瑞芯微：润科欣已减持1.99%股份

Summary of Key Points Core Viewpoint - The shareholder Xiamen Runke Xin Investment Management Partnership (Limited Partnership) has reduced its stake in the company by a total of 8.3683 million shares, representing 1.99% of the company's total share capital, through both centralized bidding and block trading, with a total transaction value of 1.221 billion yuan [1] Group 1: Shareholder Actions - The shareholder executed a reduction of 4.1793 million shares through centralized bidding and 4.189 million shares through block trading [1] - The reduction was conducted between June 13, 2025, and August 11, 2025, with share prices ranging from 138.08 to 169.95 yuan per share [1] - The shareholder has decided to terminate the original plan to reduce up to 8.378 million shares, which was not to exceed 2% of the total share capital [1] Group 2: Current Holdings - After the reduction, the shareholder currently holds 19.9006 million shares, which accounts for 4.73% of the company's total share capital [1]