| Schedule of Earnings Per Share, Basic and Diluted |
The following table summarizes earnings per share calculations: | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended
September 30, | | Nine Months Ended
September 30, | | 2026 | | 2025 | | 2026 | | 2025 | | Basic earnings per common share | | | | | | | | | Net income (loss) attributable to Quaker Chemical Corporation | $ | 29,977 | | | $ | 30,469 | | | $ | 76,481 | | | $ | (23,189) | | | Less: income (loss) allocated to participating securities | 11 | | | 30 | | | 31 | | | (44) | | | Net income (loss) available to common shareholders | $ | 29,966 | | | $ | 30,439 | | | $ | 76,450 | | | $ | (23,145) | | | Basic weighted average common shares outstanding | 17,196,928 | | 17,363,947 | | 17,273,816 | | 17,524,377 | | Basic earnings (loss) per common share | $ | 1.74 | | | $ | 1.75 | | | $ | 4.43 | | | $ | (1.32) | | | | | | | | | | | Diluted earnings per common share | | | | | | | | | Net income (loss) attributable to Quaker Chemical Corporation | $ | 29,977 | | | $ | 30,469 | | | $ | 76,481 | | | $ | (23,189) | | | Less: income (loss) allocated to participating securities | 11 | | | 30 | | | 31 | | | (44) | | | Net income (loss) available to common shareholders | $ | 29,966 | | | $ | 30,439 | | | $ | 76,450 | | | $ | (23,145) | | | Basic weighted average common shares outstanding | 17,196,928 | | 17,363,947 | | 17,273,816 | | 17,524,377 | | Effect of dilutive securities | 148,401 | | 57,143 | | 89,700 | | 21,289 | | Diluted weighted average common shares outstanding | 17,345,329 | | 17,421,090 | | 17,363,516 | | 17,545,666 | | Diluted earnings (loss) per common share | $ | 1.73 | | | $ | 1.75 | | | $ | 4.40 | | | $ | (1.32) | |
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