Dear Valued Bondholders,

We refer to the bond TCX12505 issued by Techcom Securities Joint Stock Company (the “Issuer”) on 31 December 2025 (the “Bond”) in accordance with the Bond’s Terms and Conditions.

Techcom Securities Joint Stock Company hereby announces the record date for determining bondholders for the purpose of registration and centralized depository of the Bond at the Vietnam Securities Depository and Clearing Corporation (“VSDC”), as well as registration for centralized trading of the Bond on the Hanoi Stock Exchange (“HNX”), with the summary details as follows:

• Record date: 12:00 noon, 08 January 2026
• Deadline for updating bondholder identification information: Prior to 12:00 noon, 08 January 2026
• Deadline for opening a securities trading account and submitting documents for centralized depository: Prior to 12:00 noon, 08 January 2026

The Issuer’s Official Notice is enclosed herewith.

Sincerely