X0306 4 2022-10-31 0000100378 TWIN DISC INC TWIN 0001341537 Knutson Jeffrey Scott TWIN DISC, INC. 1328 RACINE ST. RACINE WI 53403 1 VP Finance, CFO, Secr & Trea Common Stock 2022-10-31 4 F 0 881 13.38 D 107084 D Represents shares of common stock withheld by the issuer to satisfy tax obligations in connection with the vesting of restricted stock units granted to the Reporting Person pursuant to Rule 16b-3(d). /s/ Jeffrey S. Knutson 2022-11-02