<SEC-DOCUMENT>0000950142-21-002148.txt : 20210630
<SEC-HEADER>0000950142-21-002148.hdr.sgml : 20210630
<ACCEPTANCE-DATETIME>20210630130415
ACCESSION NUMBER:		0000950142-21-002148
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210630
FILED AS OF DATE:		20210630
DATE AS OF CHANGE:		20210630

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ero Copper Corp.
		CENTRAL INDEX KEY:			0001853860
		STANDARD INDUSTRIAL CLASSIFICATION:	METAL MINING [1000]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A1
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40459
		FILM NUMBER:		211061214

	BUSINESS ADDRESS:	
		STREET 1:		625 HOWE STREET, SUITE 1050
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6C 2T6
		BUSINESS PHONE:		604-449-9236

	MAIL ADDRESS:	
		STREET 1:		625 HOWE STREET, SUITE 1050
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6C 2T6
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>eh210165234_6k.htm
<DESCRIPTION>FORM 6-K
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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 10pt 0 0; text-align: center"></P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 10pt 0 0; text-align: center">UNITED STATES</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: center">SECURITIES AND EXCHANGE COMMISSION<BR>
WASHINGTON, D.C. 20549</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 10pt 0 6pt; text-align: center">FORM 6-K</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: center">Report of Foreign Private Issuer<BR>
Pursuant to Rule&nbsp;13a-16 or 15d-16<BR>
under the Securities Exchange Act of 1934</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 10pt 0; text-align: center"><B>For the month of June 2021<BR>
Commission File Number 001-40459</B></P>

<P STYLE="font: bold 12pt Times New Roman, Times, Serif; margin: 0; text-align: center">ERO COPPER CORP.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-weight: normal">(Translation of registrant's
name into English)</FONT></P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 10pt 0; text-align: center"><B>625 Howe Street, Suite&nbsp;1050&nbsp;<BR>
Vancouver, British Columbia V6C 2T6&nbsp;<BR>
Canada</B><BR>
(Address of principal executive office)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: justify">Indicate by check mark whether the registrant
files or will file annual reports under cover of Form 20-F or Form 40-F:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: center"><FONT STYLE="font-weight: normal">Form&nbsp;20-F&nbsp;<FONT STYLE="font-family: Wingdings">&#168;</FONT>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Form&nbsp;40-F&nbsp;<FONT STYLE="font-family: Wingdings">&#254;</FONT></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: justify">Indicate by check mark if the registrant is
submitting the Form 6-K in paper as permitted by Regulation&nbsp;S-T Rule&nbsp;101(b)(1). _____</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: justify">Indicate by check mark if the registrant is
submitting the Form 6-K in paper as permitted by Regulation&nbsp;S-T Rule&nbsp;101(b)(7). _____</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 6pt 0 0; text-align: justify">&nbsp;</P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 12pt 0; text-align: left">Signatures</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 12pt 0 0; text-indent: 0.5in">Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="3"><B>ERO COPPER CORP.</B></TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">By:&nbsp;&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-bottom: Black 1pt solid; vertical-align: bottom">/s/ Deepk Hundal</TD>
    <TD STYLE="vertical-align: top">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 5%">&nbsp;</TD>
    <TD STYLE="width: 5%">Name:&nbsp;&nbsp;</TD>
    <TD STYLE="width: 30%">Deepk Hundal</TD>
    <TD STYLE="width: 10%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Title:&nbsp;&nbsp;</TD>
    <TD>VP, General Counsel and Corporate Secretary</TD>
    <TD>&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>Date: June 30, 2021</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 24pt 0 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 12pt 0; text-align: center">Exhibit&nbsp;Index</P>

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    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 81%">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; border-bottom: Black 1pt solid"><B>Description of Document</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD>99.1</TD>
    <TD>&nbsp;</TD>
    <TD><P STYLE="margin: 0; font: 10pt Times New Roman, Times, Serif"><A HREF="eh210165234_ex9901.htm">Material Change Report dated June 30, 2021</A></p></TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>eh210165234_ex9901.htm
<DESCRIPTION>EXHIBIT 99.1
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right"><B>EXHIBIT 99.1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>FORM 51-102F3</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Material Change Report</B></P>

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<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 1.</B></TD><TD STYLE="text-align: justify"><B>Name and Address of Issuer</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt">Ero Copper Corp. (&ldquo;Ero&rdquo; or the &ldquo;Company&rdquo;)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt">1050 &ndash; 625 Howe Street<BR>
Vancouver, BC V6C 2T6</P>

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<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 2.</B></TD><TD STYLE="text-align: justify"><B>Date of Material Change</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt">June 30, 2021.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 3.</B></TD><TD STYLE="text-align: justify"><B>News Release</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt 0.5in; text-align: justify">A news release dated June 30, 2021,
announcing the material change referred to in this report, was disseminated through GlobeNewswire and filed on SEDAR (<FONT STYLE="color: Blue"><U>www.sedar.com</U></FONT>)
on June 30, 2021.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 4.</B></TD><TD STYLE="text-align: justify"><B>Summary of Material Change</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">Ero announces that it has entered into a definitive
Precious Metals Purchase Agreement (the &ldquo;NX Gold Stream&rdquo;) with RGLD Gold AG, a wholly owned subsidiary of Royal Gold Inc.
(collectively, &ldquo;Royal Gold&rdquo;), in relation to gold production from the NX Gold Mine, located in Mato Grosso, Brazil.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 5.</B></TD><TD STYLE="text-align: justify"><B>Full Description of Material Change</B></TD></TR></TABLE>

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<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>5.1</B></TD><TD STYLE="text-align: justify"><B>Full Description of Material Change</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify"><FONT STYLE="font-size: 10pt">The Company</FONT>
is pleased to announce that it has entered into the NX Gold Stream with Royal Gold, in relation to gold production from the NX Gold Mine,
located in Mato Grosso, Brazil.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: justify">TRANSACTION DETAILS</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 12pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify">Upfront cash consideration of US$100 million for the purchase of 25% of gold produced until 93,000 ounces
of gold have been delivered, decreasing to 10% of gold produced over the remaining life of mine;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 12pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify">Royal Gold will make ongoing payments equal to 20% of the prevailing spot gold price for each ounce
                                                                                                             of gold delivered until 49,000 ounces of gold have been received, after which it will pay 40% of the prevailing spot gold price for
                                                                                                             each ounce of gold delivered;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 12pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify">An additional amount of up to US$10 million will be payable to the Company subject to certain performance
conditions related to planned exploration drilling and increases to the NI 43-101 (as defined below) compliant Measured and Indicated
mineral resources of the NX Gold Mine.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: justify">TRANSACTION HIGHLIGHTS</P>

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify">Unlocks considerable value from the NX Gold Mine by validating the exploration potential of the broader
NX Gold land package;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 9pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify">Forms strategic partnership with Royal Gold that is highly aligned with management&rsquo;s vision to further
develop and grow production from the NX Gold Mine through continued exploration and utilization of excess mill capacity;</TD></TR></TABLE>

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify">Proceeds from the transaction will significantly enhance Ero&rsquo;s balance sheet strength and flexibility,
offering further support to execute upon the Company&rsquo;s growth strategy including advancing the Boa Esperan&ccedil;a Project;</TD></TR></TABLE>

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify">Post-transaction, the NX Gold Mine will continue to be a high-margin gold producer, highlighted by Q1
2021 All-in-Sustaining Costs<SUP>(*)</SUP> of US$643 per ounce of gold produced; and,</TD></TR></TABLE>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify">Royal Gold to commit US$5 per ounce of gold delivered under the NX Gold Stream to support the Company&rsquo;s
environmental, social and governance (&ldquo;ESG&rdquo;) commitments for the NX Gold Mine and surrounding communities.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">Commenting on the NX Gold Stream, David Strang,
CEO, stated, <I>&ldquo;In just over three years, the NX Gold Mine has developed within our organization from an asset held for sale with
no mineral reserves or resources to a low-cost producer with a long-term mine life, featuring significant exploration potential and excess
mill capacity to be utilized with continued exploration success. Our partnership with Royal Gold on the NX Gold Mine is an important vote
of confidence on the quality of the asset and its exploration potential. This transaction unlocks considerable upfront value for Ero&rsquo;s
shareholders while retaining upside as we continue to grow and develop the mine. </I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify"><I>&ldquo;The proceeds from this transaction,
paired with our US$84 million cash position at the end of the first quarter, leave us extremely well-positioned to deliver on all of our
core growth objectives, including: (i) increasing high-margin copper production at the MCSA Mining Complex, (ii) increasing gold production
and extending mine life at the NX Gold Mine and (iii) advancing the Boa Esperan&ccedil;a Project.&rdquo; </I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">*All-in Sustaining Costs (&ldquo;AISC&rdquo;)
per ounce of gold produced is a non-IFRS measure &ndash; please refer to the Non-IFRS Measures section of this press release and the Company&rsquo;s
press release dated May 4, 2021 for additional information. Post-closing, the Company intends to reflect the stream as an adjustment to
NX Gold segment revenue.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">TRANSACTION TERMS</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">Upfront cash consideration of US$100 million
to the Company will be paid upon closing of the NX Gold Stream, which is expected in Q3 2021. The economic effective date of the transaction
is May 1, 2021. Royal Gold will receive 25% of gold produced from the mine from the effective date until 93,000 ounces of gold have been
delivered, after which Royal Gold will receive 10% of gold production for the remaining life of mine. Royal Gold will make ongoing payments
equal to 20% of the spot gold price at the time of delivery until 49,000 ounces have been delivered, after which Royal Gold will make
ongoing payments equal to 40% of the spot gold price at the time of delivery for the remaining life of mine.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">Additional payment obligations of Royal Gold
include:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 12pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 9pt"></TD><TD STYLE="width: 27pt">(i)</TD><TD STYLE="text-align: justify">Up to US$5 million payable, available through the end of 2024, based upon the number of ounces of gold
added to the Measured and Indicated mineral resource categories as compared to the mineral resources as of the effective date of the NX
Gold Stream at a rate of US$20 per ounce;</TD></TR></TABLE>

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<TD STYLE="width: 9pt"></TD><TD STYLE="width: 27pt">(ii)</TD><TD STYLE="text-align: justify">Up to US$5 million payable, available from 2022 through the end of 2024, based upon completion of planned
meters of drilling within the exploration concessions of the NX Gold Mine at a rate of US$100 per meter; and,</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 12pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 9pt"></TD><TD STYLE="width: 27pt">(iii)</TD><TD STYLE="text-align: justify">US$5 per ounce of gold delivered under the NX Gold Stream payable to the Company as contribution towards
ongoing ESG initiatives within the area of influence of the mine.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">Closing of the transaction is subject to the
completion of certain corporate matters and customary conditions.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">ADVISORS AND COUNSEL</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">GenCap Mining Advisory Ltd. is acting as financial
advisor and Blake, Cassels &amp; Graydon LLP is acting as legal advisor to the Company.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">NON-IFRS MEASURES</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">All-in sustaining cost of gold produced (per
ounce) is the sum of production costs, site general and administrative costs, accretion of mine closure and rehabilitation provision,
sustaining capital expenditures, sustaining leases, and royalties and production taxes, net of silver by-product credits, divided by the
gold ounces produced at the NX Gold Mine. By-product credits are calculated based on actual precious metal sales during the period divided
by the total ounces of gold produced during the period. All-in sustaining cost of gold produced per ounce is a non-IFRS measure used by
the Company to manage and evaluate operating performance of the Company&rsquo;s operating mining unit and is widely reported in the mining
industry as benchmarks for performance but does not have a standardized meaning and is disclosed in addition to IFRS measures.</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">ABOUT ERO COPPER CORP</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">Ero Copper Corp, headquartered in Vancouver,
B.C., is focused on copper production growth from the MCSA Mining Complex located in Bahia State, Brazil, with over 40 years of operating
history in the region. The Company's primary asset is a 99.6% interest in the Brazilian copper mining company, MCSA, 100% owner of the
MCSA Mining Complex, which is comprised of operations located in the Cura&ccedil;&aacute; Valley, Bahia State, Brazil, wherein the Company
currently mines copper ore from the Pilar and Vermelhos underground mines, and the Boa Esperan&ccedil;a development project, an IOCG-type
copper project located in Par&aacute;, Brazil. The Company also owns 97.6% of the NX Gold Mine, an operating gold and silver mine located
in Mato Grosso, Brazil. Additional information on the Company and its operations, including technical reports on the MCSA Mining Complex,
Boa Esperan&ccedil;a and NX Gold properties, can be found on the Company's website (www.erocopper.com), on SEDAR (www.sedar.com) and EDGAR
(www.sec.gov).</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in; text-align: left"><B>5.2</B></TD><TD STYLE="text-align: justify"><B>Disclosure for Restructuring Transactions</B></TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">Not applicable.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 6.</B></TD><TD><B>Reliance On subsection 7.1(2) of National Instrument 51-102</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt">Not applicable.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 7.</B></TD><TD STYLE="text-align: justify"><B>Omitted Information</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt; text-align: justify">Not applicable.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 8.</B></TD><TD STYLE="text-align: justify"><B>Executive Officer</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt">Courtney Lynn, Vice President, Corporate Development and Investor
Relations<BR>
Tel:&#9;(604) 335 - 7504 Email: info@erocopper.com</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>Item 9.</B></TD><TD><B>Date of Report</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 10pt">June 30, 2021.</P>


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<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 3pt; text-align: justify; color: #7F7F7F"><FONT STYLE="font-size: 8pt">CAUTION
REGARDING FORWARD LOOKING INFORMATION AND STATEMENTS This material change report contains &ldquo;forward-looking statements&rdquo; within
the meaning of the United States Private Securities Litigation Reform Act of 1995 and &ldquo;forward-looking information&rdquo; within
the meaning of applicable Canadian securities legislation (collectively, &ldquo;forward-looking statements&rdquo;). Forward-looking statements
include statements that use forward-looking terminology such as &ldquo;may&rdquo;, &ldquo;could&rdquo;, &ldquo;would&rdquo;, &ldquo;will&rdquo;,
&ldquo;should&rdquo;, &ldquo;intend&rdquo;, &ldquo;target&rdquo;, &ldquo;plan&rdquo;, &ldquo;expect&rdquo;, &ldquo;budget&rdquo;, &ldquo;estimate&rdquo;,
&ldquo;forecast&rdquo;, &ldquo;schedule&rdquo;, &ldquo;anticipate&rdquo;, &ldquo;believe&rdquo;, &ldquo;continue&rdquo;, &ldquo;potential&rdquo;,
&ldquo;view&rdquo; or the negative or grammatical variation thereof or other variations thereof or comparable terminology. Such forward-looking
statements include, without limitation, statements with respect to the successful closing of the proposed NX Gold Stream with Royal Gold,
future amounts payable under the NX Gold Stream pursuant to performance conditions, the Company&rsquo;s expectations, strategies and
plans for the MCSA Mining Complex, the NX Gold Mine and the Boa Esperan&ccedil;a Project, including post-transaction production margins,
the Company&rsquo;s intention to reflect the stream as an adjustment to NX Gold segment revenue, planned exploration, development, construction
and production activities as well as the Company&rsquo;s balance sheet strength and flexibility, overall financial condition, results
of operations, cash flows and prospects.</FONT></P>

<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 4.8pt; text-align: justify; color: #7F7F7F"><FONT STYLE="font-size: 8pt">Forward-looking
statements are not a guarantee of future performance and are based upon a number of estimates and assumptions of management in light
of management&rsquo;s experience and perception of trends, current conditions and expected developments, as well as other factors that
management believes to be relevant and reasonable in the circumstances, as of the date of the press release including, without limitation,
assumptions about: favourable equity and debt capital markets; the ability to raise any necessary additional capital on reasonable terms
to advance the production, development and exploration of the Company&rsquo;s properties and assets; future prices of copper, gold and
other metal prices; the timing and results of exploration and drilling programs; the accuracy of any mineral reserve and mineral resource
estimates; the geology of the MCSA Mining Complex, NX Gold Mine and the Boa Esperan&ccedil;a Property being as described in the technical
reports for these properties; production costs; the accuracy of budgeted exploration and development costs and expenditures; the price
of other commodities such as fuel; future currency exchange rates and interest rates; operating conditions being favourable such that
the Company is able to operate in a safe, efficient and effective manner; work force continues to remain healthy in the face of prevailing
epidemics, pandemics or other health risks, political and regulatory stability; the receipt of governmental, regulatory and third party
approvals, licenses and permits on favourable terms; obtaining required renewals for existing approvals, licenses and permits on favourable
terms; requirements under applicable laws; sustained labour stability; stability in financial and capital goods markets; availability
of equipment and critical supplies, spare parts and consumables; positive relations with local groups and the Company&rsquo;s ability
to meet its obligations under its agreements with such groups; and satisfying the terms and conditions of the Company&rsquo;s current
loan arrangements. While the Company considers these assumptions to be reasonable, the assumptions are inherently subject to significant
business, social, economic, political, regulatory, competitive and other risks and uncertainties, contingencies and other factors that
could cause actual actions, events, conditions, results, performance or achievements to be materially different from those projected
in the forward-looking statements. Many assumptions are based on factors and events that are not within the control of the Company and
there is no assurance they will prove to be correct.</FONT></P>

<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 4.8pt; text-align: justify; color: #7F7F7F"><FONT STYLE="font-size: 8pt">Furthermore,
such forward-looking statements involve a variety of known and unknown risks, uncertainties and other factors which may cause the actual
plans, intentions, activities, results, performance or achievements of the Company to be materially different from any future plans,
intentions, activities, results, performance or achievements expressed or implied by such forward-looking statements. Such risks include,
without limitation the risk factors listed under the heading &ldquo;Risk Factors&rdquo; in the Annual Information Form of the Company
for the year ended December 31, 2020, dated March 16, 2021 (the &ldquo;AIF&rdquo;).</FONT></P>

<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 4.8pt; text-align: justify; color: #7F7F7F"><FONT STYLE="font-size: 8pt">Although
the Company has attempted to identify important factors that could cause actual actions, events, conditions, results, performance or
achievements to differ materially from those described in forward-looking statements, there may be other factors that cause actions,
events, conditions, results, performance or achievements to differ from those anticipated, estimated or intended.</FONT></P>

<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 4.8pt; text-align: justify; color: #7F7F7F"><FONT STYLE="font-size: 8pt">The
Company cautions that the foregoing lists of important assumptions and factors are not exhaustive. Other events or circumstances could
cause actual results to differ materially from those estimated or projected and expressed in, or implied by, the forward-looking statements
contained herein. 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. Accordingly, readers should not place undue reliance on forward-looking
statements.</FONT></P>

<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 4.8pt; text-align: justify; color: #7F7F7F"><FONT STYLE="font-size: 8pt">Forward-looking
statements contained herein are made as of the date of the press release and the Company disclaims any obligation to update or revise
any forward-looking statements, whether as a result of new information, future events or results or otherwise, except as and to the extent
required by applicable securities laws.</FONT></P>

<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 3pt; text-align: justify; color: #7F7F7F"><FONT STYLE="font-size: 8pt">Cautionary
Notes Regarding Mineral Resource and Mineral Reserve Estimates. In accordance with applicable Canadian securities regulatory requirements,
all mineral reserve and mineral resource estimates of the Company disclosed in the press release have been prepared in accordance with
Canadian National Instrument 43-101 &ndash; Standards of Disclosure for Mineral Projects (&ldquo;NI 43-101&rdquo;) and are classified
in accordance with the CIM Standards. NI 43-101 is a rule developed by the Canadian Securities Administrators that establishes standards
for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. NI 43-101 differs significantly
from the disclosure requirements of the Securities and Exchange Commission (the &ldquo;SEC&rdquo;) generally applicable to U.S. companies.
For example, the terms &ldquo;mineral reserve&rdquo;, &ldquo;proven mineral reserve&rdquo;, &ldquo;probable mineral reserve&rdquo;, &ldquo;mineral
resource&rdquo;, &ldquo;measured mineral resource&rdquo;, &ldquo;indicated mineral resource&rdquo; and &ldquo;inferred mineral resource&rdquo;
are defined in NI 43-101. These definitions differ from the definitions in the disclosure requirements promulgated by the SEC. Accordingly,
information contained in the press release may not be comparable to similar information made public by U.S. companies reporting pursuant
to SEC disclosure requirements.</FONT></P>

<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 3pt; text-align: justify; color: #7F7F7F"><FONT STYLE="font-size: 8pt">Mineral
resources which are not mineral reserves do not have demonstrated economic viability. Pursuant to the CIM Standards, mineral resources
have a higher degree of uncertainty than mineral reserves as to their existence as well as their economic and legal feasibility. Inferred
mineral resources, when compared with measured or indicated mineral resources, have the least certainty as to their existence, and it
cannot be assumed that all or any part of an inferred mineral resource will be upgraded to an indicated or measured mineral resource
as a result of continued exploration. Pursuant to NI 43-101, inferred mineral resources may not form the basis of any economic analysis.
Accordingly, readers are cautioned not to assume that all or any part of a mineral resource exists, will ever be converted into a mineral
reserve, or is or will ever be economically or legally mineable or recovered.</FONT></P>

<P STYLE="font: 10pt Calibri, Helvetica, Sans-Serif; margin: 0 0 3pt; text-align: justify"><FONT STYLE="font-size: 8pt">&nbsp;</FONT></P>


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