In Q1'26, Chipotle Mexican Grill's (CMG) operating expenses totaled $203.72M USD, entirely comprising SG&A expenses, as R&D expenses remained at $0 throughout the period. This marks a notable increase from the prior quarter's $160.34M USD, reflecting heightened administrative and general costs. Over the timeframe from Q2'23 to Q1'26, SG&A expenses exhibited volatility with an overall upward trend, rising from $156.50M USD in Q2'23 to a peak of $204.63M USD in Q1'24 before fluctuating downward to $126.61M USD in Q3'24 and stabilizing around $160-170M USD in subsequent quarters. R&D expenses showed no activity across all periods, indicating a consistent focus on operational rather than research-driven expenditures in this stacked bar chart analysis.