Intuitive Surgical Director Gary Guthart Files Form 144 to Sell $12.05M in Common Stock

Executive Summary

On October 23, 2026, a Form 144 notice was filed on behalf of the Guthart Family Trust, associated with Gary S. Guthart, Director (and CEO) of Intuitive Surgical, Inc. ($ISRG). The notice covers the intended sale of 27,139 shares of common stock with an aggregate market value of approximately $12,045,645.15 (representing an indicative price of ~$443.85 per share).

Transaction Details

• Filer: Guthart Family Trust / Gary S. Guthart
• Role: Director
• Broker: Morgan Stanley Smith Barney LLC
• Shares Proposed for Sale: 27,139
• Aggregate Market Value: $12,045,645.15
• Approximate Sale Date: October 23, 2026
• Shares Outstanding: 346,643,718 (~0.008% of total shares outstanding)
• Source of Shares: RSU and PSU vestings between February 15, 2022 and February 28, 2025

Rule 10b5-1 Trading Plan

The proposed sale is executed pursuant to a pre-established Rule 10b5-1 trading plan adopted on May 7, 2026. Previous sales reported under this plan within the prior three months include 10,000 shares sold on August 11, 2026, for gross proceeds of $4,000,000.00.

Market Impact & Significance

While the gross dollar amount is notable at $12.05M, the transaction is structured under a pre-cleared 10b5-1 trading plan adopted months prior, and represents a minor fraction of the company's total shares outstanding. Trading significance is assessed as Medium due to the filer's senior profile balanced against routine programmed execution.