2Q 2023 Earnings Presentation 2 Westlake Second Quarter 2023 Highlights ▪ Net sales of $3.3 billion, net income of $297 million and EBITDA(1) of $690 million ▪ Elevated level of unplanned outages impacted operating income and EBITDA by ~$50 million ▪ Performance and Essential Materials second quarter sales of $2.1 billion with EBITDA(2) of $435 million ▪ Housing and Infrastructure Products second quarter sales of $1.1 billion with EBITDA(3) of $244 million ▪ Raising 2023 cost savings target to $75 - $105 mi ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32260 Westlake Corporation (Exact name of Registrant as specified in its charter) Delaware 76-0346924 (State or other jurisdiction of (I.R.S. E ...

Westlake Corporation (NYSE:WLK) Q1 2023 Earnings Conference Call May 4, 2023 11:00 AM ET Company Participants Jeff Holy - Vice President & Treasurer Albert Chao - President and Chief Executive Officer Steven Bender - Executive Vice President and Chief Financial Officer Conference Call Participants Michael Sison - Wells Fargo Kevin McCarthy - Vertical Research Partners Joshua Spector - UBS John Roberts - Credit Suisse Duffy Fischer - Goldman Sachs Matthew DeYoe - BofA Securities Matthew Blair - Tudor, Pi ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32260 Westlake Corporation (Exact name of Registrant as specified in its charter) Delaware 76-0346924 (State or other jurisdiction of (I.R.S. ...

4Q 2022 Earnings Presentation Westlake Fourth Quarter 2022 Highlights ▪ Compared to the prior-year period, fourth quarter financial results were impacted by lower sales volume1 and selling prices due to customer destocking, China lockdowns, lackluster European demand and rising interest rates: ▪ Net sales of $3.3 billion, a decrease of 6% vs. fourth quarter 2021 net sales ▪ Net income of $232 million, a decrease of 64% vs. fourth quarter 2021 net income ▪ EBITDA of $619 million, a decrease of 45% vs. fourth ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32260 Westlake Corporation (Exact name of registrant as specified in its charter) Delaware 76-0346924 (State or other jurisdictio ...

Westlake Corporation (NYSE:WLK) Q4 2022 Results Conference Call February 21, 2023 11:00 AM ET Company Participants Jeff Holy - Vice President & Treasurer Albert Chao - President and Chief Executive Officer Steven Bender - Executive Vice President and Chief Financial Officer Roger Kearns - Chief Operating Officer and Executive Vice President, Performance and Essential Materials Conference Call Participants Kevin McCarthy - Vertical Research Michael Leithead - Barclays David Begleiter - Deutsche Bank Michael ...

Focused Approach to Delivering Value and Growth Westlake 3 rd Quarter 2022 Westlake is a Compelling Investment Opportunity | --- | --- | --- | --- | --- | |-------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------|-------|-------| | 1 | Strong and experienced leadership with a proven track re ...

Westlake Corporation (NYSE:WLK) Q3 2022 Earnings Conference Call November 3, 2022 11:00 AM ET Company Participants Jeff Holy - Vice President & Treasurer Albert Chao - President and Chief Executive Officer Steven Bender - Executive Vice President and Chief Financial Officer Roger Kearns - Chief Operating Officer and Executive Vice President, Performance and Essential Materials Conference Call Participants Michael Sison - Wells Fargo Bhavesh Lodaya - BMO Capital Markets Aleksey Yefremov - KeyBanc Capital Kev ...

Q3 2022 Earnings Presentation Westlake Third Quarter 2022 Highlights Westlake delivers differentiated, specialty and branded products and solutions | --- | --- | --- | --- | --- | |-------|-------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ...