X0609 4 2026-08-11 0000894405 ARCBEST CORP /TX/ ARCB 0001640600 Anderson Dennis L II false 8401 MCCLURE DRIVE FORT SMITH AR 72916 false true false false Chief Innovation Officer 0 Common Stock, par value $0.01 per share 2026-08-11 4 S 0 3347 134.87 D 16750 D Common Stock, par value $0.01 per share 2026-08-11 4 S 0 2103 135.63 D 14647 D Common Stock, par value $0.01 per share 2026-08-11 4 G 0 1950 0 D 12697 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.430 to $135.425, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.470 to $135.730, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range. /s/ Dennis L. Anderson II 2026-08-12