UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

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

Date of Report (Date of earliest event reported): November 5, 2025

Westin Acquisition Corp

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: +65 9488 4425

Not Applicable

(Former name or former address, if changed since last report)

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

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

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. ☐

Item 8.01. Other Events.

On November 5, 2025, Westin Acquisition Corp (the “Company”) consummated its initial public offering (the “IPO”) of 5,000,000 units (the “Units”). In connection with the closing of the IPO, the underwriter fully exercised its over-allotment option to purchase 750,000 additional Units for an aggregate of 5,750,000 Units sold. Each Unit consists of one ordinary share, par value $0.0001 per share, of the Company (the “Ordinary Shares”) and one right to receive one-sixth (1/6) of one Ordinary Share upon the consummation of the Company’s initial business combination the (“Rights”). The Units were sold at an offering price of $10.00 per Unit, generating total gross proceeds of $57,500,000.

Simultaneously with the closing of the IPO, the Company consummated a private placement (the “Private Placement”) in which Westin Investment Co. Ltd. (the “Sponsor”), purchased 235,000 units (the “Private Placement Units”) at a price of $10.00 per Private Placement Unit, generating total gross proceeds of $2,350,000.

A total of $57,500,000 of the net proceeds from the IPO (including the full exercise of the over-allotment option) and the sale of the Private Placement Units were placed in a trust account established for the benefit of the Company’s public shareholders and maintained by Odyssey Transfer and Trust Company, acting as trustee.

An audited balance sheet as of November 5, 2025, reflecting receipt of the proceeds upon consummation of the IPO and the Private Placement has been issued by the Company and is included as Exhibit 99.1 to this Current Report on Form 8-K.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

SIGNATURE

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.

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