B3 Brasil Bolsa Balcão  : Comunicado ao Mercado - Aquisição de Participação Acionária - GIC

B3 S.A. - Brasil, Bolsa, Balcão

CNPJ nº 09.346.601/0001-25

NIRE 35.300.351.452

COMUNICADO AO MERCADO

AQUISIÇÃO DE PARTICIPAÇÃO ACIONÁRIA

A B3 S.A. - Brasil, Bolsa, Balcão ("Companhia") comunica que, nos termos do Artigo 12 da Instrução CVM nº 358/02, conforme alterada, e do Estatuto Social da Companhia, recebeu correspondência de seu acionista GIC Private Limited ("GIC"), na qual informa que adquiriu ações de emissão da Companhia, passando a deter, de forma agregada, 104.367.087 ações ordinárias, o que representa 5,07% das ações emitidas pela Companhia. A íntegra da correspondência encontra-se anexa a este comunicado.

São Paulo, 23 de janeiro de 2018.

Daniel Sonder

Vice-Presidente Financeiro, Corporativo e de Relações com Investidores

Relações com Investidores: +55 11 2565-4729/4418/4207/7451 |RI@B3.COM.BR

23 January 2018

Attn:

Daniel Sander

Investor Relations Director

B3 S.A. - BRASIL, BOLSA, BALCAO P<; Antonio Prado. 48 - 7° Floor 1010901

City: Sao Paulo State: SP

Brazil

Dear Sir,

OFFICIAL DECLARATION-POSITION IN B3 S.A. -BRASIL, BOLSA, BALCAO

SHARES

Pursuant to Article 12 of CVM Instruction no. 358, we, GIC Private Limited ("GIC'') are required to notify B3 S.A. - Brasil, Bolsa, Balcao that our aggregate holdings in B3 S.A. - Brasil, Bolsa, Balcao Shares (ISIN: BRBVMFACNOR3) have reached the 5% disclosure limit as of 19 January 2018. The table below indicates the details of our holdings:

Passenger

Qualification

Tax ID

Holdings

Ace Name

% Holdings*

Government of SingaporeLegal entity 08.765.815/0001-73 78,511,237 3.813% constituted outside Brazil

Monetary Authority Singapore

of

Legal entity 05.840.118/0001-41 constituted outside Brazil

25,855,850 1.256%

Total Holdings 104,367,087 5.068%

Legal Representative

Full name: Citibank Distribuidora De Titulos E Valores Mobiliarios S.A. Tax ID: 33.868.597/0001-40

* Based on number of Common shares of 2,059,138,490

Other than the shareholding detailed above, we do not hold, directly or indirectly, any other shares, rights over shares, other securities, and financial derivative instruments referenced to shares on B3 S.A. - Brasil, Bolsa, Balcao at the time of writing.

CIC Private Limited

168 Robinson Road #37-01 Capital Tower Singapore 068912 Tel: (65) 6889 8888

Company Registration No., 198102265N

Please be informed that our interest in 83 S.A. - Brasil, Bolsa, Balcao extends only as far as maintaining a diversified trading portfolio. As such, we have no interest in altering the composition of the control or administrative structures of 83 S.A. - Brasil, Bolsa, Balcao

Furthermore, at the time of writing, we are not a party to any agreement or contract regulating the right to vote or purchase and sell securities issued by 83 S.A. - Brasil, Bolsa, Balcao

Finally, we would be grateful if you would forward this declaration to the Comissiio de Va/ores Mobiliarios, Bovespa.

Please do not hesitate to contact Mr Jimmy Teo at 65-68898787 orGrplODSubshare@gic.com.sg should you require any further information or clarification.

Thank you for your kind attention.

Yours faithfully,