The following table presents the computation of basic and diluted net income per share attributable to Intuitive Surgical, Inc. (in millions, except per share amounts): | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended September 30, | | Nine Months Ended September 30, | | 2026 | | 2025 | | 2026 | | 2025 | | Numerator: | | | | | | | | | Net income attributable to Intuitive Surgical, Inc. | $ | 522.8 | | | $ | 704.4 | | | $ | 2,162.4 | | | $ | 2,061.2 | | | Denominator: | | | | | | | | | Weighted-average shares outstanding used in basic calculation | 349.0 | | | 356.6 | | | 352.6 | | | 357.5 | | | Add: dilutive effect of potential common shares | 2.6 | | | 5.2 | | | 3.6 | | | 6.0 | | | Weighted-average shares outstanding used in diluted calculation | 351.6 | | | 361.8 | | | 356.2 | | | 363.5 | | | Net income per share attributable to Intuitive Surgical, Inc.: | | | | | | | | | Basic | $ | 1.50 | | | $ | 1.98 | | | $ | 6.13 | | | $ | 5.77 | | | Diluted | $ | 1.49 | | | $ | 1.95 | | | $ | 6.07 | | | $ | 5.67 | |
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