QCC: Report of transaction of connected institution (Vietnam Posts and Telecommunications Group)

- Name of issuer: Construction Investment and Telecommunications Infrastructure Development Joint Stock Company
- Stock code: QCC
- Securities type: Common stock
- Name of connected institution: Vietnam Posts and Telecommunications Group (VNPT)
- Name of person discharging managerial responsibility (PDMR)/Director: Mr. Le Tan Long
- Position in the listed company: Chair of the Board
- Position in the trading institution: Representative of VNPT's capital contribution at QCC
- Number of shares held by connected person/institution before transaction: 490,000 shares (32.67%)
- Type of registered transaction: Sale
- Number of shares traded: 0 shares
- Transaction value (at par value): VND0
- Number of shares held by connected person/institution after transaction: 490,000 shares (32.67%)
- Method of transaction: Public auction
- Date of transaction: From 30/07/2025 to 28/08/2025
- Reason for incomplete transaction (in case of not fully executing the registered quantity):
No investor registered to participate in purchasing the offered shares.