In Q4'25, Roblox's total operating expenses reached $652M USD, with R&D expenses at $410M USD and SG&A expenses at $242M USD, reflecting a continued upward trajectory in both categories amid ongoing investments in innovation and operations. From Q1'23 to Q4'25, operating expenses exhibited a steady growth trend, increasing from $400M USD to $652M USD overall, driven primarily by R&D expenses which rose consistently from $276M USD to $410M USD, underscoring heavy focus on research and development. SG&A expenses showed more volatility, dipping slightly in Q1'24 to $133M USD before surging to $242M USD by Q4'25, with notable acceleration post-Q1'25; this stacked bar chart highlights R&D as the dominant component, comprising over 60% of total expenses throughout the period, signaling potential margin pressures from scaling efforts.