| Schedule of Stockholders Equity |
The following tables present the changes in stockholders’ equity (in millions): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2026 | | Common Stock | | Additional Paid-In Capital | | Retained Earnings | | Accumulated Other Comprehensive Income (Loss) | | Total Intuitive Surgical, Inc. Stockholders’ Equity | | Noncontrolling Interest in Joint Venture | | Total Stockholders’ Equity | | Shares | | Amount | | | | | | | | Beginning balance | 354.4 | | | $ | 0.4 | | | $ | 11,059.9 | | | $ | 6,397.7 | | | $ | 16.5 | | | $ | 17,474.5 | | | $ | 122.7 | | | $ | 17,597.2 | | Issuance of common stock | — | | | — | | | — | | | — | | | — | | | — | | | — | | | — | | | Issuance of common stock through employee stock plans | 0.4 | | | — | | | 65.6 | | | — | | | — | | | 65.6 | | | — | | | 65.6 | | | Shares withheld related to net share settlement of equity awards | — | | | — | | | (0.5) | | | (12.6) | | | — | | | (13.1) | | | — | | | (13.1) | | | Share-based compensation expense related to employee stock plans | — | | | — | | | 213.0 | | | — | | | — | | | 213.0 | | | — | | | 213.0 | | | Repurchase and retirement of common stock | (0.9) | | | — | | | (13.0) | | | (366.0) | | | — | | | (379.0) | | | — | | | (379.0) | | | Net income attributable to Intuitive Surgical, Inc. | — | | | — | | | — | | | 818.1 | | | — | | | 818.1 | | | — | | | 818.1 | | | Other comprehensive income (loss) | — | | | — | | | — | | | — | | | (10.7) | | | (10.7) | | | 1.5 | | | (9.2) | | | | | | | | | | | | | | | | | | | Net income attributable to noncontrolling interest in joint venture | — | | | — | | | — | | | — | | | — | | | — | | | 5.1 | | | 5.1 | | | Ending balance | 353.9 | | | $ | 0.4 | | | $ | 11,325.0 | | | $ | 6,837.2 | | | $ | 5.8 | | | $ | 18,168.4 | | | $ | 129.3 | | | $ | 18,297.7 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2025 | | Common Stock | | Additional Paid-In Capital | | Retained Earnings | | Accumulated Other Comprehensive Income (Loss) | | Total Intuitive Surgical, Inc. Stockholders’ Equity | | Noncontrolling Interest in Joint Venture | | Total Stockholders’ Equity | | Shares | | Amount | | | | | | | Beginning balance | 358.4 | | | $ | 0.4 | | | $ | 9,993.7 | | | $ | 7,139.4 | | | $ | (27.1) | | | $ | 17,106.4 | | | $ | 101.3 | | | $ | 17,207.7 | | | | | | | | | | | | | | | | | | | Issuance of common stock through employee stock plans | 0.4 | | | — | | | 49.4 | | | — | | | — | | | 49.4 | | | — | | | 49.4 | | | Shares withheld related to net share settlement of equity awards | (0.1) | | | — | | | (0.4) | | | (15.8) | | | — | | | (16.2) | | | — | | | (16.2) | | | Share-based compensation expense related to employee stock plans | — | | | — | | | 198.6 | | | — | | | — | | | 198.6 | | | — | | | 198.6 | | | Repurchase and retirement of common stock | (0.3) | | | — | | | (4.5) | | | (176.5) | | | — | | | (181.0) | | | — | | | (181.0) | | | Net income attributable to Intuitive Surgical, Inc. | — | | | — | | | — | | | 658.4 | | | — | | | 658.4 | | | — | | | 658.4 | | | Other comprehensive income | — | | | — | | | — | | | — | | | 30.1 | | | 30.1 | | | 0.3 | | | 30.4 | | | | | | | | | | | | | | | | | | | Net income attributable to noncontrolling interest in joint venture | — | | | — | | | — | | | — | | | — | | | — | | | 5.8 | | | 5.8 | | Ending balance | 358.4 | | | $ | 0.4 | | | $ | 10,236.8 | | | $ | 7,605.5 | | | $ | 3.0 | | | $ | 17,845.7 | | | $ | 107.4 | | | $ | 17,953.1 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2026 | | Common Stock | | Additional Paid-In Capital | | Retained Earnings | | Accumulated Other Comprehensive Income (Loss) | | Total Intuitive Surgical, Inc. Stockholders’ Equity | | Noncontrolling Interest in Joint Venture | | Total Stockholders’ Equity | | Shares | | Amount | | | | | | | Beginning balance | 355.1 | | | $ | 0.4 | | | $ | 10,768.5 | | | $ | 7,011.8 | | | $ | 43.3 | | | $ | 17,824.0 | | | $ | 117.7 | | | $ | 17,941.7 | | | | | | | | | | | | | | | | | | | Issuance of common stock through employee stock plans | 2.7 | | | — | | | 187.4 | | | — | | | — | | | 187.4 | | | — | | | 187.4 | | | Shares withheld related to net share settlement of equity awards | (0.7) | | | — | | | (10.7) | | | (354.7) | | | — | | | (365.4) | | | — | | | (365.4) | | | Share-based compensation expense related to employee stock plans | — | | | — | | | 426.8 | | | — | | | — | | | 426.8 | | | — | | | 426.8 | | | Repurchase and retirement of common stock | (3.2) | | | — | | | (47.0) | | | (1,459.5) | | | — | | | (1,506.5) | | | — | | | (1,506.5) | | | Net income attributable to Intuitive Surgical, Inc. | — | | | — | | | — | | | 1,639.6 | | | — | | | 1,639.6 | | | — | | | 1,639.6 | | | Other comprehensive income (loss) | — | | | — | | | — | | | — | | | (37.5) | | | (37.5) | | | 2.0 | | | (35.5) | | | | | | | | | | | | | | | | | | | Net income attributable to noncontrolling interest in joint venture | — | | | — | | | — | | | — | | | — | | | — | | | 9.6 | | | 9.6 | | Ending balance | 353.9 | | | $ | 0.4 | | | $ | 11,325.0 | | | $ | 6,837.2 | | | $ | 5.8 | | | $ | 18,168.4 | | | $ | 129.3 | | | $ | 18,297.7 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | Common Stock | | Additional Paid-In Capital | | Retained Earnings | | Accumulated Other Comprehensive Income (Loss) | | Total Intuitive Surgical, Inc. Stockholders’ Equity | | Noncontrolling Interest in Joint Venture | | Total Stockholders’ Equity | | Shares | | Amount | | | | | | | Beginning balance | 356.6 | | | $ | 0.4 | | | $ | 9,681.3 | | | $ | 6,803.3 | | | $ | (51.3) | | | $ | 16,433.7 | | | $ | 95.9 | | | $ | 16,529.6 | | | | | | | | | | | | | | | | | | | Issuance of common stock through employee stock plans | 2.8 | | | — | | | 183.7 | | | — | | | — | | | 183.7 | | | — | | | 183.7 | | | Shares withheld related to net share settlement of equity awards | (0.7) | | | — | | | (8.2) | | | (378.1) | | | — | | | (386.3) | | | — | | | (386.3) | | | Share-based compensation expense related to employee stock plans | — | | | — | | | 384.5 | | | — | | | — | | | 384.5 | | | — | | | 384.5 | | | Repurchase and retirement of common stock | (0.3) | | | — | | | (4.5) | | | (176.5) | | | — | | | (181.0) | | | — | | | (181.0) | | | Net income attributable to Intuitive Surgical, Inc. | — | | | — | | | — | | | 1,356.8 | | | — | | | 1,356.8 | | | — | | | 1,356.8 | | | Other comprehensive income | — | | | — | | | — | | | — | | | 54.3 | | | 54.3 | | | 0.4 | | | 54.7 | | | | | | | | | | | | | | | | | | | Net income attributable to noncontrolling interest in joint venture | — | | | — | | | — | | | — | | | — | | | — | | | 11.1 | | | 11.1 | | Ending balance | 358.4 | | | $ | 0.4 | | | $ | 10,236.8 | | | $ | 7,605.5 | | | $ | 3.0 | | | $ | 17,845.7 | | | $ | 107.4 | | | $ | 17,953.1 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| Components of Accumulated Other Comprehensive Income, Net of Tax |
The components of accumulated other comprehensive income (loss), net of tax, attributable to Intuitive Surgical, Inc. are as follows (in millions): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2026 | | | Gains on Hedge Instruments | | Unrealized Gains (Losses) on Available-for-Sale Securities | | Foreign Currency Translation Gains | | Employee Benefit Plans | | Total | | Beginning balance | $ | 13.9 | | | $ | 6.9 | | | $ | 17.5 | | | $ | (21.8) | | | $ | 16.5 | | | Other comprehensive income (loss) before reclassifications | (3.3) | | | (18.7) | | | 4.7 | | | (0.2) | | | (17.5) | | | Amounts reclassified from accumulated other comprehensive income | 6.4 | | | — | | | — | | | 0.4 | | | 6.8 | | | Net current-period other comprehensive income (loss) | 3.1 | | | (18.7) | | | 4.7 | | | 0.2 | | | (10.7) | | | Ending balance | $ | 17.0 | | | $ | (11.8) | | | $ | 22.2 | | | $ | (21.6) | | | $ | 5.8 | | | | | | | | | | | | | | Three Months Ended June 30, 2025 | | | Gains (Losses) on Hedge Instruments | | Unrealized Gains on Available-for-Sale Securities | | Foreign Currency Translation Gains (Losses) | | Employee Benefit Plans | | Total | | Beginning balance | $ | 0.6 | | | $ | 14.5 | | | $ | (27.7) | | | $ | (14.5) | | | $ | (27.1) | | | Other comprehensive income (loss) before reclassifications | (11.8) | | | 7.1 | | | 37.8 | | | — | | | 33.1 | | | Amounts reclassified from accumulated other comprehensive income (loss) | (3.5) | | | 0.3 | | | — | | | 0.2 | | | (3.0) | | | Net current-period other comprehensive income (loss) | (15.3) | | | 7.4 | | | 37.8 | | | 0.2 | | | 30.1 | | | Ending balance | $ | (14.7) | | | $ | 21.9 | | | $ | 10.1 | | | $ | (14.3) | | | $ | 3.0 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2026 | | Gains on Hedge Instruments | | Unrealized Gains (Losses) on Available-for-Sale Securities | | Foreign Currency Translation Gains | | Employee Benefit Plans | | Total | | Beginning balance | $ | 4.0 | | | $ | 30.5 | | | $ | 29.5 | | | $ | (20.7) | | | $ | 43.3 | | | Other comprehensive income (loss) before reclassifications | 3.1 | | | (42.3) | | | (7.3) | | | (1.7) | | | (48.2) | | | Amounts reclassified from accumulated other comprehensive income | 9.9 | | | — | | | — | | | 0.8 | | | 10.7 | | | Net current-period other comprehensive income (loss) | 13.0 | | | (42.3) | | | (7.3) | | | (0.9) | | | (37.5) | | | Ending balance | $ | 17.0 | | | $ | (11.8) | | | $ | 22.2 | | | $ | (21.6) | | | $ | 5.8 | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | Gains (Losses) on Hedge Instruments | | Unrealized Gains (Losses) on Available-for-Sale Securities | | Foreign Currency Translation Gains (Losses) | | Employee Benefit Plans | | Total | | Beginning balance | $ | 11.0 | | | $ | (14.6) | | | $ | (33.1) | | | $ | (14.6) | | | $ | (51.3) | | | Other comprehensive income (loss) before reclassifications | (27.8) | | | 36.2 | | | 43.2 | | | — | | | 51.6 | | | Amounts reclassified from accumulated other comprehensive income | 2.1 | | | 0.3 | | | — | | | 0.3 | | | 2.7 | | | Net current-period other comprehensive income (loss) | (25.7) | | | 36.5 | | | 43.2 | | | 0.3 | | | 54.3 | | | Ending balance | $ | (14.7) | | | $ | 21.9 | | | $ | 10.1 | | | $ | (14.3) | | | $ | 3.0 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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