In Q4'26, MongoDB's total operating expenses reached $507.4M USD, comprising $189.1M USD in R&D expenses and $318.2M USD in SG&A expenses, marking a notable increase from the prior quarter and reflecting continued investment in innovation and operations. Over the period from Q1'24 to Q4'26, operating expenses exhibited a steady upward trend, growing from $339.4M USD to $507.4M USD, driven primarily by SG&A expenses which rose 43% overall and consistently dominated the breakdown at 60-65% of the total. R&D expenses also increased progressively by 62%, with a slight dip in Q4'25 and Q3'26, indicating sustained but occasionally moderated spending on development amid the company's expansion. This stacked bar chart highlights escalating costs, potentially signaling robust growth initiatives while warranting scrutiny for margin impacts.