| April 2010 |
- Following the establishment of JX Holdings, Inc., Nippon Oil Corporation and Nippon Mining Holdings, Inc. became wholly-owned subsidiaries of JX Holdings, Inc.
- The common stocks of JX Holdings, Inc. were listed on the Tokyo Stock Exchange, Osaka Securities Exchange, and Nagoya Stock Exchange.
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| July 2010 |
- Nippon Oil Corporation merged with Japan Energy Corporation and Nippon Petroleum Refining Co., Ltd. and changed its trade name to JX Nippon Oil & Energy Corporation.
- Nippon Oil Exploration Ltd. merged with Japan Energy Development Co., Ltd. and changed its trade name to JX Nippon Oil & Gas Exploration Corporation.
- Nippon Mining Holdings, Inc. merged with Nippon Mining & Metals Co., Ltd. and changed its trade name to JX Nippon Mining & Metals Corporation.
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| October 2010 |
- JX Nippon Oil & Energy Corporation established Osaka International Refining Company, Limited through an incorporation-type company split. While retaining the business related to Osaka oil refineries, 49% of the stock was transferred to PETROCHINA INTERNATIONAL (JAPAN) CO., LTD.
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| March 2011 |
- Through an absorption-type split, the LP gas business of JX Nippon Oil & Energy Corporation, which was being operated by the former Nippon Oil Corporation and its subsidiary, was combined with the LP gas business of Mitsui Marubeni Liquefied Gas Co., Ltd., resulting in the formation of ENEOS GLOBE Corporation, the newly integrated subsidiary company of JX Nippon Oil & Energy Corporation.
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| January 2016 |
- The Japanese trade name of the company was changed, but the English trade name remained JX Nippon Oil & Energy Corporation.
- The Japanese trade name of the company was changed, but the English trade name remained JX Nippon Oil & Gas Exploration Corporation.
- The Japanese trade name of the company was changed, but the English trade name remained JX Nippon Mining & Metals Corporation.
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| April 2017 |
- JX Holdings, Inc. and TonenGeneral Sekiyu K.K. exchanged stocks, resulting in TonenGeneral Sekiyu K.K. becoming a wholly-owned subsidiary of JX Holdings, Inc.
- JX Holdings, Inc. changed its trade name to JXTG Holdings, Inc.
- JX Energy Corporation merged with TonenGeneral Sekiyu K.K. and changed its trade name to JXTG Nippon Oil & Energy Corporation.
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| June 2020 |
- JXTG Holdings, Inc. decided to change the management structure of the Company group into a structure where JXTG Nippon Oil & Energy Corporation will play a larger role.
- JXTG Holdings, Inc. changed the trade names of the Company to "ENEOS Holdings, Inc.".
- JXTG Nippon Oil & Energy Corporation changed the trade names of the Company to "ENEOS Corporation".
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| January 2022 |
- ENEOS Corporation acquires all shares of Japan Renewable Energy Corporation.
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| April 2022 |
- ENEOS Corporation acquires shares of the elastomer business from JSR Corporation. The business commences as ENEOS Materials Corporation.
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| June 2023 |
- JX Nippon Mining & Metals Corporation changed the English trade names of the Company to "JX Metals Corporation".
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| April 2024 |
- ENEOS Corporation's Functional Materials Company is integrated into ENEOS Materials Corporation through an absorption-type split, becoming a direct subsidiary of ENEOS Holdings via a stock dividend.
- ENEOS Corporation's Resources & Power Company becomes independent and is established as ENEOS Power Corporation, a direct subsidiary of ENEOS Holdings.
- Japan Renewable Energy Corporation changes its name to ENEOS Renewable Energy Corporation and becomes a direct subsidiary of ENEOS Holdings through a stock dividend.
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