Importation of an Excel spreadsheet to speed up the Order Issuer maintenance process. The change will streamline and automate requests for lot addition, modification and removal.

A new functionality was provided to send HTML brokerage trade confirmation through the SMTP server. This new technology allows users to be more agile and practical when sending brokerage trade confirmation.

An API was created to add accounts to the Tesouro Direto Activity. This new technology will enable querying information with greater security and resilience.

An API was created to make registration changes to accounts in the Current Account Activity. This new technology will enable querying information with greater security and resilience.

An API was created to automate the Derivatives brokerage settlement. This new technology enables querying information with greater security and resilience.

An API was created to carry out the entry of Derivatives trades. This new technology enables querying information with greater security and resilience.

With this delivery, banks will have easier access to the trading data for the Casado de Dólar (CSD2) strategy, including U.S. Dollar Futures data that makes up the strategy. Therefore, the banks' back office will have access to the same data that traders already have and this will bring greater efficiency to the formalization of transactions with the Central Bank of Brazil. For this, the following fields will be added to the BMC0015 message: • Code of the brokerage house executing the trade • Futures trade number, futures price, CSD trade number • CSD price • Trade quantity

The LFC (Physical Settlement and Commodity Certification System) screen, where sellers’ invoice data is filled in, will have its layout improved. The new screen will be more intuitive and will have new filter options. The change is aimed at facilitating input of data thus bringing greater agility to the process.

A functionality will be made available to the Underwriter who will offer an option to confirm the financial events in a batch by means of the upload of a CSV file. This feature will supplement the current process of confirmation of financial events that makes the Underwriter validate, on a unit basis, the financial amounts of the events that will be paid.

As well as intraday risk calculation, participants will now have access to T-1 risk calculation.

This initiative aims to rectify an error where not all the investors’ names appeared on the Client List.

Analysis of the dashboard platform to implement improvements to users.

The transfer time with change of ownership for Tesouro Direto bonds will be reduced from 4 days to a maximum of 1 day. Transfers are used in situations like estate, divorce and donation in the amounts established by the Court. No fee will be charged in advance by B3. The due fees will be transferred to investors proportionally according to the amount specified in the transaction.

B3 will reduce the FRC Round Lot in electronic calls from 100 to 10 contracts by matching the regular trading session lot to the call lot. This improvement is aimed at facilitating clients’ access to product liquidity in electronic calls. To mitigate the risk of distortion of the FRC curve in less liquid maturities, the settlement price for each maturity will be determined by the call only when there are more than 100 contracts traded in the call for the maturity in question.

Review of derivatives reports, warning screen and product notifications for better usability, besides the implementation of metrics and monitoring of use for continuous evolution.

B3 will improve the accuracy criteria of the calculation models offered by CALC fixed income calculation tool. As a result, we will replicate the calculation results delivered by CALC in a more agile, efficient and accurate way.

We created the broker entry option for clients of give-ups received. In this option, the system will carry out the reverse entry to integrate the financial module, thus offering greater agility and efficiency.

We have included a rule in the catalog (bvmf.196 message) informing that the target group has to be filled in cases where the delivered underlying asset is different from the original.

Improvement to GRC buyback execution. Creation of a message flow for executions by rule exception.