[eDisclosure Notice] KOSDAQ - 21st

< Major Announcements After Market Close >

◆Korea SE=Change of largest shareholder from Nam Jin-gi and 4 others to Nam Hong-gi and 5 others

◆Simtek=Investing 107.1 billion KRW to establish a new factory to respond to increased demand for MSAP substrates with 4 or more layers. Change from sole CEO Choi Si-don to co-CEOs Choi Si-don and Kim Young-gu

◆HusenTech=Signed a circuit card assembly supply contract worth 1.9 billion KRW with Korea Defense Industry. Change from sole CEO Kang Si-cheol to co-CEOs Kang Si-cheol and Lee Joo-seok

◆DHP Korea=Declared a cash dividend of 100 KRW per common share

◆AP Satellite=Decided to dispose of 21,000 shares of treasury common stock worth approximately 200 million KRW

◆Fine Technics=Decided to provide a debt guarantee worth 11.4 billion KRW to subsidiary Vietnam VINA CNS

◆EcoPro BM=Fire occurred at Cheongju Ochang plant in Chungbuk. Loss amount currently being confirmed

◆Samco=Resolved formal delisting reasons. Trading suspension continues during the improvement period until April 14 this year

◆Antrogen=Failed to prove efficacy in domestic Phase 3 clinical analysis of ALLO-ASC-DFU targeting Wagner grade 1 and 2 diabetic foot ulcer patients