Announcement auction - PETROVIETNAM MAINTENANCE AND REPAIR CORPORATION

The name of the Share Ownership Company

VIETNAM NATIONAL INDUSTRY - ENERGY GROUP

The name of the Issuer

PETROVIETNAM MAINTENANCE AND REPAIR CORPORATION

Address

100 – 102 – 104 Vu Tong Phan Street, Binh Trung Ward, Ho Chi Minh City

Business line

Maintenance and repair of oil and gas facilities, …

Chartered capital

500,000,000,000 VND

Par value

10,000 VND/share

Beginning price

14,100 VND/ share

Minimum number of shares to buy

100 shares

Maximum number of shares to buy

20,500,000 shares

Number of shares for foreigners

0 share

A competitive offering method

Each investor is given a competitive offering Form and can only write a maximum of one (01) purchase price on the competitive offering Form; The purchase price must be a multiple of 100 VND; The minimum purchase volume is 100 shares and placed in multiples of 100 share; The total purchase volume at all prices is equal to the number of registered shares.

Step price: 100 VND

Volume step: 100 share

Registration time and place

+ Time: From 08:00 am on December 8^th, 2025 to 4:00 pm on December 17^th, 2025

+ Place: At Branches/ Trading Offices of PHS, detail as follow:

1. Phu My Hung Trading Offices

CR2-08 Building, 107 Ton Dat Tien, Tan Phu Ward, HCMC.

Phone: (+84 28) 5413 5478 Fax: (+84 28) 5413 5473

2. Tan Binh Branch

Park Legend Building, 251 Hoang Van Thu Street, Tan Son Hoa Ward, HCMC.

Phone: (+84 28) 3813 2401 Fax: (+84 28) 3813 2415

3. District 3 Branch

4^th Floor, D&D Tower, 458 Nguyen Thi Minh Khai, Ban Co Ward, HCMC.

Phone: (+84 28) 3820 8068 Fax: (+84 28) 3820 8206

4. District 1 Branch

Room 1003A, 10th Floor, Ruby Building, 81-83-83B-85 Ham Nghi, Sai Gon Ward, HCMC.

Phone: (+84 28) 3535 6060 Fax: (+84 28) 3535 2912

5. Thanh Xuan Branch

5^th Floor, UDIC Complex Building, N04 Hoang Dao Thuy, Thanh Xuan Ward, Hanoi.

Phone: (+84 24) 6250 9999 Fax: (+84 24) 6250 6666

6. Hai Phong Branch

2^nd Floor, Eliteco Building, 18 Tran Hung Dao, Hong Bang Ward, Hai Phong.

Phone: (+84 225) 384 1810 Fax: (+84 225) 384 1801

Time of deposit

+ Time: From 08:00 am on December 8^th, 2025 to 4:00 pm on December 17^th, 2025

+ Customer transfer deposit (10% of the total value of shares registered for competitive offering at a beginning price in VND) to an account specified in the competitive offering regulations.

Time and place to submit the competitive offering slip

+ Time: Before 3:00 pm on December 23^th, 2025
+ Place: Drop competitive offering slip directly into the box at the PHS branches/transaction offices mentioned above.

Note: Competitive offering slip must be sealed in a sealed envelope and signed by the customer's signature on the sealing edge.

Time and place for competitive offering

+ Time: 09:00 am on December 25^th, 2025

+ Place: HoChiMinh Stock Exchange (No. 16 Vo Van Kiet, Sai Gon Ward, Ho Chi Minh City).

Time for deposit to buy shares

From December 26^th, 2025 to December 31^th, 2025

Time for refund the deposit

From December 26^th, 2025 to January 2^nd, 2026