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Changes in Officers4626TAIYO HOLDINGS CO.,LTD.Materials and Chemicals

Notice Regarding Personnel Changes

The titles and responsibilities of 3 executive officers have changed. Tomioka Sayaka (富岡 さやか) has been appointed Senior Managing Executive Officer, Onishi Taro (大西 太郎) Chief Strategy Officer of the Electronics Company, and Miyabe Hidekazu (宮部 英和) Chief Technology Officer of the same company. Arima Masao (有馬 聖夫) has also been assigned different responsibilities.

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Who is moving to which position

Resolved 20 June 2026

Incoming appointee

4 items
Scheduled Appointment DateEffective 20 June 2026. However, where procedures are required at individual subsidiaries, the appointments or retirements are scheduled to take effect after completion of the relevant procedures at each subsidiary.
Tomioka Sayaka (富岡 さやか)
Previous positionManaging Executive Officer; Chief Financial Officer; head of the Corporate Planning Office; General Manager of the Accounting Department; Director of 太陽油墨 (蘇州) 有限公司; Director of 太陽ファルマ株式会社; Director of 太陽ファルマテック株式会社
New positionSenior Managing Executive Officer; Chief Financial Officer; head of the Corporate Planning Office; General Manager of the Accounting Department; head of the Public Relations/Brand Marketing Office; head of the General Affairs Department; Director of 太陽油墨 (蘇州) 有限公司; Director of 太陽ファルマ株式会社; Director of 太陽ファルマテック株式会社
Onishi Taro (大西 太郎)
Previous positionSenior Managing Executive Officer; Director and General Manager of 太陽油墨(蘇州)有限公司; Managing Director of TAIYO INK INTERNATIONAL(HK)LIMITED; Director and General Manager of 太陽油墨貿易(深圳)有限公司; Director of 永盛泰新材料(江西)有限公司; Director and General Manager of 泰必豊半導体材料(深圳)有限公司
New positionSenior Managing Executive Officer; Chief Strategy Officer, Electronics Company; Director and General Manager of 太陽油墨(蘇州)有限公司; Managing Director of TAIYO INK INTERNATIONAL(HK)LIMITED; Director and General Manager of 太陽油墨貿易(深圳)有限公司; Director of 台湾太陽油墨股份有限公司; Director of TAIYO INK INTERNATIONAL (SINGAPORE) PTE LTD; Director of 永勝泰科技股份有限公司; Director of TAIYO TRADING (THAILAND) CO., LTD.; Director of TAIYO INK VIETNAM CO., LTD.; Director of 永盛泰新材料(江西)有限公司; Director and General Manager of 泰必豊半導体材料(深圳)有限公司
Miyabe Hidekazu (宮部 英和)
Previous positionManaging Executive Officer; Director of 太陽インキ製造株式会社; Director of 太陽ファインケミカル株式会社
New positionManaging Executive Officer; Chief Technology Officer, Electronics Company; Representative Director and Executive Vice President of 太陽インキ製造株式会社; Director of 太陽ファインケミカル株式会社
Arima Masao (有馬 聖夫)
Previous positionManaging Executive Officer; Chief Business Development Officer, Healthcare and Pharmaceuticals Company; Director of 太陽ファインケミカル; Representative Director and President of 株式会社マイ・スターズ
New positionManaging Executive Officer; Chief Business Development Officer, Healthcare and Pharmaceuticals Company; Director of 太陽ファインケミカル; Representative Director and President of 株式会社マイ・スターズ
Who is moving to which position
ItemDetails
Resolution date20 June 2026
Scheduled Appointment DateEffective 20 June 2026. However, where procedures are required at individual subsidiaries, the appointments or retirements are scheduled to take effect after completion of the relevant procedures at each subsidiary.
Name of appointeeTomioka Sayaka (富岡 さやか), Onishi Taro (大西 太郎), Miyabe Hidekazu (宮部 英和), Arima Masao (有馬 聖夫)
Appointee's new positionSenior Managing Executive Officer; Chief Financial Officer; head of the Corporate Planning Office; General Manager of the Accounting Department; head of the Public Relations/Brand Marketing Office; head of the General Affairs Department; Director of 太陽油墨 (蘇州) 有限公司; Director of 太陽ファルマ株式会社; Director of 太陽ファルマテック株式会社, Senior Managing Executive Officer; Chief Strategy Officer, Electronics Company; Director and General Manager of 太陽油墨(蘇州)有限公司; Managing Director of TAIYO INK INTERNATIONAL(HK)LIMITED; Director and General Manager of 太陽油墨貿易(深圳)有限公司; Director of 台湾太陽油墨股份有限公司; Director of TAIYO INK INTERNATIONAL (SINGAPORE) PTE LTD; Director of 永勝泰科技股份有限公司; Director of TAIYO TRADING (THAILAND) CO., LTD.; Director of TAIYO INK VIETNAM CO., LTD.; Director of 永盛泰新材料(江西)有限公司; Director and General Manager of 泰必豊半導体材料(深圳)有限公司, Managing Executive Officer; Chief Technology Officer, Electronics Company; Representative Director and Executive Vice President of 太陽インキ製造株式会社; Director of 太陽ファインケミカル株式会社, Managing Executive Officer; Chief Business Development Officer, Healthcare and Pharmaceuticals Company; Director of 太陽ファインケミカル; Representative Director and President of 株式会社マイ・スターズ
Appointee's previous positionManaging Executive Officer; Chief Financial Officer; head of the Corporate Planning Office; General Manager of the Accounting Department; Director of 太陽油墨 (蘇州) 有限公司; Director of 太陽ファルマ株式会社; Director of 太陽ファルマテック株式会社, Senior Managing Executive Officer; Director and General Manager of 太陽油墨(蘇州)有限公司; Managing Director of TAIYO INK INTERNATIONAL(HK)LIMITED; Director and General Manager of 太陽油墨貿易(深圳)有限公司; Director of 永盛泰新材料(江西)有限公司; Director and General Manager of 泰必豊半導体材料(深圳)有限公司, Managing Executive Officer; Director of 太陽インキ製造株式会社; Director of 太陽ファインケミカル株式会社, Managing Executive Officer; Chief Business Development Officer, Healthcare and Pharmaceuticals Company; Director of 太陽ファインケミカル; Representative Director and President of 株式会社マイ・スターズ
Items this document does not state (16)
Date of departureAppointee's date of birthYear the appointee joined the CompanyNumber of shares held by the appointeeName of departing officerFormer position of departing officerNew position of departing officerReason for departureWhether the incumbent will remain in officeReason for changeReasons for appointmentNumber of directors after the changeFiling as an independent officerDetails of organizational changesChange in Corporate Governance StructureSubject to Approval by the General Meeting of Shareholders

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 reason for the personnel change is not stated.

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Notice Regarding Personnel Changes | TAIYO HOLDINGS CO.,LTD. (4626) timely disclosure | Komori