Mine Safety Disclosure (Form 8-K)

ITEM 1.04 MINE SAFETY - REPORTING OF SHUTDOWNS AND PATTERNS OF VIOLATIONS

On April 1, 2026, River View Coal LLC, an indirect subsidiary of Alliance Resource Partners, L.P. (the "Partnership"), received an imminent danger order from the Mine Safety and Health Administration ("MSHA") under Section 107(a) of the Federal Mine Safety and Health Act of 1977 at the River View Mine (Mine ID No. 15-19374).

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The order related to maintenance work on a shuttle car that MSHA determined was not adequately blocked against motion. Miners were removed from the affected area, corrective actions were taken, and MSHA terminated the order later the same day. No injuries occurred. The Partnership reserves the right to contest the order and any related citation or proposed assessment.

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