Management's Discussion and Analysis of Financial Condition and Results of Operations
This Management's Discussion and Analysis of Financial Condition and Results of Operations section should be read in conjunction with the accompanying consolidated financial statements and the notes thereto and the consolidated financial statements and notes thereto included in Westlake Chemical Partners LP's annual report on Form 10-K for the fiscal year ended December 31, 2024 (the "2024 Form 10-K"), as filed with the SEC on March 5, 2025. Unless otherwise indicated, references in this report to "we," "our," "us" or like terms, refer to Westlake Chemical Partners LP (the "Partnership"), Westlake Chemical OpCo LP ("OpCo") and Westlake Chemical OpCo GP LLC ("OpCo GP"). References to "Westlake" refer to Westlake Corporation and its consolidated subsidiaries other than the Partnership, OpCo GP and OpCo. The following discussion contains forward-looking statements. Please read "Forward-Looking Statements" for a discussion of limitations inherent in such statements.
Partnership Overview
We are a Delaware limited partnership formed by Westlake to operate, acquire and develop ethylene production facilities and related assets. On August 4, 2014, we closed our initial public offering (the "IPO") of 12,937,500 common units. In connection with the IPO, we acquired a 10.6% interest in OpCo and a 100% interest in OpCo GP, which is the general partner of OpCo. On April 29, 2015, we purchased an additional 2.7% newly-issued limited partner interest in OpCo, resulting in an aggregate 13.3% limited partner interest in OpCo effective April 1, 2015. The 12,686,115 subordinated units of the Partnership, all of which were previously owned by Westlake, were converted into common units of the Partnership on August 30, 2017. On September 29, 2017, we completed a secondary public offering of 5,175,000 common units and purchased an additional 5.0% newly-issued limited partner interest in OpCo, resulting in an aggregate 18.3% limited partner interest in OpCo effective July 1, 2017. On March 29, 2019, we completed a private placement of 2,940,818 common units and used the net proceeds to purchase an additional 4.5% interest in OpCo, effective January 1, 2019, resulting in us owning an aggregate 22.8% limited partner interest in OpCo.
Currently, our sole revenue generating asset is our 22.8% limited partner interest in OpCo, a limited partnership formed by Westlake and us in anticipation of the IPO to own and operate an ethylene production business. We control OpCo through our ownership of its general partner. Westlake retains the remaining 77.2% limited partner interest in OpCo as well as a significant interest in us through its ownership of our general partner, 40.1% of our limited partner units (consisting of 14,122,230 common units) and our incentive distribution rights. OpCo's assets include (1) two ethylene production facilities ("Petro 1" and "Petro 2" and, collectively, "Lake Charles Olefins") at Westlake's Lake Charles, Louisiana site; (2) one ethylene production facility ("Calvert City Olefins") at Westlake's Calvert City, Kentucky site; and (3) a 200-mile common carrier ethylene pipeline (the "Longview Pipeline") that runs from Mont Belvieu, Texas to Westlake's Longview, Texas facility.
Neither we nor OpCo has any employees. OpCo and Westlake are parties to the Services and Secondment Agreement, pursuant to which Westlake provides OpCo with various utility services, comprehensive operating services for OpCo's units, services for the maintenance and operation of the common facilities and seconded employees to perform all services required under the agreement. The Services and Secondment Agreement, as amended, provides for an initial term through December 31, 2026 and, subject to the simultaneous renewal of the Ethylene Sales Agreement, automatic 12-month renewal periods until terminated at the end of the initial term or any renewal term on not less than 12-months' notice.
How We Generate Revenue
We generate revenue primarily by selling ethylene and the resulting co-products we produce. OpCo and Westlake have entered into an ethylene sales agreement (the "Ethylene Sales Agreement") pursuant to which we generate a substantial majority of our revenue. The Ethylene Sales Agreement is a long-term, fee-based agreement with a minimum purchase commitment and includes variable pricing based on OpCo's actual feedstock and natural gas costs and estimated other costs of producing ethylene (including OpCo's estimated operating costs and a five-year average of OpCo's expected future maintenance capital expenditures and other turnaround expenditures based on OpCo's planned ethylene production capacity for the year), plus a fixed margin per pound of $0.10 less revenue from co-products sales. Pursuant to the Ethylene Sales Agreement, Westlake's obligation to pay for the annual minimum commitment (95% of OpCo's budgeted ethylene production), which is measured on an annual basis, is not reduced for a force majeure event lasting fewer than 45 consecutive days. In the event of a force majeure event, we recognize buyer deficiency fees representing fixed margin and unavoided operating and maintenance capital expenditures and maintenance expenses per pound of volume committed by Westlake during the force majeure period. In the event Westlake purchases less than its annual commitment, we recognize buyer deficiency fees representing fixed margin and all expenses and expenditures incurred per pound of volume committed but not taken by Westlake. Payment for the buyer deficiency fee is scheduled to be received by the Partnership after the conclusion of the year.
Westlake has an option to take 95% of volumes in excess of the minimum commitment on an annual basis under the Ethylene Sales Agreement if we produce more than our planned production. Under the Ethylene Sales Agreement, the price for the sale of such excess ethylene to Westlake is based on a formula similar to that used for the minimum purchase commitment, with the exception of certain fixed costs.
In addition, under the Ethylene Sales Agreement, if production costs billed to Westlake on an annual basis are less than 95% of the actual production costs incurred by OpCo during the contract year, OpCo is entitled to recover the shortfall in such production costs (proportionate to the volume sold to Westlake) in the subsequent year ("Shortfall"). The Shortfall is generally recognized during the period in which the related operating, maintenance or turnaround activities occur.
Operating Expenses, Maintenance Capital Expenditures and Turnaround Costs
Our management seeks to maximize the profitability of our operations by effectively managing operating expenses, maintenance capital expenditures and turnaround costs. Our operating expenses are comprised primarily of feedstock costs and natural gas, labor expenses (including contractor services), utility costs (other than natural gas) and turnaround and maintenance expenses. With the exception of feedstock (including natural gas) and utilities-related expenses, operating expenses generally remain relatively stable across broad ranges of production volumes but can fluctuate from period to period depending on the circumstances, particularly maintenance and turnaround activities. Our maintenance capital expenditures and turnaround costs are comprised primarily of maintenance of our ethylene production facilities and the amortization of capitalized turnaround costs. These capital expenditures relate to the maintenance and integrity of our facilities. We capitalize the costs of major maintenance activities, or turnarounds, and amortize the costs over the period until the next planned turnaround of the affected facility.
Operating expenses, maintenance capital expenditures and turnaround costs are built into the price per pound of ethylene charged to Westlake under the Ethylene Sales Agreement. Because the expenses other than feedstock costs and natural gas are based on forecasted amounts and remain a fixed component of the price per pound of ethylene sold under the Ethylene Sales Agreement for any given 12-month period, our ability to manage operating expenses, maintenance expenditures and turnaround costs may directly affect our profitability and cash flows. The impact on profitability is partially mitigated by the fact that we generally recognize any Shortfall as revenue in the period such costs and expenses are incurred. We seek to manage our operating and maintenance expenses on our ethylene production facilities by scheduling maintenance and turnarounds over time to avoid significant variability in our operating margins and minimize the impact on our cash flows, without compromising our commitment to safety and environmental stewardship. In addition, we reserve cash on an annual basis from what we would otherwise distribute to minimize the impact of turnaround costs in the year of incurrence. The purchase price under the Ethylene Sales Agreement is not designed to cover capital expenditures for expansions.
MLP Distributable Cash Flow and EBITDA
The body of accounting principles generally accepted in the United States is commonly referred to as "GAAP." For this purpose, a non-GAAP financial measure is generally defined by the Securities and Exchange Commission ("SEC") as a numerical measure of a registrant's historical or future financial performance, financial position or cash flows that (1) excludes amounts, or is subject to adjustments that have the effect of excluding amounts, that are included in the most directly comparable measure calculated and presented in accordance with GAAP in the statement of income, balance sheet or statement of cash flows (or equivalent statements) of the registrant; or (2) includes amounts, or is subject to adjustments that have the effect of including amounts, that are excluded from the most directly comparable measure so calculated and presented. We use the non-GAAP measures of MLP distributable cash flow and EBITDA to analyze our performance. We define distributable cash flow as net income plus depreciation, amortization and disposition of property, plant and equipment, less contributions for turnaround reserves, maintenance capital expenditures and mark-to-market adjustment on derivative contracts. We define MLP distributable cash flow as distributable cash flow less distributable cash flow attributable to Westlake's noncontrolling interest in OpCo and distributions attributable to the incentive distribution rights holder. MLP distributable cash flow does not reflect changes in working capital balances. We define EBITDA as net income before interest expense, income taxes, depreciation and amortization. We use each of MLP distributable cash flow and EBITDA to analyze our performance. Fees for a buyer deficiency and Shortfall are included in net income in the periods in which they are recognized. MLP distributable cash flow and EBITDA are non-GAAP supplemental financial measures that management and external users of our consolidated financial statements, such as industry analysts, investors, lenders and rating agencies, may use to assess our operating performance as compared to other publicly-traded partnerships; our ability to incur and service debt and fund capital expenditures; and the viability of acquisitions and other capital expenditure projects and the returns on investment of various investment opportunities.
MLP distributable cash flow is not a substitute for the GAAP measures of net income and net cash provided by operating activities. MLP distributable cash flow has important limitations as an analytical tool because it excludes some but not all items that affect net income and net cash provided by operating activities. EBITDA is not a substitute for the GAAP measures of net income, income from operations and net cash provided by operating activities. In addition, it should be noted that companies calculate EBITDA differently and, therefore, EBITDA as presented for us may not be comparable to EBITDA reported by other companies. EBITDA has material limitations as a performance measure because it excludes interest expense, depreciation and amortization, and income taxes. Reconciliations for each of MLP distributable cash flow and EBITDA are included in the "Results of Operations" section below.
RecentDevelopments
Renewal of the Ethylene Sales Agreement and Feedstock Supply Agreement
On October 28, 2025, OpCo and Westlake agreed to renew both the Ethylene Sales Agreement and the Feedstock Supply Agreement through December 31, 2027 in accordance with their respective terms (the "Renewal"), which each provide for an initial term through December 31, 2026 and automatic 12-month renewal periods until terminated at the end of the initial term or any renewal term on not less than 12-months' notice.
Amendments to the Services and Secondment Agreement and Omnibus Agreement
In connection with the Renewal, on October 28, 2025, OpCo and certain affiliates of Westlake entered into an amendment to the Services and Secondment Agreement to align the date of expiration of such agreement with the date of expiration of the Ethylene Sales Agreement. In addition, the Partnership, OpCo and certain affiliates of Westlake also entered into an amendment to the Omnibus Agreement to provide that the Omnibus Agreement would terminate upon termination of the Ethylene Sales Agreement. The amendment also addressed certain procedural requirements in connection with Westlake's obligation to indemnify the Partnership for certain matters, including, among others, environmental and tax matters, under the Omnibus Agreement.
Please refer to the 2024 Form 10-K and Note 8 to the unaudited consolidated financial statements within this Quarterly Report on Form 10-Q for additional discussions related to these agreements.
Results of Operations
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Three Months Ended September 30,
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Nine Months Ended September 30,
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2025
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2024
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2025
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2024
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(in thousands of dollars)
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Revenue
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Net sales-Westlake
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$
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276,539
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$
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215,799
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$
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736,396
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$
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690,535
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Net co-products, ethylene and other sales-third parties
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32,359
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61,196
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107,250
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155,301
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Total net sales
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308,898
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276,995
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843,646
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845,836
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Cost of sales
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209,475
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160,052
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592,610
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525,481
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Gross profit
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99,423
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116,943
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251,036
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320,355
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Selling, general and administrative expenses
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7,444
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7,254
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21,218
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21,936
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Income from operations
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91,979
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109,689
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229,818
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298,419
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Other income (expense)
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Interest expense-Westlake
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(5,947)
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(6,698)
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(17,391)
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(19,930)
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Other income, net
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224
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1,325
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2,245
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3,916
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Income before income taxes
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86,256
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104,316
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214,672
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282,405
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Provision for income taxes
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42
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216
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354
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633
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Net income
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86,214
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104,100
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214,318
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281,772
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Less: Net income attributable to noncontrolling interest in OpCo
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71,561
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85,964
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180,159
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234,376
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Net income attributable to Westlake Chemical Partners LP
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$
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14,653
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$
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18,136
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$
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34,159
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$
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47,396
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MLP distributable cash flow (1)
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$
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14,886
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$
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17,879
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$
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34,607
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$
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51,906
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EBITDA (2)
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$
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126,075
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$
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139,126
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$
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325,487
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$
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386,756
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____________
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(1) See "Reconciliation of MLP Distributable Cash Flow to Net Income and Net Cash Provided by Operating Activities" below.
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(2) See "Reconciliation of EBITDA to Net Income, Income from Operations and Net Cash Provided by Operating Activities" below.
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Three Months Ended September 30, 2025
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Nine Months Ended September 30, 2025
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Average
Sales Price
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Volume
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Average
Sales Price
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Volume
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Net sales percentage change from prior-year period due to average sales price and volume
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+12.0
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%
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-0.5
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%
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+10.1
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%
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-11.9
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%
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Three Months Ended September 30, 2025
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Nine Months Ended September 30, 2025
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Domestic US prices percentage change from prior-year period for fuel cost and feedstock
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Fuel cost (Natural Gas)
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+45.2
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%
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+60.6
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%
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Feedstock (Ethane)
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+47.4
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%
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+37.6
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%
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Reconciliation of MLP Distributable Cash Flow to Net Income and Net Cash Provided by Operating Activities
The following table presents reconciliations of MLP distributable cash flow to net income and net cash provided by operating activities, the most directly comparable GAAP financial measures, for each of the periods indicated.
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Three Months Ended September 30,
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Nine Months Ended September 30,
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2025
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2024
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2025
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2024
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(in thousands of dollars)
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Net cash provided by operating activities
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$
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105,238
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$
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126,071
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$
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160,090
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$
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352,532
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Loss from disposition of property, plant and equipment
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(1,788)
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(416)
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(2,279)
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(2,241)
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Changes in operating assets and liabilities and other
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(17,236)
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(21,555)
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56,507
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(68,519)
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Net income
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86,214
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104,100
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214,318
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281,772
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Add:
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Depreciation, amortization and disposition of property, plant and equipment
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35,660
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28,528
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95,703
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86,662
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Less:
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Contribution to turnaround reserves
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(10,486)
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(11,903)
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(28,504)
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(32,051)
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Maintenance capital expenditures
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(24,150)
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(17,753)
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(65,233)
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(34,808)
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Distributable cash flow attributable to noncontrolling interest in OpCo
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(72,352)
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(85,093)
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(181,677)
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(249,669)
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MLP distributable cash flow
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$
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14,886
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$
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17,879
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$
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34,607
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$
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51,906
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Reconciliation of EBITDA to Net Income, Income from Operations and Net Cash Provided by Operating Activities
The following table presents reconciliations of EBITDA to net income, income from operations and net cash provided by operating activities, the most directly comparable GAAP financial measures, for each of the periods indicated.
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Three Months Ended September 30,
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Nine Months Ended September 30,
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2025
|
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2024
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2025
|
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2024
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(in thousands of dollars)
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Net cash provided by operating activities
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$
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105,238
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$
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126,071
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|
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$
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160,090
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$
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352,532
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Loss from disposition of property, plant and equipment
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(1,788)
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(416)
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(2,279)
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|
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(2,241)
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|
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Changes in operating assets and liabilities and other
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(17,236)
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(21,555)
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56,507
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(68,519)
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Net income
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86,214
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104,100
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214,318
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|
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281,772
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Less:
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Other income, net
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224
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|
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1,325
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2,245
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|
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3,916
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Interest expense-Westlake
|
|
(5,947)
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(6,698)
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|
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(17,391)
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|
|
(19,930)
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Provision for income taxes
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(42)
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|
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(216)
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|
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(354)
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|
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(633)
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Income from operations
|
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91,979
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|
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109,689
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|
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229,818
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|
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298,419
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Add:
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Depreciation and amortization
|
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33,872
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|
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28,112
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|
|
93,424
|
|
|
84,421
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|
Other income, net
|
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224
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|
|
1,325
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|
|
2,245
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|
|
3,916
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|
|
EBITDA
|
|
$
|
126,075
|
|
|
$
|
139,126
|
|
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$
|
325,487
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|
|
$
|
386,756
|
|
Summary
For the quarter ended September 30, 2025, net income was $86.2 million on net sales of $308.9 million. This represents a decrease in net income of $17.9 million as compared to net income of $104.1 million on net sales of $277.0 million for the quarter ended September 30, 2024. Net income attributable to the Partnership for the third quarter of 2025 was $14.7 million as compared to $18.1 million for the third quarter of 2024, a decrease of $3.4 million. Income from operations was $92.0 million for the third quarter of 2025 as compared to $109.7 million for the third quarter of 2024, a decrease of $17.7 million. Net sales for the third quarter of 2025 increased by $31.9 millionas compared to the third quarter of 2024 primarily due to higher ethylene sales prices and sales volumes to Westlake, partially offset by lower ethylene and co-products sales prices and sales volumes to third parties. Income from operations, net income and net income attributable to the Partnership for the third quarter of 2025 as compared to the third quarter of 2024 were lower due to lower third-party sales prices and higher ethane feedstock and natural gas costs, partially offset by higher sales to Westlake in the third quarter of 2025 compared to the third quarter of 2024.
For the nine months ended September 30, 2025, net income was $214.3 millionon net sales of $843.6 million. This represents a decreasein net income of $67.5 millionas compared to net income of $281.8 millionon net sales of $845.8 millionfor the nine months ended September 30, 2024. Net income attributable to the Partnership for the nine months ended September 30, 2025was $34.2 millionas compared to $47.4 millionfor the nine months ended September 30, 2024, a decreaseof $13.2 million.Income from operations was $229.8 million for the nine months ended September 30, 2025 as compared to $298.4 million for the nine months ended September 30, 2024, a decrease of $68.6 million. Net sales for the nine months ended September 30, 2025 decreased by $2.2 million as compared to net sales for the nine months ended September 30, 2024, mainly due to lower ethylene and co-products sales volumes to Westlake and third parties as a result of lower production volumes attributable to the Petro 1 turnaround, partially offset by higher ethylene sales prices to Westlake and third parties as well as a buyer deficiency fee of $13.6 million recognized during the nine months ended September 30, 2025 as a result of a forecasted annual production deficiency due to the Petro 1 turnaround extending into April 2025, which was later than the planned completion in March 2025. Income from operations, net income and net income attributable to the Partnership for the nine months ended September 30, 2025 as compared to the nine months ended September 30, 2024 were lower primarily due to the lower sales volumes and higher ethane feedstock and natural gas costs during the nine months ended September 30, 2025 as compared to the nine months ended September 30, 2024.
RESULTS OF OPERATIONS
Third Quarter 2025 Compared with Third Quarter 2024
Net Sales.Net sales increased by $31.9 million, or 11.5%, to $308.9 million in the third quarter of 2025 from $277.0 million in the third quarter of 2024. The increase in net sales in the third quarter of 2025 as compared to the third quarter of 2024 was primarily due to higher ethylene sales prices and sales volumes to Westlake, partially offset by lower ethylene and co-products sales prices and sales volumes to third parties. Higher average sales prices in the third quarter of 2025 contributed to a 12.0% increase in net sales compared to the third quarter of 2024. Lower sales volumes in the third quarter of 2025 contributed to a 0.5% decrease in net sales compared to the third quarter of 2024.
Gross Profit.Gross profit decreased to $99.4 million in the third quarter of 2025 from $116.9 million in the third quarter of 2024. Gross profit margin in the third quarter of 2025 was 32.2%, as compared to 42.2% in the third quarter of 2024. The lower gross profit margin was primarily due to higher ethane feedstock and natural gas costs in the third quarter of 2025 compared to the third quarter of 2024.
Selling, General and Administrative Expenses.Selling, general and administrative expenses remained relatively consistent at $7.4 million in the third quarter of 2025 as compared to $7.3 million in the third quarter of 2024.
Interest Expense-Westlake.Interest expense of $5.9 million in the third quarter of 2025 decreased from $6.7 million in the third quarter of 2024 mainly due to lower interest rates on the outstanding debt in the third quarter of 2025 as compared to the third quarter of 2024.
Other Income, net. Other income, net decreased to $0.2 million in the third quarter of 2025 from $1.3 million in the third quarter of 2024, primarily due to a decrease in interest earned on investments with Westlake under the Investment Management Agreement due to a lower average amount of cash invested and lower interest rates in the third quarter of 2025 as compared to the third quarter of 2024.
MLP Distributable Cash Flow.MLP distributable cash flow decreased by $3.0 million to $14.9 million in the third quarter of 2025 from $17.9 million in the third quarter of 2024. The decrease in the third quarter of 2025, as compared to the prior-year period, was primarily attributable to decreased earnings at OpCo and higher maintenance capital expenditures.
EBITDA. EBITDA decreased by $13.0 million to $126.1 million in the third quarter of 2025 from $139.1 million in the third quarter of 2024. The decrease was primarily due to lower third-party sales prices and higher ethane feedstock and natural gas costs, partially offset by higher sales to Westlake in the third quarter of 2025 compared to the third quarter of 2024.
Nine Months Ended September 30, 2025 Compared with Nine Months Ended September 30, 2024
Net Sales. Net sales decreasedby $2.2 million, or 0.3%, to $843.6 millionin the nine months ended September 30, 2025from $845.8 millionin the nine months ended September 30, 2024. The decreasein net sales in the nine months ended September 30, 2025 was primarily due to lower ethylene and co-products sales volumes to Westlake and third parties as a result of lower production volumes attributable to the Petro 1 turnaround, partially offset by higher ethylene sales prices to Westlake and third parties as well as a buyer deficiency fee of $13.6 million recognized during the nine months ended September 30, 2025 as a result of a forecasted annual production deficiency due to the Petro 1 turnaround extending into April 2025, which was later than the planned completion in March 2025. The higher average sales prices in the nine months ended September 30, 2025 contributed to a 10.1% increase in net sales compared to the nine months ended September 30, 2024. The lower sales volumes in the nine months ended September 30, 2025 contributed to an 11.9% decrease in net sales as compared to the nine months ended September 30, 2024.
Gross Profit. Gross profit decreasedto $251.0 millionin the nine months ended September 30, 2025from $320.4 millionin the nine months ended September 30, 2024. Gross profit margin in the nine months ended September 30, 2025was 29.8%, as compared to 37.9%for the nine months ended September 30, 2024. The decrease in gross profit margin was primarily due to higher ethane feedstock and natural gas costs in the nine months ended September 30, 2025 as compared to the nine months ended September 30, 2024.
Selling, General and Administrative Expenses. Selling, general and administrative expenses decreasedby $0.7 million, or 3.2%, to $21.2 millionin the nine months ended September 30, 2025 as compared to $21.9 million in the nine months ended September 30, 2024. The decrease was mainly attributable to lower service costs in the nine months ended September 30, 2025 as compared to the nine months ended September 30, 2024.
Interest Expense-Westlake.Interest expense of $17.4 million in the nine months ended September 30, 2025 decreased by $2.5 million as compared to interest expense of $19.9 million in the nine months ended September 30, 2024. The decrease was primarily attributable to lower interest rates on the outstanding debt in the nine months ended September 30, 2025 as compared to the nine months ended September 30, 2024.
Other Income, net. Other income, net decreased by $1.7 million to $2.2 million in the nine months ended September 30, 2025 from $3.9 million in the nine months ended September 30, 2024, primarily due to a decrease in interest earned on investments with Westlake under the Investment Management Agreement due to a lower average amount of cash invested and lower interest rates in the nine months ended September 30, 2025 as compared to the nine months ended September 30, 2024.
MLP Distributable Cash Flow.MLP distributable cash flow decreased by $17.3 million to $34.6 million in the nine months ended September 30, 2025 from $51.9 million in the nine months ended September 30, 2024. The decrease in the nine months ended September 30, 2025, as compared to the prior-year period, was primarily attributable to lower ethylene and co-products sales volumes to Westlake and third parties as a result of lower production volumes attributable to the Petro 1 turnaround and higher maintenance capital expenditures due to the Petro 1 turnaround.
EBITDA. EBITDA decreased by $61.3 million to $325.5 million in the nine months ended September 30, 2025 from $386.8 million in the nine months ended September 30, 2024. The decrease was primarily due to higher ethane feedstock and natural gas costs and lower ethylene and co-products sales volumes to Westlake and third parties as a result of lower production volumes attributable to the Petro 1 turnaround. The decrease was partially offset by higher ethylene sales prices to Westlake and third parties as well as a buyer deficiency fee of $13.6 million recognized during the nine months ended September 30, 2025 as a result of a forecasted annual production deficiency due to the Petro 1 turnaround extending into April 2025, which was later than the planned completion in March 2025.
CASH FLOW DISCUSSION FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2025 AND 2024
Operating Activities
Operating activities provided cash of $160.1 million in the first nine months of 2025 compared to cash provided by operating activities of $352.5 million in the first nine months of 2024. The $192.4 million decrease in cash flows from operating activities was mainly due to cash used in connection with the Petro 1 turnaround, lower income from operations in the first nine months of 2025 as compared to the first nine months of 2024 and a decrease in cash provided by working capital. Changes in components of working capital, which we define for the purposes of this cash flow discussion as accounts receivable, net-Westlake, accounts receivable, net-third parties, inventories, prepaid expenses and other current assets less accounts payable-Westlake, accounts payable-third parties and accrued and other liabilities, used cash of $26.2 million in the first nine months of 2025 as compared to $1.2 million of cash provided in the first nine months of 2024, resulting in an overall unfavorable change of $27.4 million. The unfavorable change in working capital was mainly attributable to an unfavorable change in net accounts receivable-Westlake due to the buyer deficiency recognized in the first nine months of 2025 and lower receivables with Westlake outstanding as of the fourth quarter of 2024 due to sales of excess quantities of ethylene at a lower sales price. This unfavorable change was partially offset by favorable changes in accrued and other liabilities due to the impact of the Petro 1 turnaround activities and the timing of payments in the first nine months of 2025.
Investing Activities
Net cash provided by investing activities in the first nine months of 2025 was $50.0 million as compared to net cash used for investing activities of $50.5 million in the first nine months of 2024, resulting in an overall favorable change of $100.5 million in investing cash flows. During the first nine months of 2025, there were maturities of investments with Westlakeof $120.0 million under the Investment Management Agreement, whereas during the first nine months of 2024, there were investments with Westlake of $15.0 million and no maturities under theInvestment Management Agreement. Capital expenditures increased to $70.0 million in the first nine months of 2025 as compared to $35.5 million in the first nine months of 2024 due to the Petro 1 turnaround. Capital expenditures in the first nine months of 2025 and 2024 were primarily related to projects to increase production capacity or reduce costs, maintenance costs and safety and environmental projects at our facilities.
Financing Activities
Net cash used for financing activities in the first nine months of 2025 was $230.5 million as compared to net cash used for financing activities of $300.4 million in the first nine months of 2024. The cash outflows in the first nine months of 2025 were related to distributions of $180.6 million to the noncontrolling interest retained in OpCo by Westlake and of $49.8 million to unitholders by the Partnership.The cash outflows in the first nine months of 2024 were related to distributions of $250.6 million to the noncontrolling interest retained in OpCo by Westlake and of $49.8 million to unitholders by the Partnership.
LIQUIDITY AND CAPITAL RESOURCES
Liquidity and Financing Arrangements
Pursuant to the terms of the Equity Distribution Agreement, entered in October 2018 and amended in February 2020, among the Partnership and various investment banks, the Partnership may offer and sell the Partnership's common units from time to time to or through the investment banks, as the Partnership's sales agents or as principals, having an aggregate offering amount of up to $50.0 million (the "ATM Program"). The Partnership intends to use the net proceeds of sales of the common units, if any, for general partnership purposes, which may include the funding of potential drop-downs and other acquisitions. No common units had been issued under the ATM Program as of September 30, 2025.
Based on the terms of our cash distribution policy, we expect that we will distribute to our partners most of the excess cash generated by our operations. To the extent we do not generate sufficient cash flow to fund capital expenditures, we expect to fund them primarily from external sources, including borrowing directly from Westlake, as well as future issuances of equity interests or debt.
The Partnership maintains separate bank accounts, but Westlake continues to provide treasury services on our behalf under the Omnibus Agreement. Our sources of liquidity include cash generated from operations, the OpCo Revolver, the MLP Revolver and, if necessary and possible under then current market conditions, the issuance of additional equity interests or debt. We believe that cash generated from these sources will be sufficient to meet our short-term working capital requirements and long-term capital expenditure requirements and to make quarterly cash distributions. Westlake may also provide other direct and indirect financing to us from time to time, although it is not obligated to do so.
In order to fund non-annual turnaround expenditures, we cause OpCo to reserve an amount for turnaround costs during each twelve-month period designed to cover future turnaround activities. Each of OpCo's ethylene production facilities requires turnaround maintenance approximately every five years. By reserving additional cash annually, we intend to reduce the variability in OpCo's cash flow. Westlake's purchase price for its minimum commitment of ethylene under the Ethylene Sales Agreement includes a component (adjusted annually) designed to cover, over the long term, substantially all of OpCo's turnaround expenditures.
Our cash is generated from cash distributions from OpCo. OpCo is a restricted subsidiary under certain indentures governing Westlake's senior notes, and these restrictions limit OpCo's ability to, among other things, incur additional debt. Westlake's credit facility and various indentures do not prevent OpCo from making distributions to us.
We, OpCo and Westlake are parties to an Investment Management Agreement that authorizes Westlake to invest the Partnership's and OpCo's excess cash with Westlake for durations of up to a maximum of nine months. Per the terms of the Investment Management Agreement, cash invested with Westlake earns a market return plus five basis points and Westlake provides daily availability of the invested cash to meet any liquidity needs of the Partnership or OpCo.
On October 28, 2025, the board of directors of Westlake Chemical Partners GP LLC, our general partner, approved a quarterly distribution of $0.4714 per common unit payable on November 26, 2025 to unitholders of record as of November 10, 2025, which equates to a total amount of approximately $16.6 million per quarter, or approximately $66.5 million per year in aggregate, based on the number of common units outstanding on September 30, 2025. We do not have a legal or contractual obligation to pay distributions on a quarterly basis or any other basis at our minimum quarterly distribution rate or any other rate.
Capital Expenditures
Westlake has historically funded expansion capital expenditures related to Lake Charles Olefins and Calvert City Olefins. No such funding was required by OpCo during the nine months ended September 30, 2025 and 2024. Total capital expenditures for the nine months ended September 30, 2025 and 2024 were $70.0 million and $35.5 million, respectively. We expect that Westlake will loan additional cash to OpCo to fund its expansion capital expenditures in the future, but Westlake is under no obligation to do so.
Cash and Cash Equivalents
As of September 30, 2025, our cash and cash equivalents totaled $37.9 million. In addition, we have cash invested under the Investment Management Agreement (as described below) and a revolving credit facility with Westlake available to supplement cash if needed, as described under "Indebtedness" below.
In August 2017, the Partnership, OpCo and Westlake executed the Investment Management Agreement that authorizes Westlake to invest the Partnership's and OpCo's excess cash with Westlake for durations of up to a maximum of nine months. Per the terms of the Investment Management Agreement, the Partnership earns a market return plus five basis points and Westlake provides daily availability of the invested cash to meet any liquidity needs of the Partnership or OpCo. The Partnership had $13.4 million of cash invested under the Investment Management Agreement at September 30, 2025.
Indebtedness
OpCo Revolver
In connection with the IPO, OpCo entered into a $600.0 million revolving credit facility with an affiliate of Westlake, as amended in June 2017, September 2018 and July 2022 (the "OpCo Revolver") that may be used to fund growth projects and working capital needs. The OpCo Revolver is scheduled to mature on July 12, 2027. On July 12, 2022, OpCo entered into the Second Amendment (the "OpCo Revolver Amendment") to the OpCo Revolver. The OpCo Revolver Amendment, among other things, extended the maturity date to July 12, 2027 and provided for the replacement of the London Interbank Offered Rate ("LIBOR") with the Secured Overnight Financing Rate, as administered by the Federal Reserve Bank of New York ("SOFR"). Borrowings under the OpCo Revolver bear interest at a variable rate of either (a) SOFR plus the Applicable Margin plus a 0.10% credit spread adjustment or, if SOFR is no longer available, (b) the Alternate Base Rate plus the Applicable Margin minus 1.0%. The Applicable Margin under the OpCo Revolver is 1.75%. As of September 30, 2025, outstanding borrowings under the OpCo Revolver totaled $22.6 million and bore interest at SOFR plus the Applicable Margin and credit spread adjustment, which is accrued in arrears quarterly.
MLP Revolver
In 2015, we entered into a senior, unsecured revolving credit agreement with an affiliate of Westlake, as amended in August and November 2017, March 2020 and July 2022 (the "MLP Revolver"). The MLP Revolver has a borrowing capacity of $600.0 million and is scheduled to mature on July 12, 2027. On July 12, 2022, the Partnership entered into the Fourth Amendment (the "MLP Revolver Amendment") to the MLP Revolver. The MLP Revolver Amendment, among other things, extended the maturity date to July 12, 2027 and provided for the replacement of LIBOR with SOFR as the reference rate. Borrowings under the MLP Revolver bear interest at a variable rate of either (a) SOFR plus the Applicable Margin plus a 0.10% credit spread adjustment or, if SOFR is no longer available, (b) the Alternate Base Rate plus the Applicable Margin minus 1.0%. The Applicable Margin under the MLP Revolver varies between 1.75% and 2.75%, depending on the Partnership's Consolidated Leverage Ratio. The MLP Revolver provides that we may pay all or a portion of the interest on any borrowings in kind, in which case any such amounts would be added to the principal amount of the loan. The MLP Revolver requires that we maintain a consolidated leverage ratio of either (1) during any one-year period following certain types of acquisitions (including acquisitions of additional interests in OpCo), 5.50:1.00 or less, or (2) during any other period, 4.50:1.00 or less. The MLP Revolver also contains certain other customary covenants. The repayment of borrowings under the MLP Revolver is subject to acceleration upon the occurrence of an event of default. As of September 30, 2025, outstanding borrowings under the MLP Revolver totaled $377.1 million and bore interest at SOFR plus the Applicable Margin and credit spread adjustment, which is accrued in arrears quarterly. We intend to use the MLP Revolver to purchase additional limited partnership interests in OpCo in the future, in the event OpCo desires to sell such additional interests to us, for other acquisitions and for general partnership purposes.
Off-Balance Sheet Arrangements
None.
Recent Accounting Pronouncements
See Note 1 to the consolidated financial statements included in Item 1 of this Form 10-Q for a full description of recent accounting pronouncements, including expected date of adoption and estimated effect on results of operations and financial condition.
FORWARD-LOOKING STATEMENTS
Certain of the statements contained in this report are forward-looking statements. All statements, other than statements of historical facts, included in this report that address activities, events or developments that we expect, project, believe or anticipate will or may occur in the future are forward-looking statements. Forward-looking statements can be identified by the use of words such as "believes," "intends," "may," "should," "could," "anticipates," "expects," "will" or comparable terminology, or by discussions of strategies or trends. Although we believe that the expectations reflected in such forward-looking statements are reasonable, we cannot give any assurances that these expectations will prove to be correct. Forward-looking statements relate to matters such as:
•the amount of ethane that we are able to process, which could be adversely affected by, among other things, operating difficulties;
•the volume of ethylene that we are able to sell;
•the price at which we are able to sell ethylene;
•industry market outlook, including prices and margins in third-party ethylene and co-products sales;
•widespread outbreak of an illness or any other communicable disease, or any other public health crisis;
•the impact of ongoing supply chain constraints caused by the conflicts in the Middle East and between Russia and Ukraine;
•the parties to whom we will sell ethylene and on what basis;
•volumes of ethylene that Westlake may purchase, in addition to the minimum commitment under the Ethylene Sales Agreement;
•timing, funding and results of capital expenditures;
•our intended quarterly distributions and the manner of making such distributions;
•our ability to meet our liquidity needs;
•timing of and amount of capital expenditures;
•our At-the-Market program and the use of any net proceeds from any sales under that program;
•our and OpCo's ability to extend our credit agreements with Westlake;
•potential loans from Westlake to OpCo to fund OpCo's expansion capital expenditures in the future;
•expected mitigation of exposure to commodity price fluctuations;
•turnaround activities and the variability of OpCo's cash flow;
•receipt of any buyer deficiency fee and Shortfall under the Ethylene Sales Agreement;
•compliance with present and future environmental regulations and costs associated with environmentally related penalties, capital expenditures, remedial actions and proceedings, including any new laws, regulations or treaties that may come into force to limit or control carbon dioxide and other greenhouse gas emissions or to address other issues of climate change;
•our ability to receive indemnification from Westlake for environmental and other losses; and
•effects of pending legal proceedings.
We have based these statements on assumptions and analysis in light of our experience and perception of historical trends, current conditions, expected future developments and other factors we believe were appropriate in the circumstances when the statements were made. Forward-looking statements by their nature involve substantial risks and uncertainties that could significantly impact expected results, and actual future results could differ materially from those described in such statements. These statements are subject to a number of assumptions, risks and uncertainties, including those described under "Risk Factors" in the 2024 Form 10-K and the following:
•general economic and business conditions, including inflation, interest rates and possible recession;
•the cyclical nature of the chemical industry;
•the availability, cost and volatility of raw materials and energy;
•lower crude oil prices reducing the cost advantage of ethane-based ethylene producers;
•actions taken by Westlake, including the renewal or renegotiation of, or determinations made pursuant to, our contractual arrangements with Westlake;
•uncertainties associated with the United States and worldwide economies, including those due to political tensions and conflict in the Middle East and elsewhere, including the conflict between Russia and Ukraine;
•uncertainties associated with pandemic infectious diseases;
•uncertainties associated with climate change;
•the potential impact on demand for ethylene due to initiatives such as recycling and customers seeking alternatives to polymers;
•current and potential governmental regulatory actions in the United States and regulatory actions and political unrest in other countries, including environmental regulations;
•industry production capacity and operating rates;
•the supply/demand balance for our products;
•competitive products and pricing pressures;
•instability in the credit and financial markets;
•access to capital markets;
•terrorist acts;
•operating interruptions (including leaks, explosions, fires, weather-related incidents, mechanical failure, unscheduled downtime, delays in turnaround activities, labor difficulties, transportation interruptions, spills and releases and other environmental risks);
•changes in laws or regulations;
•the effects of government shutdowns;
•technological developments;
•information systems failures and cyberattacks;
•our ability to implement our business strategies; and
•creditworthiness of our customers.
Many of these factors are beyond our ability to control or predict. Any of the factors, or a combination of these factors, could materially affect our future results of operations and the ultimate accuracy of the forward-looking statements. These forward-looking statements are not guarantees of our future performance, and our actual results and future developments may differ materially from those projected in the forward-looking statements. Management cautions against putting undue reliance on forward-looking statements or projecting any future results based on such statements or present or prior earnings levels. Every forward-looking statement speaks only as of the date of the particular statement, and we undertake no obligation to publicly update or revise any forward-looking statements.