X0306 4 2021-02-01 0000100378 TWIN DISC INC TWIN 0001264628 DOAR MICHAEL 491 DYLAN DRIVE CARMEL IN 46032 1 Common Stock 2021-02-01 4 A 0 1764 8.858 A 71879 D Represents restricted stock issued in lieu of quarterly cash retainer, pursuant to an irrevocable election made in November 2020 under the Twin Disc, Incorporated 2020 Stock Incentive Plan for Non-Employee Directors. Shares will vest on the first anniversary of the date of issuance. /s/ Michael Doar 2021-02-02