B3 S A Brasil Bolsa Balcão : AGM - Distance Voting Ballot

Assembleia pendente de aprovação

DISTANCE VOTING BALLOT

Annual General Meeting (AGM) - B3 S.A. - BRASIL, BOLSA, BALCÃO to be held on 04/25/2024

Shareholder's Name

Shareholder's CNPJ or CPF

E-mail

Instructions on how to cast your vote

This form must be completed by shareholders who wish to exercise their right of remote voting as provided for in CVM Resolution No. 81 of March 29, 2022 ("CVM Resolution 81/22"). In this case it is essential that the above fields be completed with the full name (or company name, in the case of a legal entity) of the shareholder and the Individual Taxpayers Register - CPF number (or National Corporate Taxpayers Register - CNPJ, in the case of a legal entity, as well as an email address for contact if necessary. In addition, for this voting form to be considered valid and the votes cast to be included in the quorum of the Shareholders' Meeting: - All the fields below must be duly completed; - Each page must be initialed; - This form shall be signed by the shareholder or shareholder's legal representative, as the case may be and pursuant to the law, at the bottom; and - Signatures appended to the form need not be authenticated or consularized. Note: Alternatively, the Company will accept forms that have been digitally signed by means of the digital certificate issued by an entity qualified by the Brazilian Public Keys Infrastructure - ICP-Brazil or through a gold level Gov account, provided that all fields below are duly completed. Please note that the Management Proposal referred to in this form is available to shareholders on our Investor Relations website (https://ri.b3.com.br/en/) and of the Brazilian Securities Commission (www.cvm.gov.br).

Instructions for sending your ballot, indicating the delivery process by sending it directly to the Company or through a qualified service provider

Shareholders who wish to exercise their right to remote voting may: (i) complete this form and send it direct to the Company, or (ii) transmit their instructions for completion to the appropriate service providers, as detailed below:

1. Voting through service providers - Remote voting system

Shareholders who wish to exercise their right to remote voting through a service provider must deliver their voting instructions to their custody agent or to the Company's bookkeeping agent, in accordance with the agent's rules. For this purpose, shareholders must contact their custody agent or the bookkeeping agent and find out the procedures for issuing voting instructions, and the documents and information required.

The custody agents will forward the voting instructions they receive to the B3 Central Depository, which in turn will prepare a list of votes to be sent to the Company share bookkeeping agent. Under CVM Resolution 81/22, shareholders must send their instructions for completing the voting form to their custody agent or to the bookkeeping agent not later than 7 days before the date of the Meeting, i.e. by April 18, 2024, unless the agent determines a different deadline. Please note that in accordance with CVM Resolution 81/22, the B3 Central Depository, on receiving voting instructions from shareholders through their custody agents, will ignore any different instructions for a specific vote issued by the same CPF or CNPJ number. In addition, the bookkeeping agent, also in accordance with CVM Resolution 81/22, will ignore any different instructions for a specific vote issued by the same CPF or CNPJ number.

2. Forwarding of the form by shareholders directly to the Company

Shareholders who wish to exercise their right to remote voting may also do so by sending the following documents to the attention of the Investor Relations Officer ([e-mail]):

(i) a scanned copy of the Remote Voting Form disclosed on the websites of the Company and the Brazilian Securities Commission, duly completed and signed under item 4 "guidelines for completion" above, for participation in the AGM; and

(ii) a scanned copy of the documents described below, as the case may be: (a) for individuals:

• • identity document of the shareholder, with photo;

(b) for legal entities:

• • latest bylaws or articles of association and corporate documents appointing a legal representative; and

• • identity document of the legal representative, with photo.

(c) for investment funds:

• • latest bylaws of the fund;

• • bylaws or articles of association of the manager, subject to the voting policy of the fund, and corporate documents evidencing the representative's powers; and

• • identity document of the legal representative, with photo.

On receipt of the documents above, the Company will confirm receipt to the shareholders and give notice of acceptance or otherwise, pursuant to CVM Resolution 81/22.

If the voting form is sent direct to the Company is not fully completed, or not accompanied by the supporting documents referred to in item 2 above, it will be ignored and such information will be sent to the shareholder at the email address indicated in this voting form.

The documents must be sent to the Company within seven (7) days before the date of the Shareholders' Meeting, i.e. by April 18, 2024. Any voting forms received by the Company after this date will be ignored in accordance with applicable regulations.

Postal and e-mail address to send the distance voting ballot, if the shareholder chooses to deliver the document directly to the company / Instructions for meetings that allowelectronic system's participation, when that is the case.

Shareholders will be able to participate in the Shareholders' Meeting remotely (via the Microsoft Teams electronic platform), and the guidelines and data for connecting such shareholders in the electronic environment will be sent to shareholders who express their interest via [e-mail] April 23, 2024, also submitting the documents by email necessary for their participation in the Meeting as detailed in the Management Proposal available on the Company's Investor Relations websites (https://ri.b3.com.br/en/) and the Securities and Exchange Commission (www.cvm.gov.br).

Indication of the institution hired by the company to provide the registrar service of securities, with name, physical and electronic address, contact person and phone number

Bookkeeping bank: Banco Bradesco S.A.

Phone number: 0800 701 1616

Website:http://bradescocustodia.com.brE-mail:[e-mail]

Cidade de Deus, Prédio Amarelo, 2nd floor, Vila Yara, Osasco, SP, Brazil, CEP 06029-900.

Resolutions concerning the Annual General Meeting (AGM)

[Eligible tickers in this resolution: B3SA3]

1. Resolve on the managers' accounts and the Financial Statements for the fiscal year ending 12/31/2023.

[ ] Approve [ ] Reject [ ] Abstain

[Eligible tickers in this resolution: B3SA3]

2. Resolve on the allocation of the earnings for the fiscal year ending 12/31/2023, as detailed in the Management Proposal, as follows.

(i) allocate part of the corporate net profit for the fiscal year to the dividend account in the amount corresponding to R$2,540,950,000.00, of which R$2,166,950,000.00 has already been paid to shareholders through dividends and interest on equity, based on art. 57 of the Company's Bylaws, leaving a balance of R$374,000,000.00, to be distributed as dividends, equivalent to the value of R$0.06690029, per share, being that: a) the values per share are estimated and may be modified due to the sale of treasury stock to comply with the Company's Stock Grant Plan or other plans based on shares, or even due to the acquisition of shares within the scope of the Repurchase Program; b) the aforementioned payment will be made on April 5, 2024 and will be based on the calculation of the shareholding position on February 27, 2024; and c) the Company's shares were traded on the "with" condition until and including February 27, 2024, and on the "ex" dividend condition as from February 28, 2024 (ii) allocate the amounts recorded under the heading of accumulated profits for the fiscal year in the amount of R$1,387,755,386.94, to the statutory reserve and R$206,596,416.53, to the legal reserve, in accordance with art. 54, 55 and 56, §1, (ii), of the Company's Bylaws.

(ii) allocate the remainder of the amounts recorded under the heading of accumulated profits for the fiscal year to the legal reserve and to the statutory reserve, in accordance with art. 56, § 1, (ii), of the Companys Bylaws, in the respective amounts of R$206,596,416.53 and R$1,387,755,386.94.

[ ] Approve [ ] Reject [ ] Abstain

[Eligible tickers in this resolution: B3SA3]

3. Management Proposal: Resolve on the global remuneration of managers for 2024 in the amount of R$153,501,075.86, in accordance with the Management Proposal.

[ ] Approve [ ] Reject [ ] Abstain

[Eligible tickers in this resolution: B3SA3]

4. Do you wish to request the establishment of a fiscal council, under the terms of article 161 of Law 6,404, of 1976? (If the shareholder chooses "no" or "abstain", his/her shares will not be computed for the request of the establishment of the fiscal council).

[ ] Yes [ ] No [ ] Abstain

[Eligible tickers in this resolution: B3SA3]

Election of the fiscal board by single group of candidates

Chapa apresentada pela Administração

André Coji (Efetivo) / Stânia Lopes Moraes (Suplente)

Ângela Aparecida Seixas (Efetivo) / Maria Paula Soares Aranha (Suplente) Marcus Moreira de Almeida (Efetivo) / Benilton Couto da Cunha (Suplente)

5. Nomination of all the names that compose the slate. - Chapa apresentada pela Administração

[ ] Approve [ ] Reject [ ] Abstain

6. If one of the candidates of the slate leaves it, to accommodate the separate election referred to in articles 161, paragraph 4, and 240 of Law 6404, of 1976, can the votes corresponding to your shares continue to be conferred to the same slate? -

[ ] Yes [ ] No [ ] Abstain

[Eligible tickers in this resolution: B3SA3]

7. In the event of the installation of the Fiscal Council, to set its remuneration, in accordance with corporate law, at up to R$627,987.36.

[ ] Approve [ ] Reject [ ] Abstain

City :__________________________________________________________________________

Date :__________________________________________________________________________

Signature :_____________________________________________________________________

Shareholder's Name :____________________________________________________________

Phone Number :__________________________________________________________________