Westlake Chemical Partners Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:WLKP Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
27 Aug 25	BuyUS$2,025	Jean-Marc Gilson	Individual	95.29	US$21.25
21 Aug 25	BuyUS$166,936	Jean-Marc Gilson	Individual	7,613.73	US$22.95
29 May 25	SellUS$81,770	James Chao	Individual	3,700	US$22.10
28 May 25	SellUS$225,989	James Chao	Individual	10,208	US$22.17
25 Feb 25	BuyUS$4,044	Jean-Marc Gilson	Individual	167.47	US$24.75

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of WLKP?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	452,244	1.28%
General Public	9,099,587	25.8%
Institutions	10,160,856	28.8%
Private Companies	15,533,192	44.1%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 73.01% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
44.1%	TTWF LP	15,524,099	US$306.8m	0%	no data
14.3%	Invesco Ltd.	5,028,724	US$99.4m	-3.27%	0.02%
5.04%	Energy Income Partners LLC	1,776,597	US$35.1m	0.12%	0.63%
1.64%	Mirae Asset Global Investments Co.Ltd.	577,284	US$11.4m	-1.14%	0.01%
1.38%	ClearBridge InvestmentsLLC	485,882	US$9.6m	14.9%	0.01%
1.31%	UBS Asset Management AG	462,764	US$9.1m	-1.56%	no data
0.72%	Bank of America Corporation	254,496	US$5.0m	1.27%	no data
0.65%	The Goldman Sachs GroupInc.	228,162	US$4.5m	-1.02%	no data
0.53%	Citigroup Inc.	185,559	US$3.7m	-1.03%	no data
0.52%	Andrew Kenner	185,000	US$3.7m	0%	no data
0.47%	Albert Chao	166,435	US$3.3m	0%	no data
0.36%	Morgan Stanley Investment Management Inc.	128,277	US$2.5m	13.5%	no data
0.3%	Pathway Financial AdvisersLLC	107,177	US$2.1m	1.2%	0.6%
0.27%	JPMorgan Chase & Co.	94,257	US$1.9m	-0.19%	no data
0.23%	Fractal Investments LLC	80,400	US$1.6m	0%	0.22%
0.22%	Gilman Hill Asset ManagementLLC	77,442	US$1.5m	104%	0.23%
0.15%	ING Groep N.V.	53,000	US$1.0m	152%	no data
0.14%	The Glenmede Trust CompanyNational Association	49,478	US$977.7k	0%	no data
0.12%	Eagle Global AdvisorsLLC	43,873	US$867.0k	0%	0.03%
0.12%	Glenmede Investment ManagementLP	41,778	US$825.5k	0%	no data
0.12%	Advisory Services NetworkLLC	41,000	US$810.2k	10.8%	0.01%
0.11%	Pinnacle HoldingsLLC	39,167	US$774.0k	0%	0.3%
0.097%	Morgan Stanley	34,293	US$677.7k	-11.1%	no data
0.094%	GSA Capital Partners LLP	33,280	US$657.6k	6.22%	0.05%
0.094%	LPL Financial LLC	33,129	US$654.6k	10.2%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/12/14 04:16
End of Day Share Price	2025/12/12 00:00
Earnings	2025/09/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices DividendsSplits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securitiesfor non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github pagewe also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall Stdetails of our process are available on Github.

Analyst Sources

Westlake Chemical Partners LP is covered by 11 analysts. 1 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Michael Leithead	Barclays
Richard Gross	Barclays
Stephen V. Byrne	BofA Global Research