Instructions on exercising the right to purchase shares offered to existing shareholders

SSI SECURITIES CORPORATION

INSTRUCTIONS ON EXERCISING THE RIGHT TO PURCHASE SHARES

OFFERED TO EXISTING SHAREHOLDERS

SSI Securities Corporation (SSI) respectfully notifies the Valued Shareholders whose names appear on the List of shareholders as of the record date on December 9th, 2025 provided by Vietnam Securities Depository and Clearing Corporation regarding the timeline and procedures for exercising the rights to purchase additional shares offered to existing shareholders of the Company, details as follows:

Valued Shareholders complete the procedures for registering to exercise subscription rights, make payment and/or transfer subscription rights at the Depository Members where the Depository Accounts are opened and follow their instructions.

• Name of share: SSI Securities Corporation shares
• Type of share: Ordinary shares
• Quantity of shares offered: 415,182,958 shares
• Ratio of rights execution: 5:1 (01 share is entitled to 01 right, 5 rights are entitled to purchase 1 new share)
• Offering price: VND 15,000/share
• Principle of rounding and handling the fractional shares, decimal of shares:

• For fractional shares (if any) arising from the exercise of rights, to ensure the total number of shares offered does not exceed the approved amount, the number of additional shares each shareholder is entitled to purchase shall be rounded down to units, fractional shares (if any) shall be rounded down to zero.
• Example: On the record date, Shareholder A holds 202 shares and is entitled to 202 rights. The number of additional shares A may purchase is: (202×1)/5 = 40.4 shares. After rounding down, A is entitled to purchase 40 shares.

• Period for share subscription and payment: From December 17th, 2025 to January 8th, 2026
• Valued Shareholders who have NOT deposited shares can register to purchase shares in one of the following ways:
• Contact hotline 1900545471 and fully, accurately verify the information registered with SSI; or
• Submit the dossier directly or by post to the address in Section III. CONTACT; or
• Send the scanned copy of the dossier to the email address [email protected]
• The dossier includes:
• Application to purchase shares (according to the attached form);
• Documents attached to the Application.
• Method of payment for shares purchase: Valued Shareholders who have NOT deposited shares transfer to the following blocked account:
• Account holder: SSI Securities Corporation
• Account number: 2224224012
• At the bank: Vietnam Joint Stock Commercial Bank for Investment and Development – Thanh Xuan Branch

Payment content: [Shareholder name] [Passport/Enterprise Registration Certificate Number] pays for [quantity] SSI shares in 2025.

Notes:

• Please refer to the detailed information about the offered shares in the Notice on public offering at the link: Disclose the Notice on public offering.
• If Valued Shareholders do not register to purchase shares within the specified time above, it will be assumed that Valued Shareholders have waived the priority rights to purchase these shares.

• Period for registering to transfer subscription rights: From December 17th, 2025 to December 30th, 2025
• Valued Shareholders who have NOT deposited shares can register to transfer subscription rights by submitting the dossier directly to the address in Section III. CONTACT.  
• The dossier includes:
• Application to transfer subscription rights (according to the attached form);
• Personal income tax declaration of the individual shareholder transferring the subscription rights;
• Attached documents.
• Shareholders who own the subscription rights can transfer the subscription rights to the other party and can only transfer once. The transferee is not allowed to transfer for the third party.
• After SSI confirms the completion of the subscription rights transfer procedure, the transferee shall carry out the procedure for registering to purchase shares according to the provisions of Section II.2 above.
• SSI Securities Corporation will collect the personal income tax on the transfer of subscription rights of individual shareholders at a rate of 0.1% of the securities transfer price per transaction according to the legal provisions. Shareholders who have NOT deposited shares and intend to transfer subscription rights shall pay or transfer personal income tax to the following account:

Distribution time: expected in February 2026 (after completing the procedures for registering additional securities at Vietnam Securities Depository and Clearing Corporation and additional listing at Hochiminh Stock Exchange).

For further information, Valued Shareholders please contact hotline 1900545471 or follow the information below:

Sincerely,