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Summary of Significant Accounting Policies (Policies) | 12 Months Ended
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May 31, 2025
Accounting Policies [Abstract] |
Consolidation, Noncontrolling Interests and Basis of Presentation | 1) Consolidation, Noncontrolling Interests and Basis of Presentation The accompanying Consolidated Financial Statements have been prepared in accordance with GAAP and the instructions to Form 10-K. In our opinion, all adjustments (consisting of normal, recurring accruals) considered necessary for fair presentation have been included for the periods ended May 31, 2025, 2024, and 2023. Certain prior period amounts have been reclassified to conform with the current year presentation which includes specified disclosures in Note G, "Borrowings," Note H, "Income Taxes," and Note R, "Segment Information." These reclassifications have no impact on previously reported financial position, net income or cash flows. Our financial statements include all of our majority-owned subsidiaries. We account for our investments in less-than-majority-owned joint ventures, for which we have the ability to exercise significant influence, under the equity method. Effects of transactions between related companies are eliminated in consolidation. Noncontrolling interests are presented in our Consolidated Financial Statements as if parent company investors (controlling interests) and other minority investors (noncontrolling interests) in partially owned subsidiaries have similar economic interests in a single entity. As a result, investments in noncontrolling interests are reported as equity in our Consolidated Financial Statements. Additionally, our Consolidated Financial Statements include 100% of a controlled subsidiary’s earnings, rather than only our share. Transactions between the parent company and noncontrolling interests are reported in equity as transactions between stockholders, provided that these transactions do not create a change in control. Our business is dependent on external weather factors. Historically, we have experienced strong sales and net income in our first, second and fourth fiscal quarters comprising the three-month periods ending August 31, November 30 and May 31, respectively, with seasonally lower performance in our third fiscal quarter (December through February).
Use of Estimates | 2) Use of Estimates The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Acquisitions | 3) Acquisitions We account for business combinations and asset acquisitions using the acquisition method of accounting and, accordingly, the assets and liabilities of the acquired entities are recorded at their estimated fair values at the acquisition date.
Foreign Currency | 4) Foreign Currency The functional currency for each of our foreign subsidiaries is its principal operating currency. Accordingly, for the periods presented, assets and liabilities have been translated using exchange rates at year end, while income and expense for the periods have been translated using a weighted-average exchange rate. The resulting translation adjustments have been recorded in accumulated other comprehensive income (loss), a component of stockholders’ equity, and will be included in net earnings only upon the sale or liquidation of the underlying foreign investment, neither of which is contemplated at this time. For the periods ended May 31, 2025, 2024 and 2023, transactional losses approximated $0.2 million, $6.6 million and $8.9 million, respectively.
Cash and Cash Equivalents | 5) Cash and Cash Equivalents We consider all highly liquid debt instruments purchased with a maturity of three months or less to be cash equivalents. We do not believe we are exposed to any significant credit risk on cash and cash equivalents. The carrying amounts of cash and cash equivalents approximate fair value.
Property, Plant & Equipment | 6) Property, Plant & Equipment
May 31, |  | 2025 |  |  | 2024 |
(In thousands) |  |  |  |  |  |
Land |  | $ | 96,259 |  |  | $ | 93,842 |
Buildings and leasehold improvements |  |  | 754,088 |  |  |  | 674,580 |
Machinery and equipment |  |  | 1,888,026 |  |  |  | 1,747,425 |
Total property, plant and equipment, at cost |  |  | 2,738,373 |  |  |  | 2,515,847 |
Less: allowance for depreciation and amortization |  |  | 1,264,974 |  |  |  | 1,184,784 |
Property, plant and equipment, net |  | $ | 1,473,399 |  |  | $ | 1,331,063 |
We review long-lived assets for impairment when circumstances indicate that the carrying values of these assets may not be recoverable. For assets that are to be held and used, an impairment charge is recognized when the estimated undiscounted future cash flows associated with the asset or group of assets are less than their carrying value. If impairment exists, an adjustment is made to write the asset down to its fair value, and a loss is recorded for the difference between the carrying value and the fair value. Fair values are determined based on quoted market values, discounted cash flows, internal appraisals or external appraisals, as applicable. Assets to be disposed of are carried at the lower of their carrying value or estimated net realizable value. Depreciation is computed primarily using the straight-line method over the following ranges of useful lives:
Buildings and leasehold improvements |  | 1 to 50 years
Machinery and equipment |  | 1 to 40 years
Total deprecia tion expense for each fiscal period includes the charges to income that result from the amortization of assets recorded under finance leases. For the periods ended May 31, 2025, 2024 and 2023, we recorded depreciation expense of $146.3 million, $129.8 million, and $108.4 million, respectively.
Revenue Recognition | 7) Revenue Recognition Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. The majority of our revenue is recognized at a point in time. However, we also record revenues generated under construction contracts, mainly in connection with the installation of specialized roofing and flooring systems and related services. For certain polymer flooring installation projects, we account for our revenue using the output method, as we consider square footage of completed flooring to be the best measure of progress toward the complete satisfaction of the performance obligation. In contrast, for certain of our roofing installation projects, we account for our revenue using the input method, as that method is the best measure of performance as it considers costs incurred in relation to total expected project costs, which essentially represents the transfer of control for roofing systems to the customer. In general, for our construction contracts, we record contract revenues and related costs as our contracts progress on an over-time model.
Shipping Costs | 8) Shipping Costs We identify shipping and handling costs as costs paid to third-party shippers for transporting products to customers, and we include these costs in cost of sales in our Consolidated Statements of Income.
Allowance for Credit Losses | 9) Allowance for Credit Losses Our primary allowance for credit losses is the allowance for doubtful accounts. The allowance for doubtful accounts reduces the trade accounts receivable balance to the estimated net realizable value equal to the amount that is expected to be collected. The allowance is established using assessments of current creditworthiness of customers, historical collection experience, the aging of receivables and other currently available evidence. Trade accounts receivable balances are written-off against the allowance if a final determination of uncollectibility is made. All provisions for allowances for doubtful collection of accounts are included in SG&A expenses. Actual collections of trade receivables could differ from our estimates due to changes in future economic or industry conditions or specific customers' financial conditions.
Inventories | 10) Inventories Inventories are stated at the lower of cost or net realizable value, cost being determined on a first-in, first-out (FIFO) basis and net realizable value being determined on the basis of replacement cost. Inventory costs include raw materials, labor and manufacturing overhead. We review the net realizable value of our inventory in detail on an on-going basis, with consideration given to various factors, which include our estimated reserves for excess, obsolete, slow-moving or distressed inventories. If actual market conditions differ from our projections, and our estimates prove to be inaccurate, write-downs of inventory values and adjustments to cost of sales may be required. Historically, our inventory reserves have approximated actual experience. Inventories were composed of the following major classes:
May 31, |  | 2025 |  |  | 2024 |
(In thousands) |  |  |  |  |  |
Raw materials and supplies |  | $ | 387,785 |  |  | $ | 354,428 |
Finished goods |  |  | 648,690 |  |  |  | 602,037 |
Total Inventory |  | $ | 1,036,475 |  |  | $ | 956,465 |
Goodwill and Other Intangible Assets | 11) Goodwill and Other Intangible Assets We account for goodwill and other intangible assets in accordance with the provisions of ASC 350 and account for business combinations using the acquisition method of accounting and, accordingly, the assets and liabilities of the entities acquired are recorded at their estimated fair values at the acquisition date. Goodwill Goodwill represents the excess of the purchase price paid over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets. Goodwill is assigned to reporting units that are expected to benefit from the synergies of the business combination as of the acquisition date. Once goodwill has been allocated to the reporting units, it no longer retains its identification with a particular acquisition and becomes identified with the reporting unit in its entirety. Accordingly, the fair value of the reporting unit as a whole is available to support the recoverability of its goodwill. We evaluate our reporting units when changes in our operating structure occur, and if necessary, reassign goodwill using a relative fair value allocation approach. We test our goodwill balances at least annually, or more frequently as impairment indicators arise, at the reporting unit level. Our annual impairment assessment date has been designated as the first day of our fourth fiscal quarter. Our reporting units have been identified at the component level, which is one level below our operating segments. We follow the FASB guidance found in ASC 350 that simplifies how an entity tests goodwill for impairment. It provides an option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, and whether it is necessary to perform a quantitative goodwill impairment test. We assess qualitative factors in each of our reporting units that carry goodwill. We assess these qualitative factors to determine whether it is necessary to perform the quantitative goodwill impairment test. The quantitative process is required only if we conclude that it is more likely than not that a reporting unit’s fair value is less than its carrying amount. However, we have an unconditional option to bypass a qualitative assessment and proceed directly to performing the quantitative analysis. We applied the quantitative process during our annual goodwill impairment assessments performed during the fourth quarters of fiscal 2025, 2024 and 2023. In applying the quantitative test, we compare the fair value of a reporting unit to its carrying value. If the calculated fair value is less than the current carrying value, then impairment of the reporting unit exists. Calculating the fair value of a reporting unit requires our use of estimates and assumptions. We use significant judgment in determining the most appropriate method to establish the fair value of a reporting unit. We estimate the fair value of a reporting unit by employing various valuation techniques, depending on the availability and reliability of comparable market value indicators, and employ methods and assumptions that include the application of third-party market value indicators and the computation of discounted future cash flows determined from estimated cashflow adjustments to a reporting unit’s annual projected EBITDA, or adjusted EBITDA, which adjusts for one-off items impacting revenues and/or expenses that are not considered by management to be indicative of ongoing operations. Our fair value estimations may include a combination of value indications from both the market and income approaches, as the income approach considers the future cash flows from a reporting unit’s ongoing operations as a going concern, while the market approach considers the current financial environment in establishing fair value. In applying the market approach, we use market multiples derived from a set of similar companies. In applying the income approach, we evaluate discounted future cash flows determined from estimated cashflow adjustments to a reporting unit’s projected EBITDA. Under this approach, we calculate the fair value of a reporting unit based on the present value of estimated future cash flows. In applying the discounted cash flow methodology utilized in the income approach, we rely on a number of factors, including future business plans, actual and forecasted operating results, and market data. The significant assumptions employed under this method include discount rates; revenue growth rates, including assumed terminal growth rates; and operating margins used to project future cash flows for a reporting unit. The discount rates utilized reflect market-based estimates of capital costs and discount rates adjusted for management’s assessment of a market participant’s view with respect to other risks associated with the projected cash flows of the individual reporting unit. Our estimates are based upon assumptions we believe to be reasonable, but which by nature are uncertain and unpredictable. We believe we incorporate ample sensitivity ranges into our analysis of goodwill impairment testing for a reporting unit, such that actual experience would need to be materially out of the range of expected assumptions in order for an impairment to remain undetected. Refer to Note C, "Goodwill and Other Intangible Assets," to the Consolidated Financial Statements for additional information regarding our conclusions on annual goodwill impairment tests, changes in composition of our reporting units, and impairment charges recorded. Indefinite-Lived Intangible Assets Additionally, we test all indefinite-lived intangible assets for impairment at least annually during our fiscal fourth quarter. We follow the guidance provided by ASC 350 that simplifies how an entity tests indefinite-lived intangible assets for impairment. It provides an option to first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount before applying traditional quantitative tests. We applied quantitative processes during our annual indefinite-lived intangible asset impairment assessments performed during the fourth quarters of fiscal 2025, 2024 and 2023. The annual impairment assessment involves estimating the fair value of each indefinite-lived asset and comparing it with its carrying amount. If the carrying amount of the intangible asset exceeds its fair value, we record an impairment loss equal to the difference. Calculating the fair value of the indefinite-lived assets requires our significant use of estimates and assumptions. We estimate the fair values of our intangible assets by applying a relief-from-royalty calculation, which includes discounted future cash flows related to each of our intangible asset’s projected revenues. In applying this methodology, we rely on a number of factors, including actual and forecasted revenues and market data. Refer to Note C, "Goodwill and Other Intangible Assets," to the Consolidated Financial Statements for further discussion and results of our annual impairment test of our indefinite-lived intangible assets. Definite-Lived Intangible Assets In accordance with the guidance provided by ASC 360, "Property, Plant, and Equipment," we assess identifiable, amortizable intangible assets for impairment whenever events or changes in facts and circumstances indicate the possibility that the carrying values of these assets may not be recoverable over their estimated remaining useful lives. Factors considered important in our assessment, which might trigger an impairment evaluation, include the following: • significant under-performance relative to historical or projected future operating results; • significant changes in the manner of our use of the acquired assets; • significant changes in the strategy for our overall business; and • significant negative industry or economic trends. Measuring a potential impairment of amortizable intangible assets requires the use of various estimates and assumptions, including the determination of which cash flows are directly related to the assets being evaluated, the respective useful lives over which those cash flows will occur and potential residual values, if any. If we determine that the carrying values of these assets may not be recoverable based upon the existence of one or more of the above-described indicators or other factors, any impairment amounts would be measured based on the projected net cash flows expected from these assets, including any net cash flows related to eventual disposition activities. The determination of any impairment losses would be based on the best information available, including internal estimates of discounted cash flows; market participant assumptions; quoted market prices, when available; and independent appraisals, as appropriate, to determine fair values. Cash flow estimates would be based on our historical experience and our internal business plans, with appropriate discount rates applied. We did not record any impairment charges related to our definite-lived intangible assets during fiscal 2025, 2024 and 2023.
Advertising Costs | 12) Advertising Costs Advertising costs are charged to operations w hen incurred and are included in SG&A expenses. For the years ended May 31, 2025, 2024 and 2023, advertising costs were $57.0 million, $64.7 million and $62.0 million, respectively.
Research and Development | 13) Research and Development Research and development costs are charged to operations when incurred and are included in SG&A expenses. The amounts charged to expense for the years ended May 31, 2025, 2024 and 2023 were $94.7 million, $92.2 million and $86.6 million, respectively.
Stock-Based Compensation | 14) Stock-Based Compensation Stock-based compensation represents the cost related to stock-based awards granted to our associates and directors, which may include restricted stock and stock appreciation rights (“SARs”). We measure stock-based compensation cost at the date of grant, based on the estimated fair value of the award. We recognize the cost as expense on a straight-line basis (net of estimated forfeitures) over the related vesting period. Refer to Note J, “Stock-Based Compensation,” to the Consolidated Financial Statements for further information.
Investment (Income), Net | 15) Investment (Income), Net Investment (income), net, consists of the following components:
Year Ended May 31, |  | 2025 |  |  | 2024 |  |  | 2023 |
(In thousands) |  |  |  |  |  |  |  |  |
Interest (income) |  | $ | (13,335 | ) |  | $ | (20,947 | ) |  | $ | (9,250 | )
Net (gain) loss on marketable securities |  |  | (4,997 | ) |  |  | (19,914 | ) |  |  | 2,086 |
Dividend (income) |  |  | (5,767 | ) |  |  | (4,113 | ) |  |  | (2,584 | )
Investment (income), net |  | $ | (24,099 | ) |  | $ | (44,974 | ) |  | $ | (9,748 | )
Net (Gain) Loss on Marketable Securities
Year Ended May 31, |  | 2025 |  |  | 2024 |  |  | 2023 |
(In thousands) |  |  |  |  |  |  |  |  |
Unrealized losses (gains) on marketable equity securities |  | $ | 5,505 |  |  | $ | (19,703 | ) |  | $ | 2,667 |
Realized (gains) on marketable equity securities |  |  | (10,625 | ) |  |  | (290 | ) |  |  | (551 | )
Realized losses (gains) on available-for-sale debt securities |  |  | 123 |  |  |  | 79 |  |  |  | (30 | )
Net (gain) loss on marketable securities |  | $ | (4,997 | ) |  | $ | (19,914 | ) |  | $ | 2,086 |
Other (Income) Expense, Net | 16) Other (Income) Expense, Net Other (income) expense, net, consists of the following components:
Year Ended May 31, |  | 2025 |  |  | 2024 |  |  | 2023 |
(In thousands) |  |  |  |  |  |  |  |  |
Pension non-service costs |  | $ | 200 |  |  | $ | 11,046 |  |  | $ | 10,381 |
Other |  |  | (1,794 | ) |  |  | (882 | ) |  |  | (604 | )
Other (income) expense, net |  | $ | (1,594 | ) |  | $ | 10,164 |  |  | $ | 9,777 |
Income Taxes | 17) Income Taxes The provision for income taxes is calculated using the asset and liability method. Under the asset and liability method, deferred income taxes are recognized for the tax effect of temporary differences between the financial statement carrying amount of assets and liabilities and the amounts used for income tax purposes and for certain changes in valuation allowances. Valuation allowances are recorded to reduce certain deferred tax assets when, in our estimation, it is more likely than not that a tax benefit will not be realized.
Earnings Per Share of Common Stock | 18) Earnings Per Share of Common Stock Earnings per share (EPS) is computed using both the treasury stock and two-class method, as our unvested share-based payment awards contain rights to receive non-forfeitable dividends and, therefore, are considered participating securities. We calculate both Basic and Diluted EPS under each method and compare the results, reporting the method that is most dilutive. Basic EPS of common stock is computed by dividing net income by the weighted-average number of shares of common stock outstanding for the period. Diluted EPS of common stock is computed on the basis of the weighted-average number of shares of common stock, plus the effect of dilutive potential shares of common stock outstanding during the period using the treasury stock method. Dilutive potential shares of common stock include outstanding SARS and restricted stock awards. The treasury stock method also assumes that we use the proceeds from the hypothetical exercise of the stock compensation awards to repurchase common stock at the average market price during the period. The two-class method determines EPS for each class of common stock and participating securities according to dividends and dividend equivalents and their respective participation rights in undistributed earnings. See Note L, “Earnings Per Share,” to the Consolidated Financial Statements for additional information.
Supply Chain Financing | 19) Supply Chain Financing During the fourth quarter of fiscal 2024, we began offering a supplier finance program with a financial institution, in which suppliers may elect to receive early payment from the financial institution on invoices issued to RPM. The financial institution enters into separate arrangements with suppliers directly to participate in the program. We do not determine the terms or conditions of such arrangements or participate in the transactions between the suppliers and the financial institution. There are no assets pledged by RPM under the supplier finance program. Our responsibility is limited to making payments to the financial institution based on payment terms originally negotiated with the suppliers, regardless of whether the financial institution pays the supplier in advance of the original due date. The range of payment terms RPM negotiates with suppliers are consistent, regardless of whether a supplier participates in the supply chain finance program. RPM or the financial institution may terminate participation in the program upon at least 30 days’ notice. The rollforward of outstanding obligations confirmed as valid under the supplier finance program is as follows:
Year Ended May 31, | 2025 |
(In thousands) |  |
Beginning Balance | $ | 32,899 |
Invoices confirmed during the year |  | 139,571 |
Confirmed invoices paid during the year |  | (133,483 | )
Ending Balance | $ | 38,987 |
Recent Accounting Pronouncements | 20) Recent Accounting Pronouncements New Pronouncements Adopted In November 2023, the FASB issued Accounting Standard Update ("ASU") 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures," which expands disclosures about a public business entity's reportable segments and provides for more detailed information about a reportable segment's expenses. This guidance is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, and requires retrospective application to all prior periods presented in the financial statements. We adopted the new standard effective May 31, 2025. Adoption of this ASU resulted in additional disclosure, but did no t impact our consolidated balance sheet, results of operations or cash flows. Refer to Note R, “Segment Information,” to the Consolidated Financial Statements. In September 2022, the FASB issued ASU 2022-04, "Liabilities - Supplier Finance Programs (Subtopic 405-50)," which is intended to establish disclosures that enhance the transparency of a supplier finance program used by an entity in connection with the purchase of goods and services. This guidance requires annual and interim disclosure of the key terms of outstanding supplier finance programs, the amount outstanding under such programs including where they are recorded on the balance sheet, and a roll-forward of the related obligations. The new standard does not affect the recognition, measurement, or financial statement presentation of the supplier finance program obligations. These amendments are effective for fiscal years beginning after December 15, 2022, except for the amendment on roll-forward information, which is effective for fiscal years beginning after December 15, 2023. We adopted the new standard on June 1, 2023, on a retrospective basis other than the roll-forward guidance, which we adopted on a prospective basis beginning with our fiscal 2025 annual financial statements. As of adoption on June 1, 2023, we did no t have any material supplier finance program obligations; however, we began such an arrangement during the fourth quarter of fiscal 2024. Refer to Note A(19), “Summary of Significant Accounting Policies - Supply Chain Financing,” to the Consolidated Financial Statements. New Pronouncements Issued In November 2024, the FASB issued ASU 2024-03, " Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40)." The standard provides guidance to expand disclosures related to the disaggregation of income statement expenses. The standard requires, in the notes to the financial statements, disclosure of specified information about certain costs and expenses which includes purchases of inventory, employee compensation, depreciation, and intangible asset amortization included in each relevant expense caption. This guidance is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, on a retrospective or prospective basis, with early adoption permitted. We are currently evaluating this ASU to determine its impact on our disclosures. In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures," which requires a public business entity to disclose specific categories in its annual effective tax rate reconciliation and disaggregated information about significant reconciling items by jurisdiction and by nature. The ASU also requires entities to disclose their income tax payments (net of refunds) to international, federal, and state and local jurisdictions. The guidance makes several other changes to income tax disclosure requirements. This guidance is effective for fiscal years beginning after December 15, 2024, on a retrospective or prospective basis. Early adoption is permitted. We are currently evaluating this ASU to determine its impact on our disclosures.
Subsequent Events | 21) Subsequent Events Business Segment Information We report the results of our operations through four reportable segments: CPG, PCG, Consumer and SPG reportable segments. Effective June 1, 2025, we realigned certain businesses and management structures to recognize how we allocate resources and analyze the operating performance of our operating segments. This realignment did not change our reportable segments at May 31, 2025. Rather, our periodic filings, beginning with our first quarter ending August 31, 2025, will include historical segment results reclassified to reflect the effect of this realignment under three reportable segments, including: CPG, PCG and Consumer. Additionally, this change in the composition of our segments will not have any significant impact on our reporting units. Business Acquisition Subsequent to the end of our fiscal year 2025, we acquired Ready Seal Inc. ("Ready Seal"), a Texas-based manufacturer of premium exterior wood stains, which was announced on June 17, 2025. In the calendar year 2024, Ready Seal generated net sales of approximately $45 million. Ready Seal will be included in our Consumer reportable segment.

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