Material Event Form 8 K

On September 24, 2024, Acadia Healthcare Company, Inc. ("Acadia") received a voluntary request for information from the United States Attorney's Office for the Southern District of New York as well as a grand jury subpoena from the United States District Court for the Western District of Missouri (W.D.Mo.) related to its admissions, length of stay and billing practices. In addition, Lakeland Hospital Acquisition, LLC, a subsidiary of Acadia, also received a grand jury subpoena from W.D.Mo. on the same day regarding similar subject matter. Acadia anticipates receiving similar document requests from the U.S. Securities and Exchange Commission and may receive additional document requests from other governmental agencies. Acadia is fully cooperating with authorities and, at this time, cannot speculate on whether the outcome of these investigations will have any impact on its business or operations.

Cautionary Statements Regarding Forward-Looking Statements

The foregoing discussion of the investigations contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, which are based on management's current beliefs and expectations and are subject to substantial risks and uncertainties, both known and unknown, that could cause the Company's future results, performance or achievements to differ significantly from that expressed or implied by such forward-looking statements. You can identify these forward-looking statements by the use of words such as "should," "expect," "anticipate," "estimate," "target," "may," "project," "guidance," "intend," "plan," "believe" and other words and terms of similar meaning and expression. The reader should not place undue reliance on forward-looking statements, which speak only as of the date they are first made. Except to the extent required by law, the Company undertakes no obligation to publicly update forward-looking statements. Investors should read the important risk factors described in the Company's most recent Annual Report on Form 10-K,Quarterly Reports on Form 10-Qand Current Reports on Form 8-Kfiled with the U.S. Securities and Exchange Commission.