On November 14, 2023, Ero Copper Corp., also known as "Ero" or the "Company," completed a bought deal offering of 9,010,000 common shares. This included 500,000 shares issued under an over-allotment option, with each share priced at US$12.35, accumulating gross proceeds of approximately US$111 million (C$149 million). The offering was led by BMO Capital Markets as the sole bookrunner and lead underwriter, alongside a syndicate including Canaccord Genuity Corp., CIBC World Markets Inc., Scotia Capital Inc., TD Securities Inc., Cormark Securities Inc., National Bank Financial Inc., Paradigm Capital Inc., PI Financial Corp., Raymond James Ltd., and Stifel Canada.

The net proceeds are designated for growth projects at the Company’s Tucumã Project and Caraiba Operations, regional exploration in Brazil, and for working capital and other corporate purposes. The offering was conducted under the Canadian and U.S. prospectus supplements, part of the Company’s registration statement filed under the Canada/U.S. multi-jurisdictional disclosure system. The shares were offered in all Canadian provinces and territories except Quebec, and in the United States, consolidating Ero's financial base for its upcoming projects and operational needs.