Dear Shareholders of VINACONEX Corporation,

On May 5, 2026, the Board of Directors of VINACONEX Corporation issued two resolutions regarding changes in the Board of Directors' personnel as follows:

- Resolution No. 1660/2026/NQ-HĐQT approving the resignation of Mr. Tran Dinh Tuan from the position of Chairman of the Board of Directors of Vietnam Import-Export and Construction Corporation for the term 2022-2027.

- Resolution No. 1666/2026/NQ-HĐQT electing Mr. Nguyen Xuan Dong as Chairman of the Board of Directors of Vietnam Import-Export and Construction Corporation for the term 2022-2027.

In accordance with Circular 96/2020/TT-BTC dated November 16, 2020, of the Ministry of Finance on information disclosure in the securities market, VINACONEX Corporation hereby sends to its shareholders Official Letter No. 1465/2026/CV-PC disclosing information on the above-mentioned matter.

Sincerely,

VINACONEX Corporation