Intuitive Surgical (ISRG) EVP Mark Brosius Sells Shares

What Happened
Mark Brosius, EVP & Chief Manufacturing and Supply Chain Officer at Intuitive Surgical (ISRG), sold a total of 154 shares in two open-market transactions. On 2026-08-20 he sold 77 shares at $396.37 (reported value $30,520) and on 2026-08-21 he sold 77 shares at $375.57 (reported value $28,919), for aggregate proceeds of about $59,439. These were sales (not purchases), which are often routine and do not by themselves indicate a change in the insider’s view of the company.

Key Details

• Transaction types: Open market/private sales (Code S).
• Dates and prices: 2026-08-20 — 77 shares @ $396.37 ($30,520); 2026-08-21 — 77 shares @ $375.57 ($28,919).
• Total shares sold: 154; total reported proceeds: ~$59,439.
• Shares owned after transaction: Not specified in the filing.
• Footnote: Transactions executed under a Rule 10b5-1 trading plan that expires Feb 14, 2027.
• Filing timeliness: Report filed 2026-08-21 for transactions on 2026-08-20 and 2026-08-21 (filed next day).

Context
10b5-1 trading plans allow insiders to sell shares on a preset schedule even while in possession of material nonpublic information; filings note the plan but do not explain motivation. Sales are common for tax, diversification, or liquidity reasons; they are not an explicit negative signal on company fundamentals.