ARCBEST CORP. BOARD TRANSITION (8-K)

ArcBest announced significant governance changes via Board action effective late October 2025:

• Board Expansion: Size increased to eleven members with the election of Chris T. Sultemeier as a new director.
• Lead Independent Director Change: Eduardo F. Conrado appointed Lead Independent Director, effective November 1, 2025, succeeding Steven L. Spinner (retiring Oct 31).
• Officer/Director Turnover:
  • Dr. Craig E. Philip notified the Board of his retirement, effective post-January 27, 2026 meeting.
  • CEO Judy R. Mc