日科化学：股东赵东升拟减持不超1.29%公司股份

Group 1 - The core point of the article is that Zhao Dongsheng, a shareholder of RIKEN Chemical (300214), plans to reduce his holdings by up to 5.9969 million shares, which represents no more than 1.29% of the company's total share capital [1] Group 2 - Zhao Dongsheng holds a total of 5.9969 million shares in the company [1] - The reduction will be executed through centralized bidding and block trading methods [1] - The announcement was made on the evening of September 15 [1]