Intuitive (ISRG) 4: LOEB GARY bought 1,526 shares of Common Stock at $N/A on 20… (Feb 27, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-02-26 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: INTUITIVE SURGICAL INC (ISRG) CIK: 0001035267 --- Reporting Owner --- Name: LOEB GARY CIK: 0001561733 Role: Officer (EVP & Chief Legal and Complian) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-02-26 | Code: M (Exercise of derivative) Shares: +1,526 | Price: $0.00 Shares Owned After: 5,230 | Ownership: D (Direct) Footnotes: [F1] RSUs vest 25% per year over a four year period, commencing on the first anniversary of the grant date. RSUs convert into common stock on the vest date on a one-for-one basis. 25% of the shares have been released and a portion of the shares were held back to cover the statutory tax withholding requirements. The net shares were deposited into the holders account. [Transaction #2] Security: Common Stock Date: 2026-02-26 | Code: F (Payment of exercise/tax) Shares: -757 | Price: $506.17 Total Value: $383,170.69 Shares Owned After: 4,473 | Ownership: D (Direct) Footnotes: [F1] RSUs vest 25% per year over a four year period, commencing on the first anniversary of the grant date. RSUs convert into common stock on the vest date on a one-for-one basis. 25% of the shares have been released and a portion of the shares were held back to cover the statutory tax withholding requirements. The net shares were deposited into the holders account. [Transaction #3] Security: Common Stock Date: 2026-02-26 | Code: M (Exercise of derivative) Shares: +916 | Price: $0.00 Shares Owned After: 5,389 | Ownership: D (Direct) Footnotes: [F1] RSUs vest 25% per year over a four year period, commencing on the first anniversary of the grant date. RSUs convert into common stock on the vest date on a one-for-one basis. 25% of the shares have been released and a portion of the shares were held back to cover the statutory tax withholding requirements. The net shares were deposited into the holders account. [Transaction #4] Security: Common Stock Date: 2026-02-26 | Code: F (Payment of exercise/tax) Shares: -455 | Price: $506.17 Total Value: $230,307.35 Shares Owned After: 4,934 | Ownership: D (Direct) Footnotes: [F1] RSUs vest 25% per year over a four year period, commencing on the first anniversary of the grant date. RSUs convert into common stock on the vest date on a one-for-one basis. 25% of the shares have been released and a portion of the shares were held back to cover the statutory tax withholding requirements. The net shares were deposited into the holders account. --- Derivative Transactions --- [Transaction #1] Security: Performance Stock Units - 2-28-2023 Date: 2026-02-26 | Code: A (Grant or award) Shares: +1,050 | Price: $0.00 Shares Owned After: 3,148 | Ownership: D (Direct) Footnotes: [F2] Represents performance stock units ("PSUs") initially granted to the Reporting Person on February 28, 2023 subject to achievement of certain performance metrics. The performance criteria for the PSUs reported herein have been achieved, as determined by the Compensation Committee of the Issuer. The PSUs reported herein vest on February 28, 2026, the third anniversary of the grant date, subject to Reporting Person's continuous service to the Issuer through each such vesting date. [F2] Represents performance stock units ("PSUs") initially granted to the Reporting Person on February 28, 2023 subject to achievement of certain performance metrics. The performance criteria for the PSUs reported herein have been achieved, as determined by the Compensation Committee of the Issuer. The PSUs reported herein vest on February 28, 2026, the third anniversary of the grant date, subject to Reporting Person's continuous service to the Issuer through each such vesting date. [Transaction #2] Security: Restricted Stock Units - 2-26-2024 Date: 2026-02-26 | Code: M (Exercise of derivative) Shares: -1,526 | Price: $0.00 Shares Owned After: 3,052 | Ownership: D (Direct) Footnotes: [F3] Each RSU granted represents a contingent right to receive one share of Intuitive Surgical common stock. The grant vests 25% on the first anniversary of the date of grant and annually thereafter, over a four year period. [F3] Each RSU granted represents a contingent right to receive one share of Intuitive Surgical common stock. The grant vests 25% on the first anniversary of the date of grant and annually thereafter, over a four year period. [Transaction #3] Security: Restricted Stock Units - 2-26-2025 Date: 2026-02-26 | Code: M (Exercise of derivative) Shares: -916 | Price: $0.00 Shares Owned After: 2,746 | Ownership: D (Direct) Footnotes: [F3] Each RSU granted represents a contingent right to receive one share of Intuitive Surgical common stock. The grant vests 25% on the first anniversary of the date of grant and annually thereafter, over a four year period. [F3] Each RSU granted represents a contingent right to receive one share of Intuitive Surgical common stock. The grant vests 25% on the first anniversary of the date of grant and annually thereafter, over a four year period. [Transaction #4] Security: Restricted Stock Units - 2-26-2026 Date: 2026-02-26 | Code: A (Grant or award) Shares: +3,584 | Price: $0.00 Shares Owned After: 3,584 | Ownership: D (Direct) Footnotes: [F3] Each RSU granted represents a contingent right to receive one share of Intuitive Surgical common stock. The grant vests 25% on the first anniversary of the date of grant and annually thereafter, over a four year period. [F3] Each RSU granted represents a contingent right to receive one share of Intuitive Surgical common stock. The grant vests 25% on the first anniversary of the date of grant and annually thereafter, over a four year period. --- Footnotes (Complete Index) --- F1: RSUs vest 25% per year over a four year period, commencing on the first anniversary of the grant date. RSUs convert into common stock on the vest date on a one-for-one basis. 25% of the shares have been released and a portion of the shares were held back to cover the statutory tax withholding requirements. The net shares were deposited into the holders account. F2: Represents performance stock units ("PSUs") initially granted to the Reporting Person on February 28, 2023 subject to achievement of certain performance metrics. The performance criteria for the PSUs reported herein have been achieved, as determined by the Compensation Committee of the Issuer. The PSUs reported herein vest on February 28, 2026, the third anniversary of the grant date, subject to Reporting Person's continuous service to the Issuer through each such vesting date. F3: Each RSU granted represents a contingent right to receive one share of Intuitive Surgical common stock. The grant vests 25% on the first anniversary of the date of grant and annually thereafter, over a four year period. --- Signature --- /s/ By: Stephanie Lim-Ignacio For: Loeb, Gary Howard (2026-02-27)