X0508 4 2024-08-04 0000100378 TWIN DISC INC TWIN 0001341537 Knutson Jeffrey Scott TWIN DISC, INC. 222 EAST ERIE ST., SUITE 400 MILWAUKEE WI 53202 1 VP Finance, CFO, Secr & Trea 0 COMMON STOCK 2024-08-04 4 A 0 12571 12.62 A 156536 D COMMON STOCK 2024-08-04 4 F 0 5908 12.62 D 150628 D Vesting of Restricted Stock Units for no cash consideration pursuant to the Twin Disc, Incorporated 2018 Long-Term Incentive Compensation Plan as amended. Represents shares of common stock withheld by the issuer to satisfy tax obligations in connection with the vesting of performance stock granted to the Reporting Person pursuant to Rule 16b-3(d). /s/ Jeffrey S. Knutson 2024-08-06