Y-Optics Manufacture Co., Ltd. (KOSDAQ:A066430) announced a private placement of and 18th Unregistered coupon unguaranteed private convertible bond for gross proceeds of KRW 15,000,000,000 from JITS Co., Ltd. for KRW 10,000,000,000 and Entropy Investor Co., Ltd. for KRW 5,000,000,000. and 17th unregistered coupon unguaranteed private convertible bonds for gross proceeds of KRW 8,000,000,000 from IBK Securities Co. Ltd., Investment Arm on May 18, 2018. The bonds will be issued at par. The 18th series bond bear carries no coupon rate and yield to maturity of 3% and will mature on June 10, 2021. The 18th series bonds are convertible into 1,824,817 common shares at a fixed conversion price of KRW 8,220 per share. The conversion period of 18th series bonds will start on June 10, 2019 and will end on May 10, 2021 with the subscription date is May 18, 2018 and payment date is June 10, 2018. The 17th series bonds will mature on May 23, 2021 and will not carry yield to maturity and coupon. The 17th series bonds will be 100% converted into common shares of the company at a fixed conversion price of KRW 8,220 per share from May 23, 2019 to April 23, 2021. The payment date for the same is expected to close on May 23, 2018. The board of directors of the company approved the transaction.