X0609 4 2026-08-05 0000100378 TWIN DISC INC TWIN 0001341537 Knutson Jeffrey Scott false TWIN DISC, INC. 222 EAST ERIE ST., SUITE 400 MILWAUKEE WI 53202 1 VP Finance, CFO, Secr & Trea 0 COMMON STOCK 2026-08-05 4 F 0 7600 23.336 D 153363 D COMMON STOCK 2026-08-05 4 A 0 38638 24.01 A 192001 D COMMON STOCK 2026-08-05 4 F 0 18158 24.01 D 173843 D COMMON STOCK 2026-08-05 4 A 0 8734 24.01 A 182577 D Represents shares of common stock withheld by the issuer to satisfy tax obligations in connection with the vesting of restricted stock granted to the Reporting Person pursuant to Rule 16b-3(d). Vesting of Performance Stock for no cash consideration pursuant to the Twin Disc, Incorporated 2021 Long-Term Incentive Compensation Plan. 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). Award of Restricted Stock for no cash consideration pursuant to the Twin Disc, Incorporated 2021 Omnibus Incentive Plan. Grant will vest 100% on 8/5/2029. /s/ Jeffrey S. Knutson 2026-08-07