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 June 30, | | Six Months Ended June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | | Numerator: | | | | | | | | | Net income attributable to Intuitive Surgical, Inc. | $ | 818.1 | | | $ | 658.4 | | | $ | 1,639.6 | | | $ | 1,356.8 | | | Denominator: | | | | | | | | | Weighted-average shares outstanding used in basic calculation | 354.1 | | | 358.5 | | | 354.5 | | | 358.0 | | | Add: dilutive effect of potential common shares | 3.2 | | | 5.6 | | | 4.0 | | | 6.4 | | | Weighted-average shares outstanding used in diluted calculation | 357.3 | | | 364.1 | | | 358.5 | | | 364.4 | | | Net income per share attributable to Intuitive Surgical, Inc.: | | | | | | | | | Basic | $ | 2.31 | | | $ | 1.84 | | | $ | 4.63 | | | $ | 3.79 | | | Diluted | $ | 2.29 | | | $ | 1.81 | | | $ | 4.57 | | | $ | 3.72 | |
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