Exhibit 99.1
Resource Extraction Payment Report

This Exhibit 99.1 to Form SD represents the specified payment disclosure required by the Resource Extraction Payment Rules under Section 13(q) of the Securities Exchange Act of 1934, as amended. This report is limited to payments required to be disclosed by the Resource Extraction Payment Rules, and amounts reported in this exhibit may be different from disclosures in Occidental's other publicly available financial reports, including those found within Occidental's periodic reports filed with the U.S. Securities and Exchange Commission.

Payments are reported on a cash basis in U.S. dollars. Foreign currency payments are converted using the exchange rate that existed at the time the payment was made. Payments are grouped into projects, which Occidental has defined as the combination of the major subnational political jurisdiction (designated by ISO 3166 country codes) and the body of water for offshore operations, the resource being extracted (oil and/or natural gas), and the extraction method (all of which are "well"). Obligations levied at the entity level rather than on a particular project are disclosed as entity level payments.

Payments by Project for the year ended December 31, 2025, in Thousands of US Dollars
SegmentCountryProjectPayment CurrencyCommunity & Social Responsibility FeesRoyaltiesTaxesBonusesTotal
Corporate1
United States
Entity Level US Federal Income Tax2
USD$— $— $— $758,300 $— $758,300 
Corporate Total$— $— $— $758,300 $— $758,300 
Oil and GasAlgeriaDZ-30—Oil/Natural Gas—WellIn-Kind$— $— $— $155,086 $— $155,086 
BoliviaBO-T—Oil/Natural Gas—WellUSD$— $4,699 $— $— $— $4,699 
BO-S—Oil/Natural Gas—WellBOB$— $265 $— $— $— $265 
BO-H—Oil/Natural Gas—WellBOB$— $142 $— $— $— $142 
ColombiaCO-MAG (Caribbean Sea)—Oil/Natural Gas—WellCOP$— $1,724 $— $— $— $1,724 
OmanOM-DA—Oil/Natural Gas—WellIn-Kind$— $— $— $16,671 $— $16,671 
USD$— $1,150 $— $— $— $1,150 
OM-WU—Oil/Natural Gas—WellIn-Kind$— $— $— $170,710 $— $170,710 
USD$267 $1,250 $— $— $1,000 $2,517 
OM-ZA—Oil/Natural Gas—WellIn-Kind$— $— $— $171,512 $— $171,512 
USD$446 $2,617 $— $— $6,000 $9,063 
PeruPE-LIM—Oil/Natural Gas—WellUSD$— $150 $— $— $— $150 
QatarQA-KH—Oil/Natural Gas—WellIn-Kind$— $— $— $73,295 $— $73,295 
UAEAE-AZ—Natural Gas—WellUSD$— $1,700 $— $— $— $1,700 
AE-AZ—Oil/Natural Gas—WellUSD$— $178 $— $868 $— $1,046 
AE-AZ—Oil/Natural Gas—WellAED$— $— $— $119 $— $119 
United Kingdom
DZ-30—Oil/Natural Gas—Well2
GBP$— $— $— $50 $— $50 
United StatesUS-CO—Oil/Natural Gas—WellUSD$— $1,053 $3,146 $— $— $4,199 
US-LA (Gulf of America)—Oil/Natural Gas—WellUSD$— $10,226 $274,647 $— $1,361 $286,234 
US-NM—Oil/Natural Gas—WellUSD$— $2,903 $396,709 $— $— $399,612 
US-TX—Oil/Natural Gas—WellUSD$— $— $920 $— $— $920 
US-WY—Oil/Natural Gas—WellUSD$— $31 $24,098 $— $— $24,129 
Oil and Gas Total$713 $28,088 $699,520 $588,311 $8,361 $1,324,993 
Grand Total$713 $28,088 $699,520 $1,346,611 $8,361 $2,083,293 
1 Pursuant to Instruction 4 to Item 2.01 of Form SD, because the U.S. federal government has levied a payment obligation at the entity level rather than on a particular project, Occidental Petroleum Corporation has disclosed the entity-level payment and has not excluded amounts attributable to particular business segments or projects (each as defined in Form SD) unrelated to the commercial development of oil, natural gas or minerals.
2Taxes are reported net of refunds received, if any.


Payments by Government for the year ended December 31, 2025, in Thousands of US Dollars
CountryGovernmentGovernment EntityCommunity & Social ResponsibilityFeesRoyaltiesTaxesBonusesTotal
AlgeriaGovernment of AlgeriaMINISTRY OF FINANCE$— $— $— $155,086 $— $155,086 
Algeria Total$— $— $— $155,086 $— $155,086 
BoliviaGovernment of BoliviaYACIMIENTOS PETROLIFEROS FISCALES BOLIVIANOS$— $5,106 $— $— $— $5,106 
Bolivia Total$— $5,106 $— $— $— $5,106 
ColombiaGovernment of ColombiaAGENCIA NACIONAL DE HIDROCARBUROS$— $1,724 $— $— $— $1,724 
Colombia Total$— $1,724 $— $— $— $1,724 
OmanGovernment of OmanMINISTRY OF ENERGY AND MINERALS$— $5,017 $— $— $7,000 $12,017 
MINISTRY OF EDUCATION$583 $— $— $— $— $583 
AL DHAHIRAH MUNICIPALITY$130 $— $— $— $— $130 
TAX AUTHORITY$— $— $— $358,893 $— $358,893 
Oman Total$713 $5,017 $— $358,893 $7,000 $371,623 
PeruGovernment of PeruCOMITE DE ADMINISTRACION DE LOS RECURSOS PARA CAPACITACION$— $150 $— $— $— $150 
Peru Total$— $150 $— $— $— $150 
QatarGovernment of QatarGENERAL TAX AUTHORITY$— $— $— $73,295 $— $73,295 
Qatar Total$— $— $— $73,295 $— $73,295 
UAEGovernment of Abu DhabiABU DHABI NATIONAL OIL COMPANY$— $1,878 $— $— $— $1,878 
DEPARTMENT OF FINANCE – ABU DHABI$— $— $— $868 $— $868 
Government of UAEFEDERAL TAX AUTHORITY$— $— $— $119 $— $119 
UAE Total$— $1,878 $— $987 $— $2,865 
United KingdomGovernment of the UKHM REVENUE & CUSTOMS$— $— $— $50 $— $50 
United Kingdom Total$— $— $— $50 $— $50 
United StatesFederal GovernmentOFFICE OF NATURAL RESOURCES REVENUE$— $9,790 $699,520 $— $1,361 $710,671 
DEPARTMENT OF TREASURY$— $— $— $758,300 $— $758,300 
BUREAU OF LAND MANAGEMENT$— $3,954 $— $— $— $3,954 
BUREAU OF OCEAN ENERGY MANAGEMENT$— $183 $— $— $— $183 
BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT$— $286 $— $— $— $286 
United States Total$— $14,213 $699,520 $758,300 $1,361 $1,473,394 
Grand Total$713 $28,088 $699,520 $1,346,611 $8,361 $2,083,293