Notice Regarding the Status of Treasury Stock Acquisition (Procurement of Treasury Stock Based on the Provisions of Article 459, Paragraph 1 of the Companies Act)

Overview of Treasury Stock Acquisition

NGK Spark Plug Co., Ltd. acquired 580,200 shares of treasury stock during the period from April 1, 2026 to April 30, 2026, in accordance with Article 459, Paragraph 1 of the Companies Act. The total acquisition price amounted to 4,667,146,400 yen. Based on a resolution of the Board of Directors dated October 31, 2025, the upper limit for the number of shares that can be acquired is set at 7,200,000 shares, with an acquisition price cap of 30,000,000,000 yen, and the acquisition period is from November 1, 2025 to October 31, 2026.

Cumulative Acquisition Status and Impact on Shareholders

As of April 30, 2026, a cumulative total of 2,776,500 shares have been acquired at an acquisition price of 19,666,023,272 yen. The upper limit for acquisition as a percentage of total issued shares is set at 3.62%, and the current acquisitions have been conducted within this range. It is presumed that this forms part of the capital policy aimed at shareholder returns and stock price stabilization; however, specific usage of funds or future acquisition plans are not stated.