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SEC Edgar

WESTLAKE CHEMICAL CORP

SIC 2860 · Industrial Organic Chemicals
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$WLK

WESTLAKE CHEMICAL CORP

CIK:0001262823|SEC Filings

INDENTURES

EX-4.9
exhibit4912312510-k.htm
2026-02-26T00:00:00Z
EX-4.1
exhibit4112312310-k.htm
2024-02-22T00:00:00Z
EX-4.1
exhibit4112311910-k.htm
2020-02-19T00:00:00Z
EX-4.19
exhibit41912311710-k.htm
2018-02-21T00:00:00Z
EX-4.18
exhibit41812311610-k.htm
2017-02-22T00:00:00Z
EX-4.1
exhibit41_20140630.htm
2014-08-06T00:00:00Z
EX-4.2
exhibit42_20130630.htm
2013-07-31T00:00:00Z
EX-4.4
exhibit44_20130630.htm
2013-07-31T00:00:00Z
EX-4.1
exhibit41_20130630.htm
2013-07-31T00:00:00Z
EX-4.3
exhibit43_20130630.htm
2013-07-31T00:00:00Z
EX-4.16
exhibit41612311210k.htm
2013-02-22T00:00:00Z
EX-4.2
d72149dex42.htm
2025-11-05T00:00:00Z
EX-4.7
d398394dex47.htm
2023-05-11T00:00:00Z
EX-4.2
d198475dex42.htm
2021-08-19T00:00:00Z
EX-4.2
d943281dex42.htm
2020-06-12T00:00:00Z
EX-4.4
d770084dex44.htm
2019-07-17T00:00:00Z
EX-4.2
d770084dex42.htm
2019-07-17T00:00:00Z
EX-4.3
d499857dex43.htm
2017-11-28T00:00:00Z
EX-4.2
d499857dex42.htm
2017-11-28T00:00:00Z
EX-4.6
d499857dex46.htm
2017-11-28T00:00:00Z