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Earnings Per Share (Tables) | 3 Months Ended
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Aug. 31, 2025
Earnings Per Share [Abstract] |
Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share | The following table sets forth the reconciliation of the numerator and denominator of basic and diluted earnings per share ("EPS") for the three-month periods ended August 31, 2025 and 2024.
| Three Months Ended |
| August 31, |  | August 31, |
(In thousands, except per share amounts) | 2025 |  | 2024 |
Numerator for earnings per share: |  |  |  |
Net income attributable to RPM International Inc. stockholders | $ | 227,605 |  | $ | 227,692 |
Less: Allocation of earnings and dividends to participating securities |  | (885 | ) |  | (893 | )
Net income available to common shareholders - basic |  | 226,720 |  |  | 226,799 |
Add: Undistributed earnings reallocated to unvested shareholders |  | 3 |  |  | 4 |
Net income available to common shareholders - diluted | $ | 226,723 |  | $ | 226,803 |
Denominator for basic and diluted earnings per share: |  |  |  |
Basic weighted average common shares |  | 127,283 |  |  | 127,691 |
Average diluted options and awards |  | 667 |  |  | 729 |
Total shares for diluted earnings per share (1) |  | 127,950 |  |  | 128,420 |
Earnings Per Share of Common Stock Attributable to |  |  |  |
RPM International Inc. Stockholders: |  |  |  |
Basic Earnings Per Share of Common Stock | $ | 1.78 |  | $ | 1.78 |
Method used to calculate basic earnings per share | Two-class |  | Two-class |
Diluted Earnings Per Share of Common Stock | $ | 1.77 |  | $ | 1.77 |
Method used to calculate diluted earnings per share | Two-class |  | Two-class |
(1) The dilutive effect of performance-based restricted stock units is included when they have met minimum performance thresholds. The dilutive effect of SARs includes all outstanding awards except awards that are considered antidilutive. SARs are antidilutive when the exercise price exceeds the average market price of the Company’s common shares during the periods presented. For the three months ended August 31, 2025 and 2024, approximately 400,000 and 180,000 shares of stock, respectively, granted under stock-based compensation plans were excluded from the calculation of diluted EPS, as the effect would have been anti-dilutive.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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