The latest data point for RKLB's Return on Sales (ROS) in Q4'25 shows a value of -11.5%, marking a substantial improvement from the more negative figures observed earlier in the period. This represents the least negative reading in the dataset, indicating a narrowing of losses relative to sales in the most recent quarter. Over the timeframe from Q1'23 to Q4'25, RKLB's ROS has exhibited an overall improving trend, starting from a deeply negative -80.9% and gradually climbing toward less severe losses, with notable progress in 2024 and 2025. Key inflection points include a peak improvement to -37.7% in Q4'24, followed by a slight dip to -48.0% in Q1'25, before rebounding sharply in Q4'25; the area chart highlights persistent volatility but underscores a pattern of operational efficiency gains, reducing the average quarterly loss from around -70% in 2023 to under -40% in 2025.