ARMSTRONG WORLD INDUSTRIES INC

Condensed Consolidated Statements of Earnings and Comprehensive Income

(amounts in millions, except per share data)

Condensed Consolidated Balance Sheets

Condensed Consolidated Statements of Shareholders’ Equity

Condensed Consolidated Statements of Cash Flows

(amounts in millions)

NOTE 1. BUSINESS AND BASIS OF PRESENTATION

Armstrong World Industries, Inc. (“AWI”) is a Pennsylvania corporation incorporated in 1891. When we refer to “AWI,” the “Company,” “we,” “our” or “us” in these notes, we are referring to AWI and its subsidiaries.

Except as disclosed in this note, the accounting policies used in preparing the Condensed Consolidated Financial Statements in this Form 10-Q are the same as those used in preparing the Consolidated Financial Statements for the year ended December 31, 2023. These statements should therefore be read in conjunction with the Consolidated Financial Statements and notes that are included in the Annual Report on Form 10-K for the fiscal year ended December 31, 2023. In the opinion of management, all adjustments of a normal recurring nature have been included to provide a fair statement of the results for the reporting periods presented. Operating results for the third quarter and first nine months of 2024 and 2023 included in this report are unaudited. Quarterly results are not necessarily indicative of annual earnings, primarily due to the different level of sales in each quarter of the year and the possibility of changes in general economic conditions.

These Condensed Consolidated Financial Statements are prepared in accordance with U.S. generally accepted accounting principles. The statements include management estimates and judgments, where appropriate. Management utilizes estimates to record many items, including certain asset values, contingent purchase price liabilities, allowances for bad debts, inventory obsolescence and lower of cost and net realizable value charges, warranty reserves, workers’ compensation, general liability and environmental claims, and income taxes. When preparing an estimate, management determines the amount based upon the consideration of relevant information and may confer with outside parties, including external counsel. Actual results may differ from these estimates.

Acquisitions and Investments in Unconsolidated Affiliates

In April 2024, we acquired all of the issued and outstanding membership interests in 3form, LLC (“3form”), a subsidiary of Hunter Douglas, Inc. based in Salt Lake City, Utah. 3form is a designer and manufacturer of architectural resin and glass products used for specialty walls, partitions and ceilings. The operations, assets and liabilities of 3form are included in our Architectural Specialties segment.

In January 2024, we entered into a strategic partnership and equity investment in Overcast Innovations LLC (“Overcast”) with McKinstry Essention, LLC whereby we contributed $5.5 million in exchange for a 19.5% ownership interest in Overcast, with future rights to increase our ownership interest. Overcast is a solutions company offering prefabricated ceiling cloud systems, modular grid platforms and engineering design services to reduce waste and inefficiencies in the built environment. Our investment and equity earnings in Overcast are included in our Unallocated Corporate segment.

In October 2023, we acquired a portion of the business and certain assets of Insolcorp, LLC (“Insolcorp”), based in Albemarle, North Carolina, used to develop, test and manufacture energy saving products deployed in building and roofing installations. The acquired operations, assets and liabilities of Insolcorp are included in our Mineral Fiber segment.

In July 2023, we acquired all of the issued and outstanding stock of BOK Modern, LLC (“BOK”), based in San Rafael, California. BOK is a designer of metal facade architectural solutions. The operations, assets and liabilities of BOK are included in our Architectural Specialties segment.

Recently Issued Accounting Standards

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, “Improvements to Reportable Segment Disclosures,” which modifies reportable segment disclosure requirements. This ASU expands annual and interim reportable segment disclosures, including: disclosure of the title and position of our chief operating decision maker (“CODM”), interim and annual disclosure of significant reportable segment expenses that are components of segment profit or loss information provided to the CODM, and interim disclosure of all annual reportable segment profit or loss and asset data currently only required to be disclosed annually. This guidance is effective for annual periods beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. The adoption of this standard is not expected to have an impact on our financial statements, but will result in expanded reportable segment disclosures.

In December 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures,” which modifies the disclosure requirements for income taxes. This ASU requires disclosure of tabular statutory to effective rate reconciliation in both percentages and dollars, additional disaggregated rate reconciliation categories and disaggregation of both income taxes paid and income tax expense by jurisdiction. This guidance is effective for annual periods beginning after December 15, 2024. We expect this ASU to only impact our disclosures with no impact to our result of operations, cash flows and financial condition.

NOTE 2. SEGMENT RESULTS

Our product-based Mineral Fiber and Architectural Specialties segment net sales represent the product-based group offerings we sell to external customers.

NOTE 3. REVENUE

Disaggregation of Revenues

Our Mineral Fiber and Architectural Specialties operating segments both manufacture and sell ceiling and wall systems (primarily mineral fiber, fiberglass wool, metal, wood, felt, wood fiber, architectural resin and glass, and glass-reinforced-gypsum) throughout the Americas. We disaggregate revenue based on our product-based segments and major customer channels, as they represent the most appropriate depiction of how the nature, amount and timing of revenues and cash flows are affected by economic factors. Net sales by major customer channel are as follows:

Distributors – represents net sales to building materials distributors who re-sell our products to contractors, subcontractors’ alliances, large architect and design firms, and major facility owners. Geographically, this category includes sales throughout the U.S., Canada, and Latin America.

Home centers – represents net sales to home centers, such as Lowe’s Companies, Inc. and The Home Depot, Inc. This category includes sales primarily to U.S. customers.

Direct customers – represents net sales to contractors, subcontractors, and large architect and design firms. This category includes sales primarily to U.S. customers.

Other – represents net sales to independent retailers and certain national account customers, including wholesalers who re-sell our products to dealers who service builders, contractors, online customers, major facility owners, group purchasing organizations, maintenance, repair and operating entities and original product manufacturers. Geographically, this category includes sales throughout the U.S., Canada, and Latin America.

The following tables provide net sales by major customer channel within our Mineral Fiber and Architectural Specialties segments for thethree and nine months ended September 30, 2024 and 2023:

NOTE 4. ACQUISITIONS

We account for acquisitions under the acquisition method and the results of operations of acquired operations are included in the Condensed Consolidated Financial Statements from the acquisition date. Acquisition related costs are expensed as incurred. We allocate total consideration to the assets acquired and liabilities assumed based on their estimated fair values, with the remaining unallocated amount recorded as goodwill. Definite-lived intangible assets are amortized over estimated useful lives on a straight-line basis and recorded as a component of operating income. The fair value of acquired intangible assets is estimated by applying discounted cash flow models based on significant level 3 inputs not observable in the market. Key assumptions are developed based on each acquirees’ historical experience, future projections and comparable market data including future cash flows, long-term growth rates, implied royalty rates, attrition rates and discount rates. Acquisition-related contingent consideration that is classified as a liability is measured at fair value as of the acquisition date. The fair value of contingent consideration is remeasured at each reporting period, and any future changes in the fair value of contingent consideration recorded in reporting periods after the acquisition date are recorded within loss related to change in fair value of contingent consideration on our Condensed Consolidated Statements of Earnings and Comprehensive Income.

3form

In April 2024, we acquired the issued and outstanding membership interests in 3form for a purchase price of $93.5 million, net of $0.5 million of cash acquired, subject to customary post-closing adjustments for working capital. The total fair value of tangible assets acquired, less liabilities assumed, was $34.5 million. The fair value of significant classes of assets acquired and liabilities assumed included accounts receivable of $6.6 million, inventory of $7.9 million, property, plant and equipment of $35.0 million, operating lease assets of $10.1 million, operating lease liabilities of $10.0 million and accounts payable and accrued liabilities of $16.3 million. The total fair value of identifiable intangible assets acquired was $40.2 million, resulting in $19.3 million of goodwill. The following table summarizes the fair values of identifiable intangible assets acquired, and their estimated useful lives:

Goodwill from the 3form acquisition relates to many factors, including the technical competencies and capabilities of the acquired workforce and our strategic intent to integrate and leverage those competencies and capabilities to advance and expand our portfolio of solutions and offerings. All of the acquired goodwill is deductible for tax purposes. Valuations for assets acquired and liabilities assumed are based on preliminary estimates that are subject to revisions and may result in adjustments to preliminary values as valuations are finalized.

The following table summarizes aggregate unaudited as reported and pro forma information assuming the acquisition of 3form had occurred on January 1, 2023. The unaudited pro forma results include the depreciation and amortization associated with the acquired assets. The unaudited pro forma results do not include any expected benefits from the 3form acquisition. Accordingly, the unaudited pro forma results are not necessarily indicative of either future results of operations or results that might have been achieved had the acquisition been consummated as of January 1, 2023.

BOK

In July 2023, we acquired all of the issued and outstanding stock of BOK for a purchase price of $13.8 million and additional contingent consideration payable upon the achievement of certain future performance obligations in 2024 and 2025 not to exceed $3.3 million. We, with the assistance of an independent, third-party valuation specialist, utilized a Monte Carlo simulation to determine the estimated fair value of the contingent consideration of $0.8 million at the acquisition date, resulting in a purchase price of $14.6 million. The total fair value of tangible assets acquired less liabilities assumed was $1.4 million. The total fair value of identifiable intangible assets acquired was $5.4 million, resulting in $7.8 million of goodwill. Acquired intangible assets were comprised of amortizable patents of $1.9 million, amortizable trademarks of $1.8 million, amortizable customer relationships of $1.4 million, and non-compete agreements of $0.3 million, that are being amortized on a straight-line basis over a weighted-average life of 18,15,2, and 3 years, respectively. All of the acquired goodwill is deductible for tax purposes.

For the three and nine months ended September 30, 2024, net sales of $26.6 million and $50.1 million, respectively, from BOK and 3form were included in our Condensed Consolidated Statements of Earnings and Comprehensive Income since the acquisition dates. The impact of the acquisitions of BOK and 3form were immaterial to earnings (loss) before income taxes for all periods presented.

Software-Related Intellectual Property

In May 2023, we acquired a co-ownership interest in certain software-related intellectual property for a total purchase price of $11.0 million, of which $10.0 million was paid in the second quarter of 2023 and an additional $1.0 million was paid in the fourth quarter of 2023. As a result of this transaction, the total fair value of identifiable intangible assets acquired was $6.5 million of software and $4.5 million of developed technology, which are being amortized over a weighted-average life of 5 and 17 years, respectively.

NOTE 5. ACCOUNTS AND NOTES RECEIVABLE

We sell our products to select, pre-approved customers whose businesses are affected by changes in economic and market conditions. We consider these factors and the financial condition of each customer when establishing our allowance for losses from doubtful accounts.

NOTE 6. INVENTORIES

NOTE 7. OTHER CURRENT ASSETS

As of December 31, 2023, assets held for sale included the building and land of our idled Mineral Fiber plant in St. Helens, Oregon and the building and related land of an Architectural Specialties design center in Chicago, Illinois. During the second quarter of 2024, we sold the Architectural Specialties design center in Chicago, Illinois for total proceeds of $2.1 million, withno gain or loss recorded upon sale. During the third quarter of 2024, we sold our idled Mineral Fiber plant in St. Helens, Oregon for total proceeds of $9.4 million, with a $4.6 million gain recorded upon sale. As of September 30, 2024, assets held for sale included a parcel of undeveloped land adjacent to our corporate campus in Lancaster, Pennsylvania and recorded as a component of our Mineral Fiber segment. Upon classification to held for sale during the third quarter, we recognized an impairment loss of $4.9 million. The impact of these transactions is recorded within impairment and gain on sale of fixed assets, net on our Condensed Consolidated Statements of Earnings and Comprehensive Income.

NOTE 8. INVESTMENTS IN UNCONSOLIDATED AFFILIATES

Investments in unconsolidated affiliates include our 50% equity interest in Worthington Armstrong Venture (“WAVE”), our joint venture with Worthington Enterprises, Inc., and our 19.5% equity interest in Overcast. Both the WAVE joint venture and Overcast investment are reflected within our Condensed Consolidated Financial Statements using the equity method of accounting. WAVE is reflected as a component of our Mineral Fiber segment while Overcast is included as a component of our Unallocated Corporate segment.

Condensed financial statement data for WAVE is summarized below.

The following table presents equity (earnings) losses from our unconsolidated affiliates for thethree and nine months ended September 30, 2024 and 2023:

NOTE 9. GOODWILL AND INTANGIBLE ASSETS

The following table details amounts related to our goodwill and intangible assets as of September 30, 2024 and December 31, 2023:

The net increase in goodwill as of September 30, 2024 compared to December 31, 2023 was due to the acquisition of 3form, net of foreign exchange movements.

NOTE 10. OTHER NON-CURRENT ASSETS

NOTE 11. ACCOUNTS PAYABLE AND ACCRUED EXPENSES

NOTE 12. INCOME TAX EXPENSE

The effective tax rate for the third quarter of 2024 was essentially unchanged from the same period in 2023. The decrease in the effective tax rate for the first nine months of 2024 in comparison to the same period in 2023 was primarily due to an increase in discrete tax benefits recognized, partially offset by less favorable permanent adjustments.

It is reasonably possible that the amount of unrecognized tax benefits could significantly increase or decrease within the next twelve months. However, an estimate of the range of reasonably possible outcomes cannot be reliably made at this time. Changes to unrecognized tax benefits could result from the expiration of statutes of limitations, the completion of ongoing examinations, or other unforeseen circumstances.

NOTE 13. DEBT

Our long-term debt is comprised of borrowings outstanding under our $950.0 million variable rate senior credit facility, which is comprised of a $500.0 million revolving credit facility (with a $150.0 million sublimit for letters of credit) and a $450.0 million Term Loan A. As of September 30, 2024 and December 31, 2023, the principal balance of our Term Loan A was $433.1 million and $450.0 million, respectively. As of September 30, 2024 and December 31, 2023, borrowings outstanding under our revolving credit facility were $125.0 million and $140.0 million, respectively. We also have a $25.0 million bi-lateral letter of credit facility.

We utilize lines of credit and other commercial commitments to ensure that adequate funds are available to meet operating requirements. Letters of credit are currently arranged through our revolving credit facility and our bi-lateral facility. Letters of credit may be issued to third party suppliers, insurance companies and financial institutions and typically can only be drawn upon in the event of AWI’s failure to pay its obligations to the beneficiary. The following table presents details related to our letters of credit facilities:

NOTE 14. PENSIONS AND OTHER BENEFIT PROGRAMS

Following are the components of net periodic benefit costs (credits):

Excluded from the table above is the net periodic pension cost associated with an unfunded defined benefit pension plan in Germany that was not included as part of prior dispositions. This plan is reported as a component of our Unallocated Corporate segment. Net periodic pension cost for this plan was immaterial for the three and nine months ended September 30, 2024 and 2023.

The service cost component of net benefit cost has been presented in the Condensed Consolidated Statements of Earnings and Comprehensive Income within cost of goods sold and selling, general and administrative (“SG&A”) expenses for all periods presented, which are the same line items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are presented in the Condensed Consolidated Statements of Earnings and Comprehensive Income separately from the service cost component within other non-operating income, net.

NOTE 15. FINANCIAL INSTRUMENTS AND CONTINGENT CONSIDERATION

We do not hold or issue financial instruments for trading purposes. The estimated fair values of our financial instruments and contingent consideration are as follows:

The carrying amounts of cash and cash equivalents, customer receivables and accounts payable approximate fair value because of the short-term maturity of these instruments. The fair value estimates of long-term debt are based on data for our Term Loan A debt provided by a major financial institution. The fair value estimates for interest rate swap contracts are estimated with the assistance of third-party valuation experts and verified by obtaining quotes from major financial institutions. We engaged an independent, third-party valuation specialist to determine the fair value estimate for acquisition-related contingent consideration payable based on performance, which was measured using a Monte Carlo simulation.

As of September 30, 2024 and December 31, 2023, acquisition-related contingent consideration liabilities represented additional cash consideration payable related to our acquisitions of Insolcorp and BOK that will be paid upon the final achievement of certain financial and performance milestones. As of September 30, 2024, $0.7 million of acquisition-related contingent consideration was classified as accounts payable and other accrued expenses, while $1.5 million was classified as other long-term liabilities on our Condensed Consolidated Balance Sheet. As of December 31, 2023, $1.6 million was classified as other long-term liabilities on our Condensed Consolidated Balance Sheet.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. Three levels of inputs may be used to measure fair value:

Level 1 — Quoted prices in active markets for identical assets or liabilities;

Level 2 — Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data; or

Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

The fair value measurement of liabilities measured at fair value on a recurring basis and reported on the Condensed Consolidated Balance Sheets is summarized below:

Acquisition-related contingent consideration of $2.2 million and $1.6 million as of September 30, 2024 and December 31, 2023, respectively, was measured with the use of significant unobservable inputs, which included financial projections over respective earn-out periods, the volatility of the underlying financial metrics and estimated discount rates. All changes in acquisition-related contingent consideration liabilities subsequent to the initial acquisition-date measurements were recorded as a component of operating income on our Condensed Consolidated Statements of Earnings and Comprehensive Income.

The following table summarizes the weighted-average of the significant unobservable inputs as of September 30, 2024:

The changes in fair value of the acquisition-related contingent consideration liabilities for the three and nine months ended September 30, 2024 and 2023 were as follows:

During the three and nine months ended September 30, 2024, the changes in fair value were primarily due to changes in financial projections over each entity’s earn-out periods and due to changes in valuation inputs.

During the nine months ended September 30, 2023, we paid $15.2 million of additional cash consideration, which represented the final achievement of certain financial and performance milestones through December 31, 2022 for the July 2020 acquisition of TURF Design, Inc. The additional cash consideration paid wasclassified as cash flows from financing activities in our Condensed Consolidated Statements of Cash Flows, up to the acquisition date fair value. The portion of additional cash consideration paid in excess of the acquisition date fair value was classified as cash flows from operating activities in our Condensed Consolidated Statements of Cash Flows.

NOTE 16. DERIVATIVE FINANCIAL INSTRUMENTS

We are exposed to market risk from changes in foreign exchange rates, interest rates and commodity prices that could impact our results of operations, cash flows and financial condition. We use interest rate derivatives to manage our exposures to interest rates. At inception, interest rate swap derivatives that we designate as hedging instruments are formally documented as a hedge of a forecasted transaction or cash flow hedge. We also formally assess, both at inception and at least quarterly thereafter, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in the cash flows of the hedged item. If it is determined that a derivative ceases to be a highly effective hedge, or if the anticipated transaction is no longer probable of occurring, we discontinue hedge accounting, and any future mark-to-market adjustments are recognized in earnings. We use derivative financial instruments as risk management tools and not for speculative trading purposes.

Counterparty Risk

We enter into derivative transactions only with established financial institution counterparties having an investment-grade credit rating. We monitor counterparty credit ratings on a regular basis. All of our derivative transactions with counterparties are governed by master International Swap and Derivatives Association agreements (“ISDAs”) with netting arrangements. These agreements can limit our exposure in situations where we have gain and loss positions outstanding with a single counterparty. We do not post nor do we receive cash collateral with any counterparty for our derivative transactions. These ISDAs do not have any credit contingent features; however, a default under our bank credit facility would trigger a default under these agreements. Exposure to individual counterparties is controlled and we consider the risk of counterparty default to be negligible.

Interest Rate Risk

We utilize interest rate swaps to minimize the fluctuations in earnings caused by interest rate volatility. These swaps are designated as cash flow hedges against changes in interest rates for a portion of our variable rate debt.

The following table summarizes our interest rate swaps as of September 30, 2024:

Under the terms of the interest rate swap with a November 28, 2018 trade date above, we pay a fixed rate monthly and receive a floating rate based on the Secured Overnight Financing Rate (“SOFR”), inclusive of a 0% floor. Under the terms of all remaining interest rate swaps above, we pay a fixed rate monthly and receive a floating rate based on SOFR.

Financial Statement Impacts

The following tables detail amounts related to our derivatives as of September 30, 2024 and December 31, 2023. We did not have any derivative assets or liabilities not designated as hedging instruments as of September 30, 2024 or December 31, 2023. The derivative asset amounts below are shown gross and have not been netted.

As of September 30, 2024, the amount of existing net losses in Accumulated Other Comprehensive Income (“AOCI”) expected to be recognized in net earnings over the next twelve months was $0.9 million.

NOTE 17. OTHER LONG-TERM LIABILITIES

NOTE 18. SHAREHOLDERS’ EQUITY

Common Stock Repurchase Plan

On July 29, 2016, our Board of Directors approved our share repurchase program authorizing us to repurchase up to $150.0 million of our outstanding shares of common stock (the “Program”). Since inception of the Program, we have been further authorized to repurchase up to an aggregate of $1,700.0 million of our outstanding shares of common stock through December 31, 2026. We had $676.8 million remaining under the Board’s repurchase authorization as of September 30, 2024.

Repurchases under the Program may be made through open market, block and privately negotiated transactions, including

Rule 10b5-1 plans, at such times and in such amounts as management deems appropriate, subject to market and business conditions, regulatory requirements and other factors. The Program does not obligate AWI to repurchase any particular amount of common stock and may be suspended or discontinued at any time without notice.

During the three months ended September 30, 2024, we repu rchased 0.1 million shares under the Program for a total cost of $15.0 million, excluding commissions and taxes, or an average price of $119.05 per share. During the nine months ended September 30, 2024, we repurchased 0.4 million shares under the Program for a total cost of $40.0 million, excluding commissions and taxes, or an average price of $113.51 per share. Since inception, we have repurchased 14.5 million shares under the Program for a total cost of $1,023.2 million, excluding commissions and taxes, or an average price of $70.39 per share.

Dividends

In February, April and July 2024, our Board of Directors declared a $0.28 per share quarterly dividend, which was paid to shareholders in March, Mayand August 2024. On October 23, 2024, our Board of Directors declared a $0.308 per share quarterly dividend to be paid in November 2024.

Accumulated Other Comprehensive (Loss)

(1)Amounts are net of tax.

NOTE 19. LITIGATION AND RELATED MATTERS

ENVIRONMENTAL MATTERS

Environmental Compliance

Our manufacturing and research facilities are affected by various federal, state and local requirements relating to the discharge of materials and the protection of the environment. We make expenditures necessary for compliance with applicable environmental requirements at each of our operating facilities. While these expenditures are not typically material, the applicable regulatory requirements continually change and, as a result, we cannot predict with certainty the amount, nature or timing of future expenditures associated with environmental compliance.

Environmental Sites

Summary

We are actively involved in the investigation and remediation of existing or potential environmental contamination under the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”) and state Superfund and similar environmental laws at two domestically owned locations allegedly resulting from past industrial activity.

In each location, we are one of multiple potentially responsible parties and have agreed to jointly fund the required investigation and remediation, while preserving our defenses to the liability. We may also have rights of contribution or reimbursement from other parties or coverage under applicable insurance policies. We have pursued coverage and recoveries under those applicable insurance policies with respect to certain of the sites, including the Macon, Georgia site and the Elizabeth City, North Carolina site, each of which is summarized below. Other than disclosed below, we are unable to predict the outcome of these matters or the timing of any future recoveries, whether through settlement or otherwise. We are also unable to predict the extent to which any recoveries might cover our final share of investigation and remediation costs for these sites. Our final share of investigation and remediation costs may exceed any such recoveries, and such amounts net of insurance recoveries may be material.

Between 2017 and 2021, we entered into settlement agreements totaling $53.0 million with certain legacy insurance carriers to resolve ongoing litigation and recover fees and costs previously incurred by us in connection with certain environmental sites. These settlements were recorded as reductions to cost of goods sold and SG&A expenses, reflecting the same income statement categories where environmental expenditures were historically recorded. From 2020 through the third quarter of 2024, cumulative insurance recoveries exceeded cumulative expenses to date related to the respective environmental sites and the excess was recorded within long-term liabilities on our Condensed Consolidated Balance Sheets. Excess recoveries are released to offset additional reserves for potential liabilities incurred on the respective environmental sites. As of December 31, 2023, insurance recoveries in excess of cumulative expenses were $2.6 million. We may enter into additional settlement agreements in the future, which may or may not be material, with other legacy insurers to obtain reimbursement or contribution for environmental site expenses.

Estimates of our future liability at the environmental sites are based on evaluations of currently available facts regarding each individual site. We consider factors such as our activities associated with the site, existing technology, presently enacted laws and regulations and prior company experience in remediating contaminated sites. Although current law imposes joint and several liability on all parties at Superfund sites, our contribution to the remediation of these sites is expected to be limited by the number of other companies potentially liable for site remediation. As a result, our estimated liability reflects only our expected share. In determining the probability of contribution, we consider the solvency of other parties, the site activities of other parties, whether liability is being disputed, the terms of any existing agreements and experience with similar matters, and the effect of our October 2006 Chapter 11 reorganization upon the validity of the claim, if any.

Specific Material Events

Macon, Georgia

The U.S. Environmental Protection Agency (the “EPA”) has listedtwo landfills located on a portion of our facility in Macon, Georgia, along with the former Macon Naval Ordnance Plant landfill adjacent to our property, portions of Rocky Creek, and certain tributaries leading to Rocky Creek (collectively, the “Macon Site”) as a Superfund site on the National Priorities List due to the presence of contaminants, most notably polychlorinated biphenyls (“PCBs”).

In September 2010, we entered into an Administrative Order on Consent for a Removal Action (the “Removal Action”) with the EPA to investigate PCB contamination inone of the landfills on our property, the Wastewater Treatment Plant Landfill (“Operable Unit 1”). After completing an investigation of Operable Unit 1 and submitting our final Engineering Evaluation/Cost Analysis, the EPA issued an Action Memorandum in July 2013 selecting our recommended remedy for the Removal Action. The Operable Unit 1 response action is complete and the final report was submitted to the EPA in October 2016. The EPA approved the final report in November 2016, and a Post-Removal Control Plan was submitted to the EPA in March 2017. AWI has been conducting operation and maintenance activities of the completed remedy since 2017 consistent with the approved Post-Removal Control Plan.

In September 2015, AWI and other Potential Responsible Parties (“PRPs”) received a Special Notice Letter from the EPA under CERCLA inviting AWI and the PRPs to enter into the negotiation of a Remedial Investigation and Feasibility Study (“RI/FS”) with respect to the remainder of the Superfund site, which included the other landfill on our property, as well as areas on and adjacent to our property and Rocky Creek (“Operable Unit 2”). We and the other PRPs entered into a settlement agreement with the EPA effective September 2018, in response to the Special Notice Letter to conduct the RI/FS. The PRPs submitted an RI/FS work plan, which was approved by the EPA in September 2019. Investigative work on this portion of the site commenced in December 2019.

In June 2021, the PRPs submitted a Site Characterization Summary Report (“SCSR”) for Operable Unit 2 to the EPA. The purpose of the SCSR was to demonstrate that the available data for Operable Unit 2 was adequate for the risk assessment and for the development of remedial action objectives. In the second half of 2022, the EPA and the PRPs agreed to separate all non-groundwater aspects of the site; the groundwater investigation is ongoing. In August 2022, the PRPs submitted a Human Health Baseline Risk Assessment to the EPA, and in December 2022, the PRPs submitted a final Baseline Ecological Risk Assessment for all non-groundwater aspects of Operable Unit 2 to the EPA. Both risk assessments served as exhibits to the Remedial Investigation Report (“RIR”), which the EPA approved in July 2023.

Based on findings in the RIR, the PRPs developed a draft Feasibility Study (“FS”) to identify and evaluate potential remedial alternatives for all non-groundwater elements of Operable Unit 2. The draft FS was submitted to the EPA in August 2023. The EPA and the State of Georgia provided comments in October 2023 and a revised FS was submitted in November 2023. The EPA conditionally approved the FS in April 2024 and issued a Proposed Remedial Action Plan (“Proposed Plan”) for the non-groundwater elements at the site in May 2024. The EPA held a public meeting in May 2024 to explain the Proposed Plan and start the thirty-day period for public comment, which closed on June 30, 2024. The EPA’s Proposed Plan included a total cost estimate for the non-groundwater elements at the site of approximately $8 million. In August 2024, the EPA signed the Record of Decision, selecting the remedy outlined in the Proposed Plan. The portion of these remediation costs that AWI will bear for all non-groundwater elements of Operable Unit 2 will not be known until the PRPs resolve the final allocation of costs.

It is probable that we will incur field investigation, engineering and oversight costs associated with designing and implementing the remedy for all non-groundwater elements of Operable Unit 2 and for completing an RI/FS for all groundwater elements of Operable Unit 2 (now designated “Operable Unit 3” by the EPA). We may also ultimately incur costs in remediating contamination discovered during the RI/FS for Operable Unit 3 and we are unable to reasonably estimate our final share of the total costs associated with the investigation work or any resulting remediation therefrom, although such amounts may be material to any one quarter's or year's results of operations in the future. We do not expect the total future costs to have a material adverse effect on our liquidity or financial condition as the cash payments may be made over many years.

Elizabeth City, North Carolina

This site is a former cabinet manufacturing facility that from 1977 until 1996 was operated by Triangle Pacific Corporation, which became Armstrong Wood Products, Inc. (“AWP”), and is now known as AHF Products, LLC. The site was formerly owned by the U.S. Navy (“Navy”) and Westinghouse, which was purchased by Paramount Global (“Paramount”) (then known as CBS Corporation). We assumed ownership of the site when we acquired the stock of AWP in 1998. Prior to our acquisition, the North Carolina Department of Environment and Natural Resources listed the site as a hazardous waste site. In 1997, AWP entered into a cost sharing agreement with Westinghouse whereby the parties agreed to share equally in costs associated with investigation and potential remediation. In 2000, AWP and Paramount entered into an Administrative Order on Consent to conduct an RI/FS with the EPA for the site. In 2007, we and Paramount entered into an agreement with the Navy whereby the Navy agreed to pay one third of defined past and future investigative costs up to a certain amount, which has now been exhausted. The EPA approved an RI/FS work plan for the site in August 2011. In January 2014, we submitted draft RI and Risk Assessment reports and conducted supplemental investigative work based upon agency comments to those reports. In connection with the separation of Armstrong Flooring, Inc. in 2016, we agreed to retain any legacy environmental liabilities associated with the AWP site. The EPA published an Interim Action Proposed Plan for the site in April 2018 seeking public comment until June 2018. The EPA evaluated comments, including ours, and has published its Interim Record Of Decision (“IROD”) selecting an interim cleanup approach. In September 2018, AWI and Paramount received a Special Notice Letter from the EPA under CERCLA inviting AWI and Paramount to enter into the negotiation of a settlement agreement to conduct or finance the response action at the site. In response to the September 2018 Special Notice Letter, we and Paramount submitted a good faith offer to the EPA in May 2019. In June 2021, we entered into a negotiated Partial Consent Decree and Site Participation Agreement with the EPA, Paramount and the U.S. on behalf of the Navy for the remedial design and remedial action for the interim remedy. Because the U.S. does not conduct work as a PRP at Superfund sites, similar to the 2007 agreement, the U.S. agreed to pay its share of the estimated costs of performing the work. The Partial Consent Decree was entered by the U.S. District Court for the Eastern District of North Carolina in January 2022. A Remedial Design Work Plan (“RDWP”) for the site was submitted to the EPA in June 2022, and AWI and Paramount responded on November 2022 to comments received from the EPA in September 2022. The EPA approved the revised RDWP in February 2023 and in June 2023, the parties submitted a Pre-Design Investigation Work Plan. The EPA provided comments on the Pre-Design Investigation Work Plan in November 2023 and the revised document was submitted to the EPA in December 2023. In March 2024, the EPA issued a conditional approval of the Pre-Design Investigation Work Plan, subject to the Company and Paramount addressing the EPA comments on a component of the Work Plan within 60 days. In May 2024 and August 2024, AWI submitted revisions to the Pre-Design Investigation Work Plan to address additional comments received from the EPA. The current estimate of future liability at this site includes only our estimated share of the costs of implementing the interim remedial action under the IROD. We are unable to reasonably estimate our final share of the total costs associated with the interim or final remediation at the site, although such amounts may be material to any one quarter's or one year’s results of operations in the future. We do not expect the total future costs to have a material adverse effect on our liquidity or financial condition as the cash payments may be made over many years.

Summary of Financial Position

Total liabilities, reflected within other long-term liabilities on the Condensed Consolidated Balance Sheets, for environmental matters that we consider probable and for which a reasonable estimate of the probable liability could be made were $4.2 million and $0.5 million as of September 30, 2024 and December 31, 2023, respectively. As noted above, expenses associated with additional reserves for environmental matters were offset through the release of a portion of the balance of insurance recoveries in excess of cumulative expenses. During the three and nine months ended September 30, 2024, we recorded $0.1 million and $4.1 million of additional reserves for potential environmental liabilities, of which, $2.5 million was offset through a release of our remaining environmental insurance recoveries in excess of cumulative expenses, and $1.6 million was recorded as a component of SG&A expenses on our Condensed Consolidated Statements of Earnings and Comprehensive Income. During the three and nine months ended September 30, 2023, we recorded $0.5 million of additional reserves for potential environmental liabilities, all of which was offset through a release of our remaining environmental insurance recoveries in excess of cumulative expenses. Where existing data is sufficient to estimate the liability, that estimate has been used; where only a range of probable liabilities is available and no amount within that range is more likely than any other, the lower end of the range has been used. As assessments and remediation activities progress at each site, these liabilities are reviewed to reflect new information as it becomes available and adjusted to reflect amounts actually incurred and paid. These liabilities are undiscounted.

The estimated environmental liabilities above do not take into account any claims for additional recoveries from insurance or third parties. It is our policy to record insurance recoveries as assets in the Condensed Consolidated Balance Sheets when realizable. We incur costs to pursue environmental insurance recoveries, which are expensed as incurred.

Actual costs to be incurred at identified sites may vary from our estimates. Based on our knowledge of the identified sites, it is not possible to reasonably estimate future costs in excess of amounts already recognized.

OTHER CLAIMS

From time to time, we are involved in other various lawsuits, claims, investigations and other legal matters that arise in the ordinary course of business, including matters involving our products, intellectual property, relationships with suppliers, relationships with distributors, other customers or end users, relationships with competitors, employees and other matters. In connection with those matters, we may have rights of indemnity, contribution or reimbursement from other parties or coverage under applicable insurance policies. When applicable and appropriate, we will seek indemnity, contribution or reimbursement from other parties and pursue coverage and recoveries under those policies, but are unable to predict the outcome of those demands. While complete assurance cannotbe given to the outcome of any proceedings relating to these matters, we do not believe that any current claims, individually or in the aggregate, will have a material adverse effect on our financial condition, liquidity or results of operations.

NOTE 20. NET EARNINGS PER SHARE

The following table is a reconciliation of net earnings attributable to common shares used in our basic and diluted net Earnings Per Share (“EPS”) calculations for thethree and nine months ended September 30, 2024 and 2023. EPS components may not add due to rounding.

The following table is a reconciliation of basic shares outstanding to diluted shares outstanding for thethree and nine months ended September 30, 2024 and 2023 (shares in millions):

Anti-dilutive stock awards excluded from the computation of dilutive EPS for the three and nine months ended September 30, 2024 were 128 and 11,660, respectively. Anti-dilutive stock awards excluded from the computation of dilutive EPS for the three and nine months ended September 30, 2023 were 44,932 and 103,740, respectively.