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.
January 5, 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 the Fully Committed Share Repurchase (FCSR)Shin-Etsu Chemical Co., Ltd. (hereinafter, the "Company") hereby announces the finalized number of acquired shares following ex post facto adjustment for Adjustment Period 5 out of five adjustment periods for the acquisition of own shares through a fully committed share repurchase (FCSR), announced on May 20, 2025. By this adjustment, all adjustments have been completed. For details, please refer to the Company's press release, titled "Notice Regarding the Acquisition of Own Shares through the Off-Auction Share Repurchase Trading System (ToSTNeT-3) (Acquisition of Own Shares through Fully Committed Share Repurchase (Japanese ASR))" dated May 20, 2025.
Overview of ex post facto adjustment
(1)
Average share price
4,651.1632 yen (arithmetic average of VWAP over the period from May 22,
2025 to December 30, 2025 x 99.78%)
(2)
Number of shares if acquired at the
average share price
17,042,906 shares (the number of shares acquired if one-fifth of the share purchase from Nomura Securities Co., Ltd. executed via ToSTNeT-3 on
May 21, 2025 was executed at the average share price)
(3)
Number of shares acquired
17,319,100 shares (one-fifth of the number of shares acquired through share purchase from Nomura Securities Co., Ltd., executed via ToSTNeT-3 on
May 21, 2025)
(4)
Adjustment number of shares
276,100 shares decrease (number of shares if acquired at the average share price - number of shares acquired)
(5)
Adjustment method
Delivery to the warrant holder upon the exercise of the share warrant
Number of acquired shares after ex post facto adjustment
86,585,000 shares(Includes 798,100 shares acquired from shareholders other than Nomura Securities Co., Ltd..)
This document is a press release to publically announce the ex post facto adjustment for the Fully Committed Share Repurchase (FCSR). It is not intended in any way to solicit investment or serve any similar purposes.