000889331 LITTELFUSE INC /DE LFUS 0001217168 CHUNG T J C/O LITTELFUSE, INC. 8755 W. HIGGINS ROAD, SUITE 500 CHICAGO IL 60631 1 0 0 0 Common Stock 2021-06-07 5 J 0 14 257.76 A 18893 D Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Hans Weinburger, by power of attorney 2021-06-07