Sirnaomics Ltd. announces that Dr. Xiaochang Dai has been re-designated from a non-executive Director to an executive Director with effect from July 19, 2022. The Board has also received a letter of resignation from Mr. Jiajun Lai to resign as a non-executive Director with effect from August 31, 2022, as Mr. Lai wishes to devote more time to his other commitments. Dr. Dai, aged 59, was appointed as a non-executive Director in December 2021.

Following Dr. Dai's Re-designation, he becomes an executive Director. Dr. Dai participates in the formulation of the general corporate business plans, strategies and major decisions of the Company through the Board. Dr. Dai is a member of the remuneration committee of the Company (the "Remuneration Committee").

Dr. Dai currently serves as a professor at School of Chemical Science and Engineering, Yunnan University since 2000, the executive director of Value Measure Investments Limited since January 2011 and the executive director of Trinity Power Limited since March 2012, respectively. Dr. Dai also serves as a director of Shenzhen Yunda Technology Industry Co. Ltd. since August 2001.

Prior to joining the Group, Dr. Dai served as the executive director, director of scientific advisory committee, director of postdoctoral workstation, chief scientist at Yunda Technology Co. Ltd., the chairman and general manager of Dalian High-tech Biopharmaceutical Co. Ltd. in 2001, the chairman of Yunnan Walvax Biopharmaceutical Co.

Ltd., the predecessor of Walvax Biotechnology Co. Ltd. from 2002 to 2004, the managing director of Kunming Baker Norton Pharmaceutical Co. Ltd. in 2005, and the president of Kunyao Group Co.

Ltd. from September 2015 to December 2017. Dr. Dai obtained a bachelor's degree in chemistry in School of Chemistry, Yunnan Normal University in the People's Republic of China (the "PRC") in July 1983, a master's degree in biochemistry in Shanghai Institute of Biochemistry, Chinese Academy of Sciences in the PRC in July 1988, and a doctoral degree in chemistry from The Scripps Research Institute in San Diego, California, the United States of America (the "U.S.") in September 1998, respectively. He also conducted postdoctoral research in the laboratory of John N. Ablelson, Division of Biology and Biological Engineering, California Institute of Technology in the U.S. from November 1998 to December 1999.