Brosius Mark, EVP and Chief Manufacturing and Supply Chain officer at Intuitive Surgical, has filed 72 Form 4 transactions, all in ISRG. The pattern is one-directional: 25 open-market sales in the most recent stretch, zero purchases, and no acquisitions. Total sell value across the filings is $6,862,500.62, with no buy value recorded.
The recent trades cluster in weekly blocks. From May 18 through May 22, 2026, he sold roughly $39,400 in five transactions ranging from $7,604.46 to $8,028.72. A similar block ran June 8 through June 12, totaling about $48,900, with individual sales between $9,479.68 and $10,353.25. July 27 through July 31 produced five sales worth about $49,500, each between $9,632 and $10,236.24. August 17 through August 21 saw the largest weekly total, roughly $150,200, with four sales above $30,000 each. September 8 through September 11 added about $41,800, with the largest single trade of the recent period on March 9, 2026, at $312,831.45.
The sales are consistent in size and cadence, suggesting a scheduled disposition program rather than a reaction to price movement. The March trade is an outlier at roughly ten times the typical daily value. No Form 4 codes indicate gifts, option exercises, or tax withholding in the recent window. The data shows a steady seller with no offsetting accumulation in ISRG.
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