As of November 6, 2026, Westlake Chemical Partners LP has Schedule 13D or 13G filings on record, none whose latest reports a stake of 5% or more. 2 filings are on record since August 14, 2025 (Schedule 13G, February 17, 2026).
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Westlake Chemical Partners LP has 2 Schedule 13D or 13G filings on record since 2025-08-14. No holder's latest filing reports 5% or more. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Energy Income Partners, LLC | 4.44% | 1,564,489 | SCHEDULE 13G, 2026-02-17 | 2025-12-31 |
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More on Westlake Chemical Partners LP and the records around it.
Westlake Chemical Partners LP elsewhere on the record
- Leadership changes Aug 2026
- Who owns it
Companies that share a holder
- Energy Income Partners, LLC also filed stake reports on 2 other companies: Clearway Energy, Inc. (Aug 2026)
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Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-14 | Energy Income Partners, LLC | 5.04% | SCHEDULE 13G |
| 2026-02-17 | Energy Income Partners, LLC | 4.44% | SCHEDULE 13G |
Also on the record for Westlake Chemical Partners LP
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 31, 2026 | Leadership change: Tommy E. Darby appointed, Chief Accounting Officer | — | Leadership changes | Source |
| April 20, 2026 | Leadership change: Jonathan H. Baksht appointed, Chief Financial Officer | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.