ARCBEST CORP /DE/

We are pleased to furnish proxy materials to our stockholders electronically, rather than mailing individual printed copies of those materials. Electronic delivery makes our annual meeting more environmentally friendly and reduces printing and distribution costs. Accordingly, on or about March 13, 2026, we began mailing a Notice of Internet Availability to stockholders entitled to vote at the Annual Meeting containing instructions on how you may access and review the proxy materials and how to cast your vote online as well as instructions on how to obtain paper copies of our materials. If you received a Notice of Internet Availability of Proxy Materials by mail, you will not receive a printed copy of the proxy materials unless you request one. There is no charge to you for requesting a copy. If you would like to receive an extra copy of the Annual Report or this Proxy Statement, we will send a copy to you by mail upon request. To submit a materials request, visit our website at investors.arcb.com or call our toll-free telephone number 800-961-9744. Each document is also available in digital form for download or review in the “Investor Relations” section of our website at investors.arcb.com.