ROAD TOWN, British Virgin Islands, Oct. 29, 2020 — Aura Minerals Inc. (TSX: ORA) (B3: AURA32) (the “Company” or “Aura”), further to the press releases dated August 26, 2020 and October 9, 2020, today announces that a notice to the market (comunicado ao mercado) has been released in connection with the secondary public offering of Brazilian depositary receipts (certificados de depósito de ações, or “BDRs”), issued by Itaú Unibanco S.A., as depositary, each BDR representing one share in the capital of the Company (each share of the Company, a “Share”), pursuant to Brazilian Law No. 6,385, dated December 7, 1976, as amended, Brazilian Securities Commission (Comissão de Valores Mobiliários, or the “CVM”) Instruction No. 332, dated April 4, 2000, as amended, CVM Instruction No. 400, dated December 29, 2003, as amended, the ANBIMA Code of Regulation and Best Practices for Structuring, Coordination and Distribution of Public Offers for Securities and Public Offers for the Acquisition of Securities (Código ANBIMA de Regulação e Melhores Práticas para Estruturação, Coordenação e Distribuição de Ofertas Públicas de Valores Mobiliários e Ofertas Públicas de Aquisição de Valores Mobiliários) and other applicable legal and regulatory provisions (the “Secondary Offering”), with XP Investimentos Corretora de Câmbio, Titulos e Valores Mobiliários S.A. as underwriter (the “Underwriter”), to the effect that Arias Resource Capital Fund L.P., Arias Resource Capital Fund II (Mexico) L.P. and Arias Resource Capital Fund II L.P. have decided to alter the amount of Shares offered in the Secondary Offering, therefore remaining as selling shareholders and offerors jointly with LF Ruffer Investment Funds – LF Ruffer Gold Fund (the “Selling Shareholders”).