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Changes in Directors and Officers1663K&O Energy Group Inc.Energy Resources

Notice concerning executive appointments at the Company and its major subsidiaries

The Company and its major subsidiaries will change their management structures, including the presidents, representative directors and executive officers. Executive officers will retire, and directors and audit & supervisory board members of the Company and its subsidiaries will also be appointed or retire.

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How definitive the wording is.

Who is moving to which position

Resolved 13 November 2026

Incoming appointee

1 item
Scheduled Appointment DateEffective 1 January 2027 (some effective on the date of the annual general meeting of shareholders in March 2027; scheduled to be decided at the general meeting of shareholders and the subsequent meeting of the Board of Directors)
Ishiwata Naohisa (石渡 直尚), Miura Akihiro (三浦 昭宏), Jo Hisanao (城 久尚), Yamaguchi Soichiro (山口 聡一郎), Nishimura Hirokazu (西村 浩和), Takahashi Takeo (高橋 丈夫), Hora Iwayuki (袰岩 貴之)
Previous positionIshiwata Naohisa (石渡 直尚): president and executive officer under the Company's executive officer structure (promotion); Miura Akihiro (三浦 昭宏): managing executive officer under the Company's executive officer structure (reappointment); Jo Hisanao (城 久尚): executive officer under the Company's executive officer structure (new appointment); Yamaguchi Soichiro (山口 聡一郎): Not disclosed; Nishimura Hirokazu (西村 浩和): Not disclosed; Takahashi Takeo (高橋 丈夫): managing executive officer of the Company; Hora Iwayuki (袰岩 貴之): Not disclosed
New positionPresident and executive officer, representative director and managing executive officer, executive officer, executive officer, outside director, standing audit & supervisory board member, director

Departing officer

1 item
Date of departure29 September 2026 (Takeshi Mori (森 武), retirement due to death), 31 December 2026 (Akio Midorikawa (緑川 昭夫), Takeo Takahashi (高橋 丈夫)), 1 January 2027 (Yoji Yamagami (山上 陽二) and Kenji Hatano (秦野 兼次) of 関東天然瓦斯開発, Takehiro Aoki (青木 岳洋) of 大多喜ガス, Takeo Takahashi (高橋 丈夫) and Kenji Hatano (秦野 兼次) of K&Oヨウ素), the date of the annual general meeting of shareholders in March 2027 (Akio Midorikawa (緑川 昭夫), Hisanao Jo (城 久尚) and Ken Nagashima (長島 健) of the Company)
Midorikawa Akio (緑川 昭夫), Takahashi Takeo (高橋 丈夫), Mori Takeshi (森 武), Jo Hisanao (城 久尚), Nagashima Ken (長島 健), Yamagami Yoji (山上 陽二), Hatano Kenji (秦野 兼次), Aoki Takehiro (青木 岳洋)Next role stated
Former PositionPresident and executive officer, managing executive officer, Not disclosed, representative director, standing audit & supervisory board member, managing director, director, managing director
New positionDirector and adviser of 大多喜ガス株式会社 (Midorikawa Akio (緑川 昭夫)); Not disclosed (Takahashi Takeo (高橋 丈夫)); retirement (Mori Takeshi (森 武)); retirement (Jo Hisanao (城 久尚)); retirement (Nagashima Ken (長島 健)); retirement (Yamagami Yoji (山上 陽二)); retirement (Hatano Kenji (秦野 兼次)); retirement (Aoki Takehiro (青木 岳洋))

“Next role stated” means the document names the position the person holds after stepping down. It does not necessarily mean they are leaving the company.

Reason for departure

Mori Takeshi (森 武) retired due to death. The reasons for the others are Not disclosed.

Whether the incumbent will remain in office (whether they will retain their position)

Midorikawa Akio (緑川 昭夫) will remain in office as director and adviser of 大多喜ガス株式会社. The disclosures do not establish that the other retiring officers will remain on the Board of Directors.

Directors after the change10Number
Shareholders’ meeting approvalRequired. Scheduled to be decided at the annual general meeting of shareholders in March 2027 (the Company), the extraordinary general meetings of shareholders in January 2027 (関東天然瓦斯開発, 大多喜ガス and K&Oヨウ素), and the meetings of the Board of Directors following each meeting.
Who is moving to which position
ItemDetails
Resolution date13 November 2026
Scheduled Appointment DateEffective 1 January 2027 (some effective on the date of the annual general meeting of shareholders in March 2027; scheduled to be decided at the general meeting of shareholders and the subsequent meeting of the Board of Directors)
Date of departure29 September 2026 (Takeshi Mori (森 武), retirement due to death), 31 December 2026 (Akio Midorikawa (緑川 昭夫), Takeo Takahashi (高橋 丈夫)), 1 January 2027 (Yoji Yamagami (山上 陽二) and Kenji Hatano (秦野 兼次) of 関東天然瓦斯開発, Takehiro Aoki (青木 岳洋) of 大多喜ガス, Takeo Takahashi (高橋 丈夫) and Kenji Hatano (秦野 兼次) of K&Oヨウ素), the date of the annual general meeting of shareholders in March 2027 (Akio Midorikawa (緑川 昭夫), Hisanao Jo (城 久尚) and Ken Nagashima (長島 健) of the Company)
Name of appointeeIshiwata Naohisa (石渡 直尚), Miura Akihiro (三浦 昭宏), Jo Hisanao (城 久尚), Yamaguchi Soichiro (山口 聡一郎), Nishimura Hirokazu (西村 浩和), Takahashi Takeo (高橋 丈夫), Hora Iwayuki (袰岩 貴之)
Appointee's new positionPresident and executive officer, representative director and managing executive officer, executive officer, executive officer, outside director, standing audit & supervisory board member, director
Appointee's previous positionIshiwata Naohisa (石渡 直尚): president and executive officer under the Company's executive officer structure (promotion); Miura Akihiro (三浦 昭宏): managing executive officer under the Company's executive officer structure (reappointment); Jo Hisanao (城 久尚): executive officer under the Company's executive officer structure (new appointment); Yamaguchi Soichiro (山口 聡一郎): Not disclosed; Nishimura Hirokazu (西村 浩和): Not disclosed; Takahashi Takeo (高橋 丈夫): managing executive officer of the Company; Hora Iwayuki (袰岩 貴之): Not disclosed
Name of departing officerMidorikawa Akio (緑川 昭夫), Takahashi Takeo (高橋 丈夫), Mori Takeshi (森 武), Jo Hisanao (城 久尚), Nagashima Ken (長島 健), Yamagami Yoji (山上 陽二), Hatano Kenji (秦野 兼次), Aoki Takehiro (青木 岳洋)
Former position of departing officerPresident and executive officer, managing executive officer, Not disclosed, representative director, standing audit & supervisory board member, managing director, director, managing director
New position of departing officerDirector and adviser of 大多喜ガス株式会社 (Midorikawa Akio (緑川 昭夫)); Not disclosed (Takahashi Takeo (高橋 丈夫)); retirement (Mori Takeshi (森 武)); retirement (Jo Hisanao (城 久尚)); retirement (Nagashima Ken (長島 健)); retirement (Yamagami Yoji (山上 陽二)); retirement (Hatano Kenji (秦野 兼次)); retirement (Aoki Takehiro (青木 岳洋))
Reason for departureMori Takeshi (森 武) retired due to death. The reasons for the others are Not disclosed.
Whether the incumbent will remain in officeMidorikawa Akio (緑川 昭夫) will remain in office as director and adviser of 大多喜ガス株式会社. The disclosures do not establish that the other retiring officers will remain on the Board of Directors.
Number of directors after the change10 at the Company, including 6 outside directors. The new structure is stated for each major subsidiary, but the group-wide total is Not disclosed.
Subject to Approval by the General Meeting of ShareholdersRequired. Scheduled to be decided at the annual general meeting of shareholders in March 2027 (the Company), the extraordinary general meetings of shareholders in January 2027 (関東天然瓦斯開発, 大多喜ガス and K&Oヨウ素), and the meetings of the Board of Directors following each meeting.
Items this document does not state (8)
Appointee's date of birthYear the appointee joined the CompanyNumber of shares held by the appointeeReason for changeReasons for appointmentFiling as an independent officerDetails of organizational changesChange in Corporate Governance Structure

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

No reason for the changes is stated other than the decision on the executive appointments.

How to read this page

This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Notice concerning executive appointments at the Company and its major subsidiaries | K&O Energy Group Inc. (1663) timely disclosure | Komori