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Investor Presentaiton

1Q and Full-Year 2021 Guidance Estimates Oil & Gas 1Q21 Production 图 • Total Company: 1,085 - 1,115 Mboed • Permian: 450 - 460 Mboed¹ • . Rockies & Other: 285 - 291 Mboed GOM: 136-144 Mboed International: 214 - 220 Mboed FY 2021 Production • Total Company ~1,140 Mboed > Oil/Gas %: ~53.4 / ~26.0 Permian: ~485 Mboed Rockies & Other: ~278 Mboed GOM: ~141 Mboed International: ~236 Mboed Domestic Operating Costs - FY 2021 • Oil & Gas Production: ~$6.70 / boe • Transportation: ~$3.80 / boe . • • • OxyChem Д 1Q21 Pre-tax income: ~$225 MM FY 2021 pre-tax income: $775 - $825 MM Midstream & Marketing² • . • 1Q21 . Pre-tax income: $(135) - $(185) MM Midland - MEH spread of $0.45 - $0.55 / bbl FY 2021 Pre-tax income: $(650) - $(750) MM Midland - MEH spread of $0.45 - $0.55 / bbl Corporate FY 2021 Domestic tax rate: 22% FY 2021 International tax rate: 45% FY 2021 Overhead expense: ~$1.8 B³ FY 2021 Interest expense: ~$1.6 B4 Exploration Expense5 ~$35 MM in 1Q21 ~$210 MM in FY 2021 DD&A - FY 2021 Oil & Gas: ~$19.85 / boe OxyChem and Midstream: ~$700 MM Includes 25 Mboed of downtime related to Winter Storm Uri 2Midstream excludes WES results 4Interest expense excludes interest income 5Exploration Expense includes exploration overhead Notes: All guidance excludes discontinued operations (Ghana) 3Overhead is defined as SG&A and other operating and non-operating expenses 12

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