EXHIBIT 21
Subsidiaries of the Registrant (1), (2) and (3) – at July 1, 2026
| Percentage of Voting Securities Owned Directly or Indirectly by Registrant |
State or Country of | |||
| AKG Marketing Company Limited | 87.5 | Bahamas | ||
| Al-Jubail Petrochemical Company (4) (5) | 50 | Saudi Arabia | ||
| Alberta Products Pipe Line Ltd. (5) | 45 | Canada | ||
| Ancon Insurance Company Inc. | 100 | Vermont | ||
| Barzan Gas Company Limited (5) | 7 | Qatar | ||
| BEB Erdgas und Erdoel GmbH & Co. KG (4) (5) | 50 | Germany | ||
| Canada Imperial Oil Limited | 69.6 | Canada | ||
| Caspian Pipeline Consortium (5) | 7.50 | Russia/Kazakhstan | ||
| Coral FLNG S.A. (5) | 25 | Mozambique | ||
| Cross Timbers Energy LLC (4) (5) | 50 | Delaware | ||
| Denbury Green Pipeline-Texas, LLC | 100 | Delaware | ||
| Denbury Gulf Coast Pipelines, LLC | 100 | Delaware | ||
| Denbury Onshore, LLC | 100 | Delaware | ||
| Ellora Energy Inc. | 100 | Delaware | ||
| Esso Australia Resources Pty Ltd | 100 | Australia | ||
| Esso Deutschland GmbH | 100 | Germany | ||
| Esso Erdgas Beteiligungsgesellschaft mbH | 100 | Germany | ||
| Esso Exploration and Production Angola (Overseas) Limited | 100 | Bahamas | ||
| Esso Exploration and Production Nigeria (Deepwater) Limited | 100 | Nigeria | ||
| Esso Exploration and Production Nigeria Limited | 100 | Nigeria | ||
| Esso Exploration and Production UK Limited | 100 | United Kingdom | ||
| Esso Exploration Angola (Block 15) Limited | 100 | Bahamas | ||
| Esso Exploration Angola (Block 17) Limited | 100 | Bahamas | ||
| Esso Nederland B.V. | 100 | Netherlands | ||
| Esso Norge AS | 100 | Norway | ||
| Esso Petroleum Company Limited | 100 | United Kingdom | ||
| Exxon Azerbaijan Limited | 100 | Bahamas | ||
| Exxon Chemical Arabia Inc. | 100 | Delaware | ||
| Exxon Mobil Corporation | 100 | New Jersey | ||
| ExxonMobil (China) Investment Co. Ltd. | 100 | China | ||
| ExxonMobil (Huizhou) Chemical Co. Ltd. | 100 | China | ||
| ExxonMobil (Taicang) Petroleum Co. Ltd. | 100 | China | ||
| ExxonMobil Abu Dhabi Offshore Petroleum Company Limited | 100 | Bahamas | ||
| ExxonMobil Africa and Middle East Management Ltd | 100 | United Arab Emirates | ||
| ExxonMobil Alaska Production Inc. | 100 | Delaware | ||
| ExxonMobil Asia Pacific Pte. Ltd. | 100 | Singapore | ||
| ExxonMobil Australia Pty Ltd | 100 | Australia | ||
| ExxonMobil Barzan Limited | 100 | Bahamas | ||
| ExxonMobil Canada Ltd. | 100 | Canada |
1
| Percentage of Voting Securities Owned Directly or Indirectly by Registrant |
State or Country of | |||
| ExxonMobil Canada Properties | 100 | Canada | ||
| ExxonMobil Capital Hungary Kft. | 100 | Hungary | ||
| ExxonMobil Central Europe Holding GmbH | 100 | Germany | ||
| ExxonMobil Chemical Gulf Coast Investments LLC | 100 | Delaware | ||
| ExxonMobil China Petroleum & Petrochemical Company Private Limited | 100 | Singapore | ||
| ExxonMobil Development Africa B.V. | 100 | Netherlands | ||
| ExxonMobil Egypt (S.A.E.) | 100 | Egypt | ||
| ExxonMobil Exploracao Brasil Ltda | 100 | Brazil | ||
| ExxonMobil Exploration and Production Malaysia Inc. | 100 | Delaware | ||
| ExxonMobil Finance Company Limited | 100 | United Kingdom | ||
| ExxonMobil Financial Investment Company Limited | 100 | United Kingdom | ||
| ExxonMobil Gas Marketing Europe Limited | 100 | United Kingdom | ||
| ExxonMobil Global Services Company | 100 | Delaware | ||
| ExxonMobil Guyana Ltd. | 100 | Bahamas | ||
| ExxonMobil Holding Company Holland LLC | 100 | Delaware | ||
| ExxonMobil Kazakhstan Inc. | 100 | Bahamas | ||
| ExxonMobil Kazakhstan Ventures Inc. | 100 | Delaware | ||
| ExxonMobil Marine Limited | 100 | United Kingdom | ||
| ExxonMobil Mexico S.A. de C.V. | 100 | Mexico | ||
| ExxonMobil Oil Corporation | 100 | New York | ||
| ExxonMobil Permian Highway Pipeline LLC | 100 | Delaware | ||
| ExxonMobil Petroleum & Chemical BV | 100 | Belgium | ||
| ExxonMobil Pipeline Company LLC | 100 | Delaware | ||
| ExxonMobil PNG Antelope Limited | 100 | Papua New Guinea | ||
| ExxonMobil PNG Limited | 100 | Papua New Guinea | ||
| ExxonMobil Qatargas (II) Limited | 100 | Bahamas | ||
| ExxonMobil Qatargas Inc. | 100 | Delaware | ||
| ExxonMobil Ras Laffan (III) Limited | 100 | Bahamas | ||
| ExxonMobil Rasgas Inc. | 100 | Delaware | ||
| ExxonMobil Sales and Supply LLC | 100 | Delaware | ||
| ExxonMobil Technology and Engineering Company | 100 | Delaware | ||
| ExxonMobil Upstream Integrated Solutions Company | 100 | Delaware | ||
| ExxonMobil Ventures Cyprus Limited | 100 | Cyprus | ||
| Fujian Refining & Petrochemical Co. Ltd. (5) | 25 | China | ||
| GasTerra B.V. (5) | 25 | Netherlands | ||
| Golden Pass LNG Terminal Investments LLC | 100 | Delaware | ||
| Golden Pass LNG Terminal LLC (5) | 30 | Delaware | ||
| Golden Pass Pipeline LLC (5) | 30 | Delaware |
2
| Percentage of Voting Securities Owned Directly or Indirectly by Registrant |
State or Country of | |||
| Gulf Coast Growth Ventures LLC (4) (5) | 50 | Delaware | ||
| Imperial Oil Limited | 69.6 | Canada | ||
| Imperial Oil Resources Limited | 69.6 | Canada | ||
| Imperial Oil Resources N.W.T. Limited | 69.6 | Canada | ||
| Imperial Oil/Petroliere Imperiale | 69.6 | Canada | ||
| Infineum USA L.P. (4) (5) | 50 | Delaware | ||
| Marine Well Containment Company LLC (5) | 12.5 | Delaware | ||
| Mobil Australia Resources Company Pty Limited | 100 | Australia | ||
| Mobil Oil Australia Pty Ltd | 100 | Australia | ||
| Mobil Oil Exploration & Producing Southeast Inc. | 100 | Delaware | ||
| Mobil Oil New Zealand Limited | 100 | New Zealand | ||
| Mobil Yanbu Petrochemical Company Inc. | 100 | Delaware | ||
| Mobil Yanbu Refining Company LLC | 100 | Delaware | ||
| Mozambique Rovuma Venture S.p.A. (5) | 35.714 | Italy | ||
| Nederlandse Aardolie Maatschappij B.V. (4) (5) | 50 | Netherlands | ||
| Palmetto Transoceanic LLC | 100 | Delaware | ||
| Papua New Guinea Liquefied Natural Gas Global Company LDC (5) | 33.2 | Bahamas | ||
| Permian Express Partners LLC (5) | 12.3 | Delaware | ||
| Permian Highway Pipeline LLC (5) | 17 | Delaware | ||
| Phillips Exploration LLC | 100 | Delaware | ||
| Pioneer Natural Resources Company | 100 | Delaware | ||
| Pioneer Natural Resources USA, Inc. | 100 | Delaware | ||
| Pioneer Water Management LLC | 100 | Delaware | ||
| QatarEnergy LNG N (2) (5) | 24.15 | Qatar | ||
| QatarEnergy LNG NFE (3) (5) | 25 | Qatar | ||
| QatarEnergy LNG S (2) (5) | 30.517 | Qatar | ||
| QatarEnergy LNG S (3) (5) | 30 | Qatar | ||
| Saudi Aramco Mobil Refinery Company Ltd. (4) (5) | 50 | Saudi Arabia | ||
| Saudi Yanbu Petrochemical Co. (4) (5) | 50 | Saudi Arabia | ||
| SeaRiver Maritime Inc. | 100 | Delaware | ||
| SeaRiver Maritime LLC | 100 | Delaware | ||
| South Hook LNG Terminal Company Limited (5) | 24.15 | United Kingdom | ||
| Tengizchevroil LLP (5) | 25 | Kazakhstan | ||
| Wink to Webster Pipeline LLC | 46.875 | Delaware | ||
| XH LLC | 100 | Delaware | ||
| XTO Delaware Basin LLC | 100 | Texas | ||
| XTO Energy Inc. | 100 | Delaware | ||
| XTO Holdings LLC | 100 | Delaware | ||
| XTO Permian Midstream LLC | 100 | Delaware | ||
| XTO Permian Operating LLC | 100 | Texas |
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NOTES:
| (1) | For the purposes of this list, if the registrant owns directly or indirectly approximately 50 percent of the voting securities of any person and approximately 50 percent of the voting securities of such person is owned directly or indirectly by another interest, or if the registrant includes its share of net income of any other unconsolidated person in consolidated net income, such person is deemed to be a subsidiary. |
| (2) | With respect to certain companies, shares in names of nominees and qualifying shares in names of directors are included in the above percentages. |
| (3) | The names of other subsidiaries have been omitted from the above list since considered in the aggregate, they would not constitute a significant subsidiary under Securities and Exchange Commission Regulation S-X, Rule 1-02(w). |
| (4) | The registrant owns directly or indirectly approximately 50 percent of the securities of this person and approximately 50 percent of the voting securities of this person is owned directly or indirectly by another single interest. |
| (5) | The investment in this unconsolidated person is represented by the registrant’s percentage interest in the underlying net assets of such person. The accounting for these unconsolidated persons is referred to as the equity method of accounting. |
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