X0306 4 2022-08-04 0 0001520697 Acadia Healthcare Company, Inc. ACHC 0001337573 Howard Christopher L 6100 TOWER CIRCLE, SUITE 1000 FRANKLIN TN 37067 0 1 0 0 EVP, GC and Secretary Common Stock 2022-08-04 4 M 0 6137 50.75 A 169804 D Common Stock 2022-08-04 4 S 0 8443 81.51 D 161361 D Common Stock 2022-08-08 4 S 0 12214 81.67 D 149147 D Common Stock 85613 I See Footnote Stock Option 50.75 2022-08-04 4 M 0 6137 0.00 A 2015-02-27 2024-02-27 Common Stock 6137 0 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.50 to $81.65, inclusive. The reporting person undertakes to provide to Acadia Healthcare Company, Inc. (Acadia), any security holder of Acadia, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.50 to $81.96, inclusive. The reporting person undertakes to provide to Acadia, any security holder of Acadia, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Mr. Howard expressly disclaims beneficial ownership of the reported securities, except to the extent of his pecuniary interest therein. Includes 25,613 shares held by the Christopher L. Howard Family 2017 Grantor Retained Annuity Trust, 25,613 shares held by the Angie Parrott Howard Family 2017 Grantor Retained Annuity Trust and 34,387 shares held by the reporting person's spouse. /s/ Christopher L. Howard 2022-08-08