In Q4'25, Rivian (RIVN)'s Operating Cash Flow recorded a negative $681M, marking a downturn from the positive $64M in Q2'25 and $26M in Q3'25, while Free Cash Flow stood at a more substantial negative $1.14B, reflecting ongoing capital expenditures amid production scaling. This latest quarterly data point, covering the period from Q1'23 to Q4'25, highlights persistent cash burn despite intermittent improvements. Overall, Operating Cash Flow exhibited a volatile trend with consistent negatives averaging around -$1B per quarter from Q1'23 to Q3'24, followed by a sharp positive turnaround to $1.18B in Q4'24, but reverted to mixed results in 2025 with three out of four quarters positive yet culminating in decline. Free Cash Flow mirrored this pattern but remained more negative throughout, improving from an average -$1.48B early on to a peak positive $856M in Q4'24, before sliding back to averages near -$700M in 2025, underscoring challenges in achieving sustainable free cash generation amid Rivian's growth investments in electric vehicle manufacturing.