December 15, 2025 Westlake Performance & Essential Materials Update October 30, 2025 WLKP ESA Renewal August 12, 2025 Citi’s 2025 Natural Resources Conference May 28, 2021 WLKP IR Presentation 1Q 2021 November 18, 2020 WLKP IR Presentation 3Q 2020 August 24, 2020 WLKP IR Presentation April 30, 2020 WLKP Q1 2020 Distribution April 3, 2020 WLKP IR Presentation October 31, 2019 New Distribution Strategy October 31, 2019 WLKP IR Presentation