隧道股份：关于控股股东增持股份结果的公告

Group 1 - The core point of the article is that Tunnel Corporation announced the completion of a share buyback plan by its controlling shareholder, Shanghai Urban Construction Group, which involved acquiring a total of 62,881,834 A-shares, representing 2.00% of the company's total share capital [2][3] - The total amount spent on the share buyback was approximately RMB 399,314,689.28, excluding transaction fees [2]