# EDGAR Filing Document

**Accession Number:** 0001262823
**File Stem:** 0001262823-25-000056
**Filing Date:** 2025-8
**Character Count:** 9175
**Document Hash:** a4703620a0685e15b3dfbbcb47b124ce
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001262823-25-000056.hdr.sgml**: 20250826

**ACCESSION NUMBER**: 0001262823-25-000056

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20250826

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20250826

**DATE AS OF CHANGE**: 20250826

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** WESTLAKE CORP
- **CENTRAL INDEX KEY:** 0001262823
- **STANDARD INDUSTRIAL CLASSIFICATION:** INDUSTRIAL ORGANIC CHEMICALS [2860]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 760346924
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-32260
- **FILM NUMBER:** 251258316

**BUSINESS ADDRESS:**
- **STREET 1:** 2801 POST OAK BLVD
- **STREET 2:** SUITE 600
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77056
- **BUSINESS PHONE:** 713-960-9111

**MAIL ADDRESS:**
- **STREET 1:** 2801 POST OAK BLVD
- **STREET 2:** SUITE 600
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77056

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WESTLAKE CHEMICAL CORP
- **DATE OF NAME CHANGE:** 20030908

?xml version='1.0' encoding='ASCII'? wlk-20250826

**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<br>of incorporation)** | **(Commission File Number)** | **(I.R.S. Employer<br>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 ☐

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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. ◻

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**Item 7.01&nbsp;&nbsp;&nbsp;&nbsp;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&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Exhibits

The following exhibit is furnished herewith:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99.1 <u>[Press release issued on August 26, 2025](ex991august262025.htm)</u>.

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**<br>**Executive Vice President, Legal and External Affairs** |

---

## Exhibit 99.1

**Exhibit 99.1**

**WESTLAKE ANNOUNCES ACQUISITION OF** 

**ACI COMPOUNDING SOLUTIONS BUSINESS**

*Deal Brings Expansion for Westlake's Housing & Infrastructure Products Segment*

**HOUSTON, August 26, 2025** — Westlake Corporation (NYSE: WLK) announced today that it has entered into an agreement to acquire the global compounding solutions businesses of the ACI/Perplastic Group (collectively, "ACI"). ACI is a Portugal-based global manufacturer of specialty materials serving the wire and cable sectors, which helps expand Westlake's offerings.

"The combination of ACI with Westlake's existing compounding business will present an excellent strategic fit and opportunity to integrate with our Housing & Infrastructure Products (HIP) business. It will allow us to further expand Westlake Global Compounds and add new specialty products and technology to our existing portfolio," said Jean-Marc Gilson, Westlake's President and Chief Executive Officer. "ACI is an impressive business with an outstanding reputation for its innovative, high-value products. We look forward to working with their talented team once they join Westlake."

Headquartered in Guarda, Portugal, ACI has four production facilities located in: Mexico, Portugal, Romania and Tunisia which manufacture polyvinyl chloride (PVC), polyolefin, silicone, and thermoplastic rubber compounds. For the twelve months ended December 31, 2024, ACI had net sales of approximately EUR 210 million.

The transaction is expected to close in early 2026, subject to the satisfaction of customary closing conditions, including receipt of certain regulatory approvals.

**About Westlake**

Westlake is a global manufacturer and supplier of materials and innovative products that enhance life every day. Headquartered in Houston, with operations in Asia, Europe, and North America, we provide the building blocks for vital solutions — from housing and construction, to packaging and healthcare, to automotive and consumer goods. For more information, visit the Company's web site at www.westlake.com.

**Contacts**

*Media Inquiries:* Benjamin Ederington, 713-960-9111;

*Investor Inquiries:* Steve Bender, 713-960-9111

**Forward-Looking Statements**

The statements in this release that are not historical statements, including statements regarding the anticipated benefits of the proposed transaction and the expected timing of closing and whether required regulatory approvals will be obtained, are forward-looking statements within the meaning of the federal securities laws. These forward-looking statements are subject to significant risks and uncertainties, many of which are beyond Westlake's control. Actual results could differ materially, based on factors including, but not limited to: the timing to consummate the proposed transaction; the conditions to closing of the proposed transaction; the risk that regulatory approvals are not obtained or are obtained subject to conditions that are not anticipated; the diversion of management time on transaction-related issues; and other risks and uncertainties described in Westlake's Annual Report on Form 10-K for the fiscal year ended December 31, 2024, which was filed with the Securities and Exchange Commission ("SEC") in February 2025, Quarterly Report on Form 10-Q for the quarter ended March 31, 2025, which was filed with the SEC in May 2025, Quarterly Report on Form 10-Q for the quarter ended June 30, 2025, which was filed with the SEC in August 2025, recent Current Reports on Form 8-K, and other SEC filings. These filings also discuss some of the important risk factors that may affect Westlake's business, results of operations and financial condition. Westlake undertakes no obligation to revise or update publicly any forward-looking statements for any reason.

**###**

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