Announcement auction - GELEX INFRASTRUCTURE JOINT STOCK COMPANY

The name of the Share Ownership Company

GELEX INFRASTRUCTURE JOINT STOCK COMPANY

The name of the Auction Issuer

GELEX INFRASTRUCTURE JOINT STOCK COMPANY

Address

GELEX Building, 52 Le Dai Hanh Street, Hai Ba Trung Ward, Hanoi City

Business line

Electricity production

Chartered capital

7,900,000,000,000 VND

Par value

10,000 VND/share

Beginning price

28,000 VND/share

Minimum number of shares to buy

100 shares

Maximum number of shares to buy

5,000,000 shares

Number of shares for foreigners

5,000,000 share

An auction method

Each investor is given one Auction Participation Form and can only record a maximum of 02 (two) purchase prices; the minimum purchase volume for each price is 100 shares and is placed in multiples of 100; the total purchase volume of all prices must be equal to the number of registered shares.

Step price: 100 VND/share

Registration time and place

+ Time: From 08:00 am on December 4^th, 2025 to 4:00 pm on December 23^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 4^th, 2025 to 4:00 pm on December 23^th, 2025

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

Time and place to submit the Auction slip

+ Time: Before 3:00 pm on December 29^th, 2025
+ Place: Drop Auction slip directly into the box at the PHS branches/transaction offices mentioned above.

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

Time and place for Auction

+ Time: 9:00 pm on December 31^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 January 2^nd, 2026 to January 7^th, 2026

Time for refund the deposit

From January 2^nd, 2026 to January 8^th, 2026