Brosius Mark

Brosius Mark, Senior Vice President and Chief Manufacturing and Supply Chain Officer at Intuitive Surgical (ISRG), has demonstrated a clear selling bias in his recent insider transactions, with no open-market purchases reported in the past year. Since December 2025, Brosius has executed 10 sales of ISRG stock totaling over $5.4 million, with the most concentrated activity occurring in March 2026. Between March 3 and March 9, 2026, he sold shares worth $312,831, $317,643, $320,890, $1.18 million, and $316,289—amounting to nearly $2.45 million in just one week. These disposals followed a larger $2.09 million transaction on February 28, 2026, classified as a derivative disposition (Code F). The pattern extends further back, with Brosius liquidating $2.46 million in ISRG shares on December 12, 2025, alongside a $358,370 acquisition via exercise (Code M) the same day—his only recorded buy in the dataset. Prior sales include $254,499 on December 15, 2025, and smaller disposals of $121,632 and $120,551 in June 2025. Over his 53 reported transactions, Brosius has sold $10.4 million worth of ISRG stock against $358,370 in purchases, all within the same company. The absence of recent buys and the frequency of sales, particularly the March 2026 cluster, suggest a consistent reduction in his equity position. No transactions in other securities were reported.