隧道股份：控股股东增持2.00%

Group 1 - The controlling shareholder, Shanghai Urban Construction (Group) Co., Ltd., has increased its stake in the company by acquiring 62.88 million A-shares, representing 2.00% of the total share capital [1] - The total amount invested in this share acquisition is 399 million yuan [1] - Following this transaction, the shareholding ratio of the controlling shareholder has risen from 30.49% to 32.49% [1]