WLKP on NYSE

Westlake Chemical Partners LP

American industrial organic chemicals company based in Wilmington.

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Last updated Oct 18, 2026.

Overview

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  • TickerWLKP on NYSE
  • IndustryIndustrial Organic Chemicals
  • HeadquartersWilmington, United States
  • Incorporated inDE2
  • Business address5444 Westheimer, Suite 101, Houston, Tx2
  • Filer categoryAccelerated filer2

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Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2025

29.8%Gross margin3
27.4%Operating margin3
4.2%Net margin3
2.7%Revenue growth, 20253
$201.7MFree cash flow3

Where the money goes

Where each dollar of revenue went, fiscal 2025

  • Cost of revenue70¢$818.8M
  • Selling, general and admin2¢$28.3M
  • Other costs23¢$270.3M
  • Income tax0¢$547.0K
  • Profit4¢$48.7M

Out of $1.2B in revenue.3

Where each dollar of operating cash went, fiscal 2025

  • Capital spending28¢$78.8M
  • Kept or used elsewhere72¢$201.7M

Out of $280.5M of cash from operations.3

Financial statements

Revenue453$1.2B in 2025+656% since 2019
0$500.0M$1.0B$1.5B2019: $154.2M$154.2M20192020: $78.4M$78.4M2020−49%2021: $188.3M$188.3M2021+140%2022: $250.2M$250.2M2022+33%2023: $1.2B$1.2B2023+376%2024: $1.1B$1.1B2024−5%2025: $1.2B$1.2B2025+3%
Gross profit45673$347.8M in 2025−8% since 2019
0$200.0M$400.0M$600.0M2019: $379.4M$379.4M20192020: $378.9M$378.9M2020−0%2021: $441.7M$441.7M2021+17%2022: $377.4M$377.4M2022−15%2023: $387.5M$387.5M2023+3%2024: $418.9M$418.9M2024+8%2025: $347.8M$347.8M2025−17%
Operating income45673$319.6M in 2025−9% since 2019
0$200.0M$400.0M$600.0M2019: $350.1M$350.1M20192020: $353.0M$353.0M2020+1%2021: $410.7M$410.7M2021+16%2022: $347.7M$347.7M2022−15%2023: $357.7M$357.7M2023+3%2024: $390.4M$390.4M2024+9%2025: $319.6M$319.6M2025−18%
Net income45673$48.7M in 2025−20% since 2019
0$25.0M$50.0M$75.0M$100.0M2019: $61.0M$61.0M20192020: $66.2M$66.2M2020+9%2021: $82.5M$82.5M2021+25%2022: $64.2M$64.2M2022−22%2023: $54.3M$54.3M2023−15%2024: $62.4M$62.4M2024+15%2025: $48.7M$48.7M2025−22%

Every line of the income statement as filed: the last 3 fiscal years, latest first.3

Period ending2025-12-312024-12-312023-12-31
Total net sales$1.2B$1.1B$1.2B
Cost of sales$818.8M$717.0M$803.3M
Gross profit$347.8M$418.9M$387.5M
Selling, general and administrative expenses$28.3M$28.5M$29.8M
Income from operations$319.6M$390.4M$357.7M
Interest expenseWestlake-$22.9M-$25.7M-$26.5M
Other income, net$2.4M$5.3M$4.2M
Income before income taxes$299.1M$370.0M$335.4M
Provision for income taxes$547.0K$835.0K$813.0K
Net income$298.6M$369.2M$334.6M
Less: Net income attributable to noncontrolling interest in OpCo$249.9M$306.8M$280.3M
Net income attributable to Westlake Chemical Partners LP and limited partners' interest in net income$48.7M$62.4M$54.3M
Weighted average limited partner units outstanding (basic and diluted)35.2M shares35.2M shares35.2M shares

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Leadership

Who has led Westlake Chemical Partners LP, and when. Pick a name to see everywhere that person has worked.

Chief executive

  1. Jean-Marc Gilson2024–now

President

  1. Jean-Marc Gilson2024–now

Chief financial officer

  1. Mark Steven Bender2014–2020
  2. Jonathan Baksht2026–now
201520202025
Board members and other officers (21)

Timeline

  1. Jul 15, 2024New chief executive Jean-Marc Gilson becomes CEO11
  2. Jun 20, 2023Parent Directly consolidated by Westlake Corporation31
  3. Mar 14, 2014Founded Westlake Chemical Partners LP is founded31

Filings

141 filings to the SEC since October 2021: 5 annual reports, 15 quarterly reports, 28 major events, 64 insider forms, 15 large holders, 14 other. The latest 20:

  1. Aug 31, 20263 EDGAR
  2. Aug 31, 20268-K EDGAR
  3. Aug 13, 20264 EDGAR
  4. Aug 13, 20264 EDGAR
  5. Aug 13, 20264 EDGAR
  6. Aug 7, 20264 EDGAR
  7. Aug 7, 20264 EDGAR
  8. Aug 7, 20264 EDGAR
  9. Aug 5, 202610-Q EDGAR
  10. Aug 4, 20268-K EDGAR
  11. Jun 15, 20263 EDGAR
  12. May 6, 202610-Q EDGAR
  13. May 5, 20268-K EDGAR
  14. Apr 20, 20268-K EDGAR
  15. Mar 11, 2026EFFECT EDGAR
  16. Mar 9, 2026CORRESP EDGAR
  17. Mar 9, 2026UPLOAD EDGAR
  18. Mar 4, 202610-K EDGAR
  19. Mar 4, 2026S-3 EDGAR
  20. Feb 24, 20268-K EDGAR

The 141 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last three years, summarized. The full record is on SEC EDGAR.

Insider trades and holders

Large holders

Investors who own more than 5% must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively. 15 such filings since October 2021, the latest 10:

  1. Feb 17, 2026SCHEDULE 13G
  2. Aug 14, 2025SCHEDULE 13G
  3. May 15, 2025SCHEDULE 13G/A
  4. Feb 14, 2024SC 13G/A
  5. Feb 14, 2024SC 13D/A
  6. Feb 12, 2024SC 13G/A
  7. Feb 7, 2024SC 13G/A
  8. Feb 14, 2023SC 13G/A
  9. Feb 10, 2023SC 13G/A
  10. Jan 23, 2023SC 13G/A

From Forms 4 and Schedules 13D and 13G filed with the SEC.

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 56. Change is in shares since the quarter before.

FundSharesValueShare of the fundChange
Invesco Ltd.4,972,812$110.7M0.0%No change
Energy Income Partners, LLC1,589,566$35.4M0.6%+7,559
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.719,852$16.0M0.0%+28,057
Clearbridge Investments, LLC633,569$14.1M0.0%No change
UBS Group AG442,165$9.8M0.0%−15,562
Goldman Sachs Group Inc238,363$5.3M0.0%+18,705
Citigroup Inc218,105$4.9M0.0%−10,650
Bank Of America Corp /de/174,309$3.9M0.0%−53,843
Morgan Stanley170,333$3.8M0.0%−10,238
Pathway Financial Advisers, LLC107,894$2.4M0.6%+1,296
Jpmorgan Chase & Co95,305$2.1M0.0%+1,200
Gilman Hill Asset Management, LLC88,279$2.0M0.3%+1,077
Ing Groep Nv82,000$1.8M0.0%No change
Fractal Investments LLC80,400$1.8M0.2%No change
Advisory Services Network, LLC63,700$1.4M0.0%+18,700
LPL Financial LLC46,544$1.0M0.0%+312
Eagle Global Advisors LLC43,873$976.6K0.0%No change
Samalin Investment Counsel, LLC42,248$940.4K0.3%+358
Pinnacle Holdings, LLC38,942$866.8K0.3%No change
Envestnet Asset Management Inc30,107$670.2K0.0%+9,683
Arax Advisory Partners25,600$569.9K0.0%New
Hilltop Holdings Inc.23,830$530.5K0.0%No change
Apollon Wealth Management, LLC23,519$523.5K0.0%+2,435
Glenmede Trust Co Na23,328$519.3K0.0%−2,950
Pekin Hardy Strauss, Inc.20,386$453.8K0.0%New

13F reports cover disclosed long positions in U.S. stocks only.

Sources

The numbers on this page point here. Each one links to the record it came from.

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