Gary S Guthart, a director at Intuitive Surgical Inc ($ISRG), sold 10,000 shares of common stock on August 11, 2026. The price was $400.00 per share, for a total of $4,000,000. A Form 4 filed August 12, 2026, one day after the trade, recorded the sale as an open-market transaction. After the sale, Guthart's reported position stood at 1,245,679 shares.
The August 11 sale was the latest in a series. On January 27, 2026, Guthart reported two sales. One covered 1,400 shares at $531.5285 per share for $744,139.90. The other covered 24,500 shares at $530.0981 per share for $12,987,403.45. On December 1, 2025, he sold 22,806 shares at $570.8902 per share, a transaction valued at $13,019,721.90. In 2025 he also reported sales on July 28, August 29, and October 24. The October 24 filings totaled $15,769,644.48 and $764,889.86 across 28,800 and 1,400 shares, respectively. Earlier filings listed his role as Executive Chair of the Board; the most recent filing listed him as Director. The January 27 filing reported 15,720 shares held after the smaller sale and 3,694 shares held after the larger sale. The December 1 filing reported 2,694 shares held after the sale.
The August 11 filing followed another $ISRG insider sale one day earlier. Gary Loeb, a vice president, sold 400 shares on August 10 at $379.00 per share for $151,600 and filed the same day. Those two transactions were the only $ISRG sales recorded in the July 1 through August 12, 2026 window returned by the database. The August 11 per-share price was $21.00 higher than the August 10 price.
Congressional disclosures on $ISRG were also on file in 2026. Representative Ro Khanna reported a sale of $15,001 on May 27, 2026, disclosed on June 9, 2026, thirteen days after the trade. He reported a purchase of $15,001 on May 15, 2026, disclosed on June 9, 2026, twenty-five days after the trade. Khanna disclosed additional $ISRG purchases and sales with reported amounts of $1,001 or $15,001. Senator Markwayne Mullin disclosed a $15,001 purchase on December 29, 2025, reported January 16, 2026. Congressional dollar amounts in this dataset are midpoint estimates of disclosed ranges.
The August 11 sale was smaller in reported dollar value than Guthart's December 2025 and January 2026 sales, each of which exceeded $13 million in combined reported value. The August 12 Form 4 listed a per-share price of $400.00 and a post-trade position of 1,245,679 shares. Guthart's reported sales on $ISRG were all recorded as open-market transactions.