Westlake Chemical Partners LP

WLKP·NYSE·$22.71Share Price as of 11/2·$800MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/05/26 10-QQ1 ended 03/31/2605/06/26 10-KFY 202503/04/26 10-QQ3 ended 09/30/2510/31/25 10-QQ2 ended 06/30/2508/06/25

Disclosures

8-KCurrent report08/31/26 8-KCurrent report08/04/26 8-KCurrent report05/05/26 8-KCurrent report04/20/26 8-KCurrent report02/24/26

Prospectuses and Registrations

S-3Shelf registration03/04/26 S-8 POSPost-effective amendment (S-8)05/10/24 S-3Shelf registration03/01/23 S-3Shelf registration02/28/20 S-3Shelf registration03/29/19

Proxies

DEF 14ADefinitive proxy03/18/24 DEFA14AAdditional proxy materials03/18/24

Ownership

Form 3Initial insider ownership08/31/26 Form 4Insider transaction08/13/26 Form 4Insider transaction08/13/26 Form 4Insider transaction08/13/26 Form 4Insider transaction08/07/26

Other

EFFECTRequest for effectiveness03/11/26 CORRESPCorrespondence with the SEC03/09/26 UPLOADLetter from the SEC03/09/26 EFFECTRequest for effectiveness03/20/23 CORRESPCorrespondence with the SEC03/16/23