| Filed On | Filing |
|---|---|
| 11 Jan 2021 | SCHEDULE 13G |
| 14 Feb 2020 | SCHEDULE 13G |
| 10 Jun 2019 | SEC SCHEDULE 13G |
| 13 Feb 2019 | JANUS HENDERSON GROUP PLC OWNS 5.5% OF WESTLAKE |
| 06 Feb 2019 | SC 13G |
| 03 Apr 2018 | SC 13G |
| 14 Feb 2017 | SC 13G/A |
| 07 Jan 2016 | SCHEDULE 13G |
| 21 May 2015 | SCHEDULE 13G |
| 17 Feb 2015 | NONE |
| 13 Feb 2015 | SC 13G |
| 13 Feb 2015 | SC 13G |
| 11 Aug 2014 | SCHEDULE 13G |
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