X0508 4 2025-08-12 0001012019 RUSH ENTERPRISES INC \TX\ RUSHA 0002015783 Wilder Jason 555 IH 35 SOUTH, SUITE 500 NEW BRAUNFELS TX 78130 1 Chief Operating Officer 0 Class B Common Stock 2025-08-12 4 S 0 4980 55.5527 D 79692 D This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $55.5459 to $56.1650. The reporting person undertakes to provide Rush Enterprises, Inc., any security holder of Rush Enterprises, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Includes shares of unvested restricted stock. /s/ Matthew D. Willcox, as Attorney in Fact for Jason Wilder 2025-08-13