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List of Occidental Petroleum subsidiaries

Verified insights into Occidental Petroleum’s global corporate structure and subsidiaries.

Occidental Petroleum Corporation, commonly known as Oxy, is a multinational energy company headquartered in The Woodlands, Texas, United States. Founded in 1920, it operates an extensive corporate structure with 621 subsidiaries worldwide. This ownership data is part of CompanyData.com’s verified corporate hierarchy database, covering over 380 million companies globally.

Geographic distribution of Occidental Petroleum’s subsidiaries

Occidental Petroleum has 621 subsidiaries distributed across 21 countries, with 552 in the United States (89%), 45 in Bermuda (7.2%), and 3 in United Arab Emirates (0.5%). These countries represent the core hubs of Occidental’s operations in oil and gas exploration, production, and energy services worldwide.

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  • Global ownership data

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  • Structured hierarchies

  • Contact and email data

Top Subsidiaries and Companies Owned by Occidental Petroleum

Company Name Country City Address 1 Address 2 State/Province Postal Code Website Founding Year Yearly Revenue in U.S. Dollars Employees Total Business Legal Type - Description Number of Companies in Group Company Registration Number Email Phone Number UniqueID
1
Indspec Chemical CORPORATION
USA
Pittsburgh
1010 William Pitt Way
N/A
Allegheny
15238
indspec-chem.com
N/A
$0
15
621
N/A
*********@********.***
41*****66
0918160000
2
Anadarko Petroleum CORPORATION
USA
Buffalo
921 Hwy 75
N/A
Henderson
75831
anadarko.com
N/A
$0
3
621
N/A
***********@****.***
90*****50
0124983002
3
Occidental Chemical CORPORATION
USA
Sauget
520 Falling Springs Rd
N/A
St. Clair
62206
oxy.com
N/A
$0
1
621
N/A
***********@********.***
61*****46
0958200798
4
Kerr-Mcgee CORPORATION
USA
Spring
9950 Woodloch Forest Dr Ste 2800
N/A
Harris
77380
N/A
2006
$49,473,297
3200
Corporation
621
3391209
************@******.***
83*****00
0221832114
5
Indspec Chemical CORPORATION
USA
Petrolia
133 Main St
N/A
Butler
16050
indspec-chem.com
1996
$22,621,067
300
Corporation
621
2356527
***********@***.***
72*****70
0308315401
6
Indspec Holding CORPORATION
USA
Petrolia
133 Main St
N/A
Butler
16050
N/A
1993
$1,156,472
280
Corporation
621
N/A
******@***.***
72*****70
0936346504
7
Oxy INC.
USA
Midland
6001 Deauville
N/A
Midland
79706
oxy.com
N/A
$0
162
621
N/A
*******@*****.***
43*****00
0175342860
8
Oxy INC
USA
Denver City
2.25 M N Denver City Hwy 214
N/A
Yoakum
79323
N/A
N/A
$0
54
621
N/A
*******@********.***
0918068188
9
Occidental Permian LTD.
USA
Sheffield
Hwy 349 (32 Mi S of Sheffield)
N/A
Pecos
79781
N/A
N/A
$0
45
621
N/A
*******@*****.***
0155754351
10
Kerr-Mcgee (nevada) LLC
USA
Dallas
5735 Pineland Dr Ste 300
N/A
Dallas
75231
N/A
N/A
$0
38
621
N/A
************@*****.***
0230809578
11
Kerr-Mcgee (nevada) LLC
USA
Belfield
906 Highway 85 N
N/A
Stark
58622
denbury.com
N/A
$0
38
621
N/A
***********@******.***
70*****88
0162812476
12
Western Gas Resources, INC.
USA
Dallas
N/A
N/A
Dallas
75284
N/A
N/A
$0
31
621
N/A
*****@******.***
0945803976
13
Occidental Permian LTD.
USA
Odessa
N/A
N/A
Ector
79760
N/A
N/A
$0
25
621
N/A
********@*****.***
0287979450
14
Anadarko Petroleum CORPORATION
USA
Cheyenne Wells
15562 Us Highway 385
N/A
Cheyenne
80810
N/A
N/A
$0
24
621
N/A
*****@***.***
0726544848
15
Anadarko Petroleum CORPORATION
USA
Fairfield
179 W Fairfield
N/A
Freestone
75840
westernmidstream.com
N/A
$0
24
621
N/A
***********@****.***
90*****06
0120343314
16
Oxy INC.
USA
Elkhart
1117 N Hwy 27
N/A
Morton
67950
N/A
N/A
$0
22
621
N/A
******@*******.***
62*****00
0970740176
17
Western Gas Resources, INC.
USA
Spring
9950 Woodloch Forest Dr
N/A
Harris
77380
N/A
2015
$40,151,832
20
621
N/A
***********@****.***
83*****00
0191169678
18
Anadarko Petroleum CORPORATION
USA
Coahoma
103 S 1st St
N/A
Howard
79511
N/A
N/A
$0
20
621
N/A
********@******.***
0126846214
19
Occidental Permian LTD.
USA
Ira
14005 Fm 1610
N/A
Scurry
79527
oxy.com
N/A
$0
19
621
N/A
*********@*******.***
32*****92
0918131325
20
Occidental Chemical CORPORATION
USA
Geismar
8318 Ashland Rd
N/A
Ascension
70734
oxy.com
N/A
$0
18
621
N/A
*******@********.***
22*****00
0203792935
21
Occidental Chemical CORPORATION
USA
La Porte
1800 Vista Rd
N/A
Harris
77571
N/A
N/A
$0
18
621
N/A
***********@***.***
0899826200
22
Oxy INC
USA
Ulysses
446 S Road M
N/A
Grant
67880
oxy.com
N/A
$0
14
621
N/A
*********@****.***
62*****32
01041910949
23
Anadarko Petroleum CORPORATION
USA
Quitman
3716 Highway 155
N/A
Jackson
71268
anadarko.com
N/A
$0
12
621
N/A
*******@*******.***
0150351139
24
Anadarko Petroleum CORPORATION
USA
Golden Meadow
124 4th St
N/A
Lafourche
70357
N/A
N/A
$0
12
621
N/A
***********@***.***
0134108638
25
Anadarko Petroleum CORPORATION
USA
Giddings
404 E Independence St
N/A
Lee
78942
anadarko.com
N/A
$0
12
621
N/A
*******@***.***
97*****54
0144485397
26
Wgr Asset Holding Company LLC
USA
Kirtland
99 Road 6500
N/A
San Juan
87417
N/A
N/A
$0
12
621
N/A
*******@*****.***
50*****01
01080612057

Companies by Employee Size

  • 0 or Unknown 7
  • 1 to 100 584
  • 101 to 499 24
  • 500 to 999 4
  • 1.000 to 4.999 2

Companies by Revenue Size (in USD)

  • 0 or Unknown 304
  • 1 to 100.000 1
  • 100.001 to 499.999 60
  • 500.000 to 999.999 14
  • 1.000.000 to 4.999.999 200
  • 5.000.000 to 9.999.999 13
  • 10.000.000 to 49.999.999 20
  • 50.000.000 to 99.999.999 1
  • 100.000.000 to 499.999.999 3
  • 500.000.000 to 999.999.999 1
  • 1.000.000.000 or more 4
Download Data

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Explore Corporate Hierarchies in Detail

Occidental Petroleum’s ownership network is part of more than 41 million corporate hierarchies mapped in our company ownership database. It reveals how companies are structured and connected, showing parent entities and subsidiaries with verified data from groups across 200 countries and jurisdictions. Explore how our dataset works — and request a tailored sample.

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Occidental Petroleum Company Facts

Where is Occidental Petroleum headquartered?

In Houston, Texas, United States.

How many subsidiaries does Occidental Petroleum have?

About 621 subsidiaries across 22 countries.

Who owns Occidental Petroleum?

Occidental Petroleum Corporation is publicly traded on the NYSE (Ticker: OXY) with no single majority shareholder.

Is Occidental Petroleum a US company?

Yes. Occidental Petroleum is incorporated in the United States.

How many people work for Occidental Petroleum?

Occidental Petroleum employs approximately 11,000 people worldwide.

Corporate family tree

Why Ownership Structure Data Matters

Understanding ownership is key to seeing how companies connect and operate. Our corporate hierarchy data helps you trace relationships between parent entities, subsidiaries, and shareholders, revealing control, structure, and risk within any global group. Whether you’re analysing Occidental Petroleum or another multinational, this level of insight supports compliance checks, market research, and smarter CRM data management. With verified ownership records covering more than 380 million companies worldwide, CompanyData.com delivers a clear view of who owns who across industries and borders.

How We Map Global, National, and Local Headquarters

At CompanyData.com, each company profile – like Occidental Petroleum – is mapped using our three-level hierarchy model: Global, National, and Local headquarters. This structure reveals how every entity fits into its wider corporate family.

Three levels we use

  • Global Headquarter — Occidental Petroleum Corporation serves as the global headquarter of the Occidental Petroleum Group, located in Houston, Texas, United States. It sits above all other entities in the group.
  • National Headquarters — Country-level entities manage operations and report to the global parent. Examples include Occidental Petroleum USA, Occidental Petroleum Canada Ltd., and other regional subsidiaries operating within specific countries.
  • Local Headquarters — Regional subsidiaries oversee production sites, refineries, and divisions within their own markets, maintaining local compliance and brand management.

Each entity is assigned a unique ID, allowing you to link subsidiaries to parent groups, trace ownership paths, and integrate the data across your own systems.

How control is shown

Control is determined by ownership. When a company owns more than fifty percent of another, we classify it as a controlled subsidiary. Our data focuses on these majority-controlled relationships to clearly represent corporate hierarchies. This approach provides a transparent view of complex ownership networks such as Occidental Petroleum’s and can be applied to any multinational group.

Why this matters

This model helps identify the real decision makers within the Occidental Petroleum Group, simplifies compliance checks, and supports M&A or risk analysis. By mapping each entity with verified ownership data, CompanyData.com enables users to navigate Occidental Petroleum’s corporate hierarchy confidently and see how global companies are structured. With data on more than 621 subsidiaries spread across 22 countries, including the United States, Bermuda, Cayman Islands, United Arab Emirates, and more, our platform delivers clarity and transparency to international teams working with complex corporate networks.

 

Occidental Petroleum

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Occidental Petroleum ownership & subsidiary data – FAQs

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The price of our Occidental Petroleum company data varies based on your chosen details and delivery method. Whether you need a list of subsidiaries or a full dataset via API or bulk files, we offer flexible pricing to suit your needs. You can request a free quote and record count within 24 hours — our team will provide transparent pricing and a free sample of 10 company contacts. At CompanyData.com, you only pay for the verified global data you need.

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At CompanyData.com, you can access detailed, verified data on Occidental Petroleum Corporation and all its subsidiaries, updated daily. This includes company names, registration details, locations, industry classifications, financial indicators—including revenue of $25.96 billion—and key contacts. You can download the data via the Bold Platform, API, or bulk file delivery. Our database offers 100% worldwide company coverage, ensuring complete and accurate insights.

At CompanyData.com, our data comes from verified global business sources to ensure accuracy and full coverage. We combine official registers, financial filings, LEI records, trusted partners, and verified company websites. All data is cross-checked and validated by our experts, ensuring it’s accurate, up-to-date, and GDPR-compliant.

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