Exhibit 99.1 Contact: Rush Enterprises, Inc., New Braunfels Steven L. Keller, 830-302-5226 RUSH ENTERPRISES, INC. REPORTS SECOND QUARTER 2025 RESULTS, ANNOUNCES 0.19 PER SHARE DIVIDEND NEW BRAUNFELS, Texas, July 30, 2025 — Rush Enterprises, Inc. (NASDAQ: RUSHA & RUSHB), which operates the largest network of commercial vehicle dealerships in North America, today announced that for the quarter ended June 30, 2025, the Company achieved revenues of 1.931 billion and net income of $72.4 million, or$0.90 per d ...