Công bố thông tin – CC1 – Page 4

Board of Directors' Resolution on Approving Contracts and Transactions

Notice of change in the number of outstanding voting shares

Report on the results of the treasury stock sale transaction.

Announcement of personnel changes (appointment of Mr. Le Viet Hoai)

Resolution of the Board of Directors approving the credit limit granted by Saigon Thuong Tin Commercial Joint Stock Bank – District 4 Branch

On September 22, 2025, the Company received Official Letter No. 5422/UBCK-QLCB dated September 19, 2025 from the State Securities Commission regarding receipt of the report on the sale of treasury shares of CC1.

Announcement of treasury stock sale

Announcement of personnel changes (Appointment of Mr. Hoang Trung Thanh)

Board of Directors Resolution on approving the divestment of CC1's capital contribution in Hai Phong Coastal Road Investment Company Limited (60%).

Decision of Construction Corporation No. 1 – JSC regarding not participating in additional capital contribution to CC1 Asset Management and Services Company Limited.

Resolution of the Board of Directors regarding the Change of the Company's Seal Design

Corrections and updates to some content in the Company's Governance Report for the first six months of 2025.

Resolution of the Board of Directors on Approving the Credit Limit Granted by Tien Phong Commercial Bank – Large Corporate Investment & Customer Center 4

Resolution of the Board of Directors on Approving the Credit Limit Granted by Vietnam Joint Stock Commercial Bank for Industry and Trade – Thu Thiem Branch

Resolution of the Board of Directors on the Approval of the Implementation of the Plan to Sell Treasury Shares

Resolution of the Board of Directors on the termination of operations and dissolution of the An Giang Provincial Branch of Construction Corporation No. 1 – JSC.

Announcement of the first trading day for additional trading registration: August 6, 2025

This table provides information on corporate governance.