Welcome to our dedicated page for Westlake Chem Partners Lp SEC filings (Ticker: WLKP), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Westlake Chemical Partners LP (NYSE: WLKP) SEC filings page on Stock Titan provides access to the partnership’s key regulatory documents, along with AI-powered summaries to help interpret complex disclosures. Westlake Chemical Partners is a limited partnership formed by Westlake Corporation to operate, acquire and develop ethylene production facilities and other qualified assets, and its filings offer detailed insight into this structure.
Through its Annual Reports on Form 10-K, the partnership presents audited financial statements, discussions of its ethylene production assets, and explanations of its commercial arrangements with Westlake, including the Ethylene Sales Agreement and Feedstock Supply Agreement. Quarterly Reports on Form 10-Q update investors on interim financial performance, MLP distributable cash flow, coverage ratios and EBITDA, as well as the effects of plant turnarounds and maintenance capital expenditures.
Current reports on Form 8-K document material events such as the renewal of the Ethylene Sales Agreement and Feedstock Supply Agreement through specified dates, amendments to the Services and Secondment Agreement and Omnibus Agreement, and the announcement of quarterly earnings results. These filings describe how 95% of OpCo’s ethylene production is sold to Westlake under a fixed cash margin formula and outline Westlake’s ownership interests and indemnification obligations.
Stock Titan’s interface highlights real-time updates from EDGAR and uses AI to summarize lengthy 10-K and 10-Q filings, making it easier to understand revenue drivers, non-GAAP metrics like MLP distributable cash flow and EBITDA, and the partnership’s capital structure, including long-term debt payable to Westlake. Users can also review filings that relate to distributions, tax notices for non-U.S. investors and other governance matters.
For investors analyzing WLKP’s regulatory history, this page offers a focused view of how Westlake Chemical Partners reports its ethylene operations, partnership arrangements and financial performance over time.
Westlake Chemical Partners LP is registering up to $500,000,000 of securities under a shelf prospectus, to be offered from time to time in one or more offerings, subject to completion.
The registration covers common units, other classes of partnership units, and debt securities (which may be co-issued by WLKP Finance Corp.). Specific terms, including amounts and pricing, will be set forth in prospectus supplements when each offering is launched.
Westlake Chemical Partners files its annual report describing an ethylene-focused partnership structure closely tied to Westlake Corporation. The partnership owns a 22.8% limited partner interest and the general partner of OpCo, whose three U.S. ethylene plants and a 200‑mile pipeline provide about 3.7 billion pounds of annual capacity.
Westlake buys at least 95% of OpCo’s planned ethylene output under a cost‑plus Ethylene Sales Agreement that includes a fixed $0.10‑per‑pound margin and now runs through December 31, 2027, alongside a renewed Feedstock Supply Agreement. This dependence concentrates credit and contract-renewal risk.
The report highlights environmental and climate regulations, potential capital needs for compliance, cybersecurity threats, variable-rate debt exposure, and the conflict-prone governance structure where Westlake controls the general partner. As of December 31, 2025, non‑affiliate common units had an aggregate market value of about $425.6 million, with 35,245,879 common units outstanding as of February 25, 2026.
Westlake Chemical Partners LP reported softer results for 2025, mainly due to its planned Petro 1 turnaround. Fourth-quarter 2025 net income attributable to the Partnership was $14.5 million, or $0.41 per unit, slightly below $15.0 million a year earlier, while operating cash flow fell to $120.4 million from $132.5 million. However, MLP distributable cash flow rose to $18.8 million, giving a strong quarterly coverage ratio of 1.13x.
For full year 2025, net income attributable to the Partnership declined to $48.7 million from $62.4 million, and operating cash flow dropped to $280.5 million from $485.0 million, reflecting turnaround costs and lower volumes. Full-year MLP distributable cash flow was $53.4 million, down from $66.9 million. The Partnership declared a quarterly distribution of $0.4714 per unit, its 46th consecutive payout, and expects higher production and an improved coverage ratio in 2026 with no planned turnarounds.
Westlake Chemical Partners LP announced that M. Steven Bender plans to retire as Executive Vice President and Chief Financial Officer of its general partner and from the general partner’s Board of Directors. His retirement will be effective upon the appointment of his successor as chief financial officer.
The company states that Mr. Bender’s decision to retire was not the result of any disagreement with Westlake Chemical Partners GP LLC or Westlake Chemical Partners LP.
Westlake Chemical Partners LP received a Schedule 13G reporting that Energy Income Partners, LLC, together with James J. Murchie, Eva Pao, Saul Ballesteros and John K. Tysseland, beneficially owned 1,564,489 common units, or 4.44% of the class, as of 12/31/2025.
The group reports sole voting and dispositive power over 268,609 units and shared voting and dispositive power over 1,295,880 units. They certify the units were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the partnership.
Westlake Chemical Partners LP (WLKP) reported lower profitability in Q3 2025 while renewing its core commercial agreements. Net sales were $308.9 million, up 11.5% year over year on higher ethylene pricing to Westlake. Net income was $86.2 million, with $14.7 million attributable to the Partnership, or $0.42 per common unit. EBITDA was $126.1 million. Gross margin narrowed as ethane and natural gas costs rose.
Year to date, net income was $214.3 million on $843.6 million of net sales. Operating cash flow totaled $160.1 million, reflecting turnaround-related cash use and working-capital shifts. The Partnership declared a quarterly cash distribution of $0.4714 per common unit for Q3, payable November 26, 2025. Long‑term debt payable to Westlake was $399.7 million at quarter‑end.
Strategic update: On October 28, 2025, OpCo and Westlake renewed the Ethylene Sales Agreement and Feedstock Supply Agreement through December 31, 2027, and aligned the Services and Secondment and Omnibus agreements with those terms. Westlake accounted for 89.5% of Q3 net sales, underscoring the importance of these arrangements.
Westlake Chemical Partners LP renewed its Ethylene Sales Agreement and Feedstock Supply Agreement with Westlake Corporation, extending them through December 31, 2027. The contracts include an initial term through December 31, 2026 and automatic 12‑month renewals, with termination permitted at the end of the initial or any renewal term on not less than 12 months’ notice.
Related amendments align the Services and Secondment Agreement’s term with the ethylene contract and provide that the Omnibus Agreement will terminate upon termination of the Ethylene Sales Agreement. The Omnibus amendment also addresses procedural requirements tied to Westlake’s indemnity obligations, including environmental and tax matters. The partnership furnished a Q3 2025 results press release and separate materials discussing the renewal.
Jean-Marc Gilson, President and CEO and a director of Westlake Chemical Partners LP (WLKP), reported an open-market purchase of 11,803.485 common units on 08/27/2025 at a price of $21.25 per unit, increasing his beneficial ownership to 11,803.485 units. The Form 4 was signed by proxy (J. Feng) on 08/29/2025. The filing identifies the reporting person as both an officer (President and CEO) and a director and indicates the form was filed by one reporting person.
Westlake Chemical Partners LP (WLKP) insider purchases reported by Jean-Marc Gilson, President and CEO and director. The filing documents multiple open-market acquisitions of common units executed between 11/27/2024 and 08/21/2025, increasing the reporting person’s beneficial ownership from 4,331.96 units to 11,708.195 units. Transaction prices range roughly from $21.81 to $24.75 per unit; some later entries note weighted-average prices from multiple trades. An explanatory note states certain earlier purchases were inadvertently omitted and have been reconciled. No derivative transactions are reported.