Exhibit 99.1 Contact: Rush Enterprises, Inc., San Antonio Steven L. Keller, 830-302-5226 RUSH ENTERPRISES, INC. REPORTS FIRST QUARTER 2024 RESULTS, ANNOUNCES $0.17 PER SHARE DIVIDEND ● Revenues of $1.9 billion, net income of $71.6 million ● Earnings per diluted share of $0.88 ● Challenging market conditions impact Class 8 new truck sales and overall financial performance ● Absorption ratio 130.1% ● Board declares cash dividend of $0.17 per share of Class A and Class B common stock SAN ANTONIO, Texas, April ...