DEO CA TRAFFIC INFRASTRUCTURE INVESTMENT JOINT STOCK COMPANY (HHV)

GUIDELINES FOR EXERCISING STOCK SUBSCRIPTION RIGHTS FOR EXISTING SHAREHOLDERS

Deo Ca Traffic Infrastructure Investment Joint Stock Company (HHV) would like to formally notify our Investors of the timeline and procedures for the exercise and transfer of stock purchase rights (applicable to Shareholders listed in the Shareholder Registry as of the record date, December 26, 2025) as follows:

I. OFFERING INFORMATION

• Stock name: Stock of Deo Ca Traffic Infrastructure Investment Joint Stock Company.
• Stock type: Common share.
• Total offering volume: 49,743,300 shares.

• Exercise ratio: 10:1 (Each share is entitled to 01 right; every 10 rights allow the purchase of 01 new share).

• Offering price: 10,000 VND/share.
• Rounding and fractional share handling: The number of shares eligible for purchase will be rounded down to the nearest whole unit. Any decimal fractional shares (if any) will be cancelled.
• Example: On the Record Date, Shareholder Nguyen Van A owns 178 shares. Therefore, Shareholder A is entitled to 178 rights, equivalent to the right to purchase 17.8 new shares. Under the fractional share handling policy, after rounding down to the nearest unit, the number of new shares Shareholder A is eligible to purchase is 17 shares. The fractional 0.8 share will be cancelled.

II. FOR SHAREHOLDERS WITH DEPOSITED SHARES

Shareholders shall complete procedures for registration, payment, and/or transfer of subscription rights at the Securities Companies where they maintain their securities custody accounts, and comply with the instructions provided by such companies.

• Subscription and payment period: From January 06, 2026, to January 27, 2026.
• Rights transfer period: From January 06, 2026, to January 23, 2026.

III. FOR SHAREHOLDERS WITH UNDEPOSITED SHARES

1. Procedures for share subscription

• Subscription and payment period: From January 06, 2026 to January 27, 2026.
• Registration methods:
  • At Deo Ca Traffic Infrastructure Investment Joint Stock Company (Details in Section
    V. CONTACT).
  • Submission Period: During business hours on working days
  • Application includes:
    • Subscription registration form (as per the attached template);
    • Required supporting attached documents.

2. Payment method: Shareholders with UNDEPOSITED shares shall remit payment to the following escrow account:

• • Account holder: Deo Ca Traffic Infrastructure Investment Joint Stock Company
  • Account Number: 110002983675
  • Bank: Vietnam Joint Stock Commercial Bank for Industry and Trade – Da Nang Branch.
  • Payment description: <Shareholder name>_<ID/Passport/Trading Code/Enterprise Registration No.>_Mua_<Number> cp HHV.
    • Example: Nguyen Van A_123456789101_Mua_10,000 cp HHV

Notes:

• For detailed information regarding the offering, please refer to the “Notice of Additional Stock Issuance to Existing Shareholders” at the following link: Link
• Failure to register and complete payment within the aforementioned period will be deemed as a waiver of your priority subscription rights

3. Procedures for transfer of subscription rights

• Transfer registration period: From January 06, 2026 to January 23, 2026.

• Shareholders with UNDEPOSITED shares must register the transfer of rights by submitting the application in person at the address provided in Section III (CONTACT).
• Application includes:
  • Request for Transfer of Subscription Rights (as per the attached template);
  • Personal Income Tax (PIT) declaration form for individual shareholders transferring rights;
  • Supporting attached documents.
• Regulations: Subscription rights may only be transferred once (The transferee is not permitted to transfer the rights to a third party).

IV. DISTRIBUTION OF SHARES: Expected in late 03/2026. Following the completion of additional securities registration with the Vietnam Securities Depository and Clearing Corporation (VSDC) and additional listing procedures at the Ho Chi Minh City Stock Exchange (HOSE).

V. CONTACT

For further details, please contact:

• Finance Department – Deo Ca Traffic Infrastructure Investment Joint Stock Company
• Address: Km 11+500 – South Access Road to Hai Van Tunnel, Hai Van Ward, Da Nang City, Vietnam
• Tel: (0236) 3730 574 – Fax: (0236) 3842 713
• Email: info@hhv.com.vn

Best regards.