Announcement of Publication of "Niterra Report 2026"

NAGOYA, JAPAN, October 29, 2026 ― Niterra Co., Ltd., Japan's leading manufacturer of spark plugs and sensors with an evolving portfolio focused on ceramics and beyond, is pleased to announce the publication of its Integrated Report for the fiscal year 2026, "Niterra Report 2026".

The full "Niterra Report 2026" is available starting today on our corporate website at the following link:

URL: https://www.niterragroup.com/english/ir/library/integration_report.html

Our company has been publishing integrated reports since 2017 to provide all stakeholders with a deeper understanding of the Niterra Group's path toward creating medium- to long-term corporate value.

Niterra Report 2026 presents a series of stories, centered on the launch of our new management structure, covering the progress and challenges of the Mid-term Management Plan 2030, the roles of each form of capital responsible for its realization, and the governance supporting management.

■ Key Highlights of "Niterra Report 2026"

1. 1. The next stage of transformation envisioned by the new management structure
   Both messages from the Chairman and the new President clarify the direction that the new management team aims to take. Based on the progress and challenges of the Mid-term Management Plan 2030, these messages also convey a determination to further transform the company.

1. 2. The path to achieving the Mid-term Management Plan, as outlined by the head of each business group
   The heads of each business group discuss the role that each business will play in achieving the Mid-term Management Plan 2030. These messages explore the business environment, look back on past initiatives, as well as outline future growth strategies and outlooks.

1. 3. Reinforcing the connections between management strategy and each capital strategy
   Messages from officers responsible for each form of capital--finance, human resources, intellectual property, and manufacturing--clarify the role of each form of capital in achieving the Mid-term Management Plan 2030. These messages present the progress made so far, the identified challenges, and future action plans in the words of the officers in charge.

1. 4. Present the effectiveness of governance from the perspective of Outside Directors
   Through the roundtable discussion with Outside Directors and various messages, each Outside Director presents their perspective on management, their understanding of challenges, and themes that should be further discussed.

About Niterra
The Niterra Group will continue to strive for high-quality communication with all stakeholders through this report as we work to enhance our corporate value.
Founded in Nagoya, Japan, in 1936, Niterra Co., Ltd. (formerly NGK SPARK PLUG CO., LTD.) is renowned for its NGK-branded spark plugs and NTK-branded ceramic products. Niterra, a coined word combining the Latin words "niteo" (shine) and "terra" (Earth), was introduced in April 2023 to express the reborn company's commitment to sustainability through an evolving portfolio focused on ceramics and beyond. Under the corporate message "IGNITE YOUR SPIRIT", Niterra is now expanding into the growth fields of mobility, semiconductors, and environment & energy. The company's consolidated revenues in fiscal 2025 (to March 2026) totaled 731.2 billion yen. Niterra has 30 bases in Japan and 58 overseas, and approximately 16,000 employees worldwide. Please visit https://www.niterragroup.com/english/