WESTLAKE CORP

Previous wording

During 2022 and continuing through the end of 2023, our European businesses have been impacted by higher energy prices, inflation and reduced demand. Our North American businesses, where we derive a significant portion of our revenue, have also experienced the impacts of high energy costs and interest rates and slower demand for most of our products since the second half of 2022. However, in recent months we have experienced lower energy costs as prices for electricity and natural gas have declined following the elevated 2022 levels and inflation appears to be easing. In the near term, we expect that the volatility in energy prices, higher interest rates, inflation and other macroeconomic conditions will continue to impact margins and demand for most of our products.

Current wording

Since 2022, our European businesses have been impacted by higher energy prices, inflation and reduced demand. Our North American businesses, where we derive a significant portion of our revenue, have also experienced the impacts of high energy costs and interest rates and slower demand for most of our products since the second half of 2022. However, since the second half of 2023, we have experienced lower energy costs in Europe and North America as prices for electricity and natural gas have declined following the elevated 2022 levels and inflation has eased since the 2022 levels, although it still remains a concern. In the near term, we expect that the volatility in energy prices, higher interest rates, inflation and other macroeconomic conditions will continue to impact margins and demand for most of our products.

Previous wording

Our performance and essential materials such as ethylene, PVC, polyethylene, epoxy and caustic soda are some of the most widely used materials in the world and are upgraded into a wide variety of higher value-added products used in many end-markets. Westlake is the second-largest chlor-alkali producer and the second-largest PVC producer in the world, which makes Westlake a leading global chlorovinyls producer. Our performance and essential materials are used by customers in food and specialty packaging; industrial and consumer packaging; medical health applications; PVC pipe applications; consumer durables; mobility and transportation; renewable wind energy; coatings; and housing and construction products. Chlor-alkali and petrochemicals are typically manufactured globally in large volume by a number of different producers using widely available technologies. The chlor-alkali and petrochemical industries exhibit cyclical commodity characteristics, and margins are influenced by changes in the balance between supply and demand and the resulting operating rates, the level of general economic activity and the price of raw materials. Due to the significant size of new plants, capacity additions are built in large increments and typically require several years of demand growth to be absorbed. The cycle is generally characterized by periods of tight supply, leading to high operating rates and margins, followed by a decline in operating rates and margins primarily as a result of excess new capacity additions. Westlake is one of the leading producers of epoxy specialty resins, modifiers and curing agents in Europe, the United States and Asia, with a global reach to our end markets. Epoxy resins are the fundamental component of many types of materials and are often used in the automotive, construction, wind energy, aerospace and electronics industries due to their superior adhesion, strength and durability. We are also a leading supplier of Liquid and Solid Epoxy Resin. These base epoxies are used in a wide variety of industrial coatings applications.

Current wording

Our performance and essential materials such as ethylene, PVC, polyethylene, epoxy and caustic soda are some of the most widely used materials in the world and are upgraded into a wide variety of higher value-added products used in many end-markets. Westlake is the second-largest chlor-alkali producer and the second-largest PVC producer in the world, which makes Westlake a leading global chlorovinyls producer. Our performance and essential materials are used by customers in PVC pipe applications; housing and construction products; food and specialty packaging; industrial and consumer packaging; renewable wind energy; coatings; consumer durables; medical health applications; and mobility and transportation. Chlor-alkali and petrochemicals are typically manufactured globally in large volume by a number of different producers using widely available technologies. The chlor-alkali and petrochemical industries exhibit cyclical commodity characteristics, and margins are influenced by changes in the balance between global supply and demand and the resulting operating rates, the level of general economic activity and the price of raw materials. Due to the significant size of new plants, capacity additions are built in large increments and typically require several years of demand growth to be absorbed. The cycle is generally characterized by periods of tight supply, leading to high operating rates and margins, followed by a decline in operating rates and margins primarily as a result of excess new capacity additions. Westlake is a leading supplier of liquid and solid epoxy resins that are used in a wide variety of industrial coating applications. We are also one of the leading producers of epoxy specialty resins, modifiers and curing agents in Europe, the United States and Asia with a global reach to our end markets. Epoxy resins are the fundamental component of many types of materials and are often used in the automotive, construction, wind energy, aerospace and electronics industries due to their superior adhesion, strength and durability.

Previous wording

Global demand for most of our products started to recover from the effects of the COVID-19 pandemic in the second half of 2020 and remained strong through the first half of 2022. However, since the second half of 2022 and continuing through the end of 2023, we saw significant volatility in natural gas and electricity prices, particularly in Europe, as well as in ethane and ethylene prices. We have also experienced lower prices and reduced demand for most of our products globally. The ongoing conflict between Russia and Ukraine since Russia's invasion of Ukraine in 2022, conflict in the Middle East, slow economic growth in China, increase in bisphenol-A, epichlorohydrin and base epoxy resin exports out of Asia into European and North American markets, timing of certain new ethylene and polyethylene capacity additions in North America, Asia, and the Middle East, volatility in natural gas and electricity prices, volatility in crude oil prices and inflationary pressures could have a continuing negative impact on the performance of Performance and Essential Materials businesses.

Current wording

Global demand for most of our products started to recover from the effects of the COVID-19 pandemic in the second half of 2020 and remained strong through the first half of 2022. However, since the second half of 2022 and during the early part of 2023, we saw significant volatility in natural gas and electricity costs, particularly in Europe, as well as in ethane and ethylene prices. We have experienced a decline in natural gas and electricity costs since the second half of 2023 through the third quarter of 2024 and seasonal price increase in the fourth quarter of 2024. Since the first half of 2022, we have continued to experience lower prices and weak demand for most of our products globally. The ongoing conflict between Russia and Ukraine since Russia's invasion of Ukraine in 2022, the conflict in the Middle East, slow economic growth in China, increase in bisphenol-A, epichlorohydrin and base epoxy resin exports out of Asia into European and North American markets, disruption of trade flows due to enactment of duties and tariffs, timing of certain new ethylene and polyethylene capacity additions in North America, Asia, and the Middle East, volatility in natural gas and electricity prices and volatility in crude oil prices could have a continuing negative impact on the performance of Performance and Essential Materials businesses.

Previous wording

Our Housing and Infrastructure Products segment is primarily comprised of building products, PVC pipes and fittings and PVC compound products. Our sales are affected by the individual decisions of distributors and dealers on the levels of inventory they carry, their views on product demand, their financial condition and the manner in which they choose to manage inventory risk. A significant portion of our performance in this segment is driven by the activities in the residential construction and repair and remodeling markets in North America, which began to decline at the end of the second quarter of 2022 primarily due to the negative effect that rising mortgage rates in the United States had on buyer sentiment. Performance of our housing and infrastructure products businesses over time are generally reflective of the trends of building permits and housing starts in the New Residential Construction Survey by the U.S. Census Bureau and the Repair and Remodeling Index (RRI) provided by the National Association of Home Builders (the "NAHB") among others. Although we ultimately expect that the Infrastructure Investment and Jobs Act of 2021 and historically low residential housing construction may have a favorable long-term impact on certain industries related to our Housing and Infrastructure Products segment, the current inflationary environment impacting consumer spending and priorities, the possibility of recession or financial market instability, rapidly rising interest rates, decade high mortgage interest rates impacting consumer affordability, and ongoing labor and supply chain constraints are expected to have an unfavorable impact on the demand for housing construction in the near term and, as a result, our products produced by this segment. The lower demand for new housing construction as a result of the factors discussed above, however, could encourage homeowners to remodel and repair existing homes, which could have a favorable impact on our product sales

Current wording

Our Housing and Infrastructure Products segment is primarily comprised of residential building products, PVC pipes and fittings and PVC compound products. Our sales are affected by new home constructions and home repair and remodeling as well as the decisions of distributors and dealers on the levels of inventory they carry, their views on product demand, their financial condition and the manner in which they choose to manage inventory risk. A significant portion of our performance in this segment is driven by the activities in the residential construction and repair and remodeling markets in North America, which began to decline at the end of the second quarter of 2022 primarily due to the negative effect that rising mortgage rates in the United States had on buyer sentiment. Since the beginning of 2024, with the stabilization of interest rates and the possibility of further interest rate cuts by the U.S. Federal Reserve in the near term, we have seen improvement in the demand for housing products. Performance of our housing and infrastructure products businesses over time are generally reflective of the trends of building permits and housing starts in the New Residential Construction Survey by the U.S. Census Bureau and the Repair and Remodeling Index (RRI) provided by the National Association of Home Builders (the "NAHB") among others. Although we ultimately expect that the Infrastructure Investment and Jobs Act of 2021 and historically low residential housing construction that has resulted in an undersupply of existing housing may have a favorable long-term impact on our Housing and Infrastructure Products segment, the current inflationary environment impacting consumer spending and priorities and decade-high mortgage interest rates impacting consumer affordability are expected to have an unfavorable impact on the demand for housing construction in the near term and, as a result, our products produced by this segment.

Previous wording

North American PVC facilities within the Performance and Essential Materials segment supply most of the PVC required for our building products and PVC pipes and fittings plants. Our raw materials for stone, roofing and accessories, windows, shutters and specialty tool products are externally purchased. PVC required for the PVC compounds plants is either internally sourced from our North American and Asian facilities within the Performance and Essential Materials segment or externally purchased based on the location of the plants. The remaining feedstocks required, including pigments, fillers, stabilizers and other ingredients, are purchased under short-term contracts based on prevailing market prices.

Current wording

North American PVC facilities within the Performance and Essential Materials segment supply most of the PVC required for our building products and PVC pipes and fittings plants. Our raw materials for stone, roofing and accessories, windows, shutters and specialty tool products are externally purchased. PVC required for the PVC compounds plants is either internally sourced from our North American, European and Asian facilities within the Performance and Essential Materials segment or externally purchased based on the location of the plants. The remaining feedstocks required, including pigments, fillers, stabilizers and other ingredients, are purchased under short-term contracts based on prevailing market prices.

Previous wording

Factors that have caused volatility in our raw material prices, energy costs and production processes in the past, and which may do so in the future, include significant fluctuation in prices of these raw materials in response to, among other things, variable worldwide supply and demand across different industries, speculation in commodities futures, general economic, business or environmental conditions, labor costs, competition, import duties, tariffs, worldwide currency fluctuations, freight, inflationary pressures, regulatory costs, and product and process evolutions that impact demand for the same materials. Increasing raw material prices directly impact our cost of sales and our ability to maintain margins depends on implementing price increases in response to increasing raw material costs. The market for our products may or may not accept price increases, and as such, our future financial condition, results of operations or cash flows could be materially impacted.

Current wording

Factors that have caused volatility in our raw material prices, energy costs and production processes in the past, and which may do so in the future, include significant fluctuation in prices of these raw materials in response to, among other things, variable worldwide supply and demand across different industries, speculation in commodities futures, general economic, business or environmental conditions, labor costs, competition, import duties impacting our cross-border trades within North America, tariffs, worldwide currency fluctuations, freight, inflationary pressures, regulatory costs, and product and process evolutions that impact demand for the same materials. Increasing raw material prices directly impact our cost of sales and our ability to maintain margins depends on implementing price increases in response to increasing raw material costs. The market for our products may or may not accept price increases, and as such, our future financial condition, results of operations or cash flows could be materially impacted.

Previous wording

The table below and descriptions that follow represent the consolidated results of operations of the Company for the years ended December 31, 2023, 2022 and 2021.

Current wording

The table below and descriptions that follow represent the consolidated results of operations of the Company for the years ended December 31, 2024,2023 and 2022.

Previous wording

The table below presents net external sales on a disaggregated basis for our two principal operating segments. Performance Materials net external sales primarily consist of sales of PVC, polyethylene and epoxy. Essential Materials net external sales primarily consist of sales of caustic soda, styrene, and related derivative materials. Housing Products net external sales primarily consist of sales of housing exterior and interior products, residential pipes and fittings and residential PVC compounds. Infrastructure Products net external sales primarily consist of sales of non-residential pipes and fittings and non-residential PVC compounds.

Current wording

The table below presents net external sales on a disaggregated basis for our two principal operating segments. Performance Materials net external sales primarily consist of sales of PVC, polyethylene and epoxy. Essential Materials net external sales primarily consist of sales of caustic soda, chlorine, styrene, and related derivative materials. Housing Products net external sales primarily consist of sales of housing exterior and interior products, residential pipes and fittings and residential products utilizing PVC compounds. Infrastructure Products net external sales primarily consist of sales of infrastructure related pipes and fittings and infrastructure products utilizing PVC compounds.

Previous wording

Gross Profit. Gross profit margin percentage was 26% in 2022 as compared to 30% in 2021. The decline in gross margin percentage for the year ended December 31, 2022 as compared to the year ended December 31, 2021 was primarily due to higher natural gas, power, feedstock and raw material costs and lower polyethylene sales prices. These decreases versus the prior year were partially offset by higher sales prices for caustic soda, chlorine, derivative products, pipes and fittings and PVC compounds.

Current wording

Gross Profit. Gross profit margin percentage was 16% in 2024 as compared to 18% in 2023. The decline in gross margin percentage for the year ended December 31, 2024 as compared to the year ended December 31, 2023 was primarily due to lower prices for most of our products across both segments, which was partially offset by lower natural gas and feedstock costs. The 2023 gross profit margin was impacted by the litigation charge of $150 million, as discussed above.

Previous wording

Selling, General and Administrative Expenses. Selling, general and administrative expenses increased by $284 million to $835 million in 2022 from $551 million in 2021. This increase was mainly due to the inclusion of expenses related to the businesses acquired in the second half of 2021 and in the first quarter of 2022 as well as higher employee-related costs.

Current wording

Selling, General and Administrative Expenses. Selling, general and administrative expenses increased by $9 million to $874 million in 2024 from $865 million in 2023. This increase was mainly due to higher professional consulting, selling and technology related expenses, which was partially offset by lower employee benefit costs.

Previous wording

Other Income, Net. Other income, net of $73 million in 2022 was higher than other income, net of $53 million in 2021, primarily due to higher interest income.

Current wording

Other Income, Net. Other income, net of $222 million in 2024 was higher than other income, net of $136 million in 2023, substantially due to a higher average cash and cash equivalents balance and higher interest rates in 2024, as compared to 2023, resulting in higher interest income.

Previous wording

Operating activities provided cash of $3,395 million in 2022 as compared to cash provided by operating activities of $2,394 million in 2021. The $1,001 million increase in cash flows from operating activities was mainly due to the increase in income from operations, which was partially offset by working capital changes and an unfavorable change related to the turnaround at OpCo's Petro 2 facility and other turnaround activities. Changes in components of working capital, which we define for purposes of this cash flow discussion as accounts receivable, inventories, prepaid expenses and other current assets, less accounts payable and accrued and other liabilities, provided cash of $174 million in 2022, as compared to $383 million of cash used in 2021, a favorable change of $557 million. The majority of the unfavorable changes in 2021 were driven by higher accounts receivable and higher inventories, partially offset by higher accounts payable and accrued and other liabilities. The unfavorable change in accounts receivable was primarily driven by higher sales prices resulting in higher trade customer balances. The higher inventories, accounts payable and accrued and other liabilities in 2022 were primarily driven by higher inventory cost and an increase in operating activities, as compared to 2021.

Current wording

Operating activities provided cash of $1,314 million in 2024 as compared to cash provided by operating activities of $2,336 million in 2023. The $1,022 million decrease in cash flow from operating activities was mainly due to unfavorable changes in working capital and lower prices for most of our products resulting in lower operating income. Changes in components of working capital, which we define for purposes of this cash flow discussion as accounts receivable, inventories, prepaid expenses and other current assets, less accounts payable and accrued and other liabilities, used cash of $278 million in 2024, as compared to $600 million of cash provided in 2023, an unfavorable change of $878 million. The unfavorable changes in 2024 were substantially driven by the higher inventory at the end of 2024, as compared to 2023 and cash outflows in 2024 related to the 2023 litigation accrual.

Previous wording

Operating activities provided cash of $2,336 million in 2023 as compared to cash provided by operating activities of $3,395 million in 2022. The $1,059 million decrease in cash flow from operating activities was mainly due to lower prices and demand for most of our products, partially offset by favorable changes in working capital. Changes in components of working capital, which we define for purposes of this cash flow discussion as accounts receivable, inventories, prepaid expenses and other current assets, less accounts payable and accrued and other liabilities, provided cash of $600 million in 2023, as compared to $174 million of cash provided in 2022, a favorable change of $426 million. The favorable changes in 2023 were substantially due to lower inventory costs driven by lower feedstock and fuel costs, as compared to 2022.

Current wording

Operating activities provided cash of $2,336 million in 2023 as compared to cash provided by operating activities of $3,395 million in 2022. The $1,059 million decrease in cash flows from operating activities was mainly due to lower prices and demand for most of our products, partially offset by favorable changes in working capital. Changes in components of working capital, which we define for purposes of this cash flow discussion as accounts receivable, inventories, prepaid expenses and other current assets, less accounts payable and accrued and other liabilities, provided cash of $600 million in 2023, as compared to $174 million of cash provided in 2022, a favorable change of $426 million. The favorable changes in 2023 were substantially due to lower inventory costs driven by lower feedstock and fuel costs, as compared to 2022.

Previous wording

Net cash used for investing activities during 2022 was $2,479 million as compared to net cash used of $3,213 million in 2021. Investing activities during 2022 were comprised primarily of the acquisition of Westlake Epoxy in February 2022 for $1,163 million, the purchase of an additional 3.2% interest in LACC for $89 million, aggregate contributions of $87 million to LACC, capital expenditures, and other asset acquisitions. Our 2021 acquisition related activities were higher, as compared to 2022, due to the acquisitions of the Boral Target Companies, LASCO and Dimex for $2,554 million in the aggregate. Capital expenditures were $1,108 million in 2022 compared to $658 million in 2021. Capital expenditures in 2022 and 2021 were primarily related to expansion projects at various chlor-alkali plants as well as projects to improve production capacity or reduce costs, maintenance and safety projects and environmental projects at our various facilities.

Current wording

Net cash used for investing activities during 2024 was $1,001 million as compared to net cash used of $1,037 million in 2023. The decrease in investing activities during 2024 was primarily because of the lower capital expenditures in 2024 as compared to 2023. Capital expenditures were $1,008 million during 2024 as compared to $1,034 million during 2023. Capital expenditures in 2024 were primarily related to projects to increase production capacity or reduce costs, maintenance and safety projects and environmental projects at our various facilities.

Previous wording

Net cash used by financing activities during 2023 was $245 million as compared to net cash used by financing activities of $587 million in 2022. The decrease in cash used for financing activities during 2023 as compared to 2022 was primarily due to the redemption of $250 million aggregate principal amount of the 3.60% Senior Notes due 2022 and higher repurchases of our common stock in 2022 as compared to 2023. The financing activities during 2023 were primarily related to the $221 million payment of cash dividends, the $54 million payment of cash distributions to noncontrolling interests, repurchases of shares of our common stock for an aggregate purchase price of $23 million and inflows of $44 million from the exercise of stock options. The financing activities during 2022 were primarily related to the redemption of $250 million aggregate principal amount of the 3.60% 2022 Senior Notes, $169 million payment of cash dividends, the $60 million payment of cash distributions to noncontrolling interests and repurchases of shares of our common stock for an aggregate purchase price of $101 million.

Current wording

Net cash used by financing activities during 2023 was $245 million as compared to net cash used of $587 million in 2022. The financing activities during 2023 were primarily related to the $221 million payment of cash dividends, the $54 million payment of cash distributions to noncontrolling interests, repurchases of shares of our common stock for an aggregate purchase price of $23 million and inflows of $44 million from the exercise of stock options. Financing activities during 2022 were primarily related to the redemption of $250 million aggregate principal amount of the 3.60% 2022 Senior Notes, the $169 million payment of cash dividends, the $60 million payment of cash distributions to noncontrolling interests and repurchases of our common stock for an aggregate purchase price of $101 million.

Previous wording

In November 2014, our Board of Directors authorized a $250 million stock repurchase program (the "2014 Program"). In November 2015, our Board of Directors approved the expansion of the 2014 Program by an additional $150 million. In August 2018, our Board of Directors approved the further expansion of the existing 2014 Program by an additional $150 million. In August 2022, our Board of Directors approved the further expansion of the existing 2014 Program by an additional $500 million. As of December 31, 2023, we had repurchased 8,722,550 shares of our common stock for an aggregate purchase price of approximately $574 million under the 2014 Program. During the year ended December 31, 2023, 211,294 shares of our common stock were repurchased for an aggregate purchase price of $23 million under the 2014 Program. Purchases under the 2014 Program may be made either through the open market or in privately negotiated transactions. Decisions regarding the amount and the timing of purchases under the 2014 Program will be influenced by our cash on hand, our cash flows from operations, general market conditions and other factors. The 2014 Program may be discontinued by our Board of Directors at any time.

Current wording

In November 2014, our Board of Directors authorized a $250 million stock repurchase program (the "2014 Program"). In November 2015, our Board of Directors approved the expansion of the 2014 Program by an additional $150 million. In August 2018, our Board of Directors approved the further expansion of the existing 2014 Program by an additional $150 million. In August 2022, our Board of Directors approved the further expansion of the existing 2014 Program by an additional $500 million. During the year ended December 31, 2024, 480,081 shares of our common stock were repurchased for an aggregate purchase price of $60 million under the 2014 Program. As of December 31, 2024, we had repurchased 9,202,631 shares of our common stock for an aggregate purchase price of approximately $634 million under the 2014 Program. Purchases under the 2014 Program may be made either through the open market or in privately negotiated transactions. Decisions regarding the amount and the timing of purchases under the 2014 Program will be influenced by our cash on hand, our cash flows from operations, general market conditions and other factors. The 2014 Program may be discontinued by our Board of Directors at any time.

Previous wording

On October 4, 2018, Westlake Chemical Partners LP ("Westlake Partners") and Westlake Chemical Partners GP LLC, the general partner of Westlake Partners, entered into an Equity Distribution Agreement with UBS Securities LLC, Barclays Capital Inc., Citigroup Global Markets Inc., Deutsche Bank Securities Inc., RBC Capital Markets, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and Wells Fargo Securities, LLC to offer and sell Westlake Partners common units, from time to time, up to an aggregate offering amount of $50 million. This Equity Distribution Agreement was amended on February 28, 2020 to reference a new shelf registration and subsequent renewals thereof for utilization under this agreement. No common units were issued under this program in 2023, 2022 or 2021.

Current wording

On October 4, 2018, Westlake Chemical Partners LP ("Westlake Partners") and Westlake Chemical Partners GP LLC, the general partner of Westlake Partners, entered into an Equity Distribution Agreement with UBS Securities LLC, Barclays Capital Inc., Citigroup Global Markets Inc., Deutsche Bank Securities Inc., RBC Capital Markets, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and Wells Fargo Securities, LLC to offer and sell Westlake Partners common units, from time to time, up to an aggregate offering amount of $50 million. This Equity Distribution Agreement was amended on February 28, 2020 to reference a new shelf registration and subsequent renewals thereof for utilization under this agreement. No common units have been issued under this program in 2024, 2023 or 2022.

Previous wording

We believe that our sources of liquidity as described above are adequate to fund our normal operations and ongoing capital expenditures and turnaround activities. Funding of any potential large expansions such as our recent acquisitions or potential future acquisitions or the redemption of debt may likely necessitate, and therefore depend on our ability to obtain, additional financing in the future. We may not be able to access additional liquidity at favorable interest rates due to volatility of the commercial credit markets.

Current wording

We believe that our sources of liquidity as described above are adequate to fund our normal operations and ongoing capital expenditures and turnaround activities. We commenced the next planned maintenance turnaround at our Petro 1 ethylene facility in the first quarter of 2025. Funding of any potential large expansions such as our recent acquisitions or potential future acquisitions or the redemption of debt may likely necessitate, and therefore depend on our ability to obtain, additional financing in the future. We may not be able to access additional liquidity at favorable interest rates due to volatility of the commercial credit markets.

Previous wording

As of December 31, 2023, our cash and cash equivalents totaled $3,304 million.

Current wording

As of December 31, 2024, our cash and cash equivalents totaled $2,919 million.

Previous wording

As of December 31, 2023, the carrying value of our indebtedness totaled $4,906 million. See Note 11 to the consolidated financial statements appearing elsewhere in this Form 10-K for a discussion of our long-term indebtedness. Defined terms used in this section have the definitions assigned to such terms in Note 11 to the consolidated financial statements included in Item 8 of this Form 10-K.

Current wording

As of December 31, 2024, the carrying value of our indebtedness totaled $4,562 million. See Note 10 to the consolidated financial statements appearing elsewhere in this Form 10-K for a discussion of our long-term indebtedness. Defined terms used in this section have the definitions assigned to such terms in Note 10 to the consolidated financial statements included in Item 8 of this Form 10-K.

Previous wording

(6) The waste disposal revenue bonds expire in December 2027 and are subject to redemption and mandatory tender for purchase prior to maturity under certain conditions. Interest on the waste disposal revenue bonds accrues at a rate determined by a remarketing agent and is payable quarterly. The interest rate on the waste disposal revenue bonds at December 31, 2023 was 4.30%.

Current wording

(6) The waste disposal revenue bonds expire in December 2027 and are subject to redemption and mandatory tender for purchase prior to maturity under certain conditions. Interest on the waste disposal revenue bonds accrues at a rate determined by a remarketing agent and is payable quarterly. The interest rate on the waste disposal revenue bonds at December 31, 2024 was 3.35%.

Previous wording

(7) The 2026 Term Loan has a 5-year maturity and includes a government rate subsidy. The interest rate on the 2026 Term Loan as of December 31, 2023 was 0.95%.

Current wording

(7) The 2026 Term Loan has a 5-year maturity and includes a government rate subsidy. The interest rate on the 2026 Term Loan as of December 31, 2024 was 1.08%.

Previous wording

The holders of the 0.875% 2024 Senior Notes, the 3.60% 2026 Senior Notes, the 1.625% 2029 Senior Notes, the 3.375% 2030 Senior Notes, the 3.50% 2032 tax-exempt GO Zone Refunding Senior Notes, the 2.875% 2041 Senior Notes, the 5.00% 2046 Senior Notes, the 4.375% 2047 Senior Notes, the 3.125% 2051 Senior Notes and the 3.375% 2061 Senior Notes may require us to repurchase the notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest to, but not including, the date of repurchase, upon the occurrence of both a "change of control" and, within 60 days of such change of control, a "below investment grade rating event" (as such terms are defined in the respective indentures governing these notes).

Current wording

The holders of the 3.60% 2026 Senior Notes, the 1.625% 2029 Senior Notes, the 3.375% 2030 Senior Notes, the 3.50% 2032 tax-exempt GO Zone Refunding Senior Notes, the 2.875% 2041 Senior Notes, the 5.00% 2046 Senior Notes, the 4.375% 2047 Senior Notes, the 3.125% 2051 Senior Notes and the 3.375% 2061 Senior Notes may require us to repurchase the notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest to, but not including, the date of repurchase, upon the occurrence of both a "change of control" and, within 60 days of such change of control, a "below investment grade rating event" (as such terms are defined in the respective indentures governing these notes).

Previous wording

The indenture governing the 0.875% 2024 Senior Notes, the 3.60% 2026 Senior Notes, the 1.625% 2029 Senior Notes, the 3.375% 2030 Senior Notes, the 3.50% 2032 tax-exempt GO Zone Refunding Senior Notes, the 2.875% 2041 Senior Notes, the 5.00% 2046 Senior Notes, the 4.375% 2047 Senior Notes, the 3.125% 2051 Senior Notes, and the 3.375% 2061 Senior Notes contains customary events of default and covenants that, among other things and subject to certain exceptions, restrict us and certain of our subsidiaries' ability to (1) incur certain secured indebtedness, (2) engage in certain sale and leaseback transactions and (3) consolidate, merge or transfer all or substantially all of our assets.

Current wording

The indenture governing the 3.60% 2026 Senior Notes, the 1.625% 2029 Senior Notes, the 3.375% 2030 Senior Notes, the 3.50% 2032 tax-exempt GO Zone Refunding Senior Notes, the 2.875% 2041 Senior Notes, the 5.00% 2046 Senior Notes, the 4.375% 2047 Senior Notes, the 3.125% 2051 Senior Notes, and the 3.375% 2061 Senior Notes contains customary events of default and covenants that, among other things and subject to certain exceptions, restrict us and certain of our subsidiaries' ability to (1) incur certain secured indebtedness, (2) engage in certain sale and leaseback transactions and (3) consolidate, merge or transfer all or substantially all of our assets.

Previous wording

Debt Obligations and Interest Payments. As of December 31, 2023, we had $300 million debt obligations due within the near term, and debt obligations of $4,697 million due over the long-term period. At December 31, 2023, long-term debt related interest expense of $158 million was due within the near term, and related interest expense of $2,692 million was due over the long-term period. Maturities of our debt consist of $300 million in 2024, $763 million in 2026 and $11 million in 2027. There are no other scheduled maturities of debt in 2024 through 2028. See Note 11, "Long-Term Debt," in the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further information on our debt obligations and the expected timing of future principal and interest payments.

Current wording

Debt Obligations and Interest Payments. As of December 31, 2024, we had $6 million debt obligations due within the near term, and debt obligations of $4,639 million due over the long-term period. At December 31, 2024, long-term debt related interest expense of $156 million was due within the near term, and related interest expense of $2,543 million was due over the long-term period. Maturities of our debt consist of $6 million in 2025, $751 million in 2026, $11 million in 2027 and $727 million in 2029. There are no other scheduled maturities of debt in 2025 through 2029. See Note 10, "Long-Term Debt," in the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further information on our debt obligations and the expected timing of future principal and interest payments.

Previous wording

Operating leases. As of December 31, 2023, there was $142 million in operating lease obligations due within the near term, and $768 million due over the long-term period. See Note 7, "Leases," in the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further detail of our obligations and the timing of expected future payments.

Current wording

Operating Leases. As of December 31, 2024, there was $158 million in operating lease obligations due within the near term, and $881 million due over the long-term period. See Note 6, "Leases," in the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further detail of our obligations and the timing of expected future payments.

Previous wording

Pension Benefits Funding and Post-retirement Healthcare Benefits. Pension benefits funding obligations due within the near term were $8 million while post-retirement healthcare benefit payment obligations due within the near term were $8 million as of December 31, 2023. As of December 31, 2023, we had $135 million and $64 million of pension benefit funding and post-retirement healthcare benefit obligations due over the long-term period, respectively. The estimate of the timing of future payments under our defined benefit pension plans which cover certain eligible employees in the United States and non-U.S. countries and our post-retirement healthcare benefits to the employees of certain subsidiaries who meet certain minimum age and service requirements involves the use of certain assumptions, including retirement ages and payout periods. See Note 14, "Employee Benefits," in the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further information on our obligations and the timing of expected future payments.

Current wording

Pension Benefits Funding and Post-retirement Healthcare Benefits. Pension benefits funding obligations due within the near term were $10 million while post-retirement healthcare benefit payment obligations due within the near term were $7 million as of December 31, 2024. As of December 31, 2024, we had $125 million and $49 million of pension benefit funding and post-retirement healthcare benefit obligations due over the long-term period, respectively. The estimate of the timing of future payments under our defined benefit pension plans which cover certain eligible employees in the United States and non-U.S. countries and our post-retirement healthcare benefits to the employees of certain subsidiaries who meet certain minimum age and service requirements involves the use of certain assumptions, including retirement ages and payout periods. See Note 13, "Employee Benefits," in the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further information on our obligations and the timing of expected future payments.

Previous wording

Purchase Obligations. Purchase obligations include agreements to purchase goods and services that are enforceable and legally binding and that specify all significant terms, including a minimum quantity and price. We are party to various obligations to purchase goods and services, including commitments to purchase various feedstock, utilities, nitrogen, oxygen, product storage, pipeline usage and logistic support, in each case in the ordinary course of our business, as well as various purchase commitments for our capital projects. As of December 31, 2023, we had $2,152 million of enforceable and legally binding purchase commitments due within the near term, and $5,976 million due over the long-term period.

Current wording

Purchase Obligations. Purchase obligations include agreements to purchase goods and services that are enforceable and legally binding and that specify all significant terms, including a minimum quantity and price. We are party to various obligations to purchase goods and services, including commitments to purchase various feedstock, utilities, nitrogen, oxygen, product storage, pipeline usage and logistic support, in each case in the ordinary course of our business, as well as various purchase commitments for our capital projects. As of December 31, 2024, we had $2,592 million of enforceable and legally binding purchase commitments due within the near term, and $5,509 million due over the long-term period.

Previous wording

Asset Retirement Obligations. As of December 31, 2023, we had $3 million asset retirement obligations due within the near term, and $55 million due over the long-term period. Asset retirement obligations includes the estimated costs and timing of payments to satisfy our recognized asset retirement obligations. We recognize asset retirement obligations in the period in which the liability becomes probable and reasonably estimable. Initially, the asset retirement obligation is recorded at fair value and capitalized as a component of the carrying value of the long-lived asset to which the obligation relates. See Note 1, "Description of Business and Significant Accounting Policies," in the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further detail of our asset retirement obligations.

Current wording

Asset Retirement Obligations. As of December 31, 2024, we had $38 million asset retirement obligations due within the near term, and $34 million due over the long-term period. Asset retirement obligations includes the estimated costs and timing of payments to satisfy our recognized asset retirement obligations. We recognize asset retirement obligations in the period in which the liability becomes probable and reasonably estimable. Initially, the asset retirement obligation is recorded at fair value and capitalized as a component of the carrying value of the long-lived asset to which the obligation relates. See Note 1, "Description of Business and Significant Accounting Policies," in the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for further detail of our asset retirement obligations.

Previous wording

Letters of Credit. As of December 31, 2023, we had $39 million standby letters of credit, made in the ordinary course of business, maturing within the near term, and no standby letters of credit maturing over the long-term period. We had no letters of credit outstanding under our Credit Agreement.

Current wording

Letters of Credit. As of December 31, 2024, we had $45 million standby letters of credit, made in the ordinary course of business, maturing within the near term, and no standby letters of credit maturing over the long-term period. We had no letters of credit outstanding under our Credit Agreement.

Previous wording

During the fourth quarter of 2023, the Westlake Epoxy business's sales volumes and prices, specifically base epoxy resins in Europe, continued to deteriorate. These lower sales volumes and prices were primarily driven by record exports out of Asia into Europe and North America. In addition, Westlake Epoxy operations in Europe have experienced sustained high energy and power costs. These factors negatively impacted Westlake Epoxy financial results during 2023. The Company identified these developments, along with management's outlook for the Westlake Epoxy business over the foreseeable future, as impairment indicators during the fourth quarter of 2023. Recoverability tests were performed for each of Westlake Epoxy's asset groups to compare the carrying amounts of assets to the net undiscounted cash flow projections of the asset group generated from its use and eventual disposition. The undiscounted cash flow projections were based on historical results, estimates made by management of future market conditions, current and future strategic and operational plans and future financial performance projected through the remaining useful life of the primary asset in the asset group. Based on the recoverability tests, we determined that the carrying amount of the primary assets of Westlake Epoxy's Netherlands asset group is not recoverable, and as such, an impairment loss was recorded to reduce the carrying amount of the asset group to its fair value. See Note 6 in the notes to the consolidated financial statements for further details.

Current wording

During the fourth quarter of 2023, the Westlake Epoxy business's sales volumes and prices, specifically base epoxy resins in Europe, continued to deteriorate. These lower sales volumes and prices were primarily driven by record exports out of Asia into Europe and North America. In addition, Westlake Epoxy operations in Europe have experienced sustained high energy and power costs. These factors negatively impacted Westlake Epoxy financial results during 2023. The Company identified these developments, along with management's outlook for the Westlake Epoxy business over the foreseeable future, as impairment indicators during the fourth quarter of 2023. Recoverability tests were performed for each of Westlake Epoxy's asset groups to compare the carrying amounts of assets to the net undiscounted cash flow projections of the asset group generated from its use and eventual disposition. The undiscounted cash flow projections were based on historical results, estimates made by management of future market conditions, current and future strategic and operational plans and future financial performance projected through the remaining useful life of the primary asset in the asset group. Based on the recoverability tests, we determined that the carrying amount of the primary assets of Westlake Epoxy's Netherlands asset group is not recoverable, and as such, an impairment loss was recorded in fourth quarter of 2023 to reduce the carrying amount of the asset group to its fair value. See Note 5 in the notes to the consolidated financial statements for further details.

Previous wording

The estimated useful lives of long-lived assets range from one to 40 years. Depreciation and amortization of these assets, including amortization of deferred turnaround costs, under the straight-line method over their estimated useful lives totaled $1,097 million, $1,056 million and $840 million in 2023, 2022 and 2021, respectively. If the useful lives of the assets were found to be shorter than originally estimated, depreciation or amortization charges would be accelerated.

Current wording

The estimated useful lives of long-lived assets range from one to 40 years. Depreciation and amortization of these assets, including amortization of deferred turnaround costs, under the straight-line method over their estimated useful lives totaled $1,114 million, $1,097 million and $1,056 million in 2024, 2023 and 2022, respectively. If the useful lives of the assets were found to be shorter than originally estimated, depreciation or amortization charges would be accelerated.

Previous wording

We defer the costs of planned major maintenance activities, or turnarounds, and amortize the costs over the period until the next planned turnaround of the affected unit. Total costs deferred on turnarounds were $179 million, $178 million and $215 million in 2023, 2022 and 2021, respectively. As of December 31, 2023, deferred turnaround costs, net of accumulated amortization, totaled $391 million. Amortization in 2023, 2022 and 2021 of deferred turnaround costs was $137 million, $80 million and $56 million, respectively. Expensing turnaround costs as incurred would likely result in greater variability of our quarterly operating results and would adversely affect our financial position and results of operations.

Current wording

We defer the costs of planned major maintenance activities, or turnarounds, and amortize the costs over the period until the next planned turnaround of the affected unit. Total costs deferred on turnarounds were $114 million, $179 million and $178 million in 2024, 2023 and 2022, respectively. As of December 31, 2024, deferred turnaround costs, net of accumulated amortization, totaled $352 million. Amortization in 2024, 2023 and 2022 of deferred turnaround costs was $153 million, $137 million and $80 million, respectively. Expensing turnaround costs as incurred would likely result in greater variability of our quarterly operating results and would adversely affect our financial position and results of operations. We commenced the next planned maintenance turnaround at our Petro 1 ethylene facility in the first quarter of 2025.

Previous wording

Additional information concerning long-lived assets and related depreciation and amortization appears in Notes 6 and 8 to the consolidated financial statements appearing elsewhere in this Form 10-K.

Current wording

Additional information concerning long-lived assets and related depreciation and amortization appears in Notes 5 and 7 to the consolidated financial statements appearing elsewhere in this Form 10-K.

Previous wording

Goodwill. At December 31, 2023, our recorded goodwill was $2,041 million. Goodwill is evaluated for impairment when events or changes in circumstances indicate the fair value of a reporting unit with goodwill has been reduced below its carrying value, and otherwise at least annually. We perform our annual impairment assessment for both the Performance and Essential Materials and Housing and Infrastructure Products reporting units in October each year. We may elect to perform an optional qualitative assessment to determine whether a quantitative impairment analysis is required. The qualitative assessment considers factors such as macroeconomic conditions, industry and market considerations, cost factors related to raw materials and labor, current and projected financial performance, changes in management or strategy, and market capitalization. Alternatively, we may unconditionally elect to bypass the qualitative assessment and perform a quantitative goodwill impairment assessment in any period.

Current wording

Goodwill. At December 31, 2024, our recorded goodwill was $2,031 million. Goodwill is evaluated for impairment when events or changes in circumstances indicate the fair value of a reporting unit with goodwill has been reduced below its carrying amount, and otherwise at least annually. We perform our annual impairment assessment for both the Performance and Essential Materials and Housing and Infrastructure Products reporting units in the fourth quarter each year. We may elect to perform an optional qualitative assessment to determine whether a quantitative impairment analysis is required. The qualitative assessment considers factors such as macroeconomic conditions, industry and market considerations, cost factors related to raw materials and labor, current and projected financial performance, changes in management or strategy, and market capitalization. Alternatively, we may unconditionally elect to bypass the qualitative assessment and perform a quantitative goodwill impairment assessment in any period.

Previous wording

We evaluated the Westlake Epoxy reporting unit's goodwill for impairment during the fourth quarter of 2023 in line with the timing of our annual goodwill impairment assessment for all reporting units. We performed the quantitative assessment for each of our reporting units within both of our segments during the fourth quarter of 2023. The quantitative analysis compares a reporting unit's fair value to its carrying amount to determine whether goodwill is impaired. The fair values of the reporting units are calculated using both a discounted cash flow methodology and a market value methodology. The discounted cash flow projections are based on a forecast to reflect the cyclicality of the business. The forecast is based on historical results, estimates by management of future market conditions, current and future strategic and operational plans and future financial performance. Significant assumptions used in the discounted cash flow projection included projected sales volumes based on production capacities, future sales prices, feedstock, energy and power costs and capital expenditures to maintain safe and reliable plant operations. The future cash flows are discounted to present value using an applicable discount rate. The significant assumptions used in determining the fair value of the reporting unit using the market value methodology include the determination of appropriate market comparables and the estimated multiples of EBITDA a willing buyer is likely to pay. Based on the quantitative tests performed during the fourth quarter of 2023, an impairment of the Westlake Epoxy reporting unit was identified as the carrying amount of the reporting unit exceeded its fair value. See Note 8 in the notes to the consolidated financial statements for further details. For all reporting units other than Westlake Epoxy, even if the fair values of the reporting units decreased by 10% from the fair values determined for the quantitative tests, the carrying amounts of the reporting units would not have exceeded their fair values. See Item 1A, "Risk Factors—If our goodwill or other long-lived assets become impaired in the future, we may be required to record non-cash charges to earnings, which could be significant."

Current wording

We performed the quantitative assessment for each of our reporting units within both of our segments during the fourth quarter of 2024. The quantitative analysis compares a reporting unit's fair value to its carrying amount to determine whether goodwill is impaired. The fair values of the reporting units are calculated using both a discounted cash flow methodology and a market value methodology. The discounted cash flow projections are based on a forecast to reflect the cyclicality of the business. The forecast is based on historical results, estimates by management of future market conditions, current and future strategic and operational plans and future financial performance. Significant assumptions used in the discounted cash flow projection include projected sales volumes based on production capacities, future sales prices, EBITDA margin, inclusive of feedstock, energy and power costs and capital expenditures. The future cash flows are discounted to present value using an applicable discount rate. The significant assumptions used in determining the fair value of the reporting unit using the market value methodology include the determination of appropriate market comparables and the estimated multiples of EBITDA a willing buyer is likely to pay. Based on the quantitative tests performed during the fourth quarter of 2024, the fair value of each of the reporting units with goodwill were substantially in excess of the carrying amounts. See Note 7 in the notes to the consolidated financial statements for further details. For all reporting units with goodwill, even if the fair values of the reporting units decreased by 10% from the fair values determined for the quantitative tests, the carrying amounts of the reporting units would not have exceeded their fair values. See Item 1A, "Risk Factors—If our goodwill or other long-lived assets become impaired in the future, we may be required to record non-cash charges to earnings, which could be significant."

Previous wording

Accounting for employee retirement plans involves estimating the cost of benefits that are to be provided in the future and attempting to match, for each employee, that estimated cost to the period worked. To accomplish this, we rely extensively on advice from actuaries, and we make assumptions about inflation, investment returns, mortality, employee turnover and discount rates that ultimately impact amounts recorded. Changes in these assumptions may result in different expense and liability amounts. One of the more significant assumptions relates to the discount rate for measuring benefit obligations. At December 31, 2023, the projected pension benefit obligations for U.S. and non-U.S. plans were calculated using assumed weighted average discount rates of 5.0% and 3.2%, respectively. The discount rates were determined using a benchmark pension discount curve and applying spot rates from the curve to each year of expected benefit payments to determine the appropriate discount rate. As a result of the funding relief provided by the enactment of the Bipartisan Budget Act of 2015, no minimum funding requirements are expected during 2024 for the U.S. pension plans. Additional information on the 2024 funding requirements and key assumptions underlying these benefit costs appear in Note 14 to the consolidated financial statements appearing elsewhere in this Form 10-K.

Current wording

Accounting for employee retirement plans involves estimating the cost of benefits that are to be provided in the future and attempting to match, for each employee, that estimated cost to the period worked. To accomplish this, we rely extensively on advice from actuaries, and we make assumptions about inflation, investment returns, mortality, employee turnover and discount rates that ultimately impact amounts recorded. Changes in these assumptions may result in different expense and liability amounts. One of the more significant assumptions relates to the discount rate for measuring benefit obligations. At December 31, 2024, the projected pension benefit obligations for U.S. and non-U.S. plans were calculated using assumed weighted average discount rates of 5.5% and 3.5%, respectively. The discount rates were determined using a benchmark pension discount curve and applying spot rates from the curve to each year of expected benefit payments to determine the appropriate discount rate. As a result of the funding relief provided by the enactment of the Bipartisan Budget Act of 2015, no minimum funding requirements are expected during 2025 for the U.S. pension plans. Additional information on the 2025 funding requirements and key assumptions underlying these benefit costs appear in Note 13 to the consolidated financial statements appearing elsewhere in this Form 10-K.