PHARMA RESEARCH BIO Co., Ltd announced a private placement of 4th unregistered coupon nonguaranteed private placement convertible bonds for gross proceeds of KRW 30,000,000,000 on November 24, 2021. The transaction included participation from returning investor PharmaResearch Co., Ltd. The company expects to close the transaction on November 26, 2021. The transaction was approved by the board of directors of the company.