Vanguard Discloses 9.42M Shares of Acadia Healthcare (10.19%)

Rhea-AI Filing Summary

The Vanguard Group reported owning 9,417,045 shares of Acadia Healthcare Company, Inc., representing 10.19% of the outstanding common stock as of 09/30/2025. Vanguard reports 0 shares of sole voting power, 598,737 shares of shared voting power, 8,718,595 shares of sole dispositive power, and 698,450 shares of shared dispositive power. The filing states these shares are held in the ordinary course of business and not for the purpose of changing or influencing control. The reporting address is 100 Vanguard Blvd., Malvern, PA, and the filing is signed by Ashley Grim, Head of Global Fund Administration, on 10/06/2025.

Positive

• Material passive stake: Vanguard holds 9,417,045 shares, equal to 10.19% of the class
• Clear non‑control intent: Filed on Schedule 13G indicating holdings are ordinary course of business and not to influence control

Negative

• None.

Insights

Institutional Ownership Analyst

Vanguard holds a material passive stake of just over 10% in Acadia Healthcare.

Holding 9.42M shares and 10.19% of the class places Vanguard among significant institutional holders; the position is reported under Schedule 13G, which signals a passive, non-control intent.

Key dependencies include whether other large holders file active disclosures; monitor any future amendments or Schedule 13D filings for changes in intent within the next 30–90 days.

Corporate Governance Specialist

The voting profile shows limited sole voting power and meaningful dispositive authority.

Vanguard reports 0 sole voting power but 598,737 shared voting votes and substantial sole dispositive power, indicating control over trades but limited unilateral voting control. This split is common for asset managers holding client-directed accounts.

Watch for proxy-season activity or coordination with other large holders ahead of any significant governance votes in the coming year.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 9)

Acadia Healthcare Co Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

00404A109

(CUSIP Number)

09/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 00404A109

1

Names of Reporting Persons

The Vanguard Group

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 598,737.00
7	Sole Dispositive Power 8,718,595.00
8	Shared Dispositive Power 698,450.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

9,417,045.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

10.19 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Acadia Healthcare Co Inc
(b)	Address of issuer's principal executive offices: 6100 Tower Circle, Suite 1000, Franklin, TN, 37067
Item 2.
(a)	Name of person filing: The Vanguard Group
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd., Malvern, PA 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 00404A109
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 9417045
(b)	Percent of class: 10.19 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 598737
	(iii) Sole power to dispose or to direct the disposition of: 8718595
	(iv) Shared power to dispose or to direct the disposition of: 698450
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The Vanguard Group, Inc.'s clients, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein. No one other person's interest in the securities reported herein is more than 5%.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

The Vanguard Group

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	10/06/2025

FAQ

How many Acadia Healthcare (ACHC) shares does Vanguard report owning?

Vanguard reports owning 9,417,045 shares of ACHC, representing 10.19% of the class.

Does Vanguard claim voting control over the ACHC shares?

Vanguard reports 0 shares of sole voting power and 598,737 shares of shared voting power, indicating no sole voting control.

What type of SEC schedule was filed for Vanguard's ACHC position?

The filing is a Schedule 13G (Amendment No. 9), which is used for passive investors reporting beneficial ownership.

When is the reporting date for the Vanguard Schedule 13G for ACHC?

The event date requiring the filing is 09/30/2025, and the signature is dated 10/06/2025.

Who signed the Schedule 13G for Vanguard on ACHC?

The filing is signed by Ashley Grim, Head of Global Fund Administration.