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  <div style="text-align: center; font-weight: bold;">As filed with the Securities and Exchange Commission on May 30, 2025</div>
  <div style="text-align: right; font-weight: bold;">Registration No. 333-</div>
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  <div style="text-align: center; font-size: 14pt; font-weight: bold;">UNITED STATES</div>
  <div style="text-align: center; font-size: 14pt; font-weight: bold;">SECURITIES AND EXCHANGE COMMISSION</div>
  <div style="text-align: center; font-size: 12pt; font-weight: bold;">Washington, D.C. 20549</div>
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  <div style="text-align: center; font-size: 18pt; font-weight: bold;">FORM S-8</div>
  <div style="text-align: center; font-weight: bold;">REGISTRATION STATEMENT</div>
  <div style="text-align: center; font-style: italic; font-weight: bold;">UNDER</div>
  <div style="text-align: center; font-style: italic; font-weight: bold;">THE SECURITIES ACT OF 1933</div>
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  <div style="text-align: center; font-size: 24pt; font-weight: bold;">ACADIA HEALTHCARE COMPANY, INC.</div>
  <div style="text-align: center; font-weight: bold;">(Exact name of registrant as specified in its charter)</div>
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          <div style="text-align: center; font-weight: bold;">Delaware</div>
          <div style="text-align: center; font-weight: bold;">(State or other jurisdiction of incorporation or organization)</div>
        </td>
        <td style="width: 2%; vertical-align: top;">&#160;</td>
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          <div style="text-align: center; font-weight: bold;">45-2492228</div>
          <div style="text-align: center; font-weight: bold;">(I.R.S. Employer Identification No.)</div>
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          <div style="text-align: center; font-weight: bold;">6100 Tower Circle, Suite 1000</div>
          <div style="text-align: center; font-weight: bold;">Franklin, Tennessee</div>
          <div style="text-align: center; font-weight: bold;">(Address of Principal Executive Offices)</div>
        </td>
        <td style="width: 2%; vertical-align: top;">&#160;</td>
        <td style="width: 49%; vertical-align: top;">
          <div>&#160;</div>
          <div style="text-align: center; font-weight: bold;">37067</div>
          <div style="text-align: center; font-weight: bold;">(Zip Code)</div>
        </td>
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  <div>&#160;</div>
  <div style="text-align: center; font-weight: bold;">Acadia Healthcare Company, Inc. Amended and Restated Incentive Compensation Plan</div>
  <div></div>
  <div style="text-align: center; font-weight: bold;">(Full title of the plan)</div>
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  </div>
  <div style="text-align: center; font-weight: bold;">Brian P. Farley</div>
  <div style="text-align: center; font-weight: bold;">Executive Vice President, General Counsel and Secretary</div>
  <div style="text-align: center; font-weight: bold;">Acadia Healthcare Company, Inc.</div>
  <div style="text-align: center; font-weight: bold;">6100 Tower Circle, Suite 1000</div>
  <div style="text-align: center; font-weight: bold;">Franklin, Tennessee 37067</div>
  <div style="text-align: center; font-weight: bold;">Telephone: (615) 861-6000</div>
  <div style="text-align: center; font-weight: bold;">(Name, address and telephone number, including area code, of agent for service)</div>
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  </div>
  <div style="text-align: center; font-style: italic; font-weight: bold;"><u>Copy to</u>:</div>
  <div style="text-align: center; font-weight: bold;">James H. Nixon III</div>
  <div style="text-align: center; font-weight: bold;">Holland &amp; Knight LLP</div>
  <div style="text-align: center; font-weight: bold;">511 Union Street, Suite 2700</div>
  <div style="text-align: center; font-weight: bold;">Nashville, Tennessee 37219</div>
  <div style="text-align: center; font-weight: bold;">Telephone: (615) 244-6380</div>
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  </div>
  <div>Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated
    filer,&#8221; &#8220;smaller reporting company,&#8221; and &#8220;emerging growth company&#8221; in Rule 12b-2 of the Exchange Act.</div>
  <div>&#160;</div>
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          <div>Large accelerated filer</div>
        </td>
        <td style="width: 5%; vertical-align: top; font-weight: normal;">&#9746;</td>
        <td colspan="1" style="width: 50%; vertical-align: top;">&#160;</td>
        <td style="width: 20%; vertical-align: top;">
          <div>Accelerated filer</div>
        </td>
        <td style="width: 5%; vertical-align: top; font-weight: normal;">&#9744;</td>
      </tr>
      <tr>
        <td style="width: 20%; vertical-align: top;">
          <div>Non-accelerated filer</div>
        </td>
        <td style="width: 5%; vertical-align: top;">&#9744;</td>
        <td colspan="1" style="width: 50%; vertical-align: top;">&#160;</td>
        <td style="width: 20%; vertical-align: top;">
          <div>Smaller reporting company</div>
        </td>
        <td style="width: 5%; vertical-align: top;">&#9744;</td>
      </tr>
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        <td style="width: 20%; vertical-align: top;">&#160;</td>
        <td style="width: 5%; vertical-align: top;">&#160;</td>
        <td colspan="1" style="width: 50%; vertical-align: top;">&#160;</td>
        <td style="width: 20%; vertical-align: top;">
          <div>Emerging growth company</div>
        </td>
        <td style="width: 5%; vertical-align: top;">&#9744;</td>
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  <div><br>
  </div>
  <div>If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the
    Securities Act.&#160;&#9744;</div>
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  <div style="text-align: center; font-weight: bold;">EXPLANATORY NOTE</div>
  <div><br>
  </div>
  <div style="text-indent: 36pt;">This registration statement (this &#8220;Registration Statement&#8221;) is being filed pursuant to General Instruction E to Form S-8 and relates to the registration of an additional 2,475,000 shares of common stock of Acadia
    Healthcare Company, Inc. (the &#8220;Registrant&#8221;) issuable pursuant to the Acadia Healthcare Company, Inc. Amended and Restated Incentive Compensation Plan (the &#8220;Incentive Plan&#8221;). The contents of the Registrant&#8217;s registration statements on Form S-8
    previously filed with the Securities and Exchange Commission (the &#8220;SEC&#8221;) on November 15, 2011 (Reg. No. 333-177990), July 30, 2013 (Reg. No. 333-190232), May 20, 2016 (Reg. No. 333-211505) and August 3, 2021 (Reg. No. 333-258420), including all
    exhibits filed therewith or incorporated therein by reference, are incorporated herein by reference and made a part hereof, except as the same may be modified by the information set forth herein.</div>
  <div><br>
  </div>
  <div>
    <div style="text-align: center; color: #000000; font-weight: bold;">PART I</div>
    <div><br>
    </div>
    <div style="text-align: center; color: #000000; font-weight: bold;">INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</div>
    <div><br>
    </div>
  </div>
  <div>
    <div style="text-indent: 36pt; color: rgb(0, 0, 0);">The document(s) containing the information specified in Part I of this Form S-8 will be sent or given to participants as specified by Rule 428(b)(1) of the Securities Act of 1933, as amended (the
      &#8220;Securities Act&#8221;). Such documents need not be filed with the SEC either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant to Rule 424 of the Securities Act. These documents and the documents incorporated by
      reference in this Registration Statement pursuant to Item 3 of Part II of Form S-8, taken together, constitute a prospectus that meets the requirements of Section 10(a) of the Securities Act.</div>
  </div>
  <div><br>
  </div>
  <div style="text-align: center; font-weight: bold;">PART II</div>
  <div><br>
  </div>
  <div style="text-align: center; font-weight: bold;">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</div>
  <div><br>
  </div>
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        <td style="width: 45pt; vertical-align: top; font-weight: bold;">Item 3.</td>
        <td style="width: auto; vertical-align: top;">
          <div style="font-weight: bold;">Incorporation of Documents by Reference.</div>
        </td>
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  <div><br>
  </div>
  <div style="text-indent: 36pt;">The SEC allows us to &#8220;incorporate by reference&#8221; information into this Registration Statement, which means that we can disclose important information to you by referring you to another document filed separately with the
    SEC. The following documents, which have been filed by the Registrant with the SEC, are incorporated in this Registration Statement by reference:</div>
  <div><br>
  </div>
  <div style="text-indent: 27.35pt; margin-left: 27.35pt;">(a)&#160;&#160;&#160;&#160;&#160;&#160;&#160;The Registrant&#8217;s Annual Report on <a href="https://www.sec.gov/ix?doc=/Archives/edgar/data/1520697/000095017025029095/achc-20241231.htm">Form 10-K</a> for the year ended December 31,
    2024;</div>
  <div>&#160;</div>
  <div style="text-indent: 27.35pt; margin-left: 27.35pt;">(b)&#160;&#160;&#160;&#160;&#160;&#160;&#160;The Registrant&#8217;s Quarterly Report on <a href="https://www.sec.gov/ix?doc=/Archives/edgar/data/1520697/000095017025069294/achc-20250331.htm">Form 10-Q</a> for the quarter ended March 31,
    2025;</div>
  <div>&#160;</div>
  <div style="text-indent: 27.35pt; margin-left: 27.35pt;">(c)&#160;&#160;&#160;&#160;&#160;&#160;&#160;The Registrant&#8217;s Current Reports on Form 8-K filed with the SEC on <a href="https://www.sec.gov/ix?doc=/Archives/edgar/data/1520697/000119312525042573/d922354d8k.htm">February 28, 2025</a>,
    <a href="https://www.sec.gov/ix?doc=/Archives/edgar/data/1520697/000119312525051083/d923379d8k.htm">March 10, 2025</a> and <a href="https://www.sec.gov/ix?doc=/Archives/edgar/data/1520697/000119312525132208/d134531d8k.htm">May 30, 2025</a> (other than
    information furnished pursuant to Item 2.02 or Item 7.01 of the Current Report on Form 8-K, unless expressly stated otherwise therein); and</div>
  <div>&#160;</div>
  <div style="text-indent: 27.35pt; margin-left: 27.35pt;">(d)&#160;&#160;&#160;&#160;&#160;&#160;&#160;The description of the Registrant&#8217;s common stock contained in the Registrant&#8217;s Registration Statement on <a href="https://www.sec.gov/Archives/edgar/data/1520697/000119312511288511/d248295d8a12b.htm">Form 8-A</a>, filed with the SEC pursuant to Section 12(b) of the Securities Exchange Act of 1934, as amended (the &#8220;Exchange Act&#8221;), on October 31, 2011 (Reg.
    No. 001-35331), including any amendments or reports filed for the purpose of updating such descriptions.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">All reports and other documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act after the date of this Registration Statement, but prior to the filing of a
    post-effective amendment which indicates that all securities offered hereby have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be a part hereof from the date of filing
    of such documents.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement
    contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or
    superseded, to constitute a part of this Registration Statement.</div>
  <div>&#160;</div>
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        <td style="width: 45pt; vertical-align: top; font-weight: bold;">Item 4.</td>
        <td style="width: auto; vertical-align: top;">
          <div style="font-weight: bold;">Description of Securities.</div>
        </td>
      </tr>

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  <div>&#160;</div>
  <div style="text-indent: 36pt;">Not applicable.</div>
  <div>&#160;</div>
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        <td style="width: 45pt; vertical-align: top; font-weight: bold;">Item 5.</td>
        <td style="width: auto; vertical-align: top;">
          <div style="font-weight: bold;">Interests of Named Experts and Counsel.</div>
        </td>
      </tr>

  </table>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">Not applicable.</div>
  <div>&#160;</div>
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        <td style="width: 45pt; vertical-align: top; font-weight: bold;">Item 6.</td>
        <td style="width: auto; vertical-align: top;">
          <div style="font-weight: bold;">Indemnification of Directors and Officers.</div>
        </td>
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  <div>&#160;</div>
  <div style="text-indent: 36pt;">The Registrant is incorporated under the laws of the State of Delaware. Section 102(b)(7) of the Delaware General Corporation Law (the &#8220;DGCL&#8221;) allows a corporation to provide in its certificate of incorporation that a
    director of the corporation will not be personally liable to the corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except where the director breached the duty of loyalty, failed to act in good faith,
    engaged in intentional misconduct or knowingly violated a law, authorized the payment of a dividend or approved a stock repurchase in violation of Delaware corporate law or obtained an improper personal benefit. The Registrant&#8217;s amended and restated
    certificate of incorporation provides for this limitation of liability.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">Section 145 of the DGCL (&#8220;Section 145&#8221;) provides that a Delaware corporation may indemnify any person who was, is or is threatened to be made party to any threatened, pending or completed action, suit or proceeding,
    whether civil, criminal, administrative or investigative (other than an action by or in the right of such corporation), by reason of the fact that such person is or was an officer, director, employee or agent of such corporation or is or was serving at
    the request of such corporation as a director, officer, employee or agent of another corporation or enterprise. The indemnity may include expenses (including attorneys&#8217; fees), judgments, fines and amounts paid in settlement actually and reasonably
    incurred by such person in connection with such action, suit or proceeding, provided such person acted in good faith and in a manner he reasonably believed to be in or not opposed to the corporation&#8217;s best interests and, with respect to any criminal
    action or proceeding, had no reasonable cause to believe that his or her conduct was illegal. A Delaware corporation may indemnify any persons who are, were or are threatened to be made a party to any threatened, pending or completed action or suit by
    or in the right of the corporation by reason of the fact that such person is or was a director, officer, employee or agent of another corporation or enterprise. The indemnity may include expenses (including attorneys&#8217; fees) actually and reasonably
    incurred by such person in connection with the defense or settlement of such action or suit, provided such person acted in good faith and in a manner he reasonably believed to be in or not opposed to the corporation&#8217;s best interests, provided that no
    indemnification is permitted without judicial approval if the officer, director, employee or agent is adjudged to be liable to the corporation. Where an officer or director is successful on the merits or otherwise in the defense of any action referred
    to above, the corporation must indemnify him against the expenses which such officer or director has actually and reasonably incurred.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">Section 145 further authorizes a corporation to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee or agent of the corporation or is or was serving at the request of the
    corporation as a director, officer, employee or agent of another corporation or enterprise, against any liability asserted against him and incurred by him in any such capacity, or arising out of his or her status as such, whether or not the corporation
    would otherwise have the power to indemnify him under Section 145.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">The Registrant&#8217;s amended and restated bylaws provide that the Registrant must indemnify its directors and officers to the fullest extent authorized by the DGCL and must also pay expenses incurred in defending any such
    proceeding in advance of its final disposition; provided, that if and to the extent required by the DGCL, the advancement of expenses shall only be made upon delivery of an undertaking, by or on behalf of an indemnified person, to repay all amounts so
    advanced if it should be determined ultimately that such person is not entitled to be indemnified.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">The Registrant entered into indemnification agreements with each of its directors and executive officers. These agreements require the Registrant to indemnify these individuals to the fullest extent permitted under
    Delaware law against liabilities that may arise by reason of their service to the Registrant, and to advance expenses incurred as a result of any proceeding against them as to which they could be indemnified.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">The indemnification rights set forth above shall not be exclusive of any other right which an indemnified person may have or hereafter acquire under any statute, provision of the Registrant&#8217;s certificate of incorporation
    or bylaws, agreement, vote of stockholders or disinterested directors or otherwise.</div>
  <div>&#160;</div>
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  <div style="text-indent: 36pt;">The Registrant maintains standard policies of insurance that provide coverage (1) to its directors and officers against loss arising from claims made by reason of breach of duty or other wrongful act and (2) to the
    Registrant with respect to indemnification payments that it may make to such directors and officers.</div>
  <div>&#160;</div>
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        <td style="width: 45pt; vertical-align: top; font-weight: bold;">Item 8.</td>
        <td style="width: auto; vertical-align: top;">
          <div style="font-weight: bold;">Exhibits.</div>
        </td>
      </tr>

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  <div>&#160;</div>
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          <div>
            <div style="margin-right: 7.6pt; font-weight: bold;">Exhibit</div>
            <div style="margin-right: 7.6pt; font-weight: bold;">Number</div>
          </div>
        </td>
        <td style="width: 2%; vertical-align: top;">&#160;</td>
        <td style="width: 90%; vertical-align: bottom; border-bottom: 2px solid rgb(0, 0, 0);">
          <div>
            <div style="text-align: center; font-weight: bold;">Description</div>
          </div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
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        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>4.1</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="https://www.sec.gov/Archives/edgar/data/1520697/000119312524146576/d833064dex31.htm">Amended and Restated Certificate of Incorporation of Acadia Healthcare Company, Inc. (the &#8220;Company&#8221;), as filed on October 28, 2011 with the
              Secretary of State of the State of Delaware, as amended by the Certificate of Amendments filed on May 25, 2017 and May 23, 2024.</a> (a)</div>
        </td>
      </tr>
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        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>4.2</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="https://www.sec.gov/Archives/edgar/data/1520697/000119312517183851/d383441dex32.htm">Amended and Restated Bylaws of the Company, as amended May 25, 2017.</a> (b)</div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>4.3</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="https://www.sec.gov/Archives/edgar/data/1520697/000119312511321378/d258032dex41.htm">Specimen of the Company&#8217;s Common Stock Certificate.</a> (c)</div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>4.4</div>
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        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="https://www.sec.gov/Archives/edgar/data/1520697/000119312514389882/d810723dex41.htm">Amended and Restated Stockholders Agreement, dated as of October 29, 2014, by and among the Company and each of the stockholders named therein.</a>
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        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>4.5</div>
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        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="https://www.sec.gov/Archives/edgar/data/1520697/000119312516418747/d113050dex4.htm">Third Amended and Restated Registration Rights Agreement dated as of December 31, 2015, by and among the Company and each of the parties named
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        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>4.6</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="https://www.sec.gov/Archives/edgar/data/1520697/000119312516418747/d113050dex4.htm">Joinder, dated February 16, 2016, to the Third Amended and Restated Registration Rights Agreement dated as of December 31, 2015, by and among the
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        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>5.1*</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="ef20049831_ex5-1.htm">Opinion of Holland &amp; Knight LLP, with respect to the legality of the shares of common stock being registered hereby.</a></div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>23.1*</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="ef20049831_ex23-1.htm">Consent of Ernst &amp; Young LLP, an independent registered public accounting firm, with respect to the audited financials
              of the Company.</a></div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>23.2</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="ef20049831_ex5-1.htm">Consent of Holland &amp; Knight LLP<font style="font-style: italic;"> (included in Exhibit 5.1)</font>.</a></div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>24</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="#POWEROFATTORNEY">Power of Attorney of certain officers and directors of the Company to file future amendments <font style="font-style: italic;">(set forth on the signature page of this Registration Statement)</font>.</a></div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>99.1</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="https://www.sec.gov/ix?doc=/Archives/edgar/data/1520697/000114036125013294/ny20042551x1_def14a.htm">Acadia Healthcare Company, Inc. Amended and Restated Incentive Compensation Plan, effective May 18, 2023.</a> (g)</div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>99.2</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="https://www.sec.gov/ix?doc=/Archives/edgar/data/1520697/000114036125013294/ny20042551x1_def14a.htm">Amendment, effective May 29, 2025, to the Acadia Healthcare Company, Inc. Incentive Compensation Plan.</a> (h)</div>
        </td>
      </tr>
      <tr>
        <td rowspan="1" style="width: 8%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 2%; vertical-align: top;">&#160;</td>
        <td rowspan="1" style="width: 90%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 8%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div>107*</div>
        </td>
        <td style="width: 2%; vertical-align: top; background-color: rgb(204, 238, 255);">&#160;</td>
        <td style="width: 90%; vertical-align: top; background-color: rgb(204, 238, 255);">
          <div><a href="ef20049831_ex107.htm">Filing Fee Table.</a></div>
        </td>
      </tr>

  </table>
  <div><br>
  </div>
  <div>
    <hr noshade="noshade" align="left" style="height: 2px; width: 10%; color: #000000; background-color: #000000; margin-left: 0px; margin-right: auto; border: none;"></div>
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      <tr>
        <td style="vertical-align: top; width: 18pt;">*</td>
        <td style="width: auto; vertical-align: top;">
          <div>Filed herewith.</div>
        </td>
      </tr>

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      <tr>
        <td style="width: 18pt; vertical-align: top;">(a)</td>
        <td style="width: auto; vertical-align: top;">
          <div>Incorporated by reference to exhibits filed with the Company&#8217;s Current Report on Form 8-K filed May 24, 2024 (File No. 001-35331).</div>
        </td>
      </tr>

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      <tr>
        <td style="width: 18pt; vertical-align: top;">(b)</td>
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          <div>Incorporated by reference to exhibits filed with the Company&#8217;s Current Report on Form 8-K filed May 25, 2017 (File No. 001-35331).</div>
        </td>
      </tr>

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        <td style="width: 18pt; vertical-align: top;">(c)</td>
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          <div>Incorporated by reference to exhibits filed with the Company&#8217;s registration statement on Form S-1, as amended (File No. 333-175523), originally filed with the SEC on November 23, 2011.</div>
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      </tr>

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      <tr>
        <td style="width: 18pt; vertical-align: top;">(d)</td>
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          <div>Incorporated by reference to exhibits filed with the Company&#8217;s Current Report on Form 8-K filed October 30, 2014 (File No. 001-35331).</div>
        </td>
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        <td style="width: 18pt; vertical-align: top;">(e)</td>
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          <div>Incorporated by reference to exhibits filed with the Company&#8217;s Current Report on Form 8-K filed January 4, 2016 (File No. 001-35331).</div>
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      <tr>
        <td style="width: 18pt; vertical-align: top;">(f)</td>
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          <div>Incorporated by reference to exhibits filed with the Company&#8217;s Current Report on Form 8-K filed February 16, 2016 (File No. 001-35331).</div>
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          <div>Incorporated by reference to Appendix B to the Company&#8217;s Definitive Proxy Statement filed with the SEC on April 10, 2025 (File No. 001-35331).</div>
        </td>
      </tr>

  </table>
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          <div style="color: rgb(33, 37, 41);">Incorporated by reference to Appendix A to the Company&#8217;s Definitive Proxy Statement filed with the SEC on April 10, 2025 (File No. 001-35331).</div>
        </td>
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  </table>
  <div><br>
  </div>
  <div style="clear: both; margin-top: 10pt; margin-bottom: 10pt;" class="BRPFPageBreakArea">
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        <td style="width: 45pt; vertical-align: top; font-weight: bold;">Item 9.</td>
        <td style="width: auto; vertical-align: top;">
          <div style="font-weight: bold;">Undertakings.</div>
        </td>
      </tr>

  </table>
  <div>&#160;</div>
  <div></div>
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        <td style="width: 36pt; vertical-align: top;">(a)</td>
        <td style="width: auto; vertical-align: top;">
          <div>The undersigned registrant hereby undertakes:</div>
        </td>
      </tr>

  </table>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">(1)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt; margin-left: 36pt;">(i)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;To include any prospectus required by Section 10(a)(3) of the Securities Act;</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt; margin-left: 36pt;">(ii)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or
    in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would
    not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the SEC pursuant to Rule 424(b) if, in the aggregate, the changes in volume
    and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the &#8220;Calculation of Filing Fee Tables&#8221; or &#8220;Calculation of Registration Fee&#8221; table, as applicable, in the effective registration statement;</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt; margin-left: 36pt;">(iii)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the
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  <div>&#160;</div>
  <div></div>
  <div><font style="font-style: italic;">provided, however</font>, that paragraphs (a)(1)(i) and (a)(1)(ii) above do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with
    or furnished to the SEC by the registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in the registration statement.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">(2)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein,
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  <div>&#160;</div>
  <div style="text-indent: 36pt;">(3)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.</div>
  <div>&#160;</div>
  <div>(b)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the registrant&#8217;s annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act (and,
    where applicable, each filing of an employee benefit plan&#8217;s annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in this registration statement shall be deemed to be a new registration statement relating to the
    securities offered therein, and the offering of such securities at that time shall be deemed to be the initial<font style="font-style: italic;"> bona fide</font> offering thereof.</div>
  <div></div>
  <div>&#160;</div>
  <div>(c)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been
    advised that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by
    the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the
    securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public
    policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.</div>
  <div>&#160;</div>
  <div style="clear: both; margin-top: 10pt; margin-bottom: 10pt;" class="BRPFPageBreakArea">
    <div style="page-break-after: always;" class="BRPFPageBreak">
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  </div>
  <div style="text-align: center; font-weight: bold;"><u>SIGNATURES</u></div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this
    registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Franklin of Tennessee, on May 30, 2025.</div>
  <div>&#160;</div>
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      <tr>
        <td style="width: 55%; vertical-align: top;">&#160;</td>
        <td colspan="2" style="vertical-align: top;">
          <div>ACADIA HEALTHCARE COMPANY, INC.</div>
        </td>
      </tr>
      <tr>
        <td style="width: 55%; vertical-align: top;">&#160;</td>
        <td style="width: 3%; vertical-align: top;">&#160;</td>
        <td style="width: 42%; vertical-align: top;">&#160;</td>
      </tr>
      <tr>
        <td style="width: 55%; vertical-align: top;">&#160;</td>
        <td style="width: 3%; vertical-align: top;">
          <div>By:</div>
        </td>
        <td style="width: 42%; vertical-align: top;">
          <div><u>/s/ Christopher H. Hunter</u></div>
        </td>
      </tr>
      <tr>
        <td style="width: 55%; vertical-align: top;">&#160;</td>
        <td style="width: 3%; vertical-align: top;">&#160;</td>
        <td style="width: 42%; vertical-align: top;">
          <div>Name: Christopher H. Hunter</div>
        </td>
      </tr>
      <tr>
        <td style="width: 55%; vertical-align: top;">&#160;</td>
        <td style="width: 3%; vertical-align: top;">&#160;</td>
        <td style="width: 42%; vertical-align: top;">
          <div>Title: Chief Executive Officer and Director</div>
        </td>
      </tr>

  </table>
  <div><br>
  </div>
  <a name="POWEROFATTORNEY"><!--Anchor--></a>
  <div style="text-align: center; font-weight: bold;">POWER OF ATTORNEY</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Brian P. Farley and Heather Dixon his or her true and lawful attorney-in-fact and agent, each with full
    power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement on Form S-8 and to file the
    same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act
    and thing requisite and necessary to be done, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, may lawfully do or cause to be done by
    virtue hereof.</div>
  <div>&#160;</div>
  <div style="text-indent: 36pt;">Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.</div>
  <div>&#160;</div>
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        <td style="width: 5%; vertical-align: top; padding-bottom: 2px;">&#160;</td>
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        <td style="width: 5%; vertical-align: top;">&#160;</td>
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{"company-data": {"conformed-name": "Acadia Healthcare Company, Inc.", "cik": "0001520697", "assigned-sic": "8093", "organization-name": "08 Industrial Applications and Services", "ein": "000000000", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-287698", "film-number": "251011990"}, "business-address": {"street1": "6100 TOWER CIRCLE", "street2": "SUITE 1000", "city": "FRANKLIN", "state": "TN", "zip": "37067", "phone": "615-861-6000"}, "mail-address": {"street1": "6100 TOWER CIRCLE", "street2": "SUITE 1000", "city": "FRANKLIN", "state": "TN", "zip": "37067"}}
As filed with the Securities and Exchange Commission on May 30, 2025
Registration No. 333-
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
ACADIA HEALTHCARE COMPANY, INC.
(Exact name of registrant as specified in its charter)
Delaware
(State or other jurisdiction of incorporation or organization)
45-2492228
(I.R.S. Employer Identification No.)
6100 Tower Circle, Suite 1000
Franklin, Tennessee
(Address of Principal Executive Offices)
37067
(Zip Code)
Acadia Healthcare Company, Inc. Amended and Restated Incentive Compensation Plan
(Full title of the plan)
Brian P. Farley
Executive Vice President, General Counsel and Secretary
Acadia Healthcare Company, Inc.
6100 Tower Circle, Suite 1000
Franklin, Tennessee 37067
Telephone: (615) 861-6000
(Name, address and telephone number, including area code, of agent for service)
Copy to
:
James H. Nixon III
Holland & Knight LLP
511 Union Street, Suite 2700
Nashville, Tennessee 37219
Telephone: (615) 244-6380
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated
    filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer
☒
Accelerated filer
☐
Non-accelerated filer
☐
Smaller reporting company
☐
Emerging growth company
☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the
    Securities Act. ☐
EXPLANATORY NOTE
This registration statement (this "Registration Statement") is being filed pursuant to General Instruction E to Form S-8 and relates to the registration of an additional 2,475,000 shares of common stock of Acadia
    Healthcare Company, Inc. (the "Registrant") issuable pursuant to the Acadia Healthcare Company, Inc. Amended and Restated Incentive Compensation Plan (the "Incentive Plan"). The contents of the Registrant's registration statements on Form S-8
    previously filed with the Securities and Exchange Commission (the "SEC") on November 15, 2011 (Reg. No. 333-177990), July 30, 2013 (Reg. No. 333-190232), May 20, 2016 (Reg. No. 333-211505) and August 3, 2021 (Reg. No. 333-258420), including all
    exhibits filed therewith or incorporated therein by reference, are incorporated herein by reference and made a part hereof, except as the same may be modified by the information set forth herein.
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
The document(s) containing the information specified in Part I of this Form S-8 will be sent or given to participants as specified by Rule 428(b)(1) of the Securities Act of 1933, as amended (the
      "Securities Act"). Such documents need not be filed with the SEC either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant to Rule 424 of the Securities Act. These documents and the documents incorporated by
      reference in this Registration Statement pursuant to Item 3 of Part II of Form S-8, taken together, constitute a prospectus that meets the requirements of Section 10(a) of the Securities Act.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3.
Incorporation of Documents by Reference.
The SEC allows us to "incorporate by reference" information into this Registration Statement, which means that we can disclose important information to you by referring you to another document filed separately with the
    SEC. The following documents, which have been filed by the Registrant with the SEC, are incorporated in this Registration Statement by reference:
(a)       The Registrant's Annual Report on
Form 10-K
for the year ended December 31,
    2024;
(b)       The Registrant's Quarterly Report on
Form 10-Q
for the quarter ended March 31,
    2025;
(c)       The Registrant's Current Reports on Form 8-K filed with the SEC on
February 28, 2025
,
March 10, 2025
and
May 30, 2025
(other than
    information furnished pursuant to Item 2.02 or Item 7.01 of the Current Report on Form 8-K, unless expressly stated otherwise therein); and
(d)       The description of the Registrant's common stock contained in the Registrant's Registration Statement on
Form 8-A
, filed with the SEC pursuant to Section 12(b) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), on October 31, 2011 (Reg.
    No. 001-35331), including any amendments or reports filed for the purpose of updating such descriptions.
All reports and other documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act after the date of this Registration Statement, but prior to the filing of a
    post-effective amendment which indicates that all securities offered hereby have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be a part hereof from the date of filing
    of such documents.
Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement
    contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or
    superseded, to constitute a part of this Registration Statement.
Item 4.
Description of Securities.
Not applicable.
Item 5.
Interests of Named Experts and Counsel.
Not applicable.
Item 6.
Indemnification of Directors and Officers.
The Registrant is incorporated under the laws of the State of Delaware. Section 102(b)(7) of the Delaware General Corporation Law (the "DGCL") allows a corporation to provide in its certificate of incorporation that a
    director of the corporation will not be personally liable to the corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except where the director breached the duty of loyalty, failed to act in good faith,
    engaged in intentional misconduct or knowingly violated a law, authorized the payment of a dividend or approved a stock repurchase in violation of Delaware corporate law or obtained an improper personal benefit. The Registrant's amended and restated
    certificate of incorporation provides for this limitation of liability.
Section 145 of the DGCL ("Section 145") provides that a Delaware corporation may indemnify any person who was, is or is threatened to be made party to any threatened, pending or completed action, suit or proceeding,
    whether civil, criminal, administrative or investigative (other than an action by or in the right of such corporation), by reason of the fact that such person is or was an officer, director, employee or agent of such corporation or is or was serving at
    the request of such corporation as a director, officer, employee or agent of another corporation or enterprise. The indemnity may include expenses (including attorneys' fees), judgments, fines and amounts paid in settlement actually and reasonably
    incurred by such person in connection with such action, suit or proceeding, provided such person acted in good faith and in a manner he reasonably believed to be in or not opposed to the corporation's best interests and, with respect to any criminal
    action or proceeding, had no reasonable cause to believe that his or her conduct was illegal. A Delaware corporation may indemnify any persons who are, were or are threatened to be made a party to any threatened, pending or completed action or suit by
    or in the right of the corporation by reason of the fact that such person is or was a director, officer, employee or agent of another corporation or enterprise. The indemnity may include expenses (including attorneys' fees) actually and reasonably
    incurred by such person in connection with the defense or settlement of such action or suit, provided such person acted in good faith and in a manner he reasonably believed to be in or not opposed to the corporation's best interests, provided that no
    indemnification is permitted without judicial approval if the officer, director, employee or agent is adjudged to be liable to the corporation. Where an officer or director is successful on the merits or otherwise in the defense of any action referred
    to above, the corporation must indemnify him against the expenses which such officer or director has actually and reasonably incurred.
Section 145 further authorizes a corporation to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee or agent of the corporation or is or was serving at the request of the
    corporation as a director, officer, employee or agent of another corporation or enterprise, against any liability asserted against him and incurred by him in any such capacity, or arising out of his or her status as such, whether or not the corporation
    would otherwise have the power to indemnify him under Section 145.
The Registrant's amended and restated bylaws provide that the Registrant must indemnify its directors and officers to the fullest extent authorized by the DGCL and must also pay expenses incurred in defending any such
    proceeding in advance of its final disposition; provided, that if and to the extent required by the DGCL, the advancement of expenses shall only be made upon delivery of an undertaking, by or on behalf of an indemnified person, to repay all amounts so
    advanced if it should be determined ultimately that such person is not entitled to be indemnified.
The Registrant entered into indemnification agreements with each of its directors and executive officers. These agreements require the Registrant to indemnify these individuals to the fullest extent permitted under
    Delaware law against liabilities that may arise by reason of their service to the Registrant, and to advance expenses incurred as a result of any proceeding against them as to which they could be indemnified.
The indemnification rights set forth above shall not be exclusive of any other right which an indemnified person may have or hereafter acquire under any statute, provision of the Registrant's certificate of incorporation
    or bylaws, agreement, vote of stockholders or disinterested directors or otherwise.
The Registrant maintains standard policies of insurance that provide coverage (1) to its directors and officers against loss arising from claims made by reason of breach of duty or other wrongful act and (2) to the
    Registrant with respect to indemnification payments that it may make to such directors and officers.
Item 8.
Exhibits.
Exhibit
Number
Description
4.1
Amended and Restated Certificate of Incorporation of Acadia Healthcare Company, Inc. (the "Company"), as filed on October 28, 2011 with the
              Secretary of State of the State of Delaware, as amended by the Certificate of Amendments filed on May 25, 2017 and May 23, 2024.
(a)
4.2
Amended and Restated Bylaws of the Company, as amended May 25, 2017.
(b)
4.3
Specimen of the Company's Common Stock Certificate.
(c)
4.4
Amended and Restated Stockholders Agreement, dated as of October 29, 2014, by and among the Company and each of the stockholders named therein.
(d)
4.5
Third Amended and Restated Registration Rights Agreement dated as of December 31, 2015, by and among the Company and each of the parties named
              therein.
(e)
4.6
Joinder, dated February 16, 2016, to the Third Amended and Restated Registration Rights Agreement dated as of December 31, 2015, by and among the
              Company and each of the parties named therein.
(f)
5.1*
Opinion of Holland & Knight LLP, with respect to the legality of the shares of common stock being registered hereby.
23.1*
Consent of Ernst & Young LLP, an independent registered public accounting firm, with respect to the audited financials
              of the Company.
23.2
Consent of Holland & Knight LLP
(included in Exhibit 5.1)
.
24
Power of Attorney of certain officers and directors of the Company to file future amendments
(set forth on the signature page of this Registration Statement)
.
99.1
Acadia Healthcare Company, Inc. Amended and Restated Incentive Compensation Plan, effective May 18, 2023.
(g)
99.2
Amendment, effective May 29, 2025, to the Acadia Healthcare Company, Inc. Incentive Compensation Plan.
(h)
107*
Filing Fee Table.
*
Filed herewith.
(a)
Incorporated by reference to exhibits filed with the Company's Current Report on Form 8-K filed May 24, 2024 (File No. 001-35331).
(b)
Incorporated by reference to exhibits filed with the Company's Current Report on Form 8-K filed May 25, 2017 (File No. 001-35331).
(c)
Incorporated by reference to exhibits filed with the Company's registration statement on Form S-1, as amended (File No. 333-175523), originally filed with the SEC on November 23, 2011.
(d)
Incorporated by reference to exhibits filed with the Company's Current Report on Form 8-K filed October 30, 2014 (File No. 001-35331).
(e)
Incorporated by reference to exhibits filed with the Company's Current Report on Form 8-K filed January 4, 2016 (File No. 001-35331).
(f)
Incorporated by reference to exhibits filed with the Company's Current Report on Form 8-K filed February 16, 2016 (File No. 001-35331).
(g)
Incorporated by reference to Appendix B to the Company's Definitive Proxy Statement filed with the SEC on April 10, 2025 (File No. 001-35331).
(h)
Incorporated by reference to Appendix A to the Company's Definitive Proxy Statement filed with the SEC on April 10, 2025 (File No. 001-35331).
Item 9.
Undertakings.
(a)
The undersigned registrant hereby undertakes:
(1)          To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:
(i)          To include any prospectus required by Section 10(a)(3) of the Securities Act;
(ii)         To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or
    in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would
    not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the SEC pursuant to Rule 424(b) if, in the aggregate, the changes in volume
    and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the "Calculation of Filing Fee Tables" or "Calculation of Registration Fee" table, as applicable, in the effective registration statement;
(iii)        To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the
    registration statement;
provided, however
, that paragraphs (a)(1)(i) and (a)(1)(ii) above do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with
    or furnished to the SEC by the registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in the registration statement.
(2)          That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein,
    and the offering of such securities at that time shall be deemed to be the initial
bona fide
offering thereof.
(3)          To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.
(b)          The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the registrant's annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act (and,
    where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in this registration statement shall be deemed to be a new registration statement relating to the
    securities offered therein, and the offering of such securities at that time shall be deemed to be the initial
bona fide
offering thereof.
(c)          Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been
    advised that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by
    the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the
    securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public
    policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this
    registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Franklin of Tennessee, on May 30, 2025.
ACADIA HEALTHCARE COMPANY, INC.
By:
/s/ Christopher H. Hunter
Name: Christopher H. Hunter
Title: Chief Executive Officer and Director
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Brian P. Farley and Heather Dixon his or her true and lawful attorney-in-fact and agent, each with full
    power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement on Form S-8 and to file the
    same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act
    and thing requisite and necessary to be done, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, may lawfully do or cause to be done by
    virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.
Signature
Title
Date
/s/ Christopher H. Hunter
Chief Executive Officer and Director
May 30, 2025
Christopher H. Hunter
(Principal Executive Officer)
/s/ Heather Dixon
Chief Financial Officer
May 30, 2025
Heather Dixon
(Principal Financial Officer and Principal Accounting Officer)
/s/ Reeve B. Waud
Chairman of the Board
May 30, 2025
Reeve B. Waud
/s/ Jason R. Bernhard
Director
May 30, 2025
Jason R. Bernhard
/s/ E. Perot Bissell
Director
May 30, 2025
E. Perot Bissell
/s/ Michel J. Fucci
Director
May 30, 2025
Michel J. Fucci
/s/ Vicky B. Gregg
Director
May 30, 2025
Vicky B. Gregg
/s/ William F. Grieco
Director
May 30, 2025
William F. Grieco
/s/ Patrice A. Harris
Director
May 30, 2025
Patrice A. Harris
/s/ R. David Kelly
Director
May 30, 2025
R. David Kelly
/s/ Wade D. Miquelon
Director
May 30, 2025
Wade D. Miquelon