As is explained in further detail below, it has come to light that there are potential issues in connection with the manufacturing of certain products by the Company and its group companies, including changes to materials, processes and designs without customer check (hereinafter referred to as the “Issues”). The Issues were identified through a comprehensive quality inspection, involving employee interviews at every production site, cross-referencing of records related to process and design changes, and the establishment of a whistleblower hotline for all employees to report quality management concerns, that has been led by the Company’s Reform Committee and are being disclosed publicly today consistent with the Company’s commitment to operate transparently with material and potentially material matters in a manner respectful to our various stakeholders.

At this time, no issues that immediately affect product functionality or safety have been identified.

We have already begun contacting and providing explanations to our customers of the affected products in which the Issues have been identified. Going forward, we will continue to respond appropriately with respect to identified product issues, including technical verification and improvement and review of our internal quality management systems.

The Company has determined that an objective investigation by external experts with extensive experience and expertise in investigating similar cases is necessary for a more detailed clarification of the facts, identification of root causes, and consideration of effective remedial measures to reinforce our commitment to product quality, and has accordingly as of today established an Investigation Committee with the composition described in Section 3 of the full release below. Going forward, we will fully cooperate with the Investigation Committee and, in parallel with the Committee’s investigation, will launch an “Improvement Promotion Office” within the Company to ensure timely communication with our customers and implement effective measures to prevent recurrence.

Please refer to the full release: https://www.nidec.com/files/user/www-nidec-com/corporate/news/2026/0513-02/260513-02en.pdf

View source version on businesswire.com: https://www.businesswire.com/news/home/20260513239731/en/