The 2025 Consolidated financial statements of Tan Cang Offshore Services JSC. and the Explanation document No. 063/2026/TOS-GT on explanation for the change in PAT on the 2025 Consolidated financial statements exceeding 10% compared to 2024

Date of Publication: 13 March, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “The 2025 Consolidated financial statements of Tan Cang Offshore Services JSC. and the Explanation document No. 063/2026/TOS-GT on explanation for the change in PAT on the 2025...

The 2025 Separate financial statements of Tan Cang Offshore Services JSC. and the Explanation document No. 061/2026/TOS-GT on explanation for the change in PAT on the 2025 Separate financial statements exceeding 10% compared to 2024

Date of Publication: 13 March, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “The 2025 Separate financial statements of Tan Cang Offshore Services JSC. and the Explanation document No. 061/2026/TOS-GT on explanation for the change in PAT on the 2025...

Report on corporate governance for 2025

Date of Publication: 29 January, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “ Report on corporate governance for 2025”. Please kindly find the detailed document attached. Sincerely,

The 4th Quarter Consolidated financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 018/2026/TOS-GT on the change in PAT on the 4th Quarter Consolidated financial statements exceeding 10% compared to the same period in 2024

Date of Publication: 28 January, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “ TThe 4th Quarter Consolidated financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 018/2026/TOS-GT on the change in PAT on...

The 4th Quarter Separate financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 019/2026/TOS-GT on the change in PAT on the 4th Quarter Separate financial statements exceeding 10% compared to the same period in 2024

Date of Publication: 28 January, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “ The 4th Quarter Separate financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 019/2026/TOS-GT on the change in PAT on...

BOD Resolution No. 01/2026/NQ-HDQT dated 23rd January, 2026 on Approval of contracts/transactions between TCO and its internal persons, affiliated persons of internal persons, or affiliated persons of TCO

Date of Publication: 23 January, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “ BOD Resolution No. 01/2026/NQ-HDQT dated 23rd January, 2026 on Approval of contracts/transactions between TCO and its internal persons, affiliated persons of internal persons, or affiliated persons...

The 3rd Quarter Separate financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 329/2025/TOS-GT on the change in PAT on the 3rd Quarter Separate financial statements exceeding 10% compared to the same period in 2024

Date of Publication: 28 October, 2025 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “ The 3rd Quarter Separate financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 329/2025/TOS-GT on the change in PAT on...

The 3rd Quarter Consolidated financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 327/2025/TOS-GT on the change in PAT on the 3rd Quarter Consolidated financial statements exceeding 10% compared to the same period in 2024

Date of Publication: 28 October, 2025 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “ The 3rd Quarter Consolidated financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 327/2025/TOS-GT on the change in PAT on...

Semi-annual Consolidated financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 262/2025/TOS-GT regarding the change in PAT on the semi-annual Consolidated financial statements exceeding 10% compared to the same period in 2024

Date of Publication: 29 August, 2025 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “ Semi-annual Consolidated financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 262/2025/TOS-GT regarding the change in PAT on the semi-annual...

Semi-annual Separate financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 260/2025/TOS-GT regarding the change in PAT on the semi-annual Separate financial statements exceeding 10% compared to the same period in 2024

Date of Publication: 29 August, 2025 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “Semi-annual Separate financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 260/2025/TOS-GT regarding the change in PAT on the semi-annual Separate...

Report on corporate governance for the First Half of 2025

Date of Publication: 30 July, 2025 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “Report on corporate governance for the First Half of 2025”. Please kindly find the detailed document attached. Sincerely,

The 2nd Quarter Consolidated financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 214/2025/TOS-GT on the change in PAT on the 2nd Quarter Consolidated financial statements exceeding 10% compared to the same period in 2024

Date of Publication: 29 July, 2025 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “The 2nd Quarter Consolidated financial statements for 2025 of Tan Cang Offshore Services JSC. and the Explanation document No. 214/2025/TOS-GT on the change in PAT on the...