Westlake Ownership

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

Recent Insider Transactions

NYSE:WLK Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
29 Nov 24	SellUS$225,888	Tsung-Hung Chao	Individual	1,750	US$129.08
22 Nov 24	SellUS$227,500	Tsung-Hung Chao	Individual	1,750	US$130.00
09 May 24	SellUS$554,750	Robert Buesinger	Individual	3,500	US$158.50
03 May 24	SellUS$753,341	Mark Bender	Individual	4,950	US$152.19
15 Mar 24	SellUS$560,371	Robert Buesinger	Individual	3,878	US$144.50
13 Mar 24	SellUS$17,629	Robert Buesinger	Individual	122	US$144.50
06 Mar 24	SellUS$677,455	Mark Bender	Individual	4,804	US$141.02
26 Feb 24	SellUS$667,765	Mark Bender	Individual	4,854	US$137.57

Insider Trading Volume

Insider Buying: WLK insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of WLK?
Owner Type	Number of Shares	Ownership Percentage
State or Government	22,037	0.0169%
Individual Insiders	954,199	0.734%
Institutions	35,647,093	27.4%
Private Companies	93,405,554	71.8%

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

Top Shareholders

Top 25 shareholders own 93.01% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
72.6%	TTWF LP	93,405,554	US$10.2b	0%	no data
3.01%	The Vanguard Group, Inc.	3,877,973	US$425.5m	0.55%	0.01%
2.84%	BlackRock, Inc.	3,657,895	US$401.3m	4.58%	0.01%
2.57%	Victory Capital Management Inc.	3,313,847	US$363.6m	21%	0.35%
1.12%	FMR LLC	1,435,786	US$157.5m	-47.4%	0.01%
1%	Capital Research and Management Company	1,287,501	US$141.3m	0.12%	0.01%
0.93%	State Street Global Advisors, Inc.	1,194,249	US$131.0m	-0.37%	no data
0.77%	Balyasny Asset Management L.P.	993,150	US$109.0m	733%	0.27%
0.73%	Dimensional Fund Advisors LP	934,122	US$102.5m	4.89%	0.02%
0.71%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	910,452	US$99.9m	6.82%	0.02%
0.7%	UBS Asset Management AG	904,349	US$99.2m	152%	0.01%
0.7%	Goldman Sachs Asset Management, L.P.	896,342	US$98.3m	41.8%	0.03%
0.69%	Mirae Asset Global Investments Co., Ltd.	882,474	US$96.8m	5.7%	0.09%
0.64%	First Trust Advisors LP	827,516	US$90.8m	56.8%	0.07%
0.62%	Jacobs Levy Equity Management Inc	799,250	US$87.7m	34.3%	0.31%
0.53%	Citadel Advisors LLC	680,331	US$74.6m	29.8%	0.07%
0.43%	Geode Capital Management, LLC	557,943	US$61.2m	0.96%	no data
0.43%	Albert Chao	554,916	US$60.9m	0%	no data
0.32%	Norges Bank Investment Management	406,712	US$44.6m	2.88%	no data
0.29%	Allspring Global Investments, LLC	376,460	US$41.3m	-2.59%	0.06%
0.29%	1832 Asset Management L.P.	376,000	US$41.3m	100%	0.06%
0.29%	Janus Henderson Group plc	372,196	US$40.8m	84.8%	0.02%
0.28%	Schroder Investment Management North America Inc.	364,274	US$40.0m	349%	0.13%
0.27%	Renaissance Technologies LLC	350,700	US$38.5m	109%	0.06%
0.27%	ExodusPoint Capital Management, LP	344,790	US$37.8m	82.3%	0.37%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/02/22 12:13
End of Day Share Price	2025/02/21 00:00
Earnings	2024/09/30
Annual Earnings	2023/12/31

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 Dividends, Splits 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 securities, for 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 page, we 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 St, details of our process are available on Github.

Analyst Sources

Westlake Corporation is covered by 30 analysts. 14 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
null null	Alembic Global Advisors
Michael Leithead	Barclays
Frank Mitsch	BB&T Capital Markets