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Changes in Officers4685Ryoyu Systems Co.,Ltd.Information and Communications, Services and Others

Notice Regarding Personnel Changes

Effective 24 June 2026, 7 director candidates, including alternate candidates, have been announced, and the Executive Officers and Executive Experts will also change. Kasama Haruto (笠間 晴人) will change from Executive Officer to Executive Expert, and Ishii Shogo (石井 昌悟) will leave office.

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Who is moving to which position

Resolved 22 May 2026

Incoming appointee

10 items
Scheduled Appointment Date24 June 2026 (subject to approval of the director election proposals at the Annual General Meeting of Shareholders)
Yasui Jo (安井譲)
Previous positionDirector, President and Executive Officer
New positionDirector, President and Executive Officer
Kasama Haruto (笠間 晴人)
Previous positionExecutive officers
New positionDirector, Executive Expert
Uda Shigeo (宇田 茂雄)
Previous positionOutside Directors
New positionDirector (outside director)
Maeda Mayumi (前田 真由美)
Previous positionOutside Director, Deputy General Manager of the Administration Department, Research Institute, Mitsubishi Heavy Industries,Ltd.
New positionDirector (outside director)
Kaya Hiroshi (賀谷 浩志)
Previous positionRepresentative, Kaya Hiroshi Certified Public Accountant Office; Outside Audit & Supervisory Board Member, Altech Corporation
New positionDirector, Audit and Supervisory Committee Member (Outside Director)
Tanigawa Momotaro (谷川 桃太郎)
Previous positionSenior Staff Member, Tax Management Group, Global Finance Department, Mitsubishi Heavy Industries,Ltd.
New positionDirector, Audit and Supervisory Committee Member (Outside Director)
Okada Masaki (岡田 正記)
Previous positionAudit & Supervisory Board Member, 株式会社ヤマガタ; Outside Audit & Supervisory Board Member, 昭和四日市石油株式会社
New positionCandidate for Director serving as an alternate Audit and Supervisory Committee Member
Baba Yoshihito (馬場 良仁)
Previous positionGeneral Manager of the Aerospace Technology Business Division
New positionExecutive Officer, General Manager of the Aerospace Technology Business Division
Kaneko Masahito (金子 雅仁)
Previous positionPrincipal Staff Member, Corporate Planning Department
New positionExecutive Expert
Fujimori Koji (藤森 幸司)
Previous positionGeneral Manager of the Business Administration Division
New positionExecutive Expert, General Manager of the Business Administration Division

Departing officer

1 item
Date of departure24 June 2026
Ishii Shogo (石井 昌悟)Next role stated
Former PositionExecutive Expert, HRO
New positionRetirement

“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.

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

Not applicable, as this does not concern the Board of Directors

Directors after the change7Number
Shareholders’ meeting approvalRequired. Director candidates will be proposed at the 58th Annual General Meeting of Shareholders, scheduled for 24 June 2026.
Who is moving to which position
ItemDetails
Resolution date22 May 2026
Scheduled Appointment Date24 June 2026 (subject to approval of the director election proposals at the Annual General Meeting of Shareholders)
Date of departure24 June 2026
Name of appointeeYasui Jo (安井譲), Kasama Haruto (笠間 晴人), Uda Shigeo (宇田 茂雄), Maeda Mayumi (前田 真由美), Kaya Hiroshi (賀谷 浩志), Tanigawa Momotaro (谷川 桃太郎), Okada Masaki (岡田 正記), Baba Yoshihito (馬場 良仁), Kaneko Masahito (金子 雅仁), Fujimori Koji (藤森 幸司)
Appointee's new positionDirector, President and Executive Officer, Director, Executive Expert, Director (outside director), Director (outside director), Director, Audit and Supervisory Committee Member (Outside Director), Director, Audit and Supervisory Committee Member (Outside Director), Candidate for Director serving as an alternate Audit and Supervisory Committee Member, Executive Officer, General Manager of the Aerospace Technology Business Division, Executive Expert, Executive Expert, General Manager of the Business Administration Division
Appointee's previous positionDirector, President and Executive Officer, Executive officers, Outside Directors, Outside Director, Deputy General Manager of the Administration Department, Research Institute, Mitsubishi Heavy Industries,Ltd., Representative, Kaya Hiroshi Certified Public Accountant Office; Outside Audit & Supervisory Board Member, Altech Corporation, Senior Staff Member, Tax Management Group, Global Finance Department, Mitsubishi Heavy Industries,Ltd., Audit & Supervisory Board Member, 株式会社ヤマガタ; Outside Audit & Supervisory Board Member, 昭和四日市石油株式会社, General Manager of the Aerospace Technology Business Division, Principal Staff Member, Corporate Planning Department, General Manager of the Business Administration Division
Name of departing officerIshii Shogo (石井 昌悟)
Former position of departing officerExecutive Expert, HRO
New position of departing officerRetirement
Whether the incumbent will remain in officeNot applicable, as this does not concern the Board of Directors
Number of directors after the change7 (including 4 outside directors)
Subject to Approval by the General Meeting of ShareholdersRequired. Director candidates will be proposed at the 58th Annual General Meeting of Shareholders, scheduled for 24 June 2026.
Items this document does not state (9)
Appointee's date of birthYear the appointee joined the CompanyNumber of shares held by the appointeeReason for departureReason 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 specific reason for the changes is provided.

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Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Notice Regarding Personnel Changes | Ryoyu Systems Co.,Ltd. (4685) timely disclosure | Komori