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, 2021 or For the Transition Period from to Commission File No. 001-36567 Westlake Chemical Partners LP (Exact name of registrant as specified in its charter) Delaware 32-0436529 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 2801 Post Oak Boulevard ...

Westlake Chemical Partners LP (NYSE:WLKP) Q2 2021 Earnings Conference Call August 3, 2021 1:00 PM ET Company Participants Jeff Holy - VP & Treasurer Albert Chao - President & CEO Mark Bender - EVP & CFO Conference Call Participants Michael Leithead - Barclays Bank Matthew Blair - Tudor, Pickering, Holt & Co. Operator Good afternoon. Thank you for standing by. Welcome to the Westlake Chemical Partners Second Quarter 2021 Earnings Conference Call. [Operator Instructions]. As a reminder, this conference is bei ...

Second Quarter 2021 Earnings Presentation August 3, 2021 Commitment to Corporate Social Responsibility is Formed by Five Longstanding Core Values | --- | --- | --- | --- | --- | |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------- ...

| --- | |-------| | | | | Acquisition Significantly Expands Westlake's Leading Positions in Fast Growing Home Building Products • Acquisition of Boral Limited's North America building products business ('BNA') adds significant scale and product diversification to Westlake to broaden its leading Building Products business: – BNA has leading positions in Concrete & Clay Roofing, Decorative Stone, and Plastic Shutters; as well as strong positions in Stone Coated Metal Roofing, Texas Windows, and Premium Siding ...

| --- | --- | |-------|---------------------------------------------------------------------------------------| | | | | | Goldman Sachs Leveraged Finance Conference May 17, 2021 Westlake Chemical Partners LP | Westlake Chemical Partners LP Attractive Yield, Stability, and Long Growth Runway Westlake Chemical Partner's (WLKP) combination of yield, cash flow stability, and runway of available growth offers a compelling investment opportunity relative to other yield oriented investments • WLKP currently pays a ...

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, 2021 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. 001-36567 Westlake Chemical Partners LP (Exact name of registrant as specified in its charter) Delaware 32-0436529 (State or other jurisdiction of ...

Westlake Chemical Partners LP (NYSE:WLKP) Q1 2021 Earnings Conference Call May 4, 2021 1:00 PM ET Company Participants Jeff Holy - Vice President & Treasurer Albert Chao - President & Chief Executive Officer Steve Bender - Senior Vice President & Chief Financial Officer Conference Call Participants Mike Leithead - Barclays Steve Byrne - Bank of America Operator Good afternoon. Thank you for standing by. Welcome to the Westlake Chemical Partners First Quarter 2021 Earnings Conference Call. During the present ...

Financial Performance - Westlake's sales for the first quarter of 2021 were $2357 million, a 20% increase compared to $1965 million in the fourth quarter of 2020 and a 22% increase compared to $1932 million in the first quarter of 2020[11] - The company's operating income for 1Q21 was $346 million, a 94% increase compared to $178 million in 4Q20 and a 154% increase compared to $136 million in 1Q20[11] - Westlake's EBITDA for 1Q21 was $553 million, a 43% increase compared to $386 million in 4Q20 and a 64% increase compared to $337 million in 1Q20[11] - Net income attributable to Westlake Chemical Corporation for 1Q21 was $242 million, compared to $113 million in 4Q20 and $145 million in 1Q20[8, 24] - Diluted earnings per share attributable to Westlake Chemical Corporation for 1Q21 was $1.87, compared to $0.87 in 4Q20 and $1.13 in 1Q20[8, 24] Segment Performance - Vinyls segment sales for 1Q21 were $1820 million, a 14% increase compared to $1590 million in 4Q20 and a 21% increase compared to $1505 million in 1Q20[15] - Vinyls segment EBITDA for 1Q21 was $367 million, a 10% increase compared to $334 million in 4Q20 and a 58% increase compared to $232 million in 1Q20[15] - Olefins segment sales for 1Q21 were $537 million, a 43% increase compared to $375 million in 4Q20 and a 26% increase compared to $427 million in 1Q20[18] - Olefins segment EBITDA for 1Q21 was $216 million, a 266% increase compared to $59 million in 4Q20 and a 120% increase compared to $98 million in 1Q20[18] Industry Outlook and Sustainability - The company is focused on sustainability, launching green caustic soda with a reduced CO2 impact of more than 30% compared to conventional caustic soda[4, 10] - Over a five-year period, Westlake has reduced Sulphur Dioxide emissions to almost zero and achieved a nearly 30% reduction on CO2 emissions[4]

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, 2020 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. 001-36567 Westlake Chemical Partners LP 2801 Post Oak Boulevard, Suite 600 Houston, Texas 77056 (Address of principal executive offic ...

Westlake Chemical Partners LP (NYSE:WLKP) Q4 2020 Results Conference Call February 23, 2021 12:00 PM ET Company Participants Jeff Holy - Vice President and Treasurer Albert Chao - President and Chief Executive Officer Steve Bender - Senior Vice President and Chief Financial Officer Conference Call Participants Matthew Blair - Tudor, Pickering Holt Stephen Byrne - Bank of America Operator Good afternoon. Thank you for standing by. Welcome to the Westlake Chemical Partners Fourth Quarter 2020 Earnings Confere ...