The latest data point for ISRG's Return on Sales (ROS) in Q4'25 stands at 33.2%, reflecting a slight moderation from the preceding quarter's peak but maintaining a robust level indicative of strong operational efficiency. Over the period from Q2'23 to Q4'25, ROS has exhibited an overall upward trend, rising from 28.1% to 33.2% with intermittent fluctuations, including a dip to 26.5% in Q4'23 and a notable recovery to 33.9% in Q3'25 before the recent pullback. Key growth patterns highlight consistent improvements in Q2'24 through Q3'25, driven by an average quarterly increase of approximately 1.5 percentage points during peak phases, underscoring ISRG's enhancing profitability amid potential market expansions. The area chart visualization emphasizes this progressive accumulation, though Q1'26 shows no data, limiting forward projections.