Ero Copper Corp.

CORPORATE STRUCTURE

Ero Copper was incorporated under the Business Corporations Act(British Columbia) (“BCABC”) on May 16, 2016. Ero Copper’s head office is located at Suite 1050, 625 Howe Street, Vancouver, British Columbia, Canada, V6C 2T6 and its registered office is located at Suite 3500, 1133 Melville Street, Vancouver, British Columbia, Canada, V6E 4E5.

The Company indirectly holds approximately 99.6% of the voting shares of Mineração Caraíba S.A. (“MCSA” or “Mineração Caraíba”) through its wholly-owned subsidiary, Ero Brasil Participações Ltda. (“EBP”), and indirectly holds approximately 97.6% of the voting shares of NX Gold S.A. (“NX” or “NX Gold”) through its wholly-owned subsidiary, Ero Gold Corp. (“Ero Gold”), incorporated under the BCABC. MCSA holds a 100% interest in each of the Caraíba Operations and the Tucumã Project. NX Gold holds a 100% interest in the Xavantina Operations. EBP, MCSA and NX Gold were formed under the laws of Brazil. The remaining voting shares of MCSA are held by a minority group of shareholders, including former employees of MCSA. The remaining voting shares of NX Gold are held by a minority group of shareholders, including former employees of NX Gold. The following chart illustrates the Company’s principal subsidiaries, together with the governing law of each subsidiary and the percentage of voting securities beneficially owned or controlled or directed, directly or indirectly, by the Company, as well as the Company’s operating mines and development projects.