Công bố thông tin – CC1 – Page 5

On June 29, 2026, Construction Corporation No. 1 – JSC received a resignation letter from Ms. Tran Thi Ngoc Thuy (in English) from the position of Chief Accountant.

On June 29, 2026, Construction Corporation No. 1 – JSC received a resignation letter from Ms. Tran Thi Ngoc Thuy (in Vietnamese) from the position of Chief Accountant.

Resolution of the Board of Directors on the approval of the use of the credit limit granted by Nam A Commercial Bank - Ham Nghi Branch (in English)

Resolution of the Board of Directors on the approval of the use of the credit limit granted by Nam A Commercial Bank - Ham Nghi Branch (in Vietnamese)

Decision on the transfer of CC1's capital contribution in Dai Ngai Industrial Park Co., Ltd. (in English)

Decision on the transfer of CC1's capital contribution in Dai Ngai Industrial Park Co., Ltd. (in Vietnamese)

Resolution of the Board of Directors on approving amendments to the Charter, registering changes to the Business Registration Certificate, registering additional securities with VSDC, and registering additional transactions with HNX (in English)

Resolution of the Board of Directors on approving amendments to the Charter, registering changes to the Business Registration Certificate, registering additional securities with VSDC, and registering additional transactions with HNX (in Vietnamese)

CC1 received official letter No. 5766/UBCK-QLCB dated June 23, 2026, from the State Securities Commission regarding the receipt of the report on the results of CC1's private placement of shares (in English).

CC1 received official letter No. 5766/UBCK-QLCB dated June 23, 2026, from the State Securities Commission regarding the receipt of the report on the results of CC1's private placement of shares (in Vietnamese).

Report on changes in ownership by related investor groups that are major shareholders, investors holding 5% or more shares (in English)

Report on changes in ownership of related investor groups that are major shareholders, investors holding 5% or more shares (Vietnamese)

Report on changes in ownership by major shareholders, investors holding 5% or more shares (in English)

Report on changes in ownership of major shareholders, investors holding 5% or more shares (in Vietnamese)

Report on insider stock transactions (in English)

Report on insider stock transactions (in Vietnamese)

Notice of change in the number of outstanding voting shares (in English)

Notice of change in the number of outstanding voting shares (in Vietnamese)