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.

Occidental Oil And Gas CORPORATIONOccidental Oil And Gas CORPORATION
Showing 26 of 648 companies
Company NameCountryCityAddress 1State/ProvincePostal CodeWebsiteFounding YearYearly Revenue in U.S. DollarsEmployees TotalBusiness Legal Type - DescriptionNumber of Companies in GroupCompany Registration Number
1
Occidental Oil And Gas CORPORATION
USA
Long Beach
301 E Ocean Blvd
Los Angeles
90802
N/A
N/A
0
417
648
N/A
2
Occidental Petroleum CORPORATION
USA
Houston
5 Greenway Plz Ste 110 # 110
Harris
77046
oxy.*****
N/A
0
28
648
N/A
3
Occidental Permian LTD.
USA
Ira
14005 Fm 1610
Scurry
79527
oxy.*****
N/A
0
26
648
N/A
4
Occidental Permian LTD.
USA
Odessa
N/A
Ector
79760
N/A
N/A
0
25
648
N/A
5
Wgr Asset Holding Company LLC
USA
The Woodlands
1201 Lake Robbins Dr
Montgomery
77380
anadarko.*****
2009
$6,287,511
24
Partnership of unknown type
648
4373548
6
Occidental Permian LTD.
USA
Washington
1717 Pennsylvania Ave Nw Ste 460
District of Columbia
20006
N/A
N/A
0
23
648
N/A
7
Occidental Permian LTD.
USA
Eldorado
1730 Fm 915
Schleicher
76936
N/A
N/A
0
13
648
N/A
8
Wgr Asset Holding Company LLC
USA
Kirtland
99 Road 6500
San Juan
87417
N/A
N/A
0
12
648
N/A
9
Oxy West LLC
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
oxy.*****
2003
$1,857,193
11
Corporation
648
0800183493
10
Occidental Petroleum CORPORATION
USA
The Woodlands
1201 Lake Robbins Dr
Montgomery
77380
oxy.*****
N/A
0
10
648
N/A
11
Occidental Petroleum CORPORATION
USA
Houston
363 N Sam Houston Pkwy E
Harris
77060
N/A
N/A
0
6
648
N/A
12
Grand Bassa Tankers, INC.
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
N/A
2019
$2,717,753
5
648
N/A
13
Occidental Hafar, LLC
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
N/A
2019
$2,717,753
5
648
N/A
14
Tuscaloosa Holdings, INC.
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
N/A
2019
$2,717,753
5
648
N/A
15
New Opl, LLC
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
N/A
N/A
$2,722,724
4
Corporation
648
7571704
16
Anadarko Petroleum CORPORATION
USA
Houston
16855 Northchase Dr
Harris
77060
N/A
N/A
0
4
648
N/A
17
Oxy C & I Bulk Sales, LLC
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
oxy.*****
N/A
$2,722,724
4
648
N/A
18
Occidental Of Bangladesh, INC.
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
N/A
N/A
$2,722,724
4
648
N/A
19
Western Midstream Holdings, LLC
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
N/A
N/A
$2,120,675
4
648
N/A
20
Occidental Of Abu Dhabi, LLC
USA
Houston
5 Greenway Plz Ste 110
Harris
77046
N/A
N/A
$561,401
3
648
N/A
21
Western Gas Resources, INC.
USA
Odessa
2750 N Grandview Ave
Ector
79762
westerngas.*****
N/A
0
3
648
N/A
22
Oxy Vinyls, LP
USA
Columbus
1136 Chumar St
Muscogee
31904
lynxchemical.*****
N/A
0
3
648
N/A
23
Anadarko Petroleum CORPORATION
USA
Farmington
181 Browning Pkwy
San Juan
87401
N/A
N/A
0
3
648
N/A
24
Ingleside Cogeneration LIMITED Partnership
USA
Houston
5 Greenway Plz # 15
Harris
77046
N/A
1999
$789,008
3
Partnership of unknown type
648
2794358
25
Oxy Vinyls, LP
USA
Schaumburg
2800 W Higgins, Ste 980 (hoffman Estates)
Cook
60195
N/A
N/A
0
2
648
N/A
26
Occidental Chemical CORPORATION
USA
Gibsonia
1102 Eleanor Pl
Allegheny
15044
N/A
N/A
0
1
648
N/A

Showing 26 of 648 companies

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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 HeadquarterOccidental 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.

 

How We Map Global, National, and Local Headquarters

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Occidental Petroleum ownership & subsidiary data – FAQs

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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.

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