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WASHINGTON, D.C. 20549

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported):						May 13, 2026

__________________________________________

(Exact name of registrant as specified in its charter)

Delaware

1-38494

82-5339416

(State or other jurisdiction of incorporation)

(Commission File Number)

(I.R.S. Employer Identification No.)

500 N. Akard Street, Suite 400

Dallas,

Texas

75201

(Address of principal executive offices)

(Zip Code)

Registrant's telephone number, including area code: (972) 942-6500

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class			Trading Symbol(s)			Name of each exchange on which registered
Common Stock ($0.01 par value)			ACA			New York Stock Exchange
Common Stock ($0.01 par value)			ACA			NYSE Texas, Inc.

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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 13(a) of the Exchange Act. ☐

On May 13, 2026, the Company held its 2026 Annual Meeting of Shareholders at which the Company’s shareholders voted on the following three proposals and cast their votes as described below.

The shareholders elected the following Directors to serve a term expiring at the 2027 annual meeting of shareholders:

The shareholders approved, on an advisory basis, the compensation of the Company’s named executive officers as disclosed in the proxy statement dated March 31, 2026, including the Compensation Discussion and Analysis, the compensation tables, and the narrative discussion related thereto, by the following vote:

The shareholders ratified the appointment of Ernst & Young LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2026, by the following vote:

Item 9.01     Financial Statements and Exhibits.

(d) Exhibits

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.