Brosius Mark

Brosius Mark, EVP & Chief Manufacturing and Supply Chain officer at Intuitive Surgical (ISRG), has filed 68 Form 4 transactions, all in the single company, with a pronounced sell-side bias. Over the tracked period, his open-market sales totaled approximately $6.67 million, with zero corresponding purchases or acquisitions. The most recent activity, spanning late July 2026, shows a series of small, daily sales—each between roughly $9,600 and $10,200—executed on July 27 through July 31. These followed similar clusters in June and May, where daily sale values ranged from about $7,600 to $10,350, indicating a consistent pattern of modest, periodic liquidations rather than large, one-off dispositions. The transaction pattern becomes more pronounced when looking at earlier 2026 filings. In early March, Brosius executed a series of substantially larger sales, including a single transaction on March 4 valued at approximately $1.18 million, with other March sales ranging from roughly $312,000 to $321,000. This March cluster accounts for the bulk of the total sell value. The February filings show a mix of non-discretionary events: option exercises (coded "M") with no cash value, shares withheld to cover taxes (coded "F") totaling over $2.3 million, and a compensation grant (coded "A"). These February transactions are mechanical or compensatory in nature, whereas the recurring open-market "S" sales across March, May, June, and July reflect active selling decisions. Overall, the data reveals a clear directional bias toward reducing equity exposure in ISRG, with no offsetting open-market buying activity.