Phillips 66

For 2016, the largest purchasers and marketers of our total oil and gas production were Phillips 66 Company, Clearwater Enterprises, and Devlar Energy, which accounted for 58%, 35% and 6%, respectively, of our total production sold.

For 2015, the largest purchasers and marketers of our total oil and gas production were Phillips 66, Clearwater Enterprises and Devlar Energy, which accounted for 48%, 41% and 9%, respectively, of total oil and natural gas sales sold in 2015.

For the year ended December 31, 2024, two purchasers each accounted for more than 10% of our revenue: Phillips 66 Company (32.2%) and Shell Oil Company (12.7%).

If it were to lose any single customer, the Company believes that a substitute customer to purchase the impacted production volumes could be identified.The following individual customers each accounted for 10% or more of total reported revenues for the period indicated: For the Year Ended December 31, 2025 2024 Major customers: Phillips 66 28% 33%HF Sinclair Corporation (formerly: Sinclair Oil & Gas Company) 21% 25%Southwest Energy LP n/a% 10% Oil and Natural Gas PropertiesOil and natural gas exploration, development and production activities are accounted for in accordance with the successful efforts method of accounting.

If it were to lose any single customer, the Company believes that a substitute customer to purchase the impacted production volumes could be identified.The following individual customers each accounted for 10% or more of total reported revenues for the period indicated: For the Year Ended December 31, 2024 2023 Major customers: Phillips 66 33% 17%HF Sinclair Corporation (formerly: Sinclair Oil & Gas Company) 25% 24%Southwest Energy LP 10% 13% Oil and Natural Gas PropertiesOil and natural gas exploration, development and production activities are accounted for in accordance with the successful efforts method of accounting.

If it were to lose any single customer, the Company believes that a substitute customer to purchase the impacted production volumes could be identified.The following individual customers each accounted for 10% or more of total reported revenues for the period indicated: For the Year Ended December 31, 2022 2021 Major customers: HF Sinclair Corporation (formerly: Sinclair Oil & Gas Company) 23% 20%Southwest Energy LP 13% n/a%Koch Energy Services, LLC 13% n/a%Phillips 66 n/a% 19%ETC Texas Pipeline LTD n/a% 12% Oil and Natural Gas PropertiesOil and natural gas exploration, development and production activities are accounted for in accordance with the successful efforts method of accounting.

If it were to lose any single customer, the Company believes that a substitute customer to purchase the impacted production volumes could be identified.The following individual customers each accounted for 10% or more of total reported revenues for the period indicated: For the Year Ended December 31, 2021 2020 Major customers: Sinclair Oil & Gas Company 20% 21%Phillips 66 19% 23%ETC Texas Pipeline LTD 12% n/a%BP America Production Company n/a% 17%

For the year ended December 31, 2025, sales to Phillips 66 Company and Marathon Petroleum Supply & Trading LLC accounted for approximately 21% and 12%, respectively, of the Company’s total product sales.

For the year ended December 31, 2024, sales to Phillips 66 Company accounted for approximately 19% of the Company’s total product sales.

For the year ended December 31, 2023, sales to Phillips 66 Company and Gunvor USA LLC accounted for approximately 20% and 14%, respectively, of the Company’s total product sales.

For the year ended December 31, 2022, sales to Phillips 66 Company and Shell Trading (US) Company accounted for approximately 17% and 11%, respectively, of the Company’s total product sales.

For the year ended December 31, 2021, sales to Phillips 66 Company accounted for approximately 13% of the Company’s total product sales.

For the Successor period of November 20, 2020 through December 31, 2020, sales to ExxonMobil Oil Corporation and Phillips 66 Company accounted for approximately 22% and 15%, respectively, of the Company’s total product sales.

For the three months ended September 30, 2020 and 2019, revenue from Phillips 66 Company made up approximately 18% and 21%, respectively, and revenue from Shell Trading (US) Company made up approximately 7% and 11%, respectively, of our total consolidated revenue and was included in our U.S. Gulf of Mexico segment.

For the three months ended June 30, 2020 and 2019, revenue from Phillips 66 Company made up approximately 24% and 22%, respectively, and revenue from Shell Trading (US) Company made up approximately 8% and 9%, respectively, of our total consolidated revenue and was included in our U.S. Gulf of Mexico segment.

For the three months ended March 31, 2020 and 2019, revenue from Phillips 66 Company made up approximately 47% and 22%, respectively, and revenue from Shell Trading (US) Company made up approximately 20% and 5%, respectively, of our total consolidated revenue and was included in our U.S. Gulf of Mexico segment.

For the three months ended September 30, 2019 and 2018, revenue from Phillips 66 Company made up approximately 21% and 6%, respectively, and revenue from Shell Trading (US) Company made up approximately11% and 3%, respectively, of our total consolidated revenue and was included in our U.S. Gulf of Mexico segment.

Phillips 66 13 % 11 % 12 %

DCP Midstream Texas and Oklahoma (a) (a) 12 %

Phillips 66 (a) (a) 10 %

Phillips 66 (a) 10 % 15 %

Phillips 66 10 % 15 % 16 %

Phillips 66 N/A 10 % N/A

Phillips 66 Company 6 % 22 % — %

Phillips 66 Company * * 22 %

DCP Midstream, LP 2 % 6 % 15 %

DCP Midstream 1 % 11 %

In 2025, there were two major customers, Ontario Cannabis Retail Corporation and Alberta Gaming, Liquor and Cannabis Commission, which accounted for approximately 27% and 16%, respectively, of the Company’s consolidated net revenues, before excises taxes, for the year ended December 31, 2025.

Some of our largest customers include Exxon Mobil Corporation, MV Purchasing, BP, Shell, and Phillips 66.

8512016209!DISTILLATE,NAVAL