November 16, 2020 Westlake IR Presentation for Projection 2020 Q3 November 10, 2020 Morgan Stanley Virtual Global Chemicals, Agriculture, and Packaging Conference November 3, 2020 Third Quarter 2020 Earnings Presentation September 9, 2020 UBS Chemical Virtual Conference August 11, 2020 Susquehanna Energy, Industrials & Airlines Virtual Conference August 6, 2020 Second Quarter 2020 Earnings Presentation August 4, 2020 Jefferies Virtual Industrials Conference June 25, 2020 WLK Roadshow June 2020 June 24, 2020 BMO 2020 Chemicals & Packaging Virtual Conference May 27, 2020 Keybanc Industrials & Basic Materials Virtual Conference