GUTHART GARY S 4

What Happened

• Gary S. Guthart, a director of Intuitive Surgical (ISRG), had equity awards convert/vest and shares withheld to cover tax obligations. The filing shows conversion/exercise-type transactions totaling 8,393 derivative shares and an award/vesting of 8,778 RSU/PSU-related shares. To satisfy tax withholding, 4,163 shares were disposed at $506.17 each, generating proceeds of $2,107,186.

Key Details

• Transaction date: February 26, 2026; Filing date: February 27, 2026 (timely).
• Dispositions for tax withholding: 2,460 shares × $506.17 = $1,245,178 and 1,703 shares × $506.17 = $862,008 (total $2,107,186).
• Conversions/exercises reported: 4,960 and 3,433 shares (reported as exercises/conversions of derivatives), plus a grant/award of 8,778 shares (RSU/PSU-related).
• Transaction codes: M = exercise/conversion of derivative; F = payment of exercise price or tax liability (shares withheld/sold to cover taxes); A = grant/award.
• Shares owned after the transactions are not specified in the provided filing excerpt.
• Footnotes: F1/F3 describe RSU vesting schedule (25%/year over 4 years; statutory withholding applied; net shares deposited). F2 indicates PSUs granted 2/28/2023 met performance goals and vest on the third anniversary (2/28/2026).

Context

• These appear to be routine compensation-related vesting/conversion events rather than open-market investment purchases: some awarded/converted shares were withheld/sold to cover tax liabilities (a common cashless/withholding practice).
• No late filing was indicated in the provided data. No 10% owner or gift transactions are involved.