Alliance Resource Partners, L.P. 2021 Schedule K-3 Now Available

Alliance Resource Partners, L.P. (NASDAQ "ARLP") today announced that its 2021 Schedule K-3 reflecting items of international tax relevance is available online. Unitholders requiring this information may access their Schedule K-3 at www.taxpackagesupport.com/arlp.

A limited number of unitholders (primarily foreign unitholders, unitholders computing a foreign tax credit on their tax return and certain corporate and/or partnership unitholders) may need the detailed information disclosed on Schedule K-3 for their specific reporting requirements. To the extent Schedule K-3 is applicable to your federal income tax return filing needs, we encourage you to review the information contained on this form and refer to the appropriate federal laws and guidance or consult with your tax advisor.

To receive an electronic copy of your Schedule K-3 via email, unitholders may call Tax Package Support toll free at (800) 485-6875.

About Alliance Resource Partners, L.P.

ARLP is a diversified energy company that is currently the largest coal producer in the eastern United States. ARLP also generates operating and royalty income from mineral interests it owns in strategic coal and oil & gas producing regions in the United States. In addition, ARLP is positioning itself as an energy provider for the future by leveraging its core technology and operating competencies to make strategic investments in the fast-growing energy and infrastructure transition.

News, unit prices and additional information about ARLP, including filings with the Securities and Exchange Commission ("SEC"), are available at http://www.arlp.com. For more information, contact the investor relations department of ARLP at (918) 295-7674 or via e-mail at investorrelations@arlp.com.

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