 SAN ANTONIO, Oct. 14, 2021 GLOBE NEWSWIRE -- Rush Enterprises, Inc. NASDAQ: RUSHA and RUSHB, which operates the largest network of commercial vehicle dealerships in North America, announced today that it has appointed Troy Clarke to serve as a member of its Board of Directors, effectively immediately. The company also announced today that James Underwood will retire from the Board of Directors in early 2022; the effective date of such retirement has not been determined yet. 