Confirmation of Balances in Custody. February 4, last day

Dear participants

We remind you that the period for confirming balances in custody for the last quarter of
2025 ends on February 4, 2026.

As reported in the January 6 bulletin, we have a platform under development, where we
have been incorporating modules for confirming balances in custody. We are currently
carrying out the final process in parallel to confirm the balances of fixed-income issuers
and financial intermediaries.

As a result, the process will proceed as follows:

• Confirmation of balances in custody made by depositors and issuers of equity: It is done through a digital application only.
• Confirmation of fixed income and financial intermediation balances, meaning the institution as an issuer: This is done concurrently using confirmation methods through letters sent by the Supervisory Committee auditors.
• The link to access the balance confirmation platform is on the DCV website at www.dcv.cl, in the ‘Customer Accesses’ section under the ‘Balance Confirmation’ option.

It is essential that users assigned to perform this task have the necessary profiles in the
digital application for balance confirmation. Each participant’s security administrator must
perform this activity on the DCV Evolution Platform (DCVe). If any participants lack access
to DCVe, they should contact the Help Desk, MAC, to request the necessary authorization.

For more details, please read the application’s operating manual. It provides a detailed description of the process.