In Q1'26, Texas Instruments' (TXN) R&D expenses reached $510M, while SG&A expenses stood at $464M, resulting in total operating expenses of $974M. This marks a slight decline from Q4'25's combined $967M, primarily driven by a modest drop in R&D spending despite stable SG&A levels. Over the period from Q2'23 to Q1'26, total operating expenses exhibited an overall upward trend, rising from $938M to $974M, with notable growth in both R&D (from $477M to $510M) and SG&A (from $461M to $464M) categories. Key inflection points include a dip in Q3'24 to $920M, followed by consistent increases peaking at $1.01B in Q2'25, reflecting potential investments in innovation amid fluctuating quarterly performance; the stacked bar chart highlights R&D as the dominant component, consistently comprising over 50% of totals.