Westlake Chemical Partners LP
WLKP- Exchange
- NYSE
- Industry
- Industrial Organic Chemicals
- SEC CIK
- 0001604665
No open-market purchases or sales by Westlake Chemical Partners LP insiders were filed in the last 90 days; 56 institutions reported holding it in 13F filings for Q2 2026, worth $228.0M in total; no superinvestor holds it.
Holders of 5% or more of WLKP
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Westlake Chemical Partners LP, largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Westlake Chemical Partners LP on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on Westlake Chemical Partners LP, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Feb 17, 20269:02 AM ET | Energy Income Partners, LLCand 4 others | 13G | 4.44%1.56M shares | −0.60 ppfrom 5.04%Below 5% | Dec 31, 2025 | SEC |
| Aug 14, 20252:00 PM ET | Energy Income Partners, LLCand 4 others | 13G | 5.04%1.77M shares | +0.07 ppfrom 4.97% | Jun 30, 2025 | SEC |
| May 15, 20253:00 PM ET | Energy Income Partners, LLCand 4 others | 13G/A | 4.97%1.75M shares | –Below 5% | Mar 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Westlake Chemical Partners LP shares.
No Form 144 notices for Westlake Chemical Partners LP are on file.