MITSUI E&P USA MITSUI E&P USA is a company that provides oil and gas exploration and development services. | ![]() Callon Petroleum Company Callon Petroleum Company, an independent oil and natural gas company, acquires, explores for, develops, and produces oil and natural gas properties in the Permian Basin in West Texas. | ![]() Tenaz Energy Tenaz Energy (formerly known as Altura Energy and Northern Spirit Resources) is a company that provides oil and gas exploration and development services. | ![]() LLOG Exploration Company LLOG Exploration Company is a deepwater exploration company operating primarily in the Gulf of Mexico. | ||
Founding Date | Founding Date 2011 | Founding Date 1950 | Founding Date 2015 | Founding Date 1977 | Founding Date 1999 |
Type | Type Subsidiary | Type Public | Type Public | Type Private | Type Private |
Tags | |||||
Locations | Locations Houston, US HQ | Locations Houston, US HQ Houston, US Midland, US Natchez, US | Locations Calgary, CA HQ | Locations Covington, US HQ Houston, US | Locations Houston, US HQ Williamsport, US |
Employees | Employees 142 | Employees 475118% increase | Employees 21 | Employees 1741% decrease | Employees 19 |
Valuation ($) | Valuation ($) N/A | Valuation ($) 2.4 b | Valuation ($) 181.1 m | Valuation ($) N/A | Valuation ($) N/A |
Financial | |||||
Revenue (est.) | Revenue (est.) N/A | Revenue (est.) $2.3b (FY, 2023) | Revenue (est.) $284.1m (FY, 2025) | Revenue (est.) N/A | Revenue (est.) N/A |
Net income | Net income N/A | Net income $401.2m (FY, 2023) | Net income $315.6m (FY, 2025) | Net income N/A | Net income N/A |

Callon Petroleum Company, an independent oil and natural gas company, acquires, explores for, develops, and produces oil and natural gas properties in the Permian Basin in West Texas.
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Tenaz Energy (formerly known as Altura Energy and Northern Spirit Resources) is a company that provides oil and gas exploration and development services.
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LLOG Exploration Company is a deepwater exploration company operating primarily in the Gulf of Mexico.
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Alta Resources explores and develops shale oil and gas resources.
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