Date of Publication: 28 April, 2025

To: Esteemed Shareholders

Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “The 1st Quarter Separate financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 125/2025/TOS-GT on the change in PAT on the 1st Quarter Separate financial statements exceeding 10% compared to the same period in 2024.”. Please kindly find the detailed document attached.

Sincerely,