Westlake (NYSE: WLK) agrees to buy ACI/Perplastic global compounding businesses

Rhea-AI Filing Summary

Westlake Corporation reported that on August 26, 2025 it entered into an agreement to acquire the global compounding solutions businesses of the ACI/Perplastic Group. The company disclosed this agreement through a Regulation FD communication, indicating it views the transaction as important information for the market. Details of the deal terms and strategic rationale are described in a press release furnished as Exhibit 99.1 to the report.

The press release and related disclosure are furnished rather than filed, which limits their use for certain liability purposes under U.S. securities laws unless later specifically incorporated into other company filings.

Insights

M&A and corporate disclosure analyst

Westlake has agreed to buy ACI/Perplastic’s global compounding solutions businesses and disclosed it via Regulation FD.

The report states that Westlake Corporation has entered into an agreement to acquire the global compounding solutions businesses of the ACI/Perplastic Group. This indicates a planned expansion of Westlake’s compounding solutions portfolio, though the excerpt does not describe price, structure, or timing. The fact that the company chose a dedicated disclosure and attached a press release suggests it views the transaction as strategically meaningful.

The information is furnished under Regulation FD rather than filed, which the company notes affects how it is treated under Section 18 of the Exchange Act and for incorporation by reference. Future company filings may provide additional detail on financial terms, closing conditions, and the transaction’s impact on Westlake’s operations once those elements are finalized or become reportable.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (date of earliest event reported): August 26, 2025

Westlake Corporation

(Exact name of registrant as specified in its charter)

Delaware

001-32260

76-0346924

(State or other jurisdiction of incorporation)

(Commission File Number)

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

2801 Post Oak Boulevard,

Suite 600

Houston,

Texas

77056

(Address of principal executive offices)

(Zip Code)

Registrant's telephone number, including area code: (713) 960-9111

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			WLK			The New York Stock Exchange
1.625% Senior Notes due 2029			WLK29			The New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in 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 7.01    Regulation FD Disclosure

On August 26, 2025, Westlake Corporation (the “Company” or "Westlake") issued a press release announcing it has entered into an agreement to acquire the global compounding solutions businesses of the ACI/Perplastic Group. A copy of the press release is furnished with this Current Report as Exhibit 99.1.

The information furnished pursuant to this Current Report, including Exhibit 99.1, shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of such section, nor shall such information be deemed incorporated by reference into any filing by the Company under the Securities Act of 1933, as amended, or the Exchange Act, unless specifically identified as being incorporated therein.

Item 9.01    Financial Statements and Exhibits.

(d) Exhibits

The following exhibit is furnished herewith:

99.1 Press release issued on August 26, 2025.

104 The cover page from this Current Report on Form 8-K, formatted in Inline XBRL.

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.

WESTLAKE CORPORATION

Date:

August 26, 2025

By:

/s/ L. BENJAMIN EDERINGTON

L. Benjamin Ederington Executive Vice President, Legal and External Affairs

FAQ

What did Westlake Corporation (WLK) disclose in its latest 8-K filing?

Westlake Corporation disclosed that it entered into an agreement to acquire the global compounding solutions businesses of the ACI/Perplastic Group and furnished a related press release as Exhibit 99.1.

What business is Westlake Corporation (WLK) acquiring from the ACI/Perplastic Group?

Westlake Corporation agreed to acquire the ACI/Perplastic Group’s global compounding solutions businesses, as described in a press release furnished with the report.

How did Westlake Corporation (WLK) present the acquisition information to investors?

Westlake furnished the acquisition information under Item 7.01 as a Regulation FD Disclosure and attached the full press release as Exhibit 99.1 to the report.

Does the Westlake Corporation (WLK) 8-K make the press release part of its filed reports?

The company states that the information furnished, including Exhibit 99.1, is not deemed "filed" or incorporated by reference into other filings unless specifically identified as such in the future.

Which exhibit in the Westlake Corporation (WLK) 8-K relates to the ACI/Perplastic transaction?

Exhibit 99.1 is the press release issued on August 26, 2025 describing Westlake’s agreement to acquire the global compounding solutions businesses of the ACI/Perplastic Group.

Under which item of the 8-K did Westlake Corporation (WLK) report the ACI/Perplastic acquisition agreement?

Westlake reported the acquisition agreement under Item 7.01, Regulation FD Disclosure.