SET adds new listed securities : MRK03's units to be traded on October 15, 2026

Listing Listing : Depositary Receipt (DR) DR type : Depositary Receipt Representing Interest from Underlying Foreign Securities DR Name : DR ON MERCK & CO., INC. (MRK) ISSUED BY PI SECURITIES PUBLIC COMPANY LIMITED DR Symbol : MRK03 Secondary market : SET Listed date : 12-Oct-2026 Trading date : 15-Oct-2026 Trading Session : Day and Night Trading Session SEC Issuing Limit (Unit) : 10,000,000,000 Conversion Ratio (DR : Underlying) : 2,000 : 1 Offering type : Direct listing Offering Price (Baht per Unit) : 2.34 Description : DR selling price is the price calculated by the issuer based on the market price of the underlying foreign security, converted using a reference rate and exchange rate, and including the applicable administrative expenses incurred in buying foreign securities. Details of underlying Underlying Type : Common stock Underlying Symbol : MRK Underlying Name : MERCK & CO., INC. (MRK) Underlying Exchange : The New York Stock Exchange (NYSE) Underlying Exchange (URL) : https://www.nyse.com/quote/XNYS:MRK Underlying Description : Healthcare company that discovers, develops, manufactures and markets prescription medicines, vaccines and animal health products. Remark : On the listed date, the temporary suspension of trading sign will be posted on DR and the sign will be removed on the trading date. ______________________________________________________________________