B3 S A Brasil Bolsa Balcão : Minutes of the BM – 09/14/2023

B3 S.A. - BRASIL, BOLSA, BALCÃO

PUBLICLY-HELD COMPANY

CNPJ nº 09.346.601/0001-25

NIRE 35.300.351.452

MINUTES OF THE ORDINARY MEETING OF THE BOARD OF DIRECTORS

HELD ON SEPTEMBER 14, 2023

1. Date, Time and Place: On September 14, 2023, at 5 pm, at the branch of B3 S.A. -
   Brasil, Bolsa, Balcão ("B3" or "Company"), located in the city of São Paulo, State of São
   Paulo, at Avenida Brigadeiro Faria Lima, No. 1663, 2nd floor, simultaneously held via videoconference.
2. Attendance: Messr. Antonio Carlos Quintella - Chairman, Ana Dolores Moura Carneiro de Novaes, Caio Ibrahim David, Claudia de Souza Ferris, Claudia Farkouh Prado, Cristina Anne Betts, Florian Bartunek, Guilherme Affonso Ferreira and Mauricio Machado de Minas - Directors. Justified absence of Mr. Pedro Paulo Giubbina Lorenzini and Mr. Rodrigo Guedes Xavier.
3. Presiding Board: Mr. Antonio Carlos Quintella - Chairman; and Ms. Iael Lukower - Secretary.
4. Resolutions passed based on the supporting documents that are filed at the
   Company's headquarters, having authorized the drawing up of these minutes in summary form:

4.1. Based on article 57 of the Bylaws, to approve the payment, to the Company's shareholders, of (i) interest on equity, in the total amount of R$ 317,500,000.00, equivalent to the gross amount of R$ 0.05589849 per share, which will be paid at the net amount of R$ 0.04751372 per share, considering the number of shares in circulation on August 22, 2023, with due regard to item 4.1.2 below, already deducting Withholding Income Tax of 15% levied on such amount, except for shareholders who are subject to different taxation or who are exempt from said taxation, and (ii) dividends, referring to the calculation of the result for the 2nd quarter of fiscal year 2023, in the total amount of R$ 280,200,000.00, equivalent to the amount of R$ 0.04933152 per share, considering the number of shares in circulation on August 22, 2023, with due regard to item 4.1.2 below, as follows:

1. the amount now distributed as interest on equity, pursuant to article 9 of Law No. 9.249/95, will be attributed to the mandatory dividends for fiscal year 2023, pursuant to applicable law;
2. the amounts per share are estimated and may be modified due to the sale of treasury shares to meet the Company's Stock Grant Plan or other share-based plans, or due to the purchase of shares under the Buyback Program;

INFORMAÇÃO PÚBLICA - PUBLIC INFORMATION

(Continuance of the minutes of the Ordinary Meeting of the Board of Directors of B3 S.A. - Brasil, Bolsa, Balcão held on September

14, 2023)

1. the aforementioned payment will be made on October 06, 2023, and will be based on the shareholding position September 21, 2023; and
2. the Company's shares will be traded on the "with" condition until September 21, 2023, inclusive, and on the "ex" condition of interest on equity and dividend, as of September 22, 2023.

5. Closing: There being no further business to be resolved, these minutes were drawn up and then approved and signed by all attending Directors. São Paulo, September 14, 2023. Signatures. Antonio Carlos Quintella, Ana Dolores Moura Carneiro de Novaes, Caio Ibrahim David, Claudia de Souza Ferris, Claudia Farkouh Prado, Cristina Anne Betts, Florian Bartunek, Guilherme Affonso Ferreira and Mauricio Machado de Minas.

This is a true copy of the minutes recorded in the proper register.

Antonio Carlos Quintella

Chairman

INFORMAÇÃO PÚBLICA - PUBLIC INFORMATION