BOD Resolution No. 18/2026/NQ-HDQT dated 23rd June, 2026 on Approval of contracts/transactions between TCO and Tan Cang Gantry JSC., Tan Cang Lach Huyen JSC., Tan Cang Information Technology Solutions JSC. and Tan Cang Maritime Services JSC.

Date of Publication:  23 June, 2026

To: Esteemed Shareholders

Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “BOD Resolution No. 18/2026/NQ-HDQT dated 23rd June, 2026 on Approval of contracts/transactions between TCO and Tan Cang Gantry JSC., Tan Cang Lach Huyen JSC., Tan Cang Information Technology Solutions JSC. and Tan Cang Maritime Services JSC.”. Please kindly find the detailed document attached.

Sincerely,