SCHEDULE 13D

Acadia Healthcare Co Inc

Common Stock, par value $0.01 per share · CUSIP: 00404A109

Event date: 2025-09-24

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Khrom Investments Fund, LPReported CIK 0001586094

  Shares: 5,037,448.00 · Class: 5.5%

• Khrom Capital Management LLCReported CIK 0001877963

  Shares: 5,037,448.00 · Class: 5.5%

• Eric KhromReported CIK 0002089455

  Shares: 5,044,376.00 · Class: 5.5%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.