Company Analysis

Westlake Corporation (WLK)

NYSE: WLK · Industrial Organic Chemicals · Houston, TX · filing with the SEC since 2003
Grade5.3
◀ Past 6.7● Present 5.3▶ Future 4.0

The grade of Westlake Corporation

Nine metrics read from its own filings, by tense
Headline grade
5.3/10
◀ Past6.730% of the headline
● Present5.340% of the headline
▶ Future4.030% of the headline

All three tenses have at least two readings, so the archetype blend applies as printed.

All nine metrics read as filed from the record.

◀ Past

What did they actually do?

6.7/1030% of the headline grade · 3 of 3 filed

Surviving crises

as filed
8.1/10

Has it survived what it has been through?

No warning events in its filings since 2017.

weight 33% of this tense · 81st percentile among 21 sector filers · read for itself

From the record

Westlake Corporation's filings since 2017 show no warning events in the scan: no bankruptcy or receivership notice, no debt default notice, no exchange listing notice, no restatement warning, no auditor change, no material cyber incident and no late-report notice (its current reports).

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Track record

as filed
5.8/10

What has it actually done, year after year?

+9.2% a year over 10 filed years; profitable in 9 of 10.

weight 45% of this tense · 58th percentile among 19 sector filers · read for its customers

From the record

Westlake Corporation's 10 filed years say what it did: revenue went from $5.1 billion in fiscal 2016 to $11 billion in fiscal 2025, up 9.2% a year; it rose in 4 of 9 years; the deepest fall was 29% from fiscal 2022 to fiscal 2025; net income was positive in 9 of 10 of those years (its annual reports).

What it rests on

  • revenue growth over the filed span9.2%top 24% of its family
  • the share of years revenue rosebottom 24% of its family
  • the share of filed years with a profittop 29% of its family
  • the deepest fall from a revenue peak29.3%top 39% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Shareholder treatment

as filed
6.5/10

How has it treated the people who own it?

Share count shrank 0.2% a year. 22% of cash flow returned. Insiders: 9 sales, 0 purchases.

weight 22% of this tense · 65th percentile among 10 sector filers · read for its shareholders

From the record

Over the 3 fiscal years to 2025-12-31, Westlake Corporation's diluted share count shrank about 0.2% a year, and dividends and buybacks returned about 22% of its operating cash flow over 3 years (its filed statements). Its officers and directors filed 9 sales and 0 purchases of their own stock on the open market in the year to 2026-09-30 (their Form 4 filings).

What it rests on

  • the share count over the yearstop 21% of its family
  • cash returned against operating cash flowtop 50% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

● Present

What are they doing right now?

5.3/1040% of the headline grade · 3 of 3 filed

Financial health

as filed
4.6/10

Is it financially healthy right now?

ROE -17%: lost 17¢ per shareholder dollar. Leverage 56%: owes 56¢ per asset dollar.

weight 45% of this tense · 46th percentile among 20 sector filers · read for itself

From the record

Return on equity: in the fiscal year ended 2025-12-31, Westlake Corporation lost about 17 cents for every dollar of shareholders' money, and gross profitability: its products earned about 4 cents per dollar of everything the company owns. Leverage: it owed about 56 cents per dollar of assets, and net share issuance: its share count shrank 0.7% over the year (the filed statements).

What it rests on

  • what it owes per dollar of assetsbottom 38% of its family
  • return on equitybottom 31% of its family
  • gross profit against assetsbottom 32% of its family
  • the share count against the year beforetop 15% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Industry position

as filed
5.8/10

How strong is its position in its industry?

top 42% of 20 in its family; net margin -13.5%.

weight 33% of this tense · 58th percentile among 20 sector filers · read for its customers

From the record

Westlake Corporation's standing among 20 graded names in its industry family: revenue of $11 billion in fiscal 2025 ranks in the top 7% by size; a net margin of -13.5% ranks in the bottom 48%; revenue growth of -10.9% a year over the last 3 filed years ranks in the bottom 34% (its annual reports).

What it rests on

  • revenue against the family$11.17Btop 7% of its family
  • net margin-13.5%bottom 48% of its family
  • three-year revenue growth-10.9%bottom 34% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Leadership

as filed
6.0/10

What are the people in charge doing?

top 41% of 17 in its family for leadership; chief executive since 2024.

weight 22% of this tense · 59th percentile among 17 sector filers · read for its shareholders

From the record

Westlake Corporation's leadership, from its insiders' filings and its current reports: the chief executive on the record is Gilson, Jean-Marc (President and CEO, as filed), filing under that title since 2024-07-15, 2.3 years (bottom 44% of its family); the 22 officers and directors filing in the last fifteen months have been on the record a median of 7.4 years (top 30%); 11 officer or director changes were reported on Form 8-K since 2023-11-14, against the 22 people in charge now (top 35%; fewer changes for each person reads higher) (the Form 4 record, its Form 8-K reports). Years count from a person's first filing in the SEC's data sets, which begin in 2006, so each is a floor.

What it rests on

  • officer and director changes on Form 8-K, against the people in charge11 in three years among 22 peopletop 35% of its family
  • the median years the people in charge have filed7.4 yearstop 30% of its family
  • the chief executive's years on the record2.3 yearsbottom 44% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

▶ Future

What are they set up to do next?

4.0/1030% of the headline grade · 3 of 3 filed

Room to expand

as filed
4.5/10

How much room does it have to grow?

bottom 45% of 20 in its family for room to expand.

weight 45% of this tense · 45th percentile among 20 sector filers · read for itself

From the record

Westlake Corporation's room to grow, from the newest filed statements (fiscal 2025): cash of $2.7 billion against debt of $5.1 billion leaves -11.8% of its assets as net cash, bottom 40% of its family; cash from operations less capital spending is -4.7% of revenue (top 47%); a gross margin of 7.3% (bottom 42%) (its annual report).

What it rests on

  • cash less debt against assets-11.8%bottom 40% of its family
  • cash from operations less capital spending against revenue-4.7%top 47% of its family
  • gross margin7.3%bottom 42% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Growth drivers

as filed
3.8/10

What could actually drive growth from here?

bottom 38% of 19 in its family for growth drivers.

weight 33% of this tense · 38th percentile among 19 sector filers · read for its customers

From the record

Westlake Corporation's growth drivers, from the filed years to fiscal 2025: revenue grew -10.9% a year over the last three filed years against 9.2% over all 10, slowing (bottom 18% of its family); the newest year grew -8% (bottom 45%); capital spending grew -3.5% a year (top 50%) (its annual reports). Westlake Corporation reported 2 lines of business in fiscal 2025: Performance and Essential Materials at $7.0 billion, Housing and Infrastructure Products at $4.1 billion. 0 of 2 grew in the latest filed year, and the largest line is 63% of revenue (its annual report).

What it rests on

  • three-year growth against the whole span-20.1 points a yearbottom 18% of its family
  • the newest year's revenue growth-8.0%bottom 45% of its family
  • three-year growth of capital spending-3.5%top 50% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

Expectations vs reality

as filed
3.3/10

Did its newest year beat what its own record pointed to?

bottom 32% of 19 in its family for expectations against reality.

weight 22% of this tense · 32nd percentile among 19 sector filers · read for its shareholders

From the record

Westlake Corporation's newest year against its own record: revenue of $11 billion in fiscal 2025 came in 4.9% above the $11 billion its prior three years' pace pointed to (top 34% of its family); net income of $1.5 billion against a prior three-year average of $1.1 billion (bottom 13%); a net margin of -13.5% against 7.7% before (bottom 18%) (its annual reports).

What it rests on

  • revenue against the prior three years' pace4.9%top 34% of its family
  • net income against the prior three years' average-236%bottom 13% of its family
  • net margin against its prior average-21.2 pointsbottom 18% of its family

A production reading, recomputed from the filings on every data build, read from EDGAR Nov 13, 2026.

The grade is the company against its own industry, from its filings. It is not a view on the share price. How the grade is made

SI Assistanton WLK · research, not advice