In Q1'26, Occidental Petroleum's (OXY) operating cash flow declined sharply to -$111M USD, marking the first negative value in the period and a significant drop from the $2.63B USD recorded in Q4'25. This downturn contrasts with the positive free cash flow of $1.88B USD in Q4'25, which fell to -$1.67B USD in Q1'26, indicating heightened cash outflows likely due to operational or capital pressures. From Q2'23 to Q1'26, operating cash flow exhibited volatility with an overall upward trend in 2023 (peaking at $3.24B USD in Q4'23) followed by fluctuations, including a low of $2.01B USD in Q1'24 and a high of $3.68B USD in Q3'24, before stabilizing around $2.5B-$3B USD in 2025 and turning negative in Q1'26. Free cash flow mirrored this pattern, starting at $1.45B USD in Q2'23, reaching a series high of $1.98B USD in Q3'24, dipping to $245M USD in Q1'25, and rebounding to $1.88B USD in Q4'25 prior to the Q1'26 deficit, highlighting periods of robust generation offset by intermittent constraints in capital expenditures or investments.