Exhibit 99.1 Investor Relations Contact: David Humphrey Media Contact: Autumnn Mahar Title: Vice President – Investor Relations Title: Director External Phone: 479-785-6200 Communications and Public Relations Email: dhumphrey@arcb.com Phone: 479-494-8221 Email: amahar@arcb.com ArcBest Announces First Quarter 2024 Results Continued focus on service excellence, disciplined pricing, growth, and efficiency FORT SMITH, Arkansas, April 30, 2024 — ArcBest® (Nasdaq: ARCB), a leader in supply chain logistics, today ...