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Changes in Officers3109SHIKIBO LTD.Materials and Chemicals

Notice Regarding Changes in Representative Directors and Directors Serving as Audit and Supervisory Committee Members

Shirike Masahiro (尻家 正博), Representative Director and Chairman, will change from holding representative authority to serving as Chairman of the Board. Takeda Hiroaki (竹田 広明), a Director serving as an Audit and Supervisory Committee Member, will resign. Shiomi Mahoko (塩見 真保子), General Manager of the General Affairs and Human Resources Department, is scheduled to be appointed as a Director serving as an Audit and Supervisory Committee Member.

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Who is moving to which position

Resolved 14 May 2026

Incoming appointee

1 item
Scheduled Appointment Date26 June 2026. The change concerning Shirike Masahiro (尻家 正博) is scheduled to be formally decided by resolutions at the annual general meeting of shareholders scheduled for the same day and at the subsequent meeting of the Board of Directors. The appointment of Shiomi Mahoko (塩見 真保子) is scheduled to be formally decided by a resolution at the annual general meeting of shareholders scheduled for the same day.
Shiomi Mahoko (塩見 真保子)
Previous positionGeneral Manager of the General Affairs and Human Resources Department
New positionDirector serving as Audit and Supervisory Committee Member
生年月日 15 February 1965入社年 1987

Departing officer

1 item
Date of departureAt the conclusion of the annual general meeting of shareholders scheduled for 26 June 2026 (Takeda Hiroaki (竹田 広明))
Shirike Masahiro (尻家 正博), Takeda Hiroaki (竹田 広明)Next role stated
Former PositionRepresentative Director and Chairman (Shirike Masahiro (尻家 正博)); Director, Audit and Supervisory Committee Member (Takeda Hiroaki (竹田 広明))
New positionChairman of the Board (Shirike Masahiro (尻家 正博)); resignation (Takeda Hiroaki (竹田 広明))

“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

For personal reasons (Takeda Hiroaki (竹田 広明)) / Not disclosed (Shirike Masahiro (尻家 正博))

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

Shirike Masahiro (尻家 正博) will remain as a Director. Takeda Hiroaki (竹田 広明) will resign.

Shareholders’ meeting approvalRequired. The proposal to elect Shiomi Mahoko (塩見 真保子) as a Director serving as an Audit and Supervisory Committee Member is scheduled to be submitted to the annual general meeting of shareholders scheduled for 26 June 2026. The change concerning Shirike Masahiro (尻家 正博) requires resolutions at that annual general meeting of shareholders and the subsequent meeting of the Board of Directors.
Reason for change

The role and responsibility of the Company's Board of Directors is to oversee business execution by the executive officers, led by the President and Representative Executive Officer. Shirike Masahiro (尻家 正博), currently the Representative Director and Chairman, will change from holding representative authority to serving as Chairman of the Board without representative authority, further clarifying his position overseeing business execution. Through this change, the Company aims to establish a more effective Board of Directors and further strengthen corporate governance.

Who is moving to which position
ItemDetails
Resolution date14 May 2026
Scheduled Appointment Date26 June 2026. The change concerning Shirike Masahiro (尻家 正博) is scheduled to be formally decided by resolutions at the annual general meeting of shareholders scheduled for the same day and at the subsequent meeting of the Board of Directors. The appointment of Shiomi Mahoko (塩見 真保子) is scheduled to be formally decided by a resolution at the annual general meeting of shareholders scheduled for the same day.
Date of departureAt the conclusion of the annual general meeting of shareholders scheduled for 26 June 2026 (Takeda Hiroaki (竹田 広明))
Name of appointeeShiomi Mahoko (塩見 真保子)
Appointee's new positionDirector serving as Audit and Supervisory Committee Member
Appointee's previous positionGeneral Manager of the General Affairs and Human Resources Department
Appointee's date of birth15 February 1965
Year the appointee joined the Company1987
Name of departing officerShirike Masahiro (尻家 正博), Takeda Hiroaki (竹田 広明)
Former position of departing officerRepresentative Director and Chairman (Shirike Masahiro (尻家 正博)); Director, Audit and Supervisory Committee Member (Takeda Hiroaki (竹田 広明))
New position of departing officerChairman of the Board (Shirike Masahiro (尻家 正博)); resignation (Takeda Hiroaki (竹田 広明))
Reason for departureFor personal reasons (Takeda Hiroaki (竹田 広明)) / Not disclosed (Shirike Masahiro (尻家 正博))
Whether the incumbent will remain in officeShirike Masahiro (尻家 正博) will remain as a Director. Takeda Hiroaki (竹田 広明) will resign.
Reason for changeThe role and responsibility of the Company's Board of Directors is to oversee business execution by the executive officers, led by the President and Representative Executive Officer. Shirike Masahiro (尻家 正博), currently the Representative Director and Chairman, will change from holding representative authority to serving as Chairman of the Board without representative authority, further clarifying his position overseeing business execution. Through this change, the Company aims to establish a more effective Board of Directors and further strengthen corporate governance.
Subject to Approval by the General Meeting of ShareholdersRequired. The proposal to elect Shiomi Mahoko (塩見 真保子) as a Director serving as an Audit and Supervisory Committee Member is scheduled to be submitted to the annual general meeting of shareholders scheduled for 26 June 2026. The change concerning Shirike Masahiro (尻家 正博) requires resolutions at that annual general meeting of shareholders and the subsequent meeting of the Board of Directors.
Items this document does not state (6)
Number of shares held by the appointeeReasons for appointmentNumber of directors after the changeFiling 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.

The purpose with respect to Shirike Masahiro (尻家 正博) is to clarify his position as Chairman of the Board without representative authority, overseeing business execution, and to further strengthen the effectiveness of the Board of Directors and corporate governance. Takeda Hiroaki (竹田 広明) is resigning for personal reasons.

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Notice Regarding Changes in Representative Directors and Directors Serving as Audit and Supervisory Committee Members | SHIKIBO LTD. (3109) timely disclosure | Komori