Notice Regarding the Determination of Matters Concerning the Purchase of Treasury Stock through Share Buyback and Off-Auction Treasury Stock Purchase Transaction (N-NET3) and the Cancellation of Treasury Stock

Summary of Share Buyback and Cancellation

NGK Ltd. resolved at the Board of Directors meeting on April 30, 2026, to acquire and cancel treasury stock in order to improve capital efficiency and flexibly execute capital policies aligned with the business environment. The acquisition method will be through an off-auction treasury stock purchase transaction (N-NET3) on the Nagoya Stock Exchange on May 1, 2026, with an upper limit of 6.5 million shares and a total acquisition price cap of 33 billion yen. All treasury stock acquired will be canceled on June 1, 2026.

Impact on Shareholders and Future Outlook

By repurchasing approximately 2.3% of the total issued shares from the market and subsequently canceling them, capital efficiency is expected to improve. The acquisition price will be based on the closing price on April 30, 2026, and some shares may not be acquired depending on market conditions. The cancellation will reduce the total number of issued shares, potentially improving per-share indicators. This measure is noteworthy as a flexible capital policy for future management.