In Q3'26, ARM's operating expenses reached a total of $1.02B USD, with R&D expenses at $737M USD marking the highest quarterly figure in the series and SG&A expenses at $284M USD showing a moderate uptick from the prior quarter. Over the period from Q4'23 to Q3'26, R&D expenses exhibited volatile growth, starting at $381M USD, dipping to $337M USD in Q1'24, then surging to a peak of $737M USD amid consistent upward momentum post-Q2'24, reflecting intensified investment in innovation. SG&A expenses remained relatively stable, fluctuating between $175.5M USD and $290M USD early on before settling in the $240M-$284M USD range from Q1'25 onward, contributing to an overall stacked bar trend of rising total operating expenses driven primarily by R&D expansion.