Invitation to Bid

To: Interested Partners

Vietnam National Industry - Energy Group (PETROVIETNAM) respectfully invites interested partners to participate in the Open Bidding Round for Block 17, Offshore Vietnam. This presents an opportunity for investors to access and evaluate investment in one of the petroleum potential blocks located in the Cuu Long Basin, Offshore Vietnam.

• Key Information on the bidding round:

• Scope of Bidding: Block 17, Cuu Long Basin, Offshore Vietnam
• Bid Registration: From 09:00 on June 01, 2026 to 16:00 on June, 15, 2026 (during working hours)
• Data Review: From 09:00 on June 18, 2026 to 16:00 on July, 31, 2026
• Tender Dossier Issuance: From 09:00 on August 03, 2026 to 11:00 on August, 14, 2026 (during working hours)
• Deadline for Bid Submission: 15:00 on September 16, 2026 (Hanoi time)
• Bidding Method: Open Tender

• Registration Instructions:

Interested partners are kindly requested to submit an Expression of Interest (EOI) to the following address:

Vietnam National Industry - Energy Group (PETROVIETNAM)

Address: 18 Lang Ha, Giang Vo, Hanoi, Vietnam

Attn.: Mr. Vu Dao Minh, General Manager of Exploration & Production Division

Email: [email protected]

Tel: + 84 24 3825 2526 (ext 6717)

Fax: + 84 24 3826 5942

Upon receipt of the EOI, we will provide the relevant documents and detailed guidance on the bidding participation process.

We look forward to your interest and participation.

Sincerely

Le Manh Cuong

President & CEO Vietnam National Industry - Energy Group