Semi-annual Consolidated financial statements for 2026 of Tan Cang Offshore Services JSC.

Date of Publication:    29 August, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “Semi-annual Consolidated financial statements for 2026 of Tan Cang Offshore Services JSC.”. Please kindly find the detailed document attached. Sincerely,

Semi-annual Separate financial statements for 2026 of Tan Cang Offshore Services JSC.

Date of Publication:    29 August, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “Semi-annual Separate financial statements for 2026 of Tan Cang Offshore Services JSC.”. Please kindly find the detailed document attached. Sincerely,

The 15th amended Enterprise Registration Certificate dated 13th August, 2026

Date of Publication:    14 August, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “The 15th amended Enterprise Registration Certificate dated 13th August, 2026”. Please kindly find the detailed document attached. Sincerely,

Charter of Tan Cang Offshore Services JSC. approved on 10th August, 2026

Date of Publication:    11 August, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “Charter of Tan Cang Offshore Services JSC. approved on 10th August, 2026”. Please kindly find the detailed document attached. Sincerely,

BOD Resolution No. 30/2026/NQ-HDQT dated 10th August, 2026 on Approval of the amendment to the Company’s Charter, the adjustment of the information on the registered securities, the amendment to the trading registration for shares issued to increase the Company’s charter capital from owners’ equity, and the amendment to the Enterprise Registration Certificate

Date of Publication:   10 August, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “BOD Resolution No. 30/2026/NQ-HDQT dated 10th August, 2026 on Approval of the amendment to the Company’s Charter, the adjustment of the information on the registered securities, the...

BOD Resolution No. 29/2026/NQ-HDQT dated 7th August, 2026 on Approval of contracts/transactions between Tan Cang Offshore Services JSC. and the branches of Tan Cang Offshore Travel and Flight Services JSC.

Date of Publication:   07 August, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “BOD Resolution No. 29/2026/NQ-HDQT dated 7th August, 2026 on Approval of contracts/transactions between Tan Cang Offshore Services JSC. and the branches of Tan Cang Offshore Travel and...

Notice of change in number of shares with voting rights & Report on Results of the share issuance to increase charter capital from owner’s equity for 2026

Date of Publication:  03 August, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “Notice of change in number of shares with voting rights & Report on Results of the share issuance to increase charter capital from owner’s equity for 2026”....

Report on Corporate Governance for the First Half of 2026

Date of Publication:  29 July, 2026 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 2026”. Please kindly find the detailed document attached. Sincerely,

The 2nd Quarter Separate financial statements for 2026 of Tan Cang Offshore Services JSC.

Date of Publication:  28 July, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “The 2nd Quarter Separate financial statements for 2026 of Tan Cang Offshore Services JSC.”. Please kindly find the detailed document attached. Sincerely,

The 2nd Quarter Consolidated financial statements for 2026 of Tan Cang Offshore Services JSC.

Date of Publication:  28 July, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “The 2nd Quarter Consolidated financial statements for 2026 of Tan Cang Offshore Services JSC.”. Please kindly find the detailed document attached. Sincerely,

Information disclosure on the Signing of the Audit Contract for the 2026 Financial Statements

Date of Publication:  16 July, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “Information disclosure on the Signing of the Audit Contract for the 2026 Financial Statements”. Please kindly find the detailed document attached. Sincerely,

Announcement on Share issuance to increase charter capital from owner’s equity (replacing the Announcement dated 9th July, 2026)

Date of Publication: 14  July, 2026 To: Esteemed Shareholders Tan Cang Offshore Services JSC. respectfully presents to our Shareholders and Interested Investors the “Announcement on Share issuance to increase charter capital from owner’s equity (replacing the Announcement dated 9th July, 2026)”. Please kindly find the detailed document attached. Sincerely,