The following statement is an English-language translation of the original Japanese-language document provided for your convenience. In the event there is any discrepancy between the Japanese and English versions, the Japanese version is presumed to be correct.
To whom it may concern:
May 20, 2026
4-1, Marunouchi 1-chome, Chiyoda-ku, Tokyo
Shin-Etsu Chemical Co., Ltd.
Yasuhiko Saitoh Representative Director / President
(Code No. 4063)
Contact: Toshiyuki Kasahara
Corporate Officer, General Manager Finance and Accounting Department
TEL: +81-3-6812-2350
Notice of the Completion of Ex Post Facto Adjustment for Acquisition of Own Shares through Accelerated Share RepurchaseShin-Etsu Chemical Co., Ltd. (the "Company") hereby announces the finalized number of acquired shares following ex post facto adjustment for the acquisition of own shares through Accelerated Share Repurchase, announced on February 16, 2026. For details, please refer to the Company's press release, titled "Notice Regarding the Acquisition of Own Shares through the Off-Auction Own Share Repurchase Trading System (ToSTNeT-3) (Acquisition of Own Shares through Accelerated Share Repurchase)" dated February 16, 2026.
Number of acquired shares after ex post facto adjustment
15,315,000 shares (Includes 229,200 shares acquired from shareholders other than Daiwa Securities Co. Ltd..)
Overview of ex post facto adjustment
(1) Average Share Price | 6,543.4091 yen (mathematical average of VWAP over the period from February 18, 2026 to May 19, 2026 x 99.9%) |
(2) Benchmark Amount | 98,712,192,600 yen (the amount of the sale of the common shares of the Company sold by Daiwa Securities Co. Ltd. in the share repurchase through the Tokyo Stock Exchange's ("TSE") off-auction own share repurchase trading system (ToSTNeT-3) on February 17, 2026) |
(3) Benchmark Number of Shares | 17,570,700 shares (the number of common shares of the Company sold by Daiwa Securities Co. Ltd. in the share repurchase through TSE's off-auction own share repurchase trading system (ToSTNeT-3) on February 17, 2026) |
(4) Adjustment number of shares | 2,484,900 shares decrease (Benchmark Number of Shares - Benchmark Amount ÷ Average Share Price) |
(5) Adjustment method | Delivery of shares to Daiwa Securities Co. Ltd. upon the exercise of the share warrant |