ERO.TO · 2022-12-22 12:00:00

Ero Copper Files Technical Report for Caraíba Operations

Technical Reports (NI 43-101)

December 22, 2022

Vancouver, British Columbia – Ero Copper Corp. (TSX: ERO, NYSE: ERO) ("Ero" or the

“Company”) is pleased to announce the filing of its 2022 Technical Report for the Caraíba

Operations, which includes information related to the increase in mineral reserves and

mineral resources as previously announced on November 7, 2022.

The Technical Report was prepared in accordance with the Canadian Securities

Administrator's National Instrument 43-101 – Standards of Disclosure for Mineral Projects,

and can be found on the Company's website (www.erocopper.com) and on SEDAR

(www.sedar.com). A copy of the Technical Report will also be filed on EDGAR.

TSX: ERO

NYSE: ERO

1 Ero Copper Corp

ABOUT ERO COPPER CORP

Ero Copper Corp is a high-margin, high-growth, clean copper producer with operations in

Brazil and corporate headquarters in Vancouver, B.C. The Company's primary asset is a

99.6% interest in the Brazilian copper mining company, MCSA, 100% owner of the

Company's Caraíba Operations (formerly known as the MCSA Mining Complex), which are

located in the Curaçá Valley, Bahia State, Brazil and include the Pilar and Vermelhos

underground mines, the Surubim mine, and the Tucumã Project (formerly known as Boa

Esperança), an IOCG-type copper project located in Pará, Brazil. The Company also owns

97.6% of NX Gold S.A. which owns the Xavantina Operations (formerly known as the NX

Gold Mine), namely comprised of an operating gold and silver mine located in Mato Grosso,

Brazil. Additional information on the Company and its operations, including technical reports

on the Caraíba Operations, Xavantina Operations and Tucumã Project, can be found on the

Company's website (www.erocopper.com), on SEDAR (www.sedar.com), and on EDGAR

(www.sec.gov). The Company’s shares are publicly traded on the Toronto Stock Exchange

and the New York Stock Exchange under the symbol “ERO”.

FOR MORE INFORMATION, PLEASE CONTACT

Courtney Lynn, VP, Corporate Development & Investor Relations

(604) 335-7504

[email protected]

CAUTION REGARDING FORWARD LOOKING INFORMATION AND STATEMENTS

This press release contains “forward-looking statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and “forward-looking information” within the meaning of

applicable Canadian securities legislation (collectively, “forward-looking statements”). Forward-looking statements include statements that use forward-looking terminology such as “may”, “could”,

“would”, “will”, “should”, “intend”, “target”, “plan”, “expect”, “budget”, “estimate”, “forecast”, “schedule”, “anticipate”, “believe”, “continue”, “potential”, “view” or the negative or grammatical variation thereof

or other variations thereof or comparable terminology. Forward-looking statements may include, but are not limited to, statements with respect to the future filing of the Technical Report.

Forward-looking statements are subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual results, actions, events, conditions, performance or achievements to

materially differ from those expressed or implied by the forward-looking statements, including, without limitation, risks discussed in this press release and in the Company's Annual Information Form for the

year ended December 31, 2021 and dated March 11, 2022 (the "AIF") under the heading “Risk Factors”.

Forward-looking statements are not a guarantee of future performance. There can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ

materially from those anticipated in such statements. Forward-looking statements involves statements about the future and are inherently uncertain, and the Company’s actual results, achievements or

other future events or conditions may differ materially from those reflected in the forward-looking statements due to a variety of risks, uncertainties and other factors, including, without limitation, those

referred to herein and in the AIF under the heading “Risk Factors”.

The Company’s forward-looking statements are based on the assumptions, beliefs, expectations and opinions of management on the date the statements are made, many of which may be difficult to

predict and beyond the Company’s control.

Forward-looking statements contained herein are made as of the date of this press release and the Company disclaims any obligation to update or revise any forward-looking statement, whether as a result

of new information, future events or results or otherwise, except as and to the extent required by applicable securities laws.

TSX: ERO

NYSE: ERO

2 Ero Copper Corp

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