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Ero Copper

ero · TSX Basic Materials
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Industry Copper
Employees 11-50
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FY2024 Annual Report · Ero Copper
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2024
Annual Report

In This Report
Our 
Portfolio
04
2024 
Highlights
06
Letter from the  
Executive Chairman
10
Consolidated  
Financial Statements
54
Management’s 
Discussion & Analysis
14
12
Letter from  
the CEO

Vermelhos Mine Aerial View, 
Caraíba Operations, Bahia, Brazil

1 For more information on the Company’s 
plans to earn a 60% interest in the 
Furnas Copper-Gold Project, please see 
its press releases dated October 30, 
2023 and July 22, 2024.
Our Portfolio 
Corporate Office
Vancouver
7
5
3
1
2
6
Corporate Office
São Paulo
Corporate Office
Belo Horizonte
New Production
Tucumã
Advanced Stage1
Furnas
4
Production
Caraíba
Production
Xavantina
Annual Report | 2024
4

Note: Copper C1 cash costs, gold C1 cash costs and gold all-in sustaining 
costs are non-IFRS measures and do not have a standardized meaning 
prescribed by IFRS and might not be comparable to similar financial measures 
disclosed by other issuers. Please refer to the Company’s discussion of 
Non-IFRS measures in its MD&A for the period ended December 31, 2024.
4. Furnas 
Copper-Gold Project1
Location: Pará, Brazil 
Stage: Advanced Stage
2. Xavantina 
Operations
Location: Mato Grosso, Brazil 
Stage: Operating
Ownership: 97.6%
US$1,006 
per oz
2024 All-in 
Sustaining Costs:
57,210 
ounces
2024 Gold 
Production: 
US$493 
per oz
2024 C1 Cash 
Costs:
35,444 
tonnes
2024 Copper 
Production: 
US$1.97 
per lb
2024 C1 
Cash Costs:
1. Caraíba 
Operations
Location: Bahia, Brazil
Stage: Operating 
Ownership: 99.6%
Annual Report | 2024
5,156 
tonnes
2024 Copper 
Production: 
3. Tucumã 
Operation
Location: Pará, Brazil 
Stage: Operating  
Ownership: 99.6%
Corporate Office
5. São Paulo
Corporate Office
6. Belo Horizonte
Corporate Office
7. Vancouver
5

* For more information on the Company’s plans to earn a 60% interest in the Furnas Copper-Gold Project, please see its press 
releases dated October 30, 2023 and July 22, 2024.
•	
We successfully delivered the Tucumã 
Project safely and on schedule, 
achieving first saleable copper 
concentrate production in July 2024.
•	
At the Xavantina Operations, we 
increased proven and probable 
mineral reserves by 19% and 
measured and indicated mineral 
resources, inclusive of mineral 
reserves, by 26% compared to the 
prior year’s estimates.
•	
In July 2024, we signed a definitive 
earn-in agreement with Vale Base 
Metals to earn a 60% interest in the 
Furnas Copper-Gold Project*. 
Execution of Growth Strategy
•	
During the fourth quarter, we 
published an initial resource 
estimate for the Furnas Project, 
confirming its potential for a large-
scale, high-grade underground mine, 
and commenced the 28,000-meter 
Phase 1 drill program.
•	
At the Caraíba Operations, we 
advanced construction of the Pilar 
Mine’s new external shaft, which 
is expected to offer meaningful 
production and cost benefits 
starting in 2027.
2024  
Highlights 
•	
The new Tucumã Operation contributed to a record fourth quarter copper 
production of 12,883 tonnes in concentrate, bringing full-year copper production 
to 40,600 tonnes.
•	
The Caraíba Operations produced 35,444 tonnes of copper for the year at C1 
cash costs of $1.97 per pound produced.
•	
The Tucumã Operation delivered 5,156 tonnes of copper, with 
metallurgical recoveries and concentrate grades meeting design targets, 
and throughput volumes increasing steadily each month.
•	
The Xavantina Operations produced 57,210 ounces of gold at C1 cash costs and all-in 
sustaining costs (AISC) of $493 and $1,006, per ounce produced, respectively.
Operating Highlights
6
Annual Report | 2024

•	
Cash flow from operations for the 
year was $145.4 million, with $113.5 
million generated in the second half.
•	
Total capital expenditures were 
$324.9 million million, a decrease 
of nearly $165 million compared to 
2023, following the completion of 
the Tucumã Operation.
•	
Adjusted EBITDA increased by 
approximately $33 million compared 
to 2023, reaching $216.2 million.
•	
Year-end liquidity remained strong 
at $90.4 million, comprising $50.4 
million in cash and cash equivalents, 
$15.0 million of undrawn availability 
under our senior secured revolving 
credit facility (Credit Facility), 
and $25.0 million of undrawn 
availability under our copper 
prepayment facility.
•	
Subsequent to year-end 2024, 
we amended our Credit Facility  
to enhance financial flexibility  
and support our expanded 
operational footprint.
•	
We successfully completed 
construction of the Tucumã Project 
with over seven million hours 
worked without a lost-time incident, 
demonstrating our commitment to 
health and safety.
•	
At our Caraíba Operations, we 
reinforced the stability of our tailings 
de-watering paddocks through 
targeted upgrades, ensuring 
continued operational integrity and 
environmental stewardship.
•	
We invested over $1 million in 
community programs across our 
operations, including expanding the 
Project Hope childhood education 
program near our Xavantina 
Operations in collaboration with our 
partner, Royal Gold.
•	
We trained over 98% of our 
managers in Brazil on identifying 
and mitigating human rights and 
modern slavery risks within our 
operations and supply chain, 
strengthening our responsible 
business practices.
Note: Copper C1 cash costs, gold C1 cash costs, gold AISC, adjusted EBITDA and available liquidity are non-IFRS measures and do 
not have a standardized meaning prescribed by IFRS and might not be comparable to similar financial measures disclosed by other 
issuers. Please refer to the Company’s discussion of Non-IFRS measures in its MD&A for the period ended December 31, 2024.
Financial  
Highlights
Environmental, 
Social and 
Governance
ESG
7

Financial 
Highlights 
Cash Flow  
from Opeations:  
$145.4 million
$145.4
1 Available Liquidity is a non-IFRS measures. Please see 
the Company’s MD&A for the period ended December 31, 
2024 for a reconciliation of non-IFRS measures.
2 The amendment to the Company’s senior secured 
revolving credit facility, which became effective in 
January 2025, included an increase in aggregate 
commitments from $150 million to $200 million.
Adjusted  
EBITDA:  
$216.2  
million 
Available Liquidity¹ 
at Dec. 31, 2024
Additional liquidity from 
increase to Credit Facility²
Copper Prepayment Facility
Cash
Credit Facility
$140.4 M
$50 M
$25 M
$25 M
$50 M
$15 M
$65 M
$90.4 M
8
Annual Report | 2024

9
Annual Report | 2024

Letter from the  
Executive 
Chairman
2024 was a transformative year for Ero 
Copper and a personally significant one 
for me. After eight years as Chief Executive 
Officer, I transitioned to the role of Executive 
Chairman on January 1, 2025—an opportunity 
to reflect on our journey and the remarkable 
achievements of our team.
When we acquired Mineração Caraíba in 
2016, our Caraíba Operations produced 
approximately 20,000 tonnes of copper 
annually, with an estimated mine life of eight 
years. The Tucumã Project was still conceptual, 
and our Xavantina Operations had no defined 
mine life, producing roughly 25,000 ounces of 
gold per year.
Since then, we have built Ero into a company 
defined by ambition, resilience, and continuous 
growth. Key milestones along the way included 
our TSX listing in 2017, the commencement 
of mining operations at Caraíba’s Vermelhos 
Mine in 2018, the more than doubling of 
production at both our Caraíba and Xavantina 
Operations, the addition of our NYSE listing 
in 2021, an inaugural bond offering in early 
2022, and the successful execution of major 
growth initiatives, including the safe and on-
time construction of the Tucumã Project as 
well as the plant cooling and mill expansion 
projects at Caraíba.
As exciting as these achievements have been,  
I believe our best years are still ahead of us.  
With Tucumã ramping up to commercial 
production, we are poised to produce between 
75,000 and 85,000 tonnes of copper in 2025. 
We are also investing in the future of the 
Caraíba Operations with the Pilar Mine’s new 
external shaft project. And most recently, we 
laid the foundation for our longer-term growth 
strategy through our partnership with Vale Base 
Metals on the Furnas Copper-Gold Project, in 
which we intend to earn a 60% interest.
“Reflecting on all that we have accomplished in 2024 
and since Ero’s founding, I am immensely proud of our 
team in Brazil and Canada. Together, we have built a 
company with a strong foundation for the future, and 
I look forward to the next chapter of our journey.”
10
Annual Report | 2024

With these advancements and a strong 
foundation in place, Ero’s future is exceptionally 
bright under Makko DeFilippo’s leadership. As 
I transition into the role of Executive Chairman, 
my commitment to Ero’s long-term success remains 
unwavering, and I have every confidence in Makko’s ability 
to lead the company forward. I would also like to express 
my deepest gratitude to Noel Dunn, who retired at the end of 
2024. As a co-founder and Ero’s Chairman since its inception, 
Noel played a pivotal role in shaping our company. His contributions 
have been instrumental to our success, and his legacy will continue to 
inspire us.
To our shareholders, thank you for your continued trust and 
support. Reflecting on all that we have accomplished in 
2024 and since Ero’s founding, I am immensely proud of 
our team in Brazil and Canada. Together, we have built 
a company with a strong foundation for the future, 
and I look forward to the next chapter of  
our journey.
David Strang
Executive Chairman
March 06, 2025
11
Annual Report | 2024

Letter from  
the CEO
Dear Fellow Shareholders,
A
s we reflect on 2024 and look ahead 
to 2025, I want to thank you for your 
continued support and confidence in Ero 
Copper. This past year was marked by significant 
achievements, including the successful on-time 
completion of the Tucumã Project. Transitioning 
from construction to ramp-up brought new 
challenges as we worked towards commercial 
production. Our ability to navigate operational 
headwinds is a testament to the dedication, 
resilience, and expertise of our project and 
operating teams across the group. As we 
address these challenges to deliver on Tucumã, 
we entered 2025 with confidence and a clear 
vision: establish Ero Copper as the leading 
mining Company operating in Brazil, as defined 
by safety, innovation and operational excellence 
to create lasting value for our shareholders, 
people and communities.
Executing on Our Growth Strategy
In July 2024, we achieved first copper concentrate 
production at Tucumã, an extraordinary 
accomplishment delivered on schedule—less than 
three years after the publication of the project’s 
Optimized Feasibility Study in September 2021. 
Despite encountering challenges that extended 
Tucumã’s ramp-up timeline, the processing plant 
reached design recovery rates and concentrate 
grades during the fourth quarter, contributing 
to record consolidated copper production for 
the quarter. With a focus on steadily increasing 
plant throughput and achieving commercial 
production during the first half of 2025, Tucumã 
is expected to contribute significantly to our full-
year consolidated copper production guidance of 
75,000 to 85,000 tonnes. 
At the Caraíba Operations, we made important 
progress on our growth strategy by advancing 
construction of the Pilar Mine’s new external 
shaft. This development, when complete in 
2027, will support the creation of a two-mine 
system at Pilar, resulting in what we expect to 
be a significant increase in mining rates—up to 
three million tonnes of ore per annum. In the near 
term, we are focused on improving operational 
flexibility in the mine through increased 
underground development. While progress in 
2024 was slower than expected on this front, we 
mobilized a second contractor in January 2025 
and anticipate restoring meaningful flexibility 
within the mine by mid-year.
“As we look ahead, we remain committed to delivering 
sustainable growth and long-term value creation. I 
am deeply proud of the Company we have built and 
excited about the opportunities that lie before us.”
12
Annual Report | 2024

Additionally, during the fourth quarter, we 
initiated an extensive drilling campaign at the 
Furnas Copper-Gold Project, following the 
execution of a definitive earn-in agreement 
with Vale Base Metals in July 2024. In 2025, 
we expect to complete approximately 40,000 
meters of exploration drilling at Furnas and look 
forward to sharing updates on the outstanding 
potential of this asset as our technical work 
program advances throughout the year.
Leadership Transition  
and a Vision for the Future
This past year also marked an important 
leadership transition at Ero Copper. On January 
1, 2025, I assumed the role of President and 
Chief Executive Officer. I am grateful that in 
this next chapter, David Strang, will serve as 
Executive Chairman, where he will continue 
to provide leadership and support to our 
organization. As part of this transition, Noel 
Dunn, who co-founded our Company and 
served as Ero’s Chairman since its inception, 
retired at the end of the year. I want to 
personally thank Noel for his years of leadership 
and invaluable contributions to the Company—
his vision, mentorship and dedication were 
instrumental in shaping Ero Copper into the 
thriving organization it is today. 
As I stated in our succession announcement 
in November 2024, I am honored by the trust 
that Noel, Dave and the Board of Directors 
have bestowed in selecting me as Ero’s next 
CEO. I am deeply committed to our values, 
and to serving our shareholders to ensure the 
responsible delivery of our growth objectives.
The Case for Copper:  
A Strong Outlook
The fundamentals for copper remain incredibly 
compelling. As the world transitions toward 
a decarbonized energy system, we expect 
demand for copper will continue to grow, 
Makko DeFilippo 
President & Chief Executive Officer
March 06, 2025
driven by renewable energy, the adoption of 
new energy-intensive technologies and global 
infrastructure development. While near-term 
market fluctuations will no doubt persist, the 
medium- and long-term outlook for copper 
is strong. Ero Copper is well-positioned to 
capitalize on this demand through a strategy 
centered on operational resilience, innovation 
and on advancing high-quality projects aligned 
with global decarbonization efforts.
As we look ahead, we remain committed 
to delivering sustainable growth and long-
term value creation. I am deeply proud of the 
Company we have built and excited about the 
opportunities that lie before us.
Thank you for your trust and support.
Vamos em Frente,
13
Annual Report | 2024

Management’s 
Discussion
and Analysis
For the Year Ended December 31, 2024

Table of 
Contents
Annual Report | 2024
15
BUSINESS OVERVIEW
16
HIGHLIGHTS
17
REVIEW OF OPERATIONS
The Caraíba Operations
21
The Tucumã Operation
22
The Xavantina Operations
23
2025 GUIDANCE
24
REVIEW OF FINANCIAL RESULTS
Review of quarterly results
26
Review of annual results
28
Summary of quarterly results for most recent eight quarters
30
OTHER DISCLOSURES
Liquidity, Capital Resources, and Contractual Obligations
31
Management of Risks and Uncertainties
33
Other Financial Information
36
Accounting Policies, Judgments and Estimates
36
Capital Expenditures
40
Alternative Performance (NON-IFRS) Measures
41
Disclosure Controls and Procedures 
and Internal Control over Financial Reporting
50
Notes and Cautionary Statements
50

MANAGEMENT’S DISCUSSION AND ANALYSIS 
This Management’s Discussion and Analysis (“MD&A”) has been prepared as at March 6, 2025 and 
should be read in conjunction with the audited consolidated financial statements of Ero Copper Corp. 
(“Ero”, the “Company”, or “we”) as at, and for the year ended December 31, 2024, and related notes 
thereto, which are prepared in accordance with International Financial Reporting Standards (“IFRS”) as 
issued by the International Accounting Standards Board (the “IASB”). All references in this MD&A to 
“Q4 2024” and “Q4 2023” are to the three months ended December 31, 2024 and December 31, 
2023, respectively, and all references to "Fiscal 2024" and "Fiscal 2023" are to the years ended 
December 31, 2024 and December 31, 2023, respectively. All dollar amounts are expressed in United 
States (“US”) dollars and tabular amounts are expressed in thousands of US dollars, unless otherwise 
indicated. References to “$”, “US$”, “dollars”, or “USD” are to US dollars, references to “C$” are to 
Canadian dollars, and references to “R$” or “BRL” are to Brazilian Reais. 
This MD&A refers to various alternative performance (Non-IFRS) measures, including copper C1 cash 
cost, copper C1 cash cost including foreign exchange hedges, realized copper price, gold C1 cash cost, 
gold all-in sustaining cost (“AISC”), realized gold price, EBITDA, adjusted EBITDA, adjusted net 
income attributable to owners of the Company, adjusted net income per share attributable to owners 
of the Company, net (cash) debt, working capital and available liquidity. Please refer to the section 
titled "Alternative Performance (Non-IFRS) Measures" for a discussion of non-IFRS measures.
This MD&A contains “forward‐looking statements” that are subject to risk factors set out in a 
cautionary note contained at the end of this MD&A. The Company cannot assure investors that such 
statements will prove to be accurate, and actual results and future, events may differ materially from 
those anticipated in such statements. The results for the periods presented are not necessarily 
indicative of the results that may be expected for any future period. Investors are cautioned not to 
place undue reliance on such forward-looking statements. All information contained in this MD&A is 
current and has been approved by the Board of Directors of the Company (the “Board”) as of March 6, 
2025, unless otherwise stated.
BUSINESS OVERVIEW
Ero Copper is a high-margin, high-growth 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, Mineração Caraíba S.A. ("MCSA"), which is the 100% owner of the 
Company's Caraíba Operations located in the Curaçá Valley, Bahia State, Brazil and the Tucumã 
Operation, an open pit copper mine located in Pará, Brazil. The Company also owns 97.6% of NX Gold 
S.A. ("NX Gold"), which owns the Xavantina Operations, 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 
Operation, 
can 
be 
found 
on 
SEDAR+ 
(www.sedarplus.ca/landingpage/) 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”.
16
Annual Report | 2024

HIGHLIGHTS
Operating Highlights 
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Copper (Caraíba Operations)
Ore Processed (tonnes)
 
719,942 
 
900,289 
 
812,202 
 
3,431,294 
 
3,231,667 
Grade (% Cu)
 1.30 
 1.20 
 1.59 
 1.14 
 1.49 
Cu Production (tonnes)
 
8,566 
 
9,920 
 
11,760 
 
35,444 
 
43,857 
Cu Production (lbs)
 18,883,286 
 21,870,631 
 25,926,281 
 78,139,888 
 96,687,638 
Cu Sold in Concentrate (tonnes)
 
8,420 
 
9,970 
 
11,429 
 
36,557 
 
42,595 
Cu Sold in Concentrate (lbs)
 18,562,541 
 21,980,217 
 25,196,731 
 80,593,665 
 93,905,643 
Cu C1 Cash Cost(1)(2)
$ 
1.85 
$ 
1.63 
$ 
1.75 
$ 
1.97 
$ 
1.80 
Copper (Tucumã Operation)
Ore Processed (tonnes)
 
223,013 
 
110,778 
 
— 
 
333,791 
 
— 
Grade (% Cu)
 2.17 
 1.00 
 — 
 1.78 
 — 
Cu Production (tonnes)
 
4,317 
 
839 
 
— 
 
5,156 
 
— 
Cu Production (lbs)
 
9,515,937 
 
1,850,043 
 
— 
 11,365,980 
 
— 
Cu Sold in Concentrate (tonnes)
 
3,750 
 
357 
 
— 
 
4,107 
 
— 
Cu Sold in Concentrate (lbs)
 
8,268,310 
 
787,042 
 
— 
 
9,055,352 
 
— 
Total Copper
Cu Production (tonnes)
 
12,883 
 
10,759 
 
11,760 
 
40,600 
 
43,857 
Cu Production (lbs)
 28,399,223 
 23,720,674 
 25,926,281 
 89,505,868 
 96,687,638 
Cu Sold in Concentrate (tonnes)
 
12,170 
 
10,327 
 
11,429 
 
40,664 
 
42,595 
Cu Sold in Concentrate (lbs)
 26,830,851 
 22,767,259 
 25,196,731 
 89,649,017 
 93,905,643 
Gold (Xavantina Operations)
Ore Processed (tonnes)
 
26,120 
 
41,761 
 
34,416 
 
146,161 
 
136,002 
Grade (g / tonne)
 
11.18 
 
11.41 
 
17.18 
 
13.37 
 
15.13 
Au Production (oz)
 
8,936 
 
13,485 
 
16,867 
 
57,210 
 
59,222 
Au Sold (oz)
 
11,106 
 
14,615 
 
18,479 
 
60,195 
 
57,949 
Au C1 Cash Cost(1)
$ 
744 
$ 
539 
$ 
413 
$ 
493 
$ 
422 
Au AISC(1)
$ 
1,691 
$ 
1,034 
$ 
991 
$ 
1,006 
$ 
957 
(1)   Please refer to the section titled "Alternative Performance (Non-IFRS) Measures" within this MD&A.
(2)  Copper C1 cash cost including foreign exchange hedges was $2.07 in Q4 2024 (Q4 2023 - $1.59) and $2.05 in Fiscal 
2024 (Fiscal 2023 - $1.68).
17
Annual Report | 2024

Financial Highlights
($ in millions, except per share amounts)
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Revenues
$ 
122.5 
$ 
124.8 
$ 
116.4 
$ 
470.3 
$ 
427.5 
Gross profit 
 
52.4 
 
53.7 
 
41.9 
 
180.6 
 
156.8 
EBITDA(1)
 
(31.4)  
74.5 
 
73.7 
 
24.8 
 
208.7 
Adjusted EBITDA(1)
 
59.1 
 
62.2 
 
50.3 
 
216.2 
 
183.5 
Cash flow from operations
 
60.8 
 
52.7 
 
49.4 
 
145.4 
 
163.1 
Net (loss) income
 
(48.9)  
41.4 
 
37.1 
 
(67.8)  
94.3 
Net (loss) income attributable to owners of 
the Company
 
(48.9)  
40.9 
 
36.5 
 
(68.5)  
92.8 
- Per share (basic)
 
(0.47)  
0.40 
 
0.37 
 
(0.66)  
0.99 
- Per share (diluted)
 
(0.47)  
0.39 
 
0.37 
 
(0.66)  
0.98 
Adjusted net income attributable to owners 
of the Company(1)
 
17.4 
 
27.6 
 
20.7 
 
80.4 
 
82.8 
- Per share (basic)
 
0.17 
 
0.27 
 
0.21 
 
0.78 
 
0.88 
- Per share (diluted)
 
0.17 
 
0.27 
 
0.21 
 
0.78 
 
0.87 
Cash, cash equivalents, and short-term 
investments
 
50.4 
 
20.2 
 
111.7 
 
50.4 
 
111.7 
Working (deficit) capital(1)
 
(69.9)  
(60.9)  
25.7 
 
(69.9)  
25.7 
Available liquidity(1)
 
90.4 
 
125.2 
 
261.7 
 
90.4 
 
261.7 
Net debt(1)
 
551.8 
 
518.7 
 
314.5 
 
551.8 
 
314.5 
(1)  Please refer to the section titled "Alternative Performance (Non-IFRS) Measures" within this MD&A.
Fourth Quarter and Full-Year 2024 Highlights
 
Record quarterly copper production contributed to strong cash flow from operations for the fourth 
quarter and full year
 
•
The continued ramp-up of the Tucumã Operation drove record quarterly copper production of 
12,883 tonnes, contributing to full-year copper production of 40,600 tonnes in concentrate.
◦
Steady ramp-up progress at the Tucumã Operation resulted in quarterly and full-year 
production of 4,317 tonnes and 5,156 tonnes, respectively. Mining operations continue 
to remain ahead of schedule. 
◦
The Caraíba Operations produced 8,566 tonnes of copper in concentrate at C1 cash 
costs(1) of $1.85 per pound of copper produced during the quarter, bringing full-year 
production to 35,444 tonnes at C1 cash costs(1) of $1.97 per pound.
•
The Xavantina Operations produced 8,936 ounces of gold during the quarter, resulting in C1 
cash costs(1) and AISC(1) of $744 and $1,691, respectively, per ounce of gold produced. Full-
year gold production was 57,210 ounces at C1 cash costs(1) and AISC(1) of $493 and $1,006, 
respectively, per ounce.
18
Annual Report | 2024

•
Higher copper production partially offset the impact of lower gold production during the 
quarter. For the full year, improved metal prices drove operating margin expansion, helping to 
mitigate the impact of lower copper and gold production.
◦
Cash flow from operations for the quarter and year were $60.8 million and $145.4 
million, respectively.
◦
Fourth quarter and full-year adjusted EBITDA(1) were $59.1 million and $216.2 million, 
respectively.
◦
Net loss attributable to the owners of the Company for the quarter and year were of 
$48.9 million ($0.47 per share on a diluted basis) and $68.5 million ($0.66 per share on 
a diluted basis), respectively.
◦
Adjusted net income attributable to the owners of the Company(1) for the quarter and 
year were $17.4 million ($0.17 per share on a diluted basis) and $80.4 million ($0.78 
per share on a diluted basis), respectively.
•
At year-end, available liquidity was $90.4 million, including $50.4 million in cash and cash 
equivalents, $15.0 million of undrawn availability under the Company's senior secured 
revolving credit facility ("Credit Facility"), and $25.0 million of undrawn availability under the 
Company's copper prepayment facility. In January 2025, the Company amended its Credit 
Facility to enhance financial flexibility and support its larger operational footprint. The 
amendment, which included an increase in aggregate commitments from $150 million to $200 
million, added $50 million of liquidity subsequent to year-end.
Drilling and engineering work underway on the Furnas Copper-Gold Project ("Furnas")
 
•
The Company commenced the Phase 1 drill program in mid-October 2024, completing 
approximately 2,800 meters of drilling during the fourth quarter. The Company expects to 
complete the 28,000-meter Phase 1 drill program in mid-2025 and the majority of the 17,000-
meter Phase 2 drill program by year-end 2025. These drill programs are focused on two 
identified high-grade zones, the NW and SE Zones, and include:
◦
Infill drilling to upgrade mineral resource classifications and increase continuity within 
high-grade zones
◦
Extensional drilling to depth, where the deposit remains open
•
On October 2, 2024, the Company published an initial mineral resource estimate(2) for Furnas, 
confirming the potential for a large-scale, high-grade underground mine. The Company plans 
to advance a preliminary economic assessment on the Project for publication in H1 2026.
(1)   Please refer to the section titled "Alternative Performance (Non-IFRS) Measures" within this MD&A.
(2)   For more information on the Furnas mineral resource estimate, please see the Company’s press release dated October 2, 
2024, and the report prepared by Anderson Gonçalves Candido, FAusIMM of RPM Global Canada Limited entitled 
“Furnas Copper Project - Pará State, Brazil – NI 43-101 Mineral Resource Estimate Technical Report” dated November 
18, 2024 with an effective date of June 30, 2024)
19
Annual Report | 2024

Subsequent Events
Amendment to the Credit Facility
 
In January 2025, the Company enhanced financial flexibility by amending its Credit Facility to support 
its larger operational footprint. Key updates to the Credit Facility include:
•
An increase in aggregate commitments from $150 million to $200 million.
•
An extension of the maturity date from December 2026 to December 2028.
•
Improved terms, including a 25-basis point reduction to the applicable margin on drawn funds 
at certain leverage ratios.
Executive Succession and Leadership Structure Update
 
As part of the Company's ongoing leadership succession planning, key executive transitions took 
effect on January 1, 2025.
•
David Strang, co-founder and former Chief Executive Officer, was appointed Executive 
Chairman of the Board, following the retirement of Noel Dunn, co-founder and Chairman.
•
Makko DeFilippo, formerly President and Chief Operating Officer, was appointed President and 
Chief Executive Officer and joined the Company's Board.
•
Gelson Batista succeeded Mr. DeFilippo as Chief Operating Officer.
In parallel, Mr. DeFilippo implemented a broader leadership reorganization in February 2024 to 
enhance operational stability and efficiency. The new structure consolidates leadership roles to 
support the Company's next phase of growth.
The executive leadership team, reporting to Mr. DeFilippo, is as follows:
 
•
Gelson Batista, Executive Vice President & Chief Operating Officer
•
Wayne Drier, Executive Vice President & Chief Financial Officer
•
Courtney Lynn, Executive Vice President, External Affairs & Strategy
•
Deepk Hundal, Executive Vice President, General Counsel & Corporate Secretary
•
Eduardo de Come, Executive Vice President, Brazil
As part of the Company's long-term succession plan, developed in 2022, Michel (Mike) Richard, a co-
founder of the Company and Chief Geological Officer, will retire at the end of March 2025. He will 
continue to support the Company in an advisory capacity as a member of the Furnas Technical 
Committee and provide ongoing guidance to the exploration team which will be led by Michael 
Hocking, Vice President Exploration. 
20
Annual Report | 2024

REVIEW OF OPERATIONS
The Caraíba Operations 
 
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Ore mined (tonnes)
 
713,980 
 
874,937 
 
886,271 
 
3,274,410 
 
3,341,121 
Ore processed (tonnes)
 
719,942 
 
900,289 
 
812,202 
 
3,431,294 
 
3,231,667 
Grade (% Cu)
 1.30 
 1.20 
 1.59 
 1.14 
 1.49 
Recovery (%)
 91.8 
 91.9 
 91.0 
 90.6 
 91.4 
Cu Production (tonnes)
 
8,566 
 
9,920 
 
11,760 
 
35,444 
 
43,857 
Cu Production (lbs)
 18,883,286 
 21,870,631 
 25,926,281 
 78,139,888 
 96,687,638 
Concentrate grade (% Cu)
 32.8 
 33.3 
 33.3 
 33.0 
 33.7 
Concentrate sales (tonnes)
 
25,743 
 
29,964 
 
34,332 
 
110,650 
 
131,002 
Cu Sold in concentrate (tonnes)
 
8,420 
 
9,970 
 
11,429 
 
36,557 
 
42,595 
Cu Sold in concentrate (lbs)
 18,562,541 
 21,980,217 
 25,196,731 
 80,593,665 
 93,905,643 
Realized copper price
$ 
3.82 
$ 
3.88 
$ 
3.52 
$ 
3.91 
$ 
3.64 
Copper C1 cash cost
$ 
1.85 
$ 
1.63 
$ 
1.75 
$ 
1.97 
$ 
1.80 
Copper C1 cash cost including foreign 
exchange hedges
$ 
2.07 
$ 
1.72 
$ 
1.59 
$ 
2.05 
$ 
1.68 
The Caraíba Operations achieved quarterly copper production of 8,566 tonnes in concentrate, bringing 
full-year copper production to 35,444 tonnes. Lower tonnes mined and processed resulted in an 
13.6% quarter-on-quarter decrease in copper production and contributed to a 13.5% increase in C1 
cash costs, which averaged $1.85 per pound of copper produced for the quarter. For the full year, C1 
cash costs and operating margins benefited from improved concentrate treatment and refining 
charges beginning in May 2024, as well as a more favorable USD to BRL exchange rate, resulting in 
weighted average full-year C1 cash costs of $1.97 per pound of copper produced.
Tonnes of ore mined in Q4 2024 included:
•
Pilar: 363,994 tonnes grading 1.51% copper (vs. 407,884 tonnes at 1.34% copper in Q3 2024)
•
Vermelhos: 269,482 tonnes grading 1.31% copper (vs. 250,365 tonnes at 1.47% copper in Q3 
2024)
•
Surubim: 80,504 tonnes at 0.36% copper (vs. 216,688 tonnes at 0.68% copper in Q3 2024)
For the full year, tonnes of ore mined included:
•
Pilar: 1,693,479 tonnes grading 1.32% copper (vs. 1,870,330 tonnes at 1.56% copper in 2023)
•
Vermelhos: 975,639 tonnes grading 1.25% copper (vs. 902,643 tonnes at 1.71% copper in 
2023)
•
Surubim: 605,292 tonnes at 0.62% copper (vs. 568,148 tonnes at 0.72% copper in 2023)
21
Annual Report | 2024

Contributions from the three mines resulted in total ore mined during the quarter of 713,980 tonnes 
grading 1.30% copper (vs. 874,937 tonnes at 1.21% copper in Q3 2024). For the full year, total ore 
mined was 3,274,410 tonnes grading 1.17% copper (vs. 3,341,121 tonnes at 1.46% copper in 2023).
During the quarter, the Company engaged an additional development contractor to support 
accelerated development rates and improved operational flexibility. Mobilization of the additional 
contractor is expected to be complete by the end of Q1 2025. 
The Caraíba Operations are expected to produce 37,500 to 42,500 tonnes of copper in concentrate in 
2025, reflecting higher mill throughput volumes compared to 2024. Production is anticipated to be 
lowest in Q1 2025 before increasing sequentially through year-end. 
The Company's full-year copper C1 cash cost guidance is $2.15 to $2.35 per pound of copper 
produced. The anticipated increase in unit costs compared to 2024 is primarily driven by longer 
average transport distances for ore and waste, resulting from the increased depth of planned mining 
activities across all three mines at the Caraíba Operations.
The Tucumã Operation 
 
2024 - Q4
2024 - Q3
2024
Ore mined (tonnes)
 
1,065,108 
 
867,315 
 
1,932,423 
Ore processed (tonnes)
 
223,013 
 
110,778 
 
333,791 
Grade (% Cu)
 2.17 
 1.00 
 1.78 
Recovery (%)
 89.1 
 75.7 
 86.6 
Cu Production (tonnes)
 
4,317 
 
839 
 
5,156 
Cu Production (lbs)
 
9,515,937 
 
1,850,043 
 11,365,980 
Concentrate grade (% Cu)
 28.6 
 25.5 
 28.0 
Concentrate sales (tonnes)
 
13,384 
 
1,652 
 
15,036 
Cu Sold in concentrate (tonnes)
 
3,750 
 
357 
 
4,107 
Cu Sold in concentrate (lbs)
 
8,268,310 
 
787,042 
 
9,055,352 
Realized copper price
$ 
3.48 
$ 
4.19 
$ 
3.55 
Ramp-up of the Tucumã Operation continued to deliver important progress during the quarter, despite 
a regional power disruption in early October (please refer to the Company's press releases dated 
October 5, 2024 and October 16, 2024) and challenges related to the tailings filtration circuit. 
Metallurgical recoveries and concentrate grades continued to remain in line with design targets, while   
volumes steadily increased month-over-month, driving significant improvements in both throughput 
and copper production during Q4 2024. Mining operations continued to progress ahead of schedule, 
contributing to run-of-mine stockpiles available for processing in 2025.
For the quarter, the Tucumã Operation processed 223,013 tonnes of ore producing 4,317 tonnes of 
copper in concentrate, bringing full-year processed volumes to 333,791 tonnes and total copper 
production of 5,156 tonnes in concentrate.
22
Annual Report | 2024

The Tucumã Operation is expected to produce 37,500 to 42,500 tonnes of copper in concentrate in 
2025, with commercial production anticipated in H1 2025. Mill throughput and copper production are 
expected to be lowest in Q1 2025, increasing sequentially through year-end. 
The Company's full-year copper C1 cash cost guidance is $1.05 to $1.25 per pound of copper 
produced. C1 cash costs for the Tucumã Operation will be reported following the achievement of 
commercial production.
The Xavantina Operations
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Ore mined (tonnes)
 
26,119 
 
41,761 
 
34,417 
 
146,160 
 
135,982 
Ore processed (tonnes)
 
26,120 
 
41,761 
 
34,416 
 
146,161 
 
136,002 
Head grade (grams per tonne Au)
 
11.18 
 
11.41 
 
17.18 
 
13.37 
 
15.13 
Recovery (%)
 92.8 
 92.5 
 88.7 
 92.0 
 89.5 
Gold ounces produced (oz)
 
8,936 
 
13,485 
 
16,867 
 
57,210 
 
59,222 
Silver ounces produced (oz)
 
5,654 
 
8,168 
 
9,907 
 
33,927 
 
37,674 
Gold sold (oz)
 
11,106 
 
14,615 
 
18,479 
 
60,195 
 
57,949 
Silver sold (oz)
 
6,426 
 
8,523 
 
9,618 
 
34,503 
 
35,655 
Realized gold price(1)
$ 
2,080 
$ 
2,382 
$ 
1,820 
$ 
2,142 
$ 
1,867 
Gold C1 cash cost
$ 
744 
$ 
539 
$ 
413 
$ 
493 
$ 
422 
Gold AISC
$ 
1,691 
$ 
1,034 
$ 
991 
$ 
1,006 
$ 
957 
(1) Realized Au price includes the effect of ounces sold under the stream arrangement with Royal Gold. See "Realized Gold 
Price" section of "Non-IFRS Measures" for detail.
The Xavantina Operations delivered quarterly gold production of 8,936 ounces, bringing full-year gold 
production to 57,210 ounces. Operations were temporarily halted in December to complete repairs 
identified during a routine inspection by Brazil's National Mining Agency, impacting fourth quarter and 
full-year production. Consequently, quarterly C1 cash costs and AISC were $744 and $1,691, 
respectively, per ounce of gold produced, bringing full-year C1 cash costs and AISC were $493 and 
$1,006, respectively, per ounce of gold produced.
The Xavantina Operations are expected to produce 50,000 to 60,000 ounces of gold in 2025, with 
mill throughput volumes projected to increase and mined and processed gold grades expected to 
return to long-term block model averages. The Company expects production to be weighted towards 
H2 2025 due to higher planned mined and processed tonnage.
The Company's full-year 2025 gold C1 cash cost guidance is $650 to $800 per ounce of gold 
produced. The gold AISC guidance range for 2025 is $1,400 to $1,600 per ounce of gold produced. 
23
Annual Report | 2024

2025 GUIDANCE
 
Consolidated copper production for 2025 is expected to range between 75,000 to 85,000 tonnes. The 
Company remains focused on steadily increasing plant throughput and achieving commercial 
production at the Tucumã Operation in H1 2025. As a result, copper production is expected to 
increase sequentially each quarter, with Tucumã expected to contribute significantly to the full-year 
consolidated copper production.
At the Xavantina Operations, annual gold production is expected to remain steady at 50,000 to 
60,000, with mill throughput volumes projected to increase and mined and processed gold grades 
expected to return to long-term block model averages.
Copper C1 cash cost guidance on a consolidated basis is $1.55 to $1.80 per pound of copper 
produced. This is based on C1 cash cost guidance ranges of $2.15 to $2.35 per pound for the Caraíba 
Operations and $1.05 to $1.25 per pound at the Tucumã Operation.
At the Xavantina Operations, the C1 cash cost guidance range of $650 to $800 per ounce of gold 
produced reflects a planned decrease in mined and processed gold grades. The AISC guidance range 
for 2025 is $1,400 to $1,600 per ounce of gold produced.
2025 Production and Cost Guidance
Consolidated Copper Production (tonnes)
Caraíba Operations
37,500 - 42,500
Tucumã Operation
37,500 - 42,500
Total Copper
75,000 - 85,000
Consolidated Copper C1 Cash Cost(1) Guidance
Caraíba Operations
$2.15 - $2.35
Tucumã Operation
$1.05 - $1.25
Consolidated Copper Operations
$1.55 - $1.80
The Xavantina Operations
Au Production (ounces)
50,000 - 60,000
Gold C1 Cash Cost(1) Guidance
$650 - $800
Gold AISC(1) Guidance 
$1,400 - $1,600
Note: Guidance is based on estimates and assumptions including, but not limited to, mineral reserve estimates, grade and 
continuity of interpreted geological formations and metallurgical recovery performance. Please refer to the Company’s 
SEDAR+ and EDGAR filings, including the most recent Annual Information Form ("AIF"), for a detailed summary of risk 
factors.
(1)  
Please refer to the section titled "Alternative Performance (Non-IFRS) Measures" within this MD&A. 
24
Annual Report | 2024

2025 Capital Expenditure Guidance
Capital expenditures are expected to decrease to a range of $230 to $270 million, primarily due to 
significantly lower capital expenditures at the Tucumã Operation following the completion of 
construction in 2024. 
Figures presented in the table below are in USD millions. 
Caraíba Operations
$165 - $180
Tucumã Operation(1)
$30 - $40
Xavantina Operations
$25 - $35
Furnas Copper-Gold Project and Other Exploration
$10 - $15
Total
$230 - $270
Note: Guidance is based on estimates and assumptions including, but not limited to, mineral reserve estimates, grade and 
continuity of interpreted geological formations and metallurgical recovery performance. Please refer to the Company’s 
SEDAR+ and EDGAR filings, including the most recent Annual Information Form ("AIF"), for a detailed summary of risk 
factors.
(1)   Excludes capitalized ramp-up costs prior to the declaration of commercial 
25
Annual Report | 2024

REVIEW OF FINANCIAL RESULTS
The following table provides a summary of the financial results of the Company for Q4 2024 and Q4 
2023. Tabular amounts are in thousands of US dollars, except share and per share amounts.
Three months ended December 31,
Notes
2024
2023
Revenue
1
$ 
122,539 $ 
116,414 
Cost of sales
2
 
(70,164)  
(74,560) 
Gross profit
 
52,375  
41,854 
Expenses
General and administrative
3
 
(13,646)  
(12,160) 
Share-based compensation
 
7,496  
(477) 
Write-down of exploration and evaluation asset
 
(839)  
— 
Income before the undernoted
 
45,386  
29,217 
Finance income
 
690  
1,989 
Finance expense
4
 
(3,851)  
(5,284) 
Foreign exchange (loss) gain
5
 
(92,804)  
24,871 
Other expenses
 
(4,211)  
(5,326) 
(Loss) income before income taxes
 
(54,790)  
45,467 
Income tax recovery (expense)
Current 
 
(6,583)  
(6,833) 
Deferred 
 
12,445  
(1,582) 
6
 
5,862  
(8,415) 
Net (loss) income for the period
$ 
(48,928) $ 
37,052 
Other comprehensive (loss) gain
Foreign currency translation (loss) gain
7
 
(79,146)  
26,074 
Comprehensive (loss) income
$ 
(128,074) $ 
63,126 
Net (loss) income per share attributable to owners of the 
Company
Basic
$ 
(0.47) $ 
0.37 
Diluted
$ 
(0.47) $ 
0.37 
Weighted average number of common shares outstanding
Basic
 
103,345,064  
98,099,791 
Diluted
 
103,345,064  
98,482,755 
26
Annual Report | 2024

Notes:
1. 
Revenues from copper sales in Q4 2024 was $99.8 million (Q4 2023 - $83.2 million) on sale of 26.8 million lbs of 
copper (Q4 2023 - 25.2 million lbs). The increase in copper revenues was primarily attributed to 28.1 million of 
incremental revenue from the new Tucumã Operations, higher average realized prices, partially offset by lower quantity 
sold at Caraíba.
Revenues from gold sales in Q4 2024 was $22.8 million (Q4 2023 - $33.2 million) on sale of 11,106 ounces of gold (Q4 
2023 - 18,479 ounces) at an average realized price of $2,080 per ounce (Q4 2023 - $1,820 per ounce). The decrease in 
gold revenues was attributable to a decrease in sales volume, partially offset by a higher realized gold price.
2. 
Cost of sales for Q4 2024 from copper sales was $56.1 million (Q4 2023 - $60.2 million) which primarily comprised of 
$15.3 million (Q4 2023 - $17.8 million) in depreciation and depletion, $11.5 million (Q4 2023 - $13.7 million) in salaries 
and benefits, $8.8 million (Q4 2023 - $10.2 million) in materials and consumables, $9.4 million (Q4 2023 - $6.5 million) 
in contracted services, $7.8 million (Q4 2023 - $7.9 million) in maintenance costs, $3.1 million (Q4 2023 - $2.6 million) 
in sales expenses, $2.3 million (Q4 2023 - $2.7 million) in utilities, and $2.4 million decrease (Q4 2023 - $1.4 million 
decrease) in changes in inventories. The decrease in cost of sales in Q4 2024 as compared to Q4 2023 was primarily 
attributable to a 11% decrease in tonnes processed at Caraíba Operations, resulting in lower materials and consumables 
costs and lower depreciation and depletion, partially offset by higher contracted service costs incurred to accelerate 
underground mine development. 
Cost of sales for Q4 2024 from gold sales was $14.0 million (Q4 2023 - $14.4 million) which primarily comprised of 
$4.6 million (Q4 2023 - $6.7 million) in depreciation and depletion, $2.7 million (Q4 2023 - $2.6 million) in salaries and 
benefits, $1.8 million (Q4 2023 - $1.6 million) in contracted services, $1.4 million (Q4 2023 - $1.7 million) in materials 
and consumables, $0.6 million (Q4 2023 - $0.7 million) in maintenance costs, $0.5 million (Q4 2023 - $0.6 million) in 
utilities, and $1.9 million increase (Q4 2023 - $0.1 million decrease) in change in inventories. The decrease in cost of 
sales as compared to Q4 2023 was primarily due to a decrease in gold ounces sold, resulting in lower depreciation and 
depletion, and lower materials and consumables costs.
3. 
General and administrative expenses for Q4 2024 was primarily comprised of $8.8 million (Q4 2023 - $5.4 million) in 
salaries and consulting fees, $3.1 million (Q4 2023 - $2.5 million) in office and administration expenses, $0.1 million (Q4 
2023 - $2.5 million) in incentive payments, $0.8 million (Q4 2023 - $0.9 million) in other costs, and $0.4 million (Q4 
2023 - $0.5 million) in accounting and legal costs. The increase in general and administrative expenses was mainly 
attributed to severance payments and consulting fees incurred for business development opportunities.
4. 
Finance expense for Q4 2024 was $3.9 million (Q4 2023 - $5.3 million) and is primarily comprised of other finance 
expense of $2.3 million (Q4 2023 - $3.2 million), accretion of deferred revenue of $0.6 million (Q4 2023 - $0.7 million), 
accretion of asset retirement obligations of $0.5 million (Q4 2023 - $0.7 million), lease interest of $0.5 million (Q4 2023 
- $0.6 million), and interest on loans and borrowings of nil (Q4 2023 - $0.1 million). Interest on loans and borrowings 
were net of $10.3 million (Q4 2023 - $7.0 million) in borrowing costs which were capitalized to projects in progress. The 
overall decrease in finance expense was attributable to an increase in capitalization of borrowing costs as a result of 
capital expenditures on construction projects. 
5. 
Foreign exchange loss for Q4 2024 was $92.8 million (Q4 2023 - $24.9 million gain). This amount is primarily 
comprised of $72.6 million (Q4 2023 - $11.2 million gain) in foreign exchange loss on USD denominated debt at MCSA 
for which the functional currency is the BRL, $15.2 million (Q4 2023 - $9.9 million gain) of unrealized foreign exchange 
loss on derivative contracts, $5.9 million (Q4 2023 - $4.2 million gain) of realized foreign exchange loss on derivative 
contracts, and partially offset by other foreign exchange gains of $1.0 million (Q4 2023 - $0.4 million losses). The 
unrealized foreign exchange loss on USD denominated debt and on derivative contracts was a result of a 12% 
weakening of the BRL against the USD during the period.
6. 
In Q4 2024, the Company recognized $5.9 million in income tax recovery (Q4 2023 an expense of $8.4 million). The 
recovery in income tax expense was primarily a result of losses before taxes as compared to income before taxes in the 
same quarter of the prior year.
7. 
The foreign currency translation loss is a result of a fluctuation of the BRL against the USD during Q4 2024, which 
weakened from approximately 5.45 BRL per US dollar at the beginning of Q4 2024 to approximately 6.19 BRL per US 
dollar by the end of the quarter, when translating the net assets of the Company’s Brazilian subsidiaries to USD for 
presentation in the Company’s consolidated financial statements.
27
Annual Report | 2024

The following table provides a summary of the financial results of the Company for Fiscal 2024, 2023 
and 2022. Tabular amounts are in thousands of US dollars, except share and per share amounts.
Year ended December 31,
Notes
2024
2023
2022
Revenue
1
$ 
470,259 $ 
427,480 $ 
426,392 
Cost of sales
2
 
(289,706)  
(270,635)  
(239,217) 
Gross profit
 
180,553  
156,845  
187,175 
Expenses
General and administrative
3
 
(49,598)  
(52,429)  
(49,459) 
Share-based compensation
 
(9,983)  
(9,218)  
(7,931) 
Write-down of exploration and evaluation asset
4
 
(12,051)  
—  
— 
Income before the undernoted
 
108,921  
95,198  
129,785 
Finance income
 
4,300  
12,465  
10,295 
Finance expense
5
 
(17,089)  
(25,822)  
(33,223) 
Foreign exchange (loss) gain
6
 
(165,008)  
34,612  
19,910 
Other expenses
 
(6,565)  
(4,102)  
(384) 
(Loss) income before income taxes
 
(75,441)  
112,351  
126,383 
Income tax recovery (expense)
Current 
 
(17,662)  
(15,992)  
(15,043) 
Deferred 
 
25,313  
(2,055)  
(8,273) 
7
 
7,651  
(18,047)  
(23,316) 
Net (loss) income for the period
$ 
(67,790) $ 
94,304 $ 
103,067 
Other comprehensive (loss) gain
Foreign currency translation (loss) gain
8
 
(165,027)  
52,656  
29,897 
Comprehensive (loss) income
$ 
(232,817) $ 
146,960 $ 
132,964 
Net (loss) income per share attributable to owners 
of the Company
Basic
$ 
(0.66) $ 
0.99 $ 
1.12 
Diluted
$ 
(0.66) $ 
0.98 $ 
1.10 
Weighted average number of common shares 
outstanding
Basic
 103,106,305  
94,111,548  
90,789,925 
Diluted
 103,106,305  
94,896,334  
92,170,656 
28
Annual Report | 2024

Notes:
1. 
Revenues from copper sales in Fiscal 2024 amounted to $343.0 million (Fiscal 2023 - $320.6 million), reflecting the sale 
of 89.6 million lbs of copper compared to 93.9 million lbs of copper for Fiscal 2023. The increase in revenues was 
primarily due to $31.2 million of incremental revenue from the new Tucumã Operations, higher realized copper prices, 
partially offset by 14% lower copper sales at Caraíba. 
Revenues from gold sales in Fiscal 2024 amounted to $127.3 million (Fiscal 2023 - $106.9 million), reflecting the sale 
of 60,195 ounces of gold at a realized price of $2,142 per ounce, compared to 57,949 ounces of gold sold at a realized 
price of $1,867 per ounce in Fiscal 2023. The increase in revenues was driven by both higher sales volume and improved 
gold prices compared to the prior year.
2. 
Cost of sales for Fiscal 2024 from copper sales was $237.3 million (Fiscal 2023 - $224.2 million) which primarily 
consisted of $65.3 million (Fiscal 2023 - $62.0 million) in depreciation and depletion, $51.0 million (Fiscal 2023 - $51.4 
million) in salaries and benefits, $37.5 million (Fiscal 2023 - $38.1 million) in materials and consumables, $35.4 million 
(Fiscal 2023 - $26.9 million) in contracted services, $29.5 million (Fiscal 2023 - $28.9 million) in maintenance costs, 
$10.2 million (Fiscal 2023 - $11.2 million) in utilities, and $9.1 million (Fiscal 2023 - $9.0 million) in sales expenses. The 
increase in cost of sales was primarily attributed to a 6% increase in tonnes processed, higher depreciation and depletion 
from an expanded depletable asset base, and increased contracted services to accelerate mine development at the 
Caraíba Operations. 
Cost of sales for Fiscal 2024 from gold sales was $52.4 million (Fiscal 2023- $46.5 million) which primarily comprised 
of $20.4 million (Fiscal 2023 - $19.5 million) in depreciation and depletion, $10.3 million (Fiscal 2023 - $9.2 million) in 
salaries and benefits, $7.6 million (Fiscal 2023 - $6.0 million) in contracted services, $6.7 million (Fiscal 2023 - $6.2 
million) in materials and consumables, $2.5 million (Fiscal 2023 - $2.1 million) in maintenance costs, and $2.3 million 
(Fiscal 2023 - $2.3 million) in utilities. The increase in cost of sales was mainly attributed to higher utilization of third 
party mining contractor to perform manual mining, as well as a 4% increase in gold sales, accompanied with higher 
depreciation and depletion.
3. 
General and administrative expenses for Fiscal 2024 was primarily comprised of $28.7 million (Fiscal 2023 - $29.3 
million) in salaries and consulting fees, $10.1 million (Fiscal 2023 - $9.0 million) in office and administrative expenses, 
$4.3 million (Fiscal 2023 - $6.9 million) in incentive payments, $2.9 million (Fiscal 2023 - $3.7 million) in other general 
and administrative expenses, and $1.9 million (Fiscal 2023 - $2.0 million) in accounting and legal fees.
4. 
In Fiscal 2024, the Company recognized a write-down in exploration and evaluation assets of $12.1 million (Fiscal 2023 
- nil), primarily related to the termination of the Fides option agreement.
5. 
Finance expense for Fiscal 2024 was $17.1 million (Fiscal 2023 - $25.8 million) and was primarily comprised of other 
finance expense of $10.4 million (Fiscal 2023 - $7.3 million) primarily due to higher expected credit loss provision on a 
note receivable, accretion of deferred revenue of $2.5 million (Fiscal 2023 - $3.0 million), accretion of the asset 
retirement obligations of $2.3 million (Fiscal 2023 - $2.7 million), lease interest of $1.8 million (Fiscal 2023 - $1.5 
million), and nil (Fiscal 2023 - $11.3 million) from interest on loans and borrowings (net of capitalization of borrowing 
costs). During Fiscal 2024, $36.5 million (Fiscal 2023 - $17.0 million) in interest was capitalized to projects in progress. 
The overall decrease in finance expense was primarily attributable to higher interest capitalized as a result of capital 
expenditures incurred on various qualifying projects, partially offset by an increased interest on new loans and 
borrowings.
6. 
Foreign exchange loss for Fiscal 2024 was $165.0 million (Fiscal 2023 - $34.6 million gain). This amount was primarily 
comprised of a foreign exchange loss of $129.4 million (Fiscal 2023 - $18.7 million gain) on USD denominated debt in 
MCSA, for which the functional currency is the BRL. In addition, the Company recognized a foreign exchange loss on 
unrealized derivative contracts of $30.8 million (Fiscal 2023 - $7.6 million gain) and realized foreign exchange loss on 
derivative contracts of $8.2 million (Fiscal 2023 - $11.4 million gain), partially offset by other foreign exchange gains of 
$3.4 million (Fiscal 2023 - $3.1 million losses). The fluctuation in foreign exchange gains/losses were primarily a result 
of increased volatility of the USD/BRL foreign exchange rates, where the BRL weakened 19.3% against the USD during 
Fiscal 2024.
7. 
In Fiscal 2024, the Company recognized an $7.7 million income tax recovery (Fiscal 2023 - $18.0 million expense), The 
change was primarily a result of a net loss before income taxes.
29
Annual Report | 2024

8. 
The foreign currency translation loss is a result of fluctuations of the BRL against the USD during Fiscal 2024, which 
weakened from approximately 4.84 BRL per US dollar at the beginning of 2024 to approximately 6.19 BRL per US 
dollar by the end of the quarter, when translating the net assets of the Company’s Brazilian subsidiaries to USD for 
presentation in the Company’s consolidated financial statements.
SUMMARY OF QUARTERLY RESULTS
The following table presents selected financial information for each of the most recent eight quarters. 
Tabular amounts are in millions of US Dollars, except share and per share amounts.
Selected Financial 
Information
Dec. 31,(1)
Sep. 30,(2)
Jun. 30,(3)
Mar. 31,(4)
Dec. 31,(5)
Sep. 30,(6)
Jun. 30,(7)
Mar. 31,(8)
2024
2024
2024
2024
2023
2023
2023
2023
Revenue
$ 
122.5 
$ 
124.8 
$ 
117.1 
$ 
105.8 
$ 
116.4 
$ 
105.2 
$ 
104.9 
$ 
101.0 
Cost of sales
$ 
(70.2) $ 
(71.1) $ 
(73.8) $ 
(74.6) $ 
(74.6) $ 
(69.7) $ 
(65.5) $ 
(60.8) 
Gross profit
$ 
52.4 
$ 
53.7 
$ 
43.3 
$ 
31.2 
$ 
41.9 
$ 
35.5 
$ 
39.4 
$ 
40.1 
Net (loss) income for 
period
$ 
(48.9) $ 
41.4 
$ 
(53.4) $ 
(6.8) $ 
37.1 
$ 
2.8 
$ 
29.9 
$ 
24.5 
(Loss) income per share 
attributable to 
owners of the 
Company
- Basic
$ 
(0.47) $ 
0.40 
$ 
(0.52) $ 
(0.07) $ 
0.37 
$ 
0.03 
$ 
0.32 
$ 
0.26 
- Diluted
$ 
(0.47) $ 
0.39 
$ 
(0.52) $ 
(0.07) $ 
0.37 
$ 
0.03 
$ 
0.32 
$ 
0.26 
Weighted average 
number of common 
shares outstanding
- Basic
 103,345,064  103,239,881  103,082,363  102,769,444  98,099,791  93,311,434  92,685,916  92,294,045 
- Diluted
 103,345,064  103,973,827  103,082,363  102,769,444  98,482,755  94,009,268  93,643,447  93,218,281 
Notes:
1.
During Q4 2024, the Company recognized net loss of $48.9 million compared to net income of $41.4 million in the 
preceding quarter. The decrease in net income was primarily attributable to foreign exchange losses of $92.8 million 
compared to foreign exchange gains of $17.2 million in the preceding quarter, partially offset by income tax recovery of 
$5.9 million compared to income tax expense of $8.3 million in the preceding quarter. 
2.
During Q3 2024, the Company recognized net income of $41.4 million compared to net loss of $53.4 million in the 
preceding quarter. The increase in net income was primarily attributable to higher revenues, as well as foreign exchange 
gains of $17.2  million compared to foreign exchange losses of $70.5 million in the preceding quarter, as well as a 
$10.7 million write-down in exploration and evaluation assets recognized in the preceding quarter. 
3.
During Q2 2024, the Company recognized net loss of $53.4 million compared to net loss of $6.8 million in the preceding 
quarter. The increase in loss was primarily attributable to foreign exchange losses of $70.5 million compared to $19.0 
million in the preceding quarter. The change in foreign exchange gain or loss was primarily driven by volatility of the 
Brazilian Real against the US Dollar during the respective periods. In addition, during the quarter, the Company 
terminated the Fides option agreement, resulting in a write-down in exploration and evaluation assets of $10.7 million.
4.
During Q1 2024, the Company recognized net loss of $6.8 million compared to net income of $37.1 million in the 
preceding quarter. The decrease in income was primarily attributable to foreign exchange losses of $19.0 million 
compared to foreign exchange gains of $24.9 million in the preceding quarter. The change in foreign exchange gain or 
loss was primarily driven by volatility of the Brazilian Real against the US Dollar during the respective periods.
30
Annual Report | 2024

5.
During Q4 2023, the Company recognized net income of $37.1 million compared to $2.8 million in the preceding 
quarter. The increase was primarily attributable to foreign exchange gains of $24.9 million compared to foreign 
exchange losses of $13.9 million in the preceding quarter. The change in foreign exchange gain or loss was primarily 
driven by volatility of the Brazilian Real against the US Dollar during the respective periods.
6.
During Q3 2023, the Company recognized net income of $2.8 million compared to $29.9 million in the preceding 
quarter. The decrease was primarily attributable to foreign exchange losses of $13.9 million compared to foreign 
exchange gain of $15.1 million in the preceding quarter. The change in foreign exchange gain or loss was primarily 
driven by volatility of the Brazilian Real against the US Dollar during the respective periods. 
7.
During Q2 2023, the Company recognized net income of $29.9 million compared to $24.5 million in the preceding 
quarter. The increase was primarily attributable to an increase in foreign exchange gain and the recognition of an 
unrealized gain in copper derivative contracts. 
8.
During Q1 2023, the Company recognized net income of $24.5 million compared to $22.5 million in the preceding 
quarter. The increase was primarily attributable to an increase in foreign exchange gain, a reduction in general and 
administrative expenses, and a reduction in finance expense. In the prior quarter, the Company recognized a $3.3 million 
expected credit loss provision.
LIQUIDITY, CAPITAL RESOURCES, AND CONTRACTUAL OBLIGATIONS
Liquidity
As at December 31, 2024, the Company had cash and cash equivalents of $50.4 million and available 
liquidity of $90.4 million. Cash and cash equivalents were primarily comprised of cash held with 
reputable financial institutions and are invested in highly liquid short-term investments with maturities 
of three months or less. The funds are not exposed to liquidity risk and there are no restrictions on the 
ability of the Company to use these funds to meet its obligations.
Cash and cash equivalents decreased by $61.3 million from December 31, 2023. The Company’s cash 
flows from operating, investing, and financing activities during 2024 are summarized as follows:
•
Cash used in investing activities of $335.4 million, including:
◦
$329.0 million of additions to mineral property, plant and equipment; and
◦
$8.6 million of additions to exploration and evaluation assets; 
net of: 
◦
$2.2 million in proceeds from interest received.
Partially offset by:
•
Cash from operating activities of $145.4 million, primarily consists of:
◦
$216.2 million of adjusted EBITDA (see Non-IFRS Measures); 
net of:
◦
$25.7 million of net change in non-cash working capital items; 
◦
$18.3 million of amortization of non-cash deferred revenues; and
◦
$8.2 million of income taxes paid.
•
Cash from financing activities of $131.2 million, primarily consists of:
◦
$213.3 million of new loans and borrowings; and
◦
$8.4 million of proceeds from exercise of stock options.
net of:
31
Annual Report | 2024

◦
$40.0 million of principal repayments on loans and borrowings;
◦
$32.2 million of interest paid on loans and borrowings; and
◦
$14.2 million of lease payments.
As at December 31, 2024, the Company had working capital deficit of $69.9 million.
Capital Resources
The Company’s primary sources of capital are comprised of cash from operations, and cash and cash 
equivalents on hand. The Company continuously monitors its liquidity position and capital structure 
and, based on changes in operations and economic conditions, may adjust such structure by issuing 
new common shares or new debt as necessary. Taking into consideration expected cash flow from 
existing operations and available liquidity, management believes that the Company has sufficient 
capital to fund its planned operations and activities, including the capital expenditures to complete the 
Tucumã Project, and other initiatives, for the foreseeable future.
At December 31, 2024, the Company had available liquidity of $90.4 million, including $50.4 million 
in cash and cash equivalents, $15.0 million of undrawn availability under its senior secured revolving 
credit facility and $25.0 million of undrawn availability under its copper repayment facility until 
March 31, 2025. 
Subsequent to December 31, 2024, the Company amended its Credit Facility to increase the limit from 
$150.0 million to $200.0 million and to extend the maturity from December 2026 to December 2028. 
The interest rate and commitment fee on the Credit Facility were reduced to sliding scales of SOFR 
plus 2.00% to 4.25%, and 0.45% to 0.96%, respectively. Additionally, the total leverage ratio was 
replaced with net leverage ratio for purposes of determining financial covenants and interest rates. 
In May 2024, to support the commencement of production and associated working capital needs at 
the Tucumã Project, the Company entered into a $50.0 million non-priced copper prepayment facility, 
structured by the Bank of Montreal and with participation by CIBC Capital Markets. This facility will be 
repaid over 27 equal monthly installments, beginning in October 2024, through the delivery of 
272  tonnes of copper each month. Each monthly delivery's value will be determined based on 
prevailing market copper prices at the time of delivery. Should the value of any delivery exceed the 
amount of the monthly installment payment of $2.1 million, the excess value will be repaid to the 
Company. The copper to be delivered by the Company will be in the form of LME Copper Warrants. 
Through March 31, 2025, the Company has the option to increase the size of the non-priced copper 
prepayment facility from $50.0 million to $75.0 million.
In relation to its loans and borrowings, the Company is required to comply with certain financial 
covenants. As of the date of the consolidated financial statements, the Company is in compliance with 
these covenants. The loan agreements also contain covenants that could restrict the ability of the 
Company and its subsidiaries, MCSA, Ero Gold, and NX Gold, to, among other things, incur additional 
indebtedness needed to fund its respective operations, pay dividends or make other distributions, 
make investments, create liens, sell or transfer assets or enter into transactions with affiliates. There 
are no other restrictions or externally imposed capital requirements of the Company.
32
Annual Report | 2024

Contractual Obligations and Commitments
The Company has a precious metals purchase agreement with RGLD Gold AG ("Royal Gold"), a 
wholly-owned subsidiary of Royal Gold, Inc., whereby the Company is obligated to sell a portion of its 
gold production from the Xavantina Operations at contract prices. 
Refer to the "Liquidity Risk" section for further information on the Company's contractual obligations 
and commitments.
MANAGEMENT OF RISKS AND UNCERTAINTIES
The Company thoroughly examines the various financial instruments and risks to which it is exposed 
and assesses the impact and likelihood of those risks. These risks may include credit risk, liquidity risk, 
currency risk, commodity price risk and interest rate risk. Where material, these risks are reviewed and 
monitored by the Board.
Credit risk 
Credit risk is the risk of financial loss to the Company if a customer or counterparty to a financial 
instrument fails to meet its contractual obligations and arises principally from the Company’s 
receivables from customers. The carrying amount of the financial assets below represents the 
maximum credit risk exposure as at December 31, 2024 and December 31, 2023:
December 31, 
2024
December 31, 
2023
Cash and cash equivalents
 
50,402 $ 
111,738 
Accounts receivable
 
18,399  
5,710 
Derivatives
 
— 
 
11,254 
Note receivable
 
12,009  
17,413 
Deposits and other assets
 
4,961  
9,484 
$ 
85,771 $ 
155,599 
The Company invests cash and cash equivalents with financial institutions that are financially sound 
based on their credit rating. 
The Company’s exposure to credit risk associated with accounts receivable is influenced mainly by the 
individual characteristics of each customer. 
In 2022, one of the Company's customers in Brazil, Paranapanema S/A ("PMA"), filed for bankruptcy 
protection. As a preferred supplier to PMA, the Company had a note receivable arrangement with 
PMA, which was excluded from the judicial recovery process and provides the Company with certain 
judicial guarantees. According to the note receivable arrangement, repayment was structured over 24 
monthly installments beginning in March 2024, with an annual interest rate equivalent to Brazil's CDI 
rate of approximately 11.65%. 
At December 31, 2024, PMA is in default of the agreement and the gross amount of accounts and 
note receivable from PMA was $20.7 million (December 31, 2023 - $25.2 million). Accordingly, the 
33
Annual Report | 2024

note receivable is considered credit impaired, and the Company increased the expected credit loss 
provision by $8.0 million in the year ended December 31, 2024 (provision of $4.1 million for the year 
ended December 31, 2023). After adjusting for credit loss provision and present value discount of 
$13.1  million (December 31, 2023 - $7.7  million), the book value of the PMA note receivable at 
December 31, 2024 was $7.6  million (December 31, 2023 - $17.4  million.), of which $3.9  million 
(December 31, 2023 - $8.3 million) was included in other curret assets.
Liquidity risk 
Liquidity risk is the risk associated with the difficulties that the Company may have meeting the 
obligations associated with financial liabilities that are settled with cash payments or with another 
financial asset. The Company's approach to liquidity management is to ensure as much as possible 
that sufficient liquidity exists to meet their maturity obligations on the expiration dates, under normal 
and stressful conditions, without causing unacceptable losses or with risk of undermining the normal 
operation of the Company. 
The table below shows the Company's maturity of non-derivative financial liabilities on December 31, 
2024:
Non-derivative financial 
liabilities
Carrying 
value
Contractual 
cash flows
Up to 
12 
months
1 - 2 
years
3 - 5 
years
More than 
5 years
Loans and borrowings (including 
interest)
$ 602,189 
$ 
791,475 
$ 
74,251 
$ 105,989 
$ 611,235 
$ 
— 
Accounts payable and accrued 
liabilities
 
95,120 
 
95,120 
 
95,120 
 
— 
 
— 
 
— 
Other non-current liabilities
 
5,825 
 
5,825 
 
— 
 
4,771 
 
666 
 
388 
Leases
 
17,885 
 
19,431 
 
11,995 
 
6,398 
 
1,038 
 
— 
Total
$ 721,019 
$ 
911,851 
$ 181,366 
$ 117,158 
$ 612,939 
$ 
388 
As at December 31, 2024, the Company has capital commitments, which is net of advances to 
suppliers, of $51.2 million through contracts and purchase orders which are expected to be incurred 
over a six-year period. In the normal course of operations, the Company may also enter into long-term 
contracts which can be cancelled with certain agreed customary notice periods without material 
penalties. 
The Company also has a derivative financial liability for foreign exchange collar contracts whose 
notional amounts and maturity information are disclosed below under foreign exchange currency risk.
Foreign exchange currency risk 
The Company’s subsidiaries in Brazil are exposed to exchange risks primarily related to the US dollar. 
In order to minimize currency mismatches, the Company monitors its cash flow projections considering 
future sales expectations indexed to US dollar variation in relation to the cash requirement to settle 
the existing financings.
The Company's exposure to foreign exchange currency risk at December 31, 2024 relates to $60.0 
million (December 31, 2023 – $17.2 million) in loans and borrowings of MCSA denominated in US 
34
Annual Report | 2024

dollars and Euros. In addition, the Company is also exposed to foreign exchange currency risk at 
December 31, 2024 on $513.6 million of intercompany loan balances (December 31, 2023 - $342.2 
million) which have contractual repayment terms. Strengthening (weakening) in the Brazilian Real 
against the US dollar at December 31, 2024 by 10% and 20%, would have decreased (increased) pre-
tax net loss by $57.3 million and $114.6 million, respectively. This analysis is based on the foreign 
currency exchange variation rate that the Company considered to be reasonably possible at the end of 
the year and excluding the impact of the derivatives below. The analysis assumes that all other 
variables, especially interest rates, are held constant.
The Company may use certain foreign exchange derivatives, including collars and forward contracts, 
to manage its foreign exchange risks. A summary of the Company's foreign exchange derivatives at 
December 31, 2024 is summarized as follows: 
Purpose
Notional 
Amount
Denomination
Weighted 
average floor
Weighted 
average cap / 
forward price
Maturities
Operational costs
$390.0 million
USD/BRL
5.43
6.49
Jan 2025 - Dec 2025
Total
$390.0 million
USD/BRL
5.43
6.43
Jan 2025 - Dec 2025
The aggregate fair value of the Company's foreign exchange derivatives was a net liability of $17.9 
million (December 31, 2023 - asset of $11.3 million). The fair values of foreign exchange contracts 
were determined based on option pricing models, forward foreign exchange rates, and information 
provided by the counter party. 
The change in fair value of foreign exchange derivatives was a loss of $30.8 million for the year ended 
December 31, 2024 (a gain of $7.6 million for the year ended December 31, 2023), which has been 
recognized in foreign exchange (loss) gain. 
In addition, during the year ended December 31, 2024, the Company recognized a realized loss of 
$8.2 million (realized gain of $11.4 million for the year ended December 31, 2023) related to the 
settlement of foreign currency forward collar contracts.
Interest rate risk
The Company is principally exposed to the variation in interest rates on loans and borrowings with 
variable rates of interest. Management reduces interest rate risk exposure by entering into loans and 
borrowings with fixed rates of interest or by entering into derivative instruments that fix the ultimate 
interest rate paid.
The Company is principally exposed to interest rate risk through its Senior Credit Facility and Brazilian 
Real denominated bank loans. Based on the Company’s net exposure at December 31, 2024, a 1% 
change in the variable rates would not materially impact its pre-tax annual net income.
Price risk 
The Company may use derivatives, including forward contracts, collars and swap contracts, to manage 
commodity price risks.
35
Annual Report | 2024

At December 31, 2024, the Company has entered into zero-cost gold collar contracts on 2,500 ounces 
of gold per month from January 2025 to December 2025, representing approximately 50% of its 
estimated production volumes for the period. As of December 31, 2024, the fair value of these 
contracts was a net liability of $0.1 million (December 31, 2023 - nil). The fair value of gold collar 
contracts was determined based on option pricing models, forward gold price, and information 
provided by counter party. At December 31, 2024, the Company does not have any outstanding 
copper collar contracts (December 31, 2023 - liability of $0.6 million).  
During the year ended December 31, 2024, the Company recognized an unrealized gain of $0.2 
million (unrealized loss of $0.1 million for the year ended December 31, 2023) and a realized loss of 
$2.6 million (realized loss of $1.8 million for the year ended December 31, 2023) in relation to its 
commodity derivatives in in other income or loss. 
At December 31, 2024, the Company had provisionally priced sales that are exposed to commodity 
price changes. Based on the Company’s net exposure at December 31, 2024, a 10% change in the 
price of copper would have changed pre-tax net income (loss) $6.1 million. 
For a discussion of additional risks applicable to the Company and its business and operations, 
including risks related to the Company’s foreign operations, the environment and legal proceedings, 
see “Risk Factors” in the Company’s AIF.
OTHER FINANCIAL INFORMATION
Off-Balance Sheet Arrangements
As at December 31, 2024, the Company had no material off-balance sheet arrangements. 
Outstanding Share Data
As of March 6, 2025, the Company had 103,571,507 common shares issued and outstanding. 
ACCOUNTING POLICIES, JUDGMENTS AND ESTIMATES
Critical Accounting Judgments and Estimates
The preparation of consolidated financial statements in conformity with IFRS requires management to 
make judgments, estimates and assumptions about future events that affect the reported amounts of 
assets and liabilities at the date of the financial statements and the reported amounts of revenue and 
expenses during the reporting period. Although these estimates are based on management’s best 
knowledge of the amount, events or actions, actual results may differ from these estimates. 
The Company’s material accounting policies and accounting estimates are contained in the Company’s 
consolidated financial statements for the year ended December 31, 2024. Judgements have been 
made in the determination of the functional currency of the Company and its subsidiaries, assessment 
of the probability of cash outflow related to legal claims and contingent liabilities, and 
commencement of commercial production. Certain of the Company's accounting policies, such as 
36
Annual Report | 2024

derivative instruments, deferred revenue, carrying amounts of mineral properties and associated mine 
closure and reclamation costs, provision for mine closure and reclamation costs, income tax including 
tax uncertainties, expected credit losses involve critical accounting estimates. Certain of these 
estimates are dependent on mineral reserves and resource information. Changes in mineral reserves 
and resources could impact depreciation and depletion rates, asset carrying amounts and the 
provisions for mine closure and reclamation costs. The Company determines its mineral reserves and 
resources based on information compiled by competent individuals. Information regarding mineral 
reserves and resources is used in the calculation of depreciation, depletion and determination, when 
applicable, of the recoverable amount of CGUs, and for forecasting the timing of reclamation and 
closure cost expenditures. There are numerous uncertainties inherent in the determination of mineral 
reserves, and assumptions that are valid at the time of determination may change significantly when 
new information becomes available. Changes in the methodology, forecasted prices of commodities, 
exchange rates, production costs or recovery rates may change the economic status of mineral 
reserves and may, ultimately, result in changes in the mineral reserves.
Management continuously reviews its estimates, judgments and assumptions on an ongoing basis 
using the most current information available. Revisions to estimates are recognized prospectively. 
Critical Judgments 
Functional currency
The functional currency of the Company and each of its subsidiaries is the currency of the primary 
economic environment in which the entities operate.  The Company has determined that the functional 
currency for the Company is the US dollar while the functional currency for all of its Brazilian 
subsidiaries is the BRL. Assessment of functional currency involves certain judgments to determine 
the primary economic environment and the Company reconsiders the functional currency of its entities 
if there is a change in events and conditions which determined the primary economic environment.
Legal claims and contingent liabilities
The recognition of legal provisions and contingent liabilities involves the assessment of claims made 
against the Company and each of its subsidiaries.  The recognition of a legal provision, or disclosure of 
a contingent liability, involves certain judgments to determine the probability of whether a cash 
outflow will occur.  In making this judgment, management has assessed various criteria and also relies 
on the opinions of its legal advisers to assist in making this assessment.
Commencement of Commercial Production
Determining when a mine under construction is substantially complete and ready for its intended use 
requires significant judgement. The criteria the Company used to make that determination for the  
Tucumã Operation included, amongst other things:
•
the ability of the mine to produce salable product (i.e. the ability to produce metal within 
specifications),
•
throughput of the processing plant reach a predefined percentage of design capacity over a 
reasonable period,
•
processing plant recoveries reaching a pre-defined percentage of expected recoveries. 
37
Annual Report | 2024

After evaluating the above factors, the Company concluded that the Tucumã Operation had not 
achieved commercial production as of December 31, 2024, and therefore, is not yet ready for its 
intended use.
Key Sources of Estimation Uncertainty 
The preparation of financial statements in conformity with IFRS requires management to make 
estimates and assumptions that affect the reported amounts of assets and liabilities and the 
disclosure of assets and liabilities at the date of the consolidated financial statements and the 
reported amounts of expenses during the reporting periods. Actual results could differ from those 
estimates and such differences could be significant. Significant estimates made by management 
affecting the consolidated financial statements include: 
Derivative instruments
The fair value of derivative instruments is determined using either present value techniques or option 
pricing models that utilize a variety of inputs that are a combination of quoted prices and market-
corroborated inputs, including assumptions for forward interest and foreign exchange rates, volatilities 
and discount rates. The fair value of the Company’s derivative contracts includes an adjustment for 
credit risk for either the Company or the counter party as applicable. Changes in the assumptions for 
inputs into the models affect the fair value of the derivatives recognized in the statement of financial 
position as well as the unrealized gains or losses recognized in net income.
Carrying amounts of mineral properties and associated mine closure and reclamation costs
Changes in mineral reserves and resources information could impact depreciation and depletion rates, 
asset carrying amounts and the provisions for mine closure and reclamation costs. The Company 
determines its mineral reserves and resources based on information compiled by competent 
individuals. Mineral reserves and resources information is used in the calculation of depreciation, 
depletion and determination, when applicable, of the recoverable amount of CGUs, and for forecasting 
the timing of reclamation and closure cost expenditures. 
There are numerous uncertainties inherent in estimating mineral reserves, and assumptions that are 
valid at the time of estimation may change significantly when new information becomes available. 
Changes in the estimation methodology, forecasted prices of commodities, exchange rates, production 
costs or recovery rates may change the economic status of mineral reserves and may, ultimately, 
result in changes in the mineral reserves.
Mine closure and reclamation costs
Significant estimates and assumptions are made in determining the provision for mine closure and 
reclamation costs as there are numerous factors that will affect the ultimate liability payable. These 
factors include estimation of the extent and cost of rehabilitation activities, timing of future cash flows, 
discount rates, inflation rate, and regulatory requirements.
Changes in the above factors can result in a change to the provision recognized by the Company. 
Changes to mine closure and rehabilitation costs are recorded with a corresponding change to the 
carrying amounts of related mineral properties, plant and equipment. Adjustments to the carrying 
amounts of related mineral properties, plant and equipment can result in a change to future 
depreciation and depletion expense.Income taxes
38
Annual Report | 2024

Income taxes
The determination of the Company’s tax expense for the period and deferred tax assets and liabilities 
involves significant estimation and judgment by management. In determining these amounts, 
management interprets tax legislation in a variety of jurisdictions and makes estimates of the 
expected timing of the reversal of deferred tax assets and liabilities. Management also makes 
estimates of future earnings, which affect the extent to which potential future tax benefits may be 
used. The Company is subject to assessments by various taxation authorities, which may interpret 
legislation differently. These differences may affect the final amount or the timing of the payment of 
taxes. The Company provides for such differences where known based on management’s best 
estimate of the probable outcome of these matters.
The Company operates in Brazil where tax authorities may audit income tax treatments and the 
resolution of such audits may span multiple years. Tax law in Brazil is complex and often subject to 
changes and to varied interpretations; accordingly, the ultimate outcome with respect to income tax 
treatments may differ from the amounts recognized. The Company’s assessment of whether it is 
probable that uncertain income tax treatments will be accepted by tax authorities in Brazil is a 
significant management judgment.
Deferred Revenue
Judgment and estimates were required in determining the accounting for the precious metal purchase 
agreement ("PMPA") with RGLD Gold AG, a subsidiary of Royal Gold Inc. (collectively "Royal Gold"), 
which is accounted for as deferred revenue in accordance with IFRS 15 Revenue from Contracts with 
Customers (“IFRS 15”). As the Company’s obligation under the precious metal purchase agreement 
will be satisfied through deliveries of a non-financial item (i.e. deliveries of gold ounces), rather than 
cash or other financial assets, it was determined to be entered into and continued to be held for the 
purpose of the delivery of a non-financial item in accordance with the Company’s expected sale or 
usage requirements and thus not within the scope of IFRS 9 Financial Instruments (“own use 
exemption”). The determination of whether the own use exemption applies requires management’s 
judgements.
Each period management estimates the cumulative amount of the deferred revenue obligation that 
has been satisfied and, therefore, recognized as revenue. Key inputs into the estimate of the amount of 
deferred revenue that should be recognized include the following:
a.
Future gold prices were used at inception of the contract to estimate the expected total 
consideration to be received under the contract including variable consideration and is used as 
the stand alone selling price to allocate the consideration to each ounce of gold to be delivered 
to Royal Gold, and
b.
Expected life of mine gold production and the timing thereof, which is estimated based on the 
approved life of mine for the NX Gold mine and estimated proven and probable reserves.
Expected credit loss provision
Significant estimates and assumptions are made in determining the expected credit loss provision for 
financial assets that are measured at amortized costs as there are numerous factors that will affect the 
ultimate asset receivable. These factors include exposure at default, the expected recovery, the 
discount rate, and the timing of expected cash flow. 
39
Annual Report | 2024

CAPITAL EXPENDITURES
The following table presents capital expenditures at the Company’s operations on an accrual basis 
and are net of any sales and value-added taxes.
2024
2023
Caraíba Operations
Growth
$ 
74,321 
$ 
148,808 
Sustaining
 
81,998 
 
78,473 
Exploration
 
19,420 
 
30,408 
Deposit on Projects
 
(10,058)  
(8,523) 
Total, Caraíba Operations
$ 
165,681 
$ 
249,166 
Tucumã Project
Growth
 
107,689 
 
189,006 
Sustaining
 
4,125 
 
— 
Capitalized ramp-up costs
 
30,800 
 
— 
Exploration
 
3,973 
 
813 
Deposit on Projects
 
(19,805)  
15,687 
Total, Tucumã Project
$ 
126,782 
$ 
205,506 
Xavantina Operations
Growth
 
6,198 
 
2,944 
Sustaining
 
13,193 
 
16,251 
Exploration
 
5,289 
 
8,546 
Deposit on Projects
 
(55)  
(174) 
Total, Xavantina Operations
$ 
24,625 
$ 
27,567 
Corporate and Other
Sustaining
 
112 
 
933 
Exploration
 
7,725 
 
6,325 
Deposit on Projects
 
10 
 
4 
Total, Corporate and Other
$ 
7,847 
$ 
7,262 
Consolidated
Growth
 
188,208 
 
340,758 
Sustaining
 
99,428 
 
95,657 
Capitalized ramp-up costs
 
30,800 
 
— 
Exploration
 
36,407 
 
46,092 
Deposit on Projects
 
(29,908)  
6,994 
Total, Consolidated Capital Expenditures
$ 
324,935 
$ 
489,501 
40
Annual Report | 2024

2024
2023
Total, Consolidated Capital Expenditures
$ 
324,935 
$ 
489,501 
Add (less):
Additions to exploration and evaluation assets
 
(8,629)  
(13,475) 
Additions to right-of-use assets
 
18,012 
 
20,019 
Capitalized depreciation
 
592 
 
959 
Realized foreign exchange (loss) gain on capital expenditure hedges
 
(2,306)  
— 
Total, additions per Mineral Properties, Plant and Equipment note
$ 
332,604 
$ 
497,004 
ALTERNATIVE PERFORMANCE (NON-IFRS) MEASURES
The Company utilizes certain alternative performance (non-IFRS) measures to monitor its 
performance, including copper C1 cash cost, copper C1 cash cost including foreign exchange hedges, 
realized copper price, gold C1 cash cost, gold AISC, realized gold price, EBITDA, adjusted EBITDA, 
adjusted net income attributable to owners of the Company, adjusted net income per share, net (cash) 
debt, working capital and available liquidity. These performance measures have no standardized 
meaning prescribed within generally accepted accounting principles under IFRS and, therefore, 
amounts presented may not be comparable to similar measures presented by other mining companies. 
These non-IFRS measures are intended to provide supplemental information and should not be 
considered in isolation or as a substitute for measures of performance prepared in accordance with 
IFRS. The tables below provide reconciliations of these non-IFRS measures to the most directly 
comparable IFRS measures as contained in the Company’s financial statements. 
Unless otherwise noted, the non-IFRS measures presented below have been calculated on a 
consistent basis for the periods presented.
Copper C1 Cash Cost and Copper C1 Cash Cost including Foreign Exchange Hedges 
Copper C1 cash cost and copper C1 cash cost including foreign exchange hedges are non-IFRS 
performance measures used by the Company to manage and evaluate the performance of its copper 
mining operations.
Copper C1 cash cost is calculated as C1 cash costs divided by total pounds of copper produced during 
the period. C1 cash costs comprise the total cost of production, including expenses related to 
transportation, and treatment and refining charges. These costs are net of by-product credits, 
incentive payments and certain tax credits associated with sales invoiced to the Company's Brazilian 
customer. 
Copper C1 cash cost including foreign exchange hedges is calculated as C1 cash costs, adjusted for 
realized gains or losses from its operational foreign exchange hedges, divided by total pounds of 
copper produced during the period. Although the Company does not apply hedge accounting in its 
consolidated financial statements and recognizes these contracts at fair value through profit or loss, 
the Company believes it appropriate to present cash costs including the impact of realized gains and 
losses as these contracts were entered into to mitigate the impact of changes in exchange rates.
41
Annual Report | 2024

While copper C1 cash cost is widely reported in the mining industry as a performance benchmark, it 
does not have a standardized meaning and is disclosed as a supplement to IFRS measures. 
The following table provides a reconciliation of copper C1 cash cost to cost of production, its most 
directly comparable IFRS measure. 
Reconciliation:
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Cost of production
$ 
33,685 $ 
40,149 $ 
39,790 $ 158,006 $ 153,187 
Add (less):
Transportation costs & other
 
1,149  
1,283  
1,853  
4,967  
6,539 
Treatment, refining, and other
 
2,934  
3,170  
7,332  
15,332  
28,323 
By-product credits
 
(5,163)  
(6,584)  
(3,394)  
(17,618)  
(12,930) 
Incentive payments
 
1,127  
(1,138)  
(1,693)  
(2,384)  
(5,668) 
Net change in inventory
 
927  
(1,220)  
1,434  
(4,654)  
4,407 
Foreign exchange translation and other
 
168  
3  
20  
185 
 
(149) 
C1 cash costs(1)
 
34,827  
35,663  
45,342  
153,834  
173,709 
(Gain) loss on foreign exchange hedges
 
4,166  
1,965  
(4,185)  
5,901  
(11,417) 
C1 cash costs including foreign 
exchange hedges
$ 
38,993 $ 
37,628 $ 
41,157 $ 159,735 $ 162,292 
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Costs
Mining
$ 
24,906 $ 
26,529 $ 
26,646 $ 104,572 $ 102,908 
Processing
 
6,580  
7,069  
8,177  
28,753  
30,736 
Indirect
 
5,570  
5,479  
6,581  
22,795  
24,672 
Production costs
 
37,056  
39,077  
41,404  
156,120  
158,316 
By-product credits
 
(5,163)  
(6,584)  
(3,394)  
(17,618)  
(12,930) 
Treatment, refining and other
 
2,934  
3,170  
7,332  
15,332  
28,323 
C1 cash costs(1)
 
34,827  
35,663  
45,342  
153,834  
173,709 
(Gain) loss on foreign exchange hedges
 
4,166 $ 
1,965 $ 
(4,185)  
5,901  
(11,417) 
C1 cash costs including foreign 
exchange hedges
$ 
38,993 $ 
37,628 $ 
41,157 $ 159,735 $ 162,292 
(1)  Copper C1 cash costs for 2024 do not include Tucumã Operation's results, as commercial production has not been 
achieved as of December 31, 2024.
42
Annual Report | 2024

2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Costs per pound
Total copper produced (lbs, 000)
 
18,883  
21,871  
25,926  
78,140  
96,688 
Mining
$ 
1.32 $ 
1.22 $ 
1.03 $ 
1.34 $ 
1.06 
Processing
$ 
0.35 $ 
0.32 $ 
0.32 $ 
0.37 $ 
0.32 
Indirect
$ 
0.29 $ 
0.25 $ 
0.25 $ 
0.29 $ 
0.26 
By-product credits
$ 
(0.27) $ 
(0.30) $ 
(0.13) $ 
(0.23) $ 
(0.13) 
Treatment, refining and other
$ 
0.16 $ 
0.14 $ 
0.28 $ 
0.20 $ 
0.29 
Copper C1 cash costs(1)
$ 
1.85 $ 
1.63 $ 
1.75 $ 
1.97 $ 
1.80 
Loss (gain) on foreign exchange hedges
$ 
0.22 $ 
0.09 $ 
(0.16) $ 
0.08 $ 
(0.12) 
Copper C1 cash costs including foreign 
exchange hedges
$ 
2.07 $ 
1.72 $ 
1.59 $ 
2.05 $ 
1.68 
(1)  Copper C1 cash costs for 2024 do not include Tucumã Operation's results, as commercial production has not been 
achieved as of December 31, 2024.
Realized Copper Price 
Realized copper price is a non-IFRS ratio which is calculated as gross copper revenue divided by 
pounds of copper sold during the period. Management believes measuring realized copper price 
enables investors to better understand performance based on realized copper sales in each reporting 
period. 
The following table provides a calculation of realized copper price and a reconciliation to copper 
segment.
Reconciliation:
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Copper revenue(1)
$ 
71,673 $ 
87,305 $ 
83,237 
$ 311,777 $ 320,603 
less: by-product credits
 
(5,163)  
(6,584)  
(3,394)  
(17,618)  
(12,930) 
Net copper revenue
 
66,510  
80,721  
79,843 
 
294,159  
307,673 
add: treatment, refining and other
 
2,934  
3,170  
7,332 
 
15,332  
28,323 
add: royalty taxes
 
1,391  
1,489  
1,501 
 
5,667  
6,049 
Gross copper revenue
 
70,835  
85,380  
88,676 
 
315,158  
342,045 
Total copper sold in concentrate (lbs, 000)
 
18,563  
21,980  
25,197 
 
80,594  
93,906 
Realized copper price(2) 
$ 
3.82 $ 
3.88 $ 
3.52 $ 
3.91 $ 
3.64 
(1)   Copper revenue includes provisional price and volume adjustments 
(2)  Realized Copper Price for 2024 does not include Tucumã Operation's results, as commercial production has not been 
achieved as of December 31, 2024.
43
Annual Report | 2024

Gold C1 Cash Cost and Gold AISC 
Gold C1 cash cost is a non-IFRS performance measure used by the Company to manage and evaluate 
the operating performance of its gold mining segment and is calculated as C1 cash costs divided by 
total ounces of gold produced during the period. C1 cash cost includes total cost of production, net of 
by-product credits and incentive payments. Gold C1 cash cost is widely reported in the mining 
industry as benchmarks for performance but does not have a standardized meaning and is disclosed in 
supplemental to IFRS measures. 
Gold AISC is an extension of gold C1 cash cost discussed above and is also a key performance 
measure used by management to evaluate operating performance of its gold mining segment. Gold 
AISC is calculated as AISC divided by total ounces of gold produced during the period. AISC includes 
C1 cash costs, site general and administrative costs, accretion of mine closure and rehabilitation 
provision, sustaining capital expenditures, sustaining leases, and royalties and production taxes. Gold 
AISC is widely reported in the mining industry as benchmarks for performance but does not have a 
standardized meaning and is disclosed in supplement to IFRS measures.
The following table provides a reconciliation of gold C1 cash cost and gold AISC to cost of production, 
its most directly comparable IFRS measure.
Reconciliation:
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Cost of production
$ 
9,000 $ 
6,220 $ 
7,122 $ 
30,055 $ 
25,209 
Add (less):
Incentive payments
 
(434)  
(378)  
(386)  
(1,481)  
(1,424) 
Net change in inventory
 
(1,914)  
1,378  
65  
(594)  
862 
By-product credits
 
(189)  
(232)  
(248)  
(869)  
(827) 
Smelting and refining
 
62  
79  
113  
328 
 
353 
Foreign exchange translation and other
 
125  
203  
296  
775 
 
806 
C1 cash costs
$ 
6,650 $ 
7,270 $ 
6,962 $ 
28,214 $ 
24,979 
Site general and administrative
 
1,576  
1,321  
1,492  
5,600  
5,366 
Accretion of mine closure and 
rehabilitation provision
 
78  
82  
111  
340 
 
439 
Sustaining capital expenditure
 
4,597  
2,784  
5,499  
13,288  
16,300 
Sustaining lease payments
 
1,681  
1,801  
1,861  
7,512  
7,093 
Royalties and production taxes
 
526  
686  
785  
2,584  
2,487 
AISC
$ 
15,108 $ 
13,944 $ 
16,710 $ 
57,538 $ 
56,664 
44
Annual Report | 2024

2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Costs
Mining
$ 
3,325 
$ 
3,852 $ 
3,430 $ 
14,702 
$ 
12,154 
Processing
 
2,162 
 
2,419  
2,315  
9,117 
 
8,433 
Indirect
 
1,290 
 
1,152  
1,352  
4,936 
 
4,866 
Production costs
 
6,777 
 
7,423  
7,097  
28,755 
 
25,453 
Smelting and refining costs
 
62 
 
79  
113  
328 
 
353 
By-product credits
 
(189)  
(232)  
(248)  
(869)  
(827) 
C1 cash costs
$ 
6,650 
$ 
7,270 $ 
6,962 $ 
28,214 
$ 
24,979 
Site general and administrative
 
1,576 
 
1,321  
1,492  
5,600 
 
5,366 
Accretion of mine closure and 
rehabilitation provision
 
78 
 
82  
111  
340 
 
439 
Sustaining capital expenditure
 
4,597 
 
2,784  
5,499  
13,288 
 
16,300 
Sustaining leases
 
1,681 
 
1,801  
1,861  
7,512 
 
7,093 
Royalties and production taxes
 
526 
 
686  
785  
2,584 
 
2,487 
AISC
$ 
15,108 
$ 
13,944 $ 
16,710 $ 
57,538 
$ 
56,664 
Costs per ounce
Total gold produced (ounces)
 
8,936 
 
13,485  
16,867  
57,210 
 
59,222 
Mining
$ 
372 
$ 
286 $ 
203 $ 
257 
$ 
205 
Processing
$ 
242 
$ 
179 $ 
137 $ 
159 
$ 
142 
Indirect
$ 
144 
$ 
85 $ 
80 $ 
86 
$ 
82 
Smelting and refining
$ 
7 
$ 
6 $ 
7 $ 
6 
$ 
6 
By-product credits
$ 
(21) $ 
(17) $ 
(14) $ 
(15) $ 
(13) 
Gold C1 cash cost
$ 
744 
$ 
539 $ 
413 $ 
493 
$ 
422 
Gold AISC
$ 
1,691 
$ 
1,034 $ 
991 $ 
1,006 
$ 
957 
45
Annual Report | 2024

Realized Gold Price 
Realized gold price is a non-IFRS ratio that is calculated as gross gold revenue divided by ounces of 
gold sold during the period. Management believes measuring realized gold price enables investors to 
better understand performance based on the realized gold sales in each reporting period. The 
following table provides a calculation of realized gold price and a reconciliation to gold segment 
revenues, its most directly comparable IFRS measure.
(in '000s except for ounces and price per ounce)
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
NX Gold revenue 
$ 
22,786 $ 
34,433 
$ 
33,176 
$ 127,303 $ 106,877 
less: by-product credits 
 
(189)  
(232)  
(248)  
(869)  
(827) 
Gold revenue, net 
$ 
22,597 $ 
34,201 $ 
32,928 $ 126,434 $ 106,050 
add: smelting, refining, and other charges
 
507  
619 
 
713 
 
2,492  
2,165 
Gold revenue, gross
$ 
23,104 $ 
34,820 $ 
33,641 $ 128,926 $ 108,215 
Spot (cash)
$ 
21,069 
$ 
25,718 
$ 
28,205 
$ 103,091 
$ 
85,724 
Stream (cash)
$ 
1,788 
$ 
2,047 
$ 
1,613 
$ 
7,525 
$ 
5,409 
Stream (amortization of deferred 
revenue)(1)
$ 
247 
$ 
7,055 
$ 
3,823 
$ 
18,310 
$ 
17,082 
Total gold ounces sold
 
11,106  
14,615  
18,479  
60,195  
57,949 
Spot
 
7,770 
 
10,425 
 
14,332 
 
44,278 
 
43,944 
Stream
 
3,336 
 
4,190 
 
4,147 
 
15,917 
 
14,005 
Realized gold price (per ounce)
$ 
2,080 $ 
2,382 $ 
1,820 $ 
2,142 $ 
1,867 
Spot
$ 
2,712 
$ 
2,467 
$ 
1,968 
$ 
2,328 
$ 
1,951 
Stream (cash + amortization of deferred 
revenue)(1)
$ 
610 
$ 
2,172 
$ 
1,311 
$ 
1,623 
$ 
1,606 
Cash (spot cash + stream cash)
$ 
2,058 
$ 
1,900 
$ 
1,614 
$ 
1,838 
$ 
1,573 
(1) Amortization of deferred revenue during the three months and year ended December 31, 2024 is net of $4.2 million and 
$3.0  million, respectively, (three months and year ended December 31, 2023 - $1.9  million and $2.5  million, 
respectively) related to change in estimate attributed to advances received and change in life-of-mine production 
estimates. 
Earnings before interest, taxes, depreciation, and amortization (“EBITDA”) and Adjusted 
EBITDA
EBITDA and adjusted EBITDA are non-IFRS performance measures used by management to evaluate 
its debt service capacity and performance of its operations. EBITDA represents earnings before 
finance expense, finance income, income taxes, depreciation and amortization. Adjusted EBITDA is 
EBITDA before the pre-tax effect of adjustments for non-cash and/or non-recurring items required in 
determination of EBITDA for covenant calculation purposes.
46
Annual Report | 2024

The following table provides a reconciliation of EBITDA and Adjusted EBITDA to net income, its most 
directly comparable IFRS measure.
Reconciliation:
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Net (Loss) Income
$ (48,928) $ 
41,367 $ 
37,052 $ (67,790) $ 
94,304 
Adjustments:
Finance expense
 
3,851  
4,039  
5,284  
17,089  
25,822 
Finance income
 
(690)  
(781)  
(1,989)  
(4,300)  
(12,465) 
Income tax (recovery) expense
 
(5,862)  
8,331  
8,415  
(7,651)  
18,047 
Amortization and depreciation
 
20,265  
21,555  
24,980  
87,410  
83,024 
EBITDA
$ (31,364) $ 
74,511 $ 
73,742 $ 
24,758 $ 208,732 
Foreign exchange loss (gain)
 
92,804  
(17,246)  
(24,871)  
165,008  
(34,612) 
Share based compensation
 
(7,496)  
4,859  
477  
9,983  
9,218 
Change in rehabilitation and closure 
provision(1)
 
4,609  
—  
—  
4,609  
— 
Write-down of exploration and 
evaluation asset
 
839  
467  
—  
12,051  
— 
Unrealized (gain) loss on commodity 
derivatives
 
(250)  
(360)  
955  
(238)  
115 
Adjusted EBITDA
$ 
59,142 $ 
62,231 $ 
50,303 $ 216,171 $ 183,453 
(1) Change in rehabilitation and closure provision relates to revisions to rehabilitation and closure plans and cost estimates 
at the Company’s historic mining operations that have entered the closure phase, and for which there are no substantive 
future economic value. Such costs are reflected within other expenses on the Company's Consolidated Statements of 
Operations and Comprehensive (Loss) Income.
Adjusted net income attributable to owners of the Company and Adjusted net income per 
share attributable to owners of the Company
“Adjusted net income attributable to owners of the Company” is net income attributed to shareholders 
as reported, adjusted for certain types of transactions that, in management's judgment, are not 
indicative of our normal operating activities or do not necessarily occur on a recurring basis. “Adjusted 
net income per share attributable to owners of the Company” (“Adjusted EPS”) is calculated as 
"adjusted net income attributable to owners of the Company" divided by weighted average number of 
outstanding common shares in the period. The Company believes that, in addition to conventional 
measures prepared in accordance with IFRS, the Company and certain investor and analysts use these 
supplemental non-IFRS performance measures to evaluate the normalized performance of the 
Company. The presentation of Adjusted EPS is not meant to substitute the net income (loss) per share 
attributable to owners of the Company (“EPS”) presented in accordance with IFRS, but rather it should 
be evaluated in conjunction with such IFRS measures.
47
Annual Report | 2024

The following table provides a reconciliation of Adjusted net income attributable to owners of the 
Company and Adjusted EPS to net income attributable to the owners of the Company, its most 
directly comparable IFRS measure.
Reconciliation:
2024 - Q4
2024 - Q3
2023 - Q4
2024
2023
Net (loss) income as reported attributable to 
the owners of the Company
$ 
(48,944) $ 
40,857 
$ 
36,549 
$ 
(68,475) $ 
92,804 
Adjustments:  
Share based compensation
 
(7,496)  
4,859 
 
477 
 
9,983 
 
9,218 
Unrealized foreign exchange loss (gain) on 
USD denominated balances in MCSA
 
66,971 
 
(11,860)  
(10,308)  
114,885 
 
(15,296) 
Unrealized foreign exchange loss (gain) on 
foreign exchange derivative contracts
 
15,182 
 
(9,807)  
(9,852)  
30,685 
 
(7,552) 
Change in rehabilitation and closure 
provision(1)
 
4,591 
 
— 
 
— 
 
4,591 
 
— 
Write-down of exploration and evaluation 
asset
 
836 
 
465 
 
— 
 
12,046 
 
— 
Unrealized (gain) loss on commodity 
derivatives
 
(243)  
(367)  
951 
 
(240)  
115 
Tax effect on the above adjustments
 
(13,459)  
3,431 
 
2,932 
 
(23,060)  
3,472 
Adjusted net income attributable to owners 
of the Company
$ 
17,438 
$ 
27,578 
$ 
20,749 
$ 
80,415 
$ 
82,761 
Weighted average number of common shares
Basic
 103,345,064  103,239,881  98,099,791 
 103,106,305  94,111,548 
Diluted
 103,877,690  103,973,827  98,482,755 
 103,713,563  94,896,334 
Adjusted EPS
Basic
$ 
0.17 
$ 
0.27 
$ 
0.21 
$ 
0.78 
$ 
0.88 
Diluted
$ 
0.17 
$ 
0.27 
$ 
0.21 
$ 
0.78 
$ 
0.87 
(1) Change in rehabilitation and closure provision relates to revisions to rehabilitation and closure plans and cost estimates 
at the Company’s historic mining operations that have entered the closure phase, and for which there are no substantive 
future economic value. Such costs are reflected within other expenses on the Company's Consolidated Statements of 
Operations and Comprehensive (Loss) Income.
Net Debt
Net debt is a performance measure used by the Company to assess its financial position and ability to 
pay down its debt. Net debt is determined based on cash and cash equivalents, short-term 
investments, net of loans and borrowings as reported in the Company’s consolidated financial 
statements. The following table provides a calculation of net (cash) debt based on amounts presented 
in the Company’s consolidated financial statements as at the periods presented.
48
Annual Report | 2024

December 31, 
2024
September 
30, 2024
December 31, 
2023
Current portion of loans and borrowings
$ 
45,893 $ 
39,383 $ 
20,381 
Long-term portion of loans and borrowings
556,296
499,527
405,852
Less: 
Cash and cash equivalents
 
(50,402)  
(20,229)  
(111,738) 
Short-term investments
 
— 
 
—  
— 
Net debt (cash) 
$ 
551,787 $ 
518,681 $ 
314,495 
Working Capital and Available Liquidity
Working capital is calculated as current assets less current liabilities as reported in the Company’s 
consolidated financial statements. The Company uses working capital as a measure of the Company’s 
short-term financial health and ability to meet its current obligations using its current assets. 
Available liquidity is calculated as the sum of cash and cash equivalents, short-term investments and 
the undrawn amount available on its revolving credit facilities. The Company uses this information to 
evaluate the liquid assets available. The following table provides a calculation for these based on 
amounts presented in the Company’s consolidated financial statements as at the periods presented.
December 31, 
2024
September 
30, 2024
December 31, 
2023
Current assets
$ 
141,790 $ 
126,808 $ 
199,487 
Less: Current liabilities
 
(211,706)  
(187,708)  
(173,800) 
Working (deficit) capital
$ 
(69,916) $ 
(60,900) $ 
25,687 
Cash and cash equivalents
 
50,402  
20,229  
111,738 
Available undrawn revolving credit facilities(1)
 
15,000  
80,000  
150,000 
Available undrawn prepayment facilities(2)
 
25,000  
25,000  
— 
Available liquidity
$ 
90,402 $ 
125,229 $ 
261,738 
(1) In January 2025, the Company amended its Senior Credit Facility to increase the limit from $150.0 million to 
$200.0 million and extended the maturity from December 2026 to December 2028. 
(2)  In May 2024, the Company entered into a $50.0 million non-priced copper prepayment facility arrangement. Through 
March 31, 2025, the Company has the option to increase the size of the facility from $50.0 million to $75.0 million.
49
Annual Report | 2024

DISCLOSURE CONTROLS AND PROCEDURES AND INTERNAL CONTROL OVER 
FINANCIAL REPORTING
The Company’s management, with the participation of the CEO and CFO, is responsible for 
establishing and maintaining adequate disclosure controls and procedures (“DC&P”) and internal 
control over financial reporting (“ICFR”) using Internal Control – Integrated Framework (2013) issued 
by the Committee of Sponsoring Organizations of the Treadway Commission ("COSO") as its internal 
control framework. 
The Company’s DC&P are designed to provide reasonable assurance that material information related 
to the Company is identified and communicated on a timely basis. 
The Company’s ICFR is a process designed to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance 
with IFRS. Any system of ICFR, no matter how well designed, has inherent limitations and cannot 
provide absolute assurance that all misstatements and instances of fraud, if any, within the Company 
have been prevented or detected. The Company’s ICFR is designed to provide reasonable assurance 
regarding the reliability of financial reporting and the preparation of financial statements for external 
purposes in accordance with IFRS. 
As required by National Instrument 52-109, Certification of Disclosure in Issuers' Annual and Interim 
Filings, the Company’s management, including the CEO and CFO, has evaluated the design and 
operating effectiveness of the Company’s DC&P and ICFR and concluded that the Company’s DC&P 
and ICFR were effective as of December 31, 2024.
There were no changes in the Company’s DC&P and ICFR that materially affected, or are reasonably 
likely to materially affect, ICFR during the year ended December 31, 2024.
NOTE REGARDING SCIENTIFIC AND TECHNICAL INFORMATION 
Unless otherwise indicated, scientific and technical information in this MD&A relating to Ero’s 
properties (“Technical Information”) is based on information contained in the following:
The report prepared in accordance with National Instrument 43-101, Standards of Disclosure for 
Mineral Projects (“NI 43-101”) and entitled “2022 Mineral Resources and Mineral Reserves of the 
Caraíba Operations, Curaçá Valley, Bahia, Brazil”, dated December 22, 2022 with an effective date of 
September 30, 2022, prepared by Porfirio Cabaleiro Rodriguez, FAIG, Bernardo Horta de Cerqueira 
Viana, FAIG, Fábio Valério Câmara Xavier, MAIG and Ednie Rafael Moreira de Carvalho Fernandes, 
MAIG all of GE21 Consultoria Mineral Ltda. (“GE21”), Dr. Beck Nader, FAIG of BNA Mining Solutions 
(“BNA”) and Alejandro Sepulveda, Registered Member (#0293) (Chilean Mining Commission) of NCL 
Ingeniería y Construcción SpA (“NCL”) (the “Caraíba Operations Technical Report”). Each a “qualified 
person” and “independent” of the Company within the meanings of NI 43-101.
The report prepared in accordance with NI 43-101 and entitled “Mineral Resource and Mineral 
Reserve Estimate of the Xavantina Operations, Nova Xavantina”, dated May 12, 2023 with an effective 
date of October 31, 2022, prepared by Porfirio Cabaleiro Rodriguez, FAIG, Leonardo de Moraes 
Soares, MAIG and Guilherme Gomides Ferreira, MAIG, all of GE21 (the “Xavantina Operations 
Technical Report”). Each a “qualified person” and “independent” of the Company within the meanings 
of NI 43-101.
50
Annual Report | 2024

The report prepared in accordance with NI 43-101 and entitled “Boa Esperança Project NI 43-101 
Technical Report on Feasibility Study Update”, dated November 12, 2021 with an effective date of 
August 31, 2021, prepared by Kevin Murray, P. Eng., Erin L. Patterson, P.E. and Scott C. Elfen, P.E. all 
of Ausenco Engineering Canada Inc. (or its affiliate Ausenco Engineering USA South Inc. in the case of 
Ms. Patterson), Carlos Guzmán, FAusIMM RM CMC of NCL and Emerson Ricardo Re, MSc, MBA, 
MAusIMM (CP) (No. 305892), Registered Member (No. 0138) (Chilean Mining Commission) and 
Resource Manager of the Company on the date of the report (now of HCM Consultoria Geologica Eireli 
(“HCM”)) (the “Tucumã Project Technical Report”). Each of Kevin Murray, P. Eng., Erin L. Patterson, P.E. 
and Scott C. Elfen, P.E., Carlos Guzmán, FAusIMM RM CMC and Emerson Ricardo Re, MAusIMM (CP), 
is a “qualified person” of the Company within the meanings of NI 43-101. Each of Kevin Murray, P. 
Eng., Erin L. Patterson, P.E. and Scott C. Elfen, P.E., and Carlos Guzmán, FAusIMM RM CMC are 
“independent” of the Company within the meaning of NI 43-101. Emerson Ricardo Re, MAusIMM (CP), 
as Resource Manager of the Company (on the date of the report and now of HCM), was not 
“independent” of the Company on the date of the report, within the meaning of NI 43-101.
Reference should be made to the full text of the Caraíba Operations Technical Report, the Xavantina 
Operations Technical Report and the Tucumã Project Technical Report, each of which is available for 
review on the Company's website at www.erocopper.com and under the Company’s profile on 
SEDAR+ at www.sedarplus.ca, and EDGAR at www.sec.gov.
The disclosure of Technical Information in this MD&A has been reviewed and approved by Cid 
Gonçalves Monteiro Filho, SME RM (04317974), MAIG (No. 8444), FAusIMM (No. 329148) and 
Resource Manager of the Company who is a “qualified person” within the meanings of NI 43-101.
Cautionary Note Regarding Forward-Looking Statements 
This MD&A 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 Company’s production, operating 
cost and capital expenditure guidance; targeting additional mineral resources and expansion of 
deposits; capital and operating cost estimates and economic analyses (including cash flow 
projections), including those from the Caraíba Operations Technical Report, the Xavantina Operations 
Technical Report and the Tucumã Project Technical Report; the Company’s expectations, strategies 
and plans for the Caraíba Operations, the Xavantina Operations and the Tucumã Project, including the 
Company’s planned exploration, development, construction and production activities; the Company's 
plans for the Furnas Project; the results of future exploration and drilling; estimated completion dates 
for certain milestones; successfully adding or upgrading mineral resources and successfully 
developing new deposits; the costs and timing of future exploration, development and construction 
including but not limited to the Deepening Extension Project at the Caraíba Operations and the 
duration of the ramp-up process and timing of commercial production at the Tucumã Operation; the 
timing and amount of future production at the Caraíba Operations, the Xavantina Operations and the 
Tucumã Operation; expectations regarding the Company's ability to manage risks related to future 
copper price fluctuations and volatility; future financial or operating performance and condition of the 
Company and its business, operations and properties, including expectations regarding liquidity, 
capital structure, competitive position and payment of dividends; expectations regarding future 
51
Annual Report | 2024

currency exchange rates; expected concentrate treatment and refining charges; gold by-product 
credits and USD to BRL exchange rate; and any other statement that may predict, forecast, indicate or 
imply future plans, intentions, levels of activity, results, performance or achievements.
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 MD&A and in the AIF under the heading “Risk Factors”. The 
risks discussed in this MD&A and in the AIF are not exhaustive of the factors that may affect any of the 
Company’s forward-looking statements. Although the Company has attempted to identify important 
factors that could cause actual results, actions, events, conditions, performance or achievements to 
differ materially from those contained in forward-looking statements, there may be other factors that 
cause results, actions, events, conditions, performance or achievements to differ from those 
anticipated, estimated or intended.
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 involve 
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. In connection with the forward-looking statements 
contained in this MD&A and in the AIF, the Company has made certain assumptions about, among 
other things: 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’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 Caraíba Operations, the Xavantina Operations and the Tucumã 
Operation being as described in the respective technical report for each property; production costs; the 
accuracy of budgeted exploration, development and construction costs and expenditures; the price of 
other commodities such as fuel; future currency exchange rates, interest rates and tariff rates; 
operating conditions being favourable such that the Company is able to operate in a safe, efficient and 
effective manner; work force continuing 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; positive relations with local groups and the Company’s ability to meet its obligations 
under its agreements with such groups; and satisfying the terms and conditions of the Company’s 
current loan arrangements. Although the Company believes that the assumptions inherent in forward-
looking statements are reasonable as of the date of this MD&A, these assumptions are 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. The Company cautions that the foregoing list of assumptions is not exhaustive. 
52
Annual Report | 2024

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 in this MD&A.
Forward-looking statements contained herein are made as of the date of this MD&A 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.
Cautionary Notes Regarding Mineral Resource and Reserve Estimates 
Unless otherwise indicated, all reserve and resource estimates included in this MD&A and the 
documents incorporated by reference herein have been prepared in accordance with Canadian 
NI  43-101 and the Canadian Institute of Mining, Metallurgy and Petroleum (the “CIM”) — CIM 
Definition Standards on Mineral Resources and Mineral Reserves, adopted by the CIM Council, as 
amended (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. Canadian standards, including NI 43-101, differ 
significantly from the requirements of the United States Securities and Exchange Commission (the 
“SEC”), and reserve and resource information included herein may not be comparable to similar 
information disclosed by U.S. companies. In particular, and without limiting the generality of the 
foregoing, this MD&A and the documents incorporated by reference herein use the terms “measured 
resources,” “indicated resources” and “inferred resources” as defined in accordance with NI 43-101 
and the CIM Standards. 
Further to recent amendments, mineral property disclosure requirements in the United States (the 
“U.S. Rules”) are governed by subpart 1300 of Regulation S-K of the U.S. Securities Act of 1933, as 
amended (the “U.S. Securities Act”) which differ from the CIM Standards. As a foreign private issuer 
that is eligible to file reports with the SEC pursuant to the multi-jurisdictional disclosure system (the 
“MJDS”), Ero is not required to provide disclosure on its mineral properties under the U.S. Rules and 
will continue to provide disclosure under NI 43-101 and the CIM Standards. If Ero ceases to be a 
foreign private issuer or loses its eligibility to file its annual report on Form 40-F pursuant to the MJDS, 
then Ero will be subject to the U.S. Rules, which differ from the requirements of NI 43-101 and the 
CIM Standards. 
Pursuant to the new U.S. Rules, the SEC recognizes estimates of “measured mineral resources”, 
“indicated mineral resources” and “inferred mineral resources.” In addition, the definitions of “proven 
mineral reserves” and “probable mineral reserves” under the U.S. Rules are now “substantially 
similar” to the corresponding standards under NI 43-101. Mineralization described using these terms 
has a greater amount of uncertainty as to its existence and feasibility than mineralization that has 
been characterized as reserves. Accordingly, U.S. investors are cautioned not to assume that any 
measured mineral resources, indicated mineral resources, or inferred mineral resources that Ero 
reports are or will be economically or legally mineable. Further, “inferred mineral resources” have a 
greater amount of uncertainty as to their existence and as to whether they can be mined legally or 
economically. Under Canadian securities laws, estimates of “inferred mineral resources” may not form 
the basis of feasibility or pre-feasibility studies, except in rare cases. While the above terms under the 
U.S. Rules are “substantially similar” to the standards under NI 43-101 and CIM Standards, there are 
differences in the definitions under the U.S. Rules and CIM Standards. Accordingly, there is no 
assurance any mineral reserves or mineral resources that Ero may report as “proven mineral reserves”, 
“probable mineral reserves”, “measured mineral resources”, “indicated mineral resources” and 
“inferred mineral resources” under NI 43-101 would be the same had Ero prepared the reserve or 
resource estimates under the standards adopted under the U.S. Rules.
ADDITIONAL INFORMATION 
Additional information about Ero and its business activities, including the AIF, is available under the 
Company’s profile at www.sedarplus.ca and www.sec.gov. 
53
Annual Report | 2024

Consolidated
Financial 
Statements
For the Years Ended December 31, 2024 and 2023

Report of Independent Registered Public Accounting Firm
To the Shareholders and Board of Directors 
Ero Copper Corp.
Opinion on the Consolidated Financial Statements
We have audited the accompanying consolidated statements of financial position of Ero Copper Corp. and 
subsidiaries (the Company) as of December 31, 2024 and 2023, the related consolidated statements of 
operations and comprehensive (loss) income, cash flow and changes in shareholders’ equity for each of the 
years in the two-year period ended December 31, 2024, and the related notes (collectively, the consolidated 
financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, 
the financial position of the Company as of December 31, 2024 and 2023, and its financial performance and its 
cash flows for each of the years in the two-year period ended December 31, 2024, in conformity with 
International Financial Reporting Standards as issued by the International Accounting Standards Board.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board 
(United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2024, 
based on the criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of 
Sponsoring Organizations of the Treadway Commission, and our report dated March 6, 2025 expressed an 
unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.
Basis for Opinion
These consolidated financial statements are the responsibility of the Company’s management. Our responsibility 
is to express an opinion on these consolidated financial statements based on our audits. We are a public 
accounting firm registered with the PCAOB and are required to be independent with respect to the Company in 
accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and 
Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan 
and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are 
free of material misstatement, whether due to error or fraud. Our audits included performing procedures to 
assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, 
and performing procedures that respond to those risks. Such procedures included examining, on a test basis, 
evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also 
included evaluating the accounting principles used and significant estimates made by management, as well as 
evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide 
a reasonable basis for our opinion.
Critical Audit Matter
The critical audit matter communicated below is a matter arising from the current period audit of the 
consolidated financial statements that was communicated or required to be communicated to the audit 
committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial 
statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of 
a critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a 
whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the 
critical audit matter or on the accounts or disclosures to which it relates.
55
Annual Report | 2024

Assessment of recognition of uncertainties over income tax treatments in Brazil
As discussed in note 3(c) to the consolidated financial statements, uncertainties over income tax treatments are 
evaluated on the basis of whether it is probable that they will be accepted upon examination by the relevant 
taxing authorities including Brazil.  These uncertainties impact the amount of income taxes recognized. As 
discussed in notes 2(d), the Company operates in Brazil where tax authorities may audit income tax treatments 
and the resolution of such audits may span multiple years. Tax law in Brazil is complex and often subject to 
changes and to varied interpretations; accordingly, the ultimate outcome with respect to income tax treatments 
may differ from the amounts recognized. 
We identified the assessment of recognition of uncertainties over income tax treatments in Brazil as a critical 
audit matter. A high degree of subjective auditor judgment and specialized skills and knowledge was required in 
assessing the Company’s judgments and estimates relating to interpretation and application of income tax law 
that were used to determine these uncertain tax positions.
The following are the primary procedures we performed to address this critical audit matter. We evaluated the 
design and tested the operating effectiveness of an internal control related to the Company’s process to assess 
uncertain tax positions. We involved tax professionals with specialized skills and knowledge who assisted in 
evaluating the Company’s application of tax law and assessing its uncertain tax positions by inspecting 
internally and externally prepared documentation, including correspondence with the Brazilian tax authorities 
and third-party legal and tax advice received by the Company.
/s/ KPMG LLP
Chartered Professional Accountants
We have served as the Company’s auditor since 2017.
Vancouver, Canada 
March 6, 2025
56
Annual Report | 2024

Report of Independent Registered Public Accounting Firm
To the Shareholders and Board of Directors 
Ero Copper Corp.
Opinion on Internal Control Over Financial Reporting 
We have audited Ero Copper Corp. and subsidiaries’ (the Company) internal control over financial reporting as of 
December 31, 2024, based on criteria established in Internal Control – Integrated Framework (2013) issued by 
the Committee of Sponsoring Organizations of the Treadway Commission. In our opinion, the Company 
maintained, in all material respects, effective internal control over financial reporting as of December 31, 2024, 
based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of 
Sponsoring Organizations of the Treadway Commission.  
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board 
(United States) (PCAOB), the consolidated statements of financial position of the Company as of December 31, 
2024 and 2023, the related consolidated statements of operations and comprehensive (loss) income, cash flow 
and changes in shareholders’ equity, for each of the years in the two-year period ended December 31, 2024, and 
the related notes (collectively, the consolidated financial statements), and our report dated March 6, 2025 
expressed an unqualified opinion on those consolidated financial statements.
Basis for Opinion 
The Company’s management is responsible for maintaining effective internal control over financial reporting and 
for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying 
Management’s Discussion Analysis under the heading “Disclosure Controls and Procedures and Internal Control 
over Financial Reporting”. Our responsibility is to express an opinion on the Company’s internal control over 
financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are 
required to be independent with respect to the Company in accordance with the U.S. federal securities laws and 
the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan 
and perform the audit to obtain reasonable assurance about whether effective internal control over financial 
reporting was maintained in all material respects. Our audit of internal control over financial reporting included 
obtaining an understanding of internal control over financial reporting, assessing the risk that a material 
weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on 
the assessed risk. Our audit also included performing such other procedures as we considered necessary in the 
circumstances. We believe that our audit provides a reasonable basis for our opinion.
Definition and Limitations of Internal Control Over Financial Reporting 
A company’s internal control over financial reporting is a process designed to provide reasonable assurance 
regarding the reliability of financial reporting and the preparation of financial statements for external purposes 
in accordance with generally accepted accounting principles. A company’s internal control over financial 
reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in 
reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) 
provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial 
statements in accordance with generally accepted accounting principles, and that receipts and expenditures of 
the company are being made only in accordance with authorizations of management and directors of the 
company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized 
acquisition, use, or disposition of the company’s assets that could have a material effect on the financial 
statements.
57
Annual Report | 2024

Because of its inherent limitations, internal control over financial reporting may not prevent or detect 
misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that 
controls may become inadequate because of changes in conditions, or that the degree of compliance with the 
policies or procedures may deteriorate.
/s/ KPMG LLP
Chartered Professional Accountants
Vancouver, Canada 
March 6, 2025
58
Annual Report | 2024

59
Annual Report | 2024

Table of 
Contents
CONSOLIDATED FINANCIAL STATEMENTS
Consolidated Statements of Financial Position
62
Consolidated Statements of Operations 
and Comprehensive (Loss) Income
63
Consolidated Statements of Cash Flow
64
Consolidated Statements of Changes in Shareholders' Equity
65
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
General
Note 1. Nature of Operations
66
Note 2. Basis of Preparation
66
Note 3. Material Accounting Policies
71
Note 4. Segment Disclosure
79
Statements of Financial Position
Note 5. Inventories
82
Note 6. Other Current Assets
82
Note 7. Mineral Properties, Plant and Equipment
83
Note 8. Exploration and Evaluation Assets
84
Note 9. Deposits and Other Non-current Assets
84
Note 10. Accounts Payable and Accrued Liabilities
85
Note 11. Loans and Borrowings
85
Note 12. Deferred Revenue
88
60
Annual Report | 2024

Note 13. Provision for rehabilitation and closure costs
89
Note 14. Other Non-current Liabilities
89
Note 15. Share Capital
90
Statements of Earnings
Note 16. Revenue
94
Note 17. Cost of Sales
95
Note 18. General and Administrative Expenses
95
Note 19. Finance Expense
96
Note 20. Foreign Exchange (Loss) Gain
96
Note 21. Income Taxes
97
Other Items
Note 22. Related Party Transactions
99
Note 23. Financial Instruments
99
Note 24. Capital Management 
102
Note 25. Supplemental Cash Flow Information
103
Note 26. Commitment and Contingencies
103
Note 27. Subsequent Events
104
61
Annual Report | 2024

62
Annual Report | 2024
Notes
December 31, 2024
December 31, 2023
ASSETS
Current
Cash and cash equivalents
$ 
50,402 
$ 
111,738 
Accounts receivable
 
18,399 
 
5,710 
Inventories
5
 
42,094 
 
42,254 
Income tax receivable 
 
2,284 
 
500 
Other current assets
6
 
28,611 
 
39,285 
 
141,790 
 
199,487 
Non-Current
Mineral properties, plant and equipment
7
 
1,258,494 
 
1,251,998 
Exploration and evaluation assets
8
 
11,352 
 
29,936 
Deferred income tax assets
21
 
16,659 
 
1,315 
Deposits and other non-current assets
9
 
29,733 
 
28,952 
 
1,316,238 
 
1,312,201 
Total Assets
$ 
1,458,028 
$ 
1,511,688 
LIABILITIES
Current
Accounts payable and accrued liabilities
10
$ 
101,886 
$ 
120,704 
Current portion of loans and borrowings
11
 
45,893 
 
20,381 
Current portion of deferred revenue
12
 
31,712 
 
17,159 
Income taxes payable
 
3,330 
 
3,997 
Current portion of derivatives
23
 
17,980 
 
563 
Current portion of lease liabilities
 
10,905 
 
10,996 
 
211,706 
 
173,800 
Non-Current
Loans and borrowings
11
 
556,296 
 
405,852 
Deferred revenue
12
 
48,231 
 
58,390 
Provision for rehabilitation and closure costs
13
 
21,891 
 
26,687 
Deferred income tax liabilities
21
 
— 
 
10,863 
Lease liabilities
 
6,980 
 
8,607 
Other non-current liabilities
14
 
21,850 
 
18,158 
 
655,248 
 
528,557 
Total Liabilities
 
866,954 
 
702,357 
SHAREHOLDERS’ EQUITY
Share capital
15
 
286,548 
 
271,336 
Equity reserves
 
(180,472)  
(16,616) 
Retained earnings
 
481,055 
 
549,530 
Equity attributable to owners of the Company
 
587,131 
 
804,250 
Non-controlling interests
 
3,943 
 
5,081 
 
591,074 
 
809,331 
Total Liabilities and Equity
$ 
1,458,028 
$ 
1,511,688 
Commitments (Notes 8, 12 and 26); Contingencies (Note 26); Subsequent Events (Note 27)
APPROVED ON BEHALF OF THE BOARD:
"Makko DeFilippo"
, President, CEO and Director
"Jill Angevine"
, Director
Ero Copper Corp.
Consolidated Statements of Financial Position
(Amounts in thousands of US Dollars)
The accompanying notes are an integral part of these consolidated financial statements  
 
    
    Page 1

63
Annual Report | 2024
Year ended December 31,
Notes
2024
2023
Revenue
16
$ 
470,259 
$ 
427,480 
Cost of sales
17
 
(289,706)  
(270,635) 
Gross profit
 
180,553 
 
156,845 
Expenses
General and administrative
18
 
(49,598)  
(52,429) 
Share-based compensation
15 (e)
 
(9,983)  
(9,218) 
Write-down of exploration and evaluation asset
8
 
(12,051)  
— 
Income before the undernoted
 
108,921 
 
95,198 
Finance income
 
4,300 
 
12,465 
Finance expense
19
 
(17,089)  
(25,822) 
Foreign exchange (loss) gain
20
 
(165,008)  
34,612 
Other expenses
 
(6,565)  
(4,102) 
(Loss) earnings before income taxes
 
(75,441)  
112,351 
Current income tax expense
 
(17,662)  
(15,992) 
Deferred income tax recovery (expense)
 
25,313 
 
(2,055) 
Income tax recovery (expense)
21
 
7,651 
 
(18,047) 
Net (loss) income for the year
$ 
(67,790) $ 
94,304 
Other comprehensive (loss) gain
Foreign currency translation (loss) gain
 
(165,027)  
52,656 
Comprehensive (loss) income
$ 
(232,817) $ 
146,960 
Net (loss) income attributable to:
Owners of the Company
 
(68,475)  
92,804 
Non-controlling interests
 
685 
 
1,500 
$ 
(67,790) $ 
94,304 
Comprehensive (loss) income attributable to:
Owners of the Company
 
(232,015)  
145,065 
Non-controlling interests
 
(802)  
1,895 
$ 
(232,817) $ 
146,960 
Net (loss) income per share attributable to owners of the Company
Basic
15 (f)
$ 
(0.66) $ 
0.99 
Diluted
15 (f)
$ 
(0.66) $ 
0.98 
Weighted average number of common shares outstanding
Basic
15 (f)
 
103,106,305 
 
94,111,548 
Diluted
15 (f)
 
103,106,305 
 
94,896,334 
Ero Copper Corp.
Consolidated Statements of Operations and Comprehensive (Loss) Income
(Amounts in thousands of US Dollars, except share and per share amounts)
The accompanying notes are an integral part of these consolidated financial statements  
 
    
    Page 2

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Annual Report | 2024
Year ended December 31,
Notes
2024
2023
Cash Flows from Operating Activities
Net (loss) income for the year
$ 
(67,790) $ 
94,304 
Adjustments for:
Amortization and depreciation
 
87,410 
 
83,024 
Income tax (recovery) expense
 
(7,651)  
18,047 
Amortization of deferred revenue
16
 
(18,310)  
(17,082) 
Share-based compensation
15 (e)
 
9,983 
 
9,218 
Finance income
 
(4,300)  
(12,465) 
Finance expenses
19
 
17,089 
 
25,822 
Foreign exchange loss (gain)
 
159,210 
 
(36,798) 
Write-down of exploration and evaluation asset
 
12,051 
 
— 
Other
 
8,318 
 
4,236 
Changes in non-cash working capital items
25
 
(25,690)  
(5,932) 
 
170,320 
 
162,374 
Derivative contract settlements
 
(10,833)  
9,632 
Provision settlements
 
(5,870)  
(3,344) 
Income taxes paid
 
(8,198)  
(5,563) 
 
145,419 
 
163,099 
Cash Flows used in Investing Activities
Additions to mineral properties, plant and equipment
 
(328,957)  
(447,174) 
Additions to exploration and evaluation assets
 
(8,629)  
(13,475) 
Proceeds from short-term investments and interest received
 
2,202 
 
192,483 
Purchase of short-term investments
 
— 
 
(40,000) 
 
(335,384)  
(308,166) 
Cash Flows used in Financing Activities
Proceeds from equity offering, net of share issue costs
15
 
— 
 
104,330 
Lease liability payments
 
(14,216)  
(11,877) 
New loans and borrowings, net of transaction costs
11
 
213,268 
 
14,889 
Loans and borrowings repaid
11
 
(39,950)  
(7,786) 
Interest paid on loans and borrowings
11
 
(32,166)  
(27,461) 
Other finance expenses paid
 
(4,135)  
(5,502) 
Proceeds from exercise of stock options
 
8,358 
 
11,158 
 
131,159 
 
77,751 
Effect of exchange rate changes on cash and cash equivalents
 
(2,530)  
1,352 
Net decrease in cash and cash equivalents
 
(61,336)  
(65,964) 
Cash and cash equivalents - beginning of year
 
111,738 
 
177,702 
Cash and cash equivalents - end of year
$ 
50,402 
$ 
111,738 
Supplemental cash flow information (note 25)
Ero Copper Corp.
Consolidated Statements of Cash Flow
(Amounts in thousands of US Dollars)
The accompanying notes are an integral part of these consolidated financial statements 
  
 
     Page 3

65
Annual Report | 2024
Ero Copper Corp.
Consolidated Statements of Changes in Shareholders' Equity
(Amounts in thousands of US Dollars, except share and per share amounts)
 
Share Capital
Equity Reserves
Notes
Number of
shares
Amount
Contributed 
Surplus
Foreign
Exchange 
Retained
Earnings
Total
Non-
controlling
interest
Total equity
Balance, December 31, 2022
 92,182,633 
$ 148,055 
$ 
11,185 
$ (77,374) $ 456,726 
$ 538,592 
$ 
3,573 
$ 
542,165 
Income for the year
 
— 
 
— 
 
— 
 
— 
 
92,804 
 
92,804 
 
1,500 
 
94,304 
Other comprehensive income for the year
 
— 
 
— 
 
— 
 
52,261 
 
— 
 
52,261 
 
395 
 
52,656 
Total comprehensive income for the year
 
— 
 
— 
 
— 
 
52,261 
 
92,804 
 
145,065 
 
1,895 
 
146,960 
Shares issued for:
Equity financing, net
 
9,010,000 
 
104,330 
 
— 
 
— 
 
— 
 
104,330 
 
— 
 
104,330 
Exercise of options
 
1,333,199 
 
15,882 
 
(4,724)  
— 
 
— 
 
11,158 
 
— 
 
11,158 
Settlement of restricted share units
 
61,651 
 
868 
 
(1,344)  
— 
 
— 
 
(476)  
— 
 
(476) 
Settlement of performance share units
 
160,075 
 
2,201 
 
— 
 
— 
 
— 
 
2,201 
 
— 
 
2,201 
Share-based compensation
15 (e)
 
— 
 
— 
 
3,380 
 
— 
 
— 
 
3,380 
 
— 
 
3,380 
Dividends to non-controlling interest
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
(387)  
(387) 
Balance, December 31, 2023
 102,747,558 
$ 271,336 
$ 
8,497 
$ (25,113) $ 549,530 
$ 804,250 
$ 
5,081 
$ 
809,331 
Income (loss) for the year
 
— 
 
— 
 
— 
 
— 
 
(68,475)  
(68,475)  
685 
 
(67,790) 
Other comprehensive loss for the year
 
— 
 
— 
 
— 
 (163,540)  
— 
 (163,540)  
(1,487)  
(165,027) 
Total comprehensive loss for the year
 
— 
 
— 
 
— 
 (163,540)  
(68,475)  (232,015)  
(802)  
(232,817) 
Shares issued for:
Exercise of options
 
551,818 
 
11,606 
 
(3,248)  
— 
 
— 
 
8,358 
 
— 
 
8,358 
Settlement of restricted share units
 
101,655 
 
1,492 
 
(2,398)  
— 
 
— 
 
(906)  
— 
 
(906) 
Settlement of performance share units
 
154,180 
 
2,114 
 
— 
 
— 
 
— 
 
2,114 
 
— 
 
2,114 
Share-based compensation
15 (e)
 
— 
 
— 
 
5,330 
 
— 
 
— 
 
5,330 
 
— 
 
5,330 
Dividends to non-controlling interest
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
(336)  
(336) 
Balance, December 31, 2024
 103,555,211 
$ 286,548 
$ 
8,181 
$ (188,653) $ 481,055 
$ 587,131 
$ 
3,943 
$ 
591,074 
The accompanying notes are an integral part of these consolidated financial statements 
 
 
 
 
    
 
 
Page 4

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Annual Report | 2024
1.
Nature of Operations 
Ero Copper Corp. (“Ero" or the "Company") was incorporated on May 16, 2016 under the Business Corporations 
Act (British Columbia) and maintains its head office at Suite 1050, 625 Howe Street, Vancouver, British 
Columbia, Canada, V6C 2T6. The Company’s shares are publicly traded on the Toronto Stock Exchange and the 
New York Stock Exchange under the symbol “ERO”.
The Company’s primary asset is its 99.6% ownership interest in Mineração Caraíba S.A. (“MCSA”), held 
indirectly through its wholly-owned subsidiary, Ero Brasil Participaçoes Ltda. The Company also currently owns 
a 97.6% ownership interest in NX Gold S.A. (“NX Gold”) indirectly through its wholly-owned subsidiary, Ero 
Gold Corp. (“Ero Gold”).  
MCSA is a Brazilian copper company which holds a 100% interest in the Caraíba Operations, located in the 
State of Bahia, and the Tucumã Operation, located in the southeastern part of the State of Pará. MCSA’s 
predominant activity is the production and sale of copper concentrates, with gold and silver produced and sold 
as by-products. 
NX Gold is a Brazilian gold mining company which holds a 100% interest in the Xavantina Operations and is 
focused on the production and sale of gold as its main product and silver as its by-product. The Xavantina 
Operations are located approximately 18 kilometers west of the town of Nova Xavantina, in southeastern State 
of Mato Grosso, Brazil.    
2.
Basis of Preparation
(a)  Statement of Compliance
These consolidated financial statements have been prepared in accordance with International Financial 
Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and 
interpretations of the International Financial Reporting Interpretations Committee.
These consolidated financial statements were authorized for issue by the Board of Directors of the Company 
(the “Board”) on March 6, 2025.
(b)  Basis of Presentation and Principles of Consolidation
These consolidated financial statements have been prepared on a historical cost basis except for derivative 
financial instruments, which are measured at fair value through profit or loss. 
These consolidated financial statements include the accounts of the Company and its subsidiaries. 
Subsidiaries are entities controlled by the Company. Control over a subsidiary is defined to exist when the 
Company is exposed to variable returns from involvement with an investee and has the ability to affect the 
returns through power over the investee. All intercompany balances and transactions are eliminated upon 
consolidation.  
Since the Company does not own 100% of its interests in MCSA and NX Gold, the interest attributable to 
non-controlling shareholders is reflected in non-controlling interests. Adjustments to non-controlling 
interests that do not involve the loss of control are accounted for as equity transactions and adjustments are 
based on a proportionate amount of the net assets of the subsidiary. 
Ero Copper Corp.
Consolidated Statements of Changes in Shareholders' Equity
(Amounts in thousands of US Dollars, except share and per share amounts)
The accompanying notes are an integral part of these consolidated financial statements 
 
 
 
 
    
 
 

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Annual Report | 2024
(c)   Foreign Currency Translation
The functional currency and presentation currency of the Company is the US dollar. The monetary assets 
and liabilities of the Company that are denominated in foreign currencies are translated at the rate of 
exchange at the statement of financial position date while non-monetary assets and liabilities are translated 
at historical rates. Revenues and expenses are translated at the exchange rates approximating those in 
effect on the date of the transactions. Exchange gains and losses arising on translation are included in profit 
or loss.  
The functional currency of all of the Company's Brazilian subsidiaries is the Brazilian Real (“BRL”). The 
assets and liabilities of its Brazilian subsidiaries are translated into the US dollar presentation currency using 
the exchange rate at the statement of financial position date while revenues and expenses are translated at 
the exchange rates approximating those in effect on the date of the transactions. Exchange gains and losses 
arising on translation are included in a separate component of shareholders’ equity.
(d)   Use of Estimates and Judgments 
In preparing these financial statements, management has made judgments, estimates and assumptions that 
affect the application of the Company’s accounting policies and the reported amounts of the assets, 
liabilities, revenues and expenses.  
The estimates and assumptions are reviewed on an ongoing basis. Revisions to estimates are recognized 
prospectively.
Critical Judgments 
Functional currency
The functional currency of the Company and each of its subsidiaries is the currency of the primary economic 
environment in which the entities operate.  The Company has determined that the functional currency for the 
Company is the US dollar while the functional currency for all of its Brazilian subsidiaries is the BRL. 
Assessment of functional currency involves certain judgments to determine the primary economic 
environment and the Company reconsiders the functional currency of its entities if there is a change in 
events and conditions which determined the primary economic environment.
Legal claims and contingent liabilities
The recognition of legal provisions and contingent liabilities involves the assessment of claims made against 
the Company and each of its subsidiaries.  The recognition of a legal provision, or disclosure of a contingent 
liability, involves certain judgments to determine the probability of whether a cash outflow will occur.  In 
making this judgment, management has assessed various criteria and also relies on the opinions of its legal 
advisers to assist in making this assessment.
Commencement of Commercial Production
Determining when a mine under construction is substantially complete and ready for its intended use 
requires significant judgement. The criteria the Company used to make that determination for the  Tucumã 
Operation included, amongst other things:
•
the ability of the mine to produce salable product (i.e. the ability to produce metal within 
specifications),
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

68
Annual Report | 2024
•
throughput of the processing plant reach a predefined percentage of design capacity over a 
reasonable period,
•
processing plant recoveries reaching a pre-defined percentage of expected recoveries. 
After evaluating the above factors, the Company concluded that the Tucumã Operation had not achieved 
commercial production as of December 31, 2024, and therefore, is not yet ready for its intended use.
Key Sources of Estimation Uncertainty 
The preparation of financial statements in conformity with IFRS requires management to make estimates 
and assumptions that affect the reported amounts of assets and liabilities and the disclosure of assets and 
liabilities at the date of the consolidated financial statements and the reported amounts of expenses during 
the reporting periods. Actual results could differ from those estimates and such differences could be 
significant. Significant estimates made by management affecting the consolidated financial statements 
include: 
Derivative instruments
The fair value of derivative instruments is determined using either present value techniques or option pricing 
models that utilize a variety of inputs that are a combination of quoted prices and market-corroborated 
inputs, including assumptions for forward interest and foreign exchange rates, volatilities and discount rates. 
The fair value of the Company’s derivative contracts includes an adjustment for credit risk for either the 
Company or the counter party as applicable. Changes in the assumptions for inputs into the models affect 
the fair value of the derivatives recognized in the statement of financial position as well as the unrealized 
gains or losses recognized in net income.  
Carrying amounts of mineral properties and associated mine closure and reclamation costs
Changes in mineral reserves and resources information could impact depreciation and depletion rates, asset 
carrying amounts and the provisions for mine closure and reclamation costs. The Company determines its 
mineral reserves and resources based on information compiled by competent individuals. Mineral reserves 
and resources information is used in the calculation of depreciation, depletion and determination, when 
applicable, of the recoverable amount of CGUs, and for forecasting the timing of reclamation and closure 
cost expenditures. 
There are numerous uncertainties inherent in estimating mineral reserves, and assumptions that are valid at 
the time of estimation may change significantly when new information becomes available. Changes in the 
estimation methodology, forecasted prices of commodities, exchange rates, production costs or recovery 
rates may change the economic status of mineral reserves and may, ultimately, result in changes in the 
mineral reserves.
Mine closure and reclamation costs
Significant estimates and assumptions are made in determining the provision for mine closure and 
reclamation costs as there are numerous factors that will affect the ultimate liability payable. These factors 
include estimation of the extent and cost of rehabilitation activities, timing of future cash flows, discount 
rates, inflation rate, and regulatory requirements.
Changes in the above factors can result in a change to the provision recognized by the Company. Changes to 
mine closure and rehabilitation costs are recorded with a corresponding change to the carrying amounts of 
related mineral properties, plant and equipment. Adjustments to the carrying amounts of related mineral 
properties, plant and equipment can result in a change to future depreciation and depletion expense.
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
Income taxes
The determination of the Company’s tax expense for the period and deferred tax assets and liabilities 
involves significant estimation and judgment by management. In determining these amounts, management 
interprets tax legislation in a variety of jurisdictions and makes estimates of the expected timing of the 
reversal of deferred tax assets and liabilities. Management also makes estimates of future earnings, which 
affect the extent to which potential future tax benefits may be used. The Company is subject to assessments 
by various taxation authorities, which may interpret legislation differently. These differences may affect the 
final amount or the timing of the payment of taxes. The Company provides for such differences where 
known based on management’s best estimate of the probable outcome of these matters.
The Company operates in Brazil where tax authorities may audit income tax treatments and the resolution of 
such audits may span multiple years. Tax law in Brazil is complex and often subject to changes and to varied 
interpretations; accordingly, the ultimate outcome with respect to income tax treatments may differ from the 
amounts recognized. The Company’s assessment of whether it is probable that uncertain income tax 
treatments will be accepted by tax authorities in Brazil is a significant management judgment.
Deferred Revenue
Judgment and estimates were required in determining the accounting for the precious metal purchase 
agreement ("PMPA") with RGLD Gold AG, a subsidiary of Royal Gold Inc. (collectively "Royal Gold"), which 
is accounted for as deferred revenue in accordance with IFRS 15 Revenue from Contracts with Customers 
(“IFRS 15”). As the Company’s obligation under the precious metal purchase agreement will be satisfied 
through deliveries of a non-financial item (i.e. deliveries of gold ounces), rather than cash or other financial 
assets, it was determined to be entered into and continued to be held for the purpose of the delivery of a 
non-financial item in accordance with the Company’s expected sale or usage requirements and thus not 
within the scope of IFRS 9 Financial Instruments (“own use exemption”). The determination of whether the 
own use exemption applies requires management’s judgements.
 
Each period management estimates the cumulative amount of the deferred revenue obligation that has been 
satisfied and, therefore, recognized as revenue. Key inputs into the estimate of the amount of deferred 
revenue that should be recognized include the following:
a.
Future gold prices were used at inception of the contract to estimate the expected total consideration to 
be received under the contract including variable consideration and is used as the stand alone selling 
price to allocate the consideration to each ounce of gold to be delivered to Royal Gold, and
b.
Expected life of mine gold production and the timing thereof, which is estimated based on the approved 
life of mine for the NX Gold mine and estimated proven and probable reserves.
Expected credit loss provision
Significant estimates and assumptions are made in determining the expected credit loss provision for 
financial assets that are measured at amortized costs as there are numerous factors that will affect the 
ultimate asset receivable. These factors include exposure at default, the expected recovery, the discount 
rate, and the timing of expected cash flow. 
 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
(e)  New Accounting Policies, Standards and Interpretations
On January 1, 2024, the Company adopted the following amendments to accounting standards: 
•
In January 2020, the IASB issued Classification of Liabilities as Current or Non-current 
(Amendments to IAS 1) which amended IAS 1, Presentation of Financial Statements (“IAS 1”), to 
clarify the requirements for presenting liabilities in the statement of financial position. The 
amendments specify that the Company must have the right to defer settlement of a liability for at 
least 12 months after the reporting period for the liability to be classified as non-current. In addition, 
the amendments clarify that: (a) the Company’s right to defer settlement must exist at the end of the 
reporting period; (b) classification is unaffected by management’s intentions or expectations about 
whether the Company will exercise its right to defer settlement; (c) if the Company’s right to defer 
settlement is subject to the Company complying with specified conditions, the right exists at the end 
of the reporting period only if the Company complies with those conditions at the end of the 
reporting period, even if the lender does not test compliance until a later date; and (d) the term 
settlement includes the transfer of the Company’s own equity instruments to the counterparty that 
results in the extinguishment of the liability, except when the settlement of the liability with the 
Company transferring its own equity instruments is at the option of the counterparty and such 
option has been classified as an equity instrument, separate from the host liability. 
•
In October 2022, the IASB issued amendment Non-current Liabilities with Covenants to IAS 1 to 
clarify that covenants of loan arrangements which the Company must comply with only after the 
reporting date would not affect classification of a liability as current or non-current at the reporting 
date. The amendment also introduces additional disclosure requirements related to such covenants 
to include: (i) the nature of the covenants and the date by which the Company must comply with the 
covenants; (ii) the carrying amount of the related liabilities; and (iii) facts and circumstances, if any, 
that indicate that the Company may have difficulty complying with covenants.
The adoption of these amendments did not have a material impact on the Company's consolidated financial 
statements. 
(f)
Future Changes in Accounting Policies Not Yet Effective as of December 31, 2024
In April 2024, the IASB issued IFRS 18, Presentation and Disclosure in Financial Statements ("IFRS 18") to 
replace IAS 1. IFRS 18 introduces two newly required subtotals on the face of the income statement, which 
includes operating profit and profit or loss before financing and income tax, and three new income statement 
classifications, which are operating, investing, and financing. In addition, IFRS 18 requires non-IFRS 
management performance measures that are subtotals of income and expenses to be disclosed on financial 
statement. IFRS 18 also provides additional guidance on principles of aggregation and disaggregation which 
apply to the primary financial statements and the notes. IFRS 18 will not affect the recognition and 
measurement of items in the financial statements, nor will it affect which items are classified in other 
comprehensive income and how these items are classified The standard is effective for reporting periods 
beginning on or after January 1, 2027. Retrospective application is required and early application is 
permitted. The Company is currently assessing the effect of this new standard on our financial statements. 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
3.
Material Accounting Policies
(a) Revenue
Revenue relating to the sale of metals is recognized at the point the customer obtains control of the product 
and when the Company has satisfied its performance obligations. Control is transferred when title has 
passed to the purchaser, the product is physically delivered to the customer, the customer controls the risks 
and rewards of ownership and the Company has a present right to payment for the product, which is 
generally when the concentrate or doré is delivered to a location designated by the customer, or when gold 
credits are transferred to the customer. Revenue from the sale of metals is recognized on a net basis, after 
metal deductions, smelting, refining and other charges.
The sales amount is typically based on quoted market and contractual prices which are fixed at the time the 
shipment is received at the customers’ premises. In certain circumstances the sales price of metals in 
concentrate may be determined in a period subsequent to the date of sale (provisionally priced sales) based 
on the terms of specific copper concentrate contracts. Provisionally priced sales are recognized based on an 
estimate of metal contained using forward market prices corresponding with the expected date that final 
sales prices will be fixed. The period between provisional pricing and final settlement can be up to one 
month. The settlement receivable is recorded at fair value each reporting period by reference to forward 
market prices until the date of final pricing, with the changes in fair value recorded as an adjustment to 
revenue.
Deferred revenue primarily consists of payments received by the Company in consideration for future 
commitments to deliver an amount of gold equivalent to a percentage of the gold produced from its NX Gold 
operations. As gold deliveries are made, the Company recognizes a portion of the deferred revenue as 
revenue, calculated on a per unit basis using the total number of gold ounces expected to be delivered over 
the life of the mine. The current portion of deferred revenue is based on deliveries anticipated over the next 
twelve months.
Interest expense on deferred revenue is recognized in finance costs as there is a significant financing 
component related to the precious metal purchase agreement, resulting from a difference in the timing of 
the upfront consideration received and delivery of the gold. The interest rate is based on the rate implicit in 
the precious metal purchase agreement at the date of inception.
The additional consideration to be received under the precious metal purchase agreement is considered 
variable, subject to changes in the total estimated gold ounces to be delivered and gold prices. Changes to 
variable consideration are accounted for prospectively as a cumulative catch-up and are recorded in revenue 
in profit or loss. 
(b) Finance Income and Finance Expense
Finance income includes interest on cash and cash equivalents, restricted cash and financial investments, 
and gains related to changes in the fair value of financial assets measured at fair value through profit or loss. 
Interest income is recognized as it accrues in profit or loss, using the effective interest method.
Finance expense comprises of interest expense on loans and borrowings, accretion expense on provisions, 
leases and deferred revenue, commitment fees and losses related to changes in the fair value of financial 
assets measured at fair value through profit or loss and expected credit losses. Borrowing costs that are not 
directly attributable to the acquisition, construction or production of a qualifying asset are recognized in 
profit or loss using the effective interest method.  
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
(c) Taxation
Current income tax is the expected tax payable or receivable on the taxable income or loss for the year using 
tax rates enacted or substantively enacted at the reporting date.  
Deferred income tax is recognized in respect of temporary differences between the carrying amounts of 
assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. Deferred 
income tax is measured at the tax rates that are expected to be applied to temporary differences when they 
reverse, based on the tax laws that have been enacted or substantively enacted at the reporting date. 
Deferred income tax assets and liabilities are offset if there is a legally enforceable right to offset current tax 
liabilities and assets, and they relate to income taxes levied by the same tax authority on the same taxable 
entity.  Deferred income tax is not recognized for the initial recognition of assets or liabilities in a transaction 
that is not a business combination, that affects neither accounting nor taxable income or loss, and does not 
give rise to equal taxable and deductible temporary differences at the time of the transaction, differences 
related to investments in subsidiaries to the extent that it is probable that they will not reverse in the 
foreseeable future, and taxable differences arising from the initial recognition of goodwill.
A deferred income tax asset is recognized for unused tax losses, tax credits and deductible temporary 
differences, to the extent that it is probable that future taxable profits will be available against which they 
can be utilized.  Deferred income tax assets are reviewed at each reporting date and are reduced to the 
extent that it is no longer probable that the related tax benefit will be realized.
Uncertainties over income tax treatments are evaluated on the basis of whether it is probable that they will 
be accepted upon examination by the relevant taxing authorities including Brazil. These uncertainties impact 
the amount of income taxes recognized. If it is determined that an uncertain income tax treatment is not 
probable of being accepted, the effect of the uncertain income tax treatment is reflected in the determination 
of income taxes based the most likely amount or, if there are a wide range of possible outcomes, the 
expected value.
(d) Tax Incentive
The Company receives certain tax incentives in Brazil.  These tax incentives are recognized in profit or loss in 
the period the incentives are received or receivable and recorded against the expenditure that they are 
intended to compensate. 
(e) Inventories
Inventories are measured at the lower of cost and net realizable value. The cost of consumable inventory is 
determined on a weighted average acquisition cost basis.  Cost of stockpile inventory, products in progress 
and finished goods is determined based on a weighted average production cost basis and includes the cost 
of mining and processing ore including direct labour and materials; depreciation and amortization; and an 
appropriate share of production overheads based on normal operating capacity. 
Net realizable value of stockpile inventory, products in progress and finished goods is the estimated selling 
price in the ordinary course of business, less estimated completion costs and selling expenses. Write-downs 
of inventories to net realizable value are included in the cost of sales in the period of the write-down. A 
write-down of inventories is reversed in a subsequent period if there is a subsequent increase in the net 
realizable value of the related inventories.
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
(f) Mineral Properties, Plant and Equipment
Mineral properties, plant and equipment is measured at acquisition or construction cost less accumulated 
depreciation and accumulated impairment losses.   
(i)
Acquisition and disposal
The cost of mineral properties, plant and equipment include expenditures directly attributable to an asset’s 
acquisition. The cost of assets constructed by Company includes the cost of materials and direct labor, any 
other costs to bring the asset in the place and conditions required to be operated in the manner intended by 
management including advances on long lead items, mine closure and rehabilitation costs, and borrowing 
costs on qualifying assets.
When parts of mineral properties, plant and equipment have different useful lives, they are accounted for as 
separate items (major components) of mineral properties, plant and equipment.
Gains and losses on disposal of mineral properties, plant and equipment are determined by comparing the 
proceeds from disposal with the carrying amount of equipment and are recognized net within other income.  
(ii) Subsequent costs
The cost of replacing plant and equipment is recognized in the carrying amount of the item if it is probable 
that the future economic benefits embodied within the item will flow to the Company and its cost can be 
measured reliably.  The carrying amount of the replaced item is derecognized. The maintenance service costs 
of plant and equipment are included in profit or loss.  
(iii) Development and construction-in-progress
When economically viable mineral reserves have been determined and the decision to proceed with 
development has been approved, exploration and evaluation assets are first assessed for impairment, then 
reclassified to construction-in-progress or mineral properties. The expenditures related to development and 
construction are capitalized as construction-in-progress. Borrowing costs directly attributable to the 
acquisition, construction or production of a qualifying asset that takes a substantial period of time to get 
ready for its intended use are capitalized as part of construction-in-progress until the asset is substantially 
ready for its intended use. Construction-in-progress is not depreciated.  
Once an asset is available for use, construction-in-progress costs are reclassified to mineral properties or 
plant and equipment. 
Pre-production costs of removing overburden to access ore in the open pit mines and developing access 
headings in the underground mines are capitalized as pre-production stripping or development costs 
respectively and are included within mineral properties, plant and equipment.  
(iv) Mineral properties
Mineral properties consist of the cost of acquiring and developing mineral properties. Once in production, 
mineral properties are amortized on a units-of-production basis over the component of the ore body to 
which they relate.
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
(v) Stripping costs and development in the production phase
Where open pit production stripping or underground development activities do not result in inventory 
produced, but does provide improved access to the ore body, the costs are classified as mineral properties 
when these activities meet all of the following criteria: (1) it is probable that the future economic benefit 
associated with the activity will flow to the Company; (2) the Company can estimate the mineral reserve of 
the ore body for which access has been improved; and (3) the costs relating to the activity associated with 
that mineral reserve can be measured reliably. 
For underground mines, costs incurred to access a mineral reserve of the ore body are capitalized to mineral 
properties or construction-in-progress and are depreciated on a units-of-production basis over the expected 
useful life of the identified mineral reserve of the ore body to which access has been improved as a result of 
the development activity.  For open pit mines, stripping costs above average life of mine strip ratio (waste/
ore) are capitalized to mineral properties or construction-in-progress and are depreciated over the related 
mineral reserves accessed by the stripping activity.
(vi) Depreciation
Items of mineral properties, plant and equipment are depreciated based on the estimated economic useful 
life of each component as follows:
Buildings
Lessor of life of mine or up to 25 years
Mining equipment
4 years / units of production
Mobile equipment & other assets
5 years
Mineral properties
Units of production
Mine closure and rehabilitation costs
Units of production or period until remediation
Right of use assets
Shorter of the term of lease and life of asset
The depletion of mineral properties and mine closure and rehabilitation costs is determined based on the 
ratio of tonnes of copper/kilogram of gold contained in the ore mined and total proven and probable mineral 
reserve tonnes of contained copper/kilogram of contained gold.  
Depreciation methods, useful lives and residual values are reviewed at each financial year end and adjusted 
if appropriate.  
(g) Exploration and Evaluation Assets
Exploration and evaluation costs relate to the initial search for a mineral deposit, the cost of acquisition of a 
mineral properties interest or exploration rights and the subsequent evaluation to determine the economic 
potential of the mineral deposit. The exploration and evaluation stage commences when the Company 
obtains the legal right or license to begin exploration. Once the legal rights or license is obtained, 
exploration and evaluation expenses are capitalized as exploration and evaluation assets. Costs incurred 
prior to the Company obtaining the legal rights are expensed.
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
When the exploration and evaluation of a mineral properties indicates that development of the mineral 
properties is technically and commercially feasible, the future economic benefits are probable, and the 
Company has the intention and sufficient resources to complete the development and use or sell the asset, 
the related costs are transferred from exploration and evaluation assets to mineral properties, plant and 
equipment.
Management reviews the carrying value of capitalized exploration costs for indicators that the carrying value 
is impaired at least annually and when facts and circumstances suggest that the carrying amount may 
exceed the recoverable amount. The review is based on the Company’s intentions for further exploration and 
development of the undeveloped property, results of drilling, commodity prices and other economic and 
geological factors. Subsequent recovery of the resulting carrying value depends on successful development 
or sale of the undeveloped project. If a property does not prove viable, all non-recoverable costs associated 
with the project, net of any previous impairment provisions, are written off.
(h) Financial Instruments 
Non-derivative financial assets
The Company classifies its financial assets in the following categories: at fair value through profit or loss 
(“FVTPL”), at fair value through other comprehensive income (“FVTOCI”) or at amortized cost. The 
classification depends on the purpose for which the financial assets were acquired.  Management 
determines the classification of its financial assets at initial recognition. Measurement and classification of 
financial assets is dependent on the Company’s business model for managing the financial assets and the 
contractual cash flow characteristics of the financial asset.  Financial assets are derecognized when they 
mature or are sold, and substantially all the risks and rewards of ownership have been transferred.  
Classification and measurement 
 
The Company has assessed the classification and measurement of its financial assets and financial liabilities 
under IFRS 9 in the following table: 
 
Measurement Category
Financial Assets
Cash and cash equivalents
Amortized Cost
Short-term investments
Amortized Cost
Trade receivables related to provisional priced sales
Fair value through profit or loss
Derivatives
Fair value through profit or loss
Notes and other receivables
Amortized Cost
Deposits
Amortized Cost
Financial Liabilities
Trade payables
Amortized Cost
Loans and borrowings
Amortized Cost
Derivatives
Fair value through profit or loss
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
Financial assets at FVTPL
Financial assets carried at FVTPL are initially recorded at fair value and transaction costs are expensed in the 
income statement. Realized and unrealized gains and losses arising from changes in the fair value of the 
financial asset held at FVTPL are included in profit or loss in the period in which they arise. 
Financial assets at amortized cost
Financial assets at amortized cost are initially recognized at fair value and subsequently carried at amortized 
cost less any impairment. They are classified as current assets or non-current assets based on their maturity 
date. Gains and losses on derecognition of financial assets classified amortized cost are recognized in profit 
or loss.
Financial liabilities
Financial liabilities, other than derivative instruments, are recognized initially at fair value, net of transaction 
costs incurred, and are subsequently measured at amortized cost. Any difference between the amounts 
originally received, net of transaction costs, and the redemption value is recognized in profit and loss over 
the period to maturity using the effective interest method.
Derivative instruments 
Derivative instruments, including embedded derivatives in executory contracts or financial liability contracts, 
are classified as at FVTPL and, accordingly, are recorded in the statement of financial position at fair value. 
Unrealized gains and losses on derivatives are recorded as part of the revenue or expense item to which the 
derivative relates, depending on the nature of the derivative. Fair values for derivative instruments are 
determined using inputs based on market conditions existing at the balance sheet date or settlement date of 
the derivative. Derivatives embedded in non-derivative contracts are recognized separately unless they are 
closely related to the host contract.  
Fair values
A number of the Company’s accounting policies and disclosures require the measurement of fair values, for 
both financial and non-financial assets and liabilities.
When measuring the fair value of an asset or liability, the Company uses observable market data, as much 
as possible. Fair values are classified into different levels in a hierarchy based on the inputs used in the 
valuation techniques, as follows:
•
Level 1: quoted prices (without adjustments) in active markets for identical assets or liabilities.   
•
Level 2: inputs other than Level 1 quoted prices, that are observable for the asset or liability, either 
directly (i.e. as prices) or indirectly (i.e. derived from prices).   
•
Level 3: inputs, for assets or liabilities, that are not based on observable market information (non-
observable inputs).
The Company recognizes transfers between levels of the hierarchy of fair value at the end of the reporting 
period during which the change occurred.
When applicable, additional information on the assumptions used in the fair value calculations are disclosed 
in the specific notes of the corresponding asset or liability.  
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
(i)
Impairment
 
i)
Financial assets
The Company recognizes a loss allowance for expected credit losses on financial assets that are measured 
at amortized cost. At each reporting date, the loss allowance for the financial asset is measured at an 
amount equal to the lifetime expected credit losses if the credit risk on the financial asset has increased 
significantly since initial recognition. If at the reporting date, the financial asset has not increased 
significantly since initial recognition, the loss allowance is measured for the financial asset at an amount 
equal to twelve months’ expected credit losses. For trade receivables the Company applies the simplified 
approach to providing for expected credit losses, which allows the use of a lifetime expected loss provision. 
Impairment losses on financial assets carried at amortized cost are reversed in subsequent periods if the 
amount of the loss decreases and the decrease can be objectively related to an event occurring after the 
impairment was recognized. The expected lifetime credit loss provision for trade receivables is based on 
historical counterparty default rates and adjusted for relevant forward-looking information, when required. 
ii)
Non-Financial assets
At each reporting date, the carrying amounts of the Company’s mineral properties, plant and equipment and 
exploration and evaluation assets are reviewed to determine whether there is any indication that those 
assets are impaired. If such indication exists, the recoverable amount of the asset is estimated in order to 
determine the extent of the impairment, if any. The recoverable amount is the higher of fair value less costs 
to sell and value in use, which is the present value of future cash flows expected to be derived from the 
asset or its related cash generating unit. For purposes of impairment testing, assets are grouped at the 
lowest levels that generate cash inflows from continuing use that are largely independent of the cash 
inflows of other assets or groups of assets (the “cash-generating unit”).
If the recoverable amount of an asset or cash-generating unit is estimated to be less than its carrying 
amount, the carrying amount of the associated assets are reduced to their recoverable amount and the 
impairment loss is recognized in the profit or loss for the period.
Impairment losses recognized in prior periods are assessed at each reporting date for any indications that 
the loss has decreased or no longer exists.  An impairment charge is reversed through profit or loss only to 
the extent that the asset’s carrying amount does not exceed the carrying amount that would have been 
determined, net of any applicable depreciation, if no impairment loss had been recognized.   
(j)
Provisions
A provision is recognized when the Company has a present legal or constructive obligation as a result of a 
past event that can be estimated reliably, and it is probable that an outflow of economic benefits will be 
required to settle the obligation. Provisions are calculated based on the expected future cash flows 
discounted, if material, at a pre-tax rate that reflects the current market assessments of the time value of 
money and the risks specific to the liability. The discount is unwound over the period over which the cash 
flows are expected to be incurred with the related expense included in finance expense.
The Company records the present value of estimated costs of legal and constructive obligations related to 
mine closure and rehabilitation in the period in which the obligation occurs. Mine closure and rehabilitation 
activities include facility decommissioning and dismantling; removal and treatment of waste materials; site 
and land rehabilitation, including compliance with and monitoring of environmental regulations; and related 
costs required to perform this work and/or operate equipment designed to reduce or eliminate 
environmental effects.  The provision is adjusted each period for new disturbances, and changes in 
regulatory requirements, the estimated amount of future cash flows required to discharge the obligation, the 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

78
Annual Report | 2024
timing of such cash flows and the pre-tax discount rate specific to the liability.  The unwinding of the 
discount is recognized in profit or loss as a finance expense.
When the provision is initially recognized, the corresponding cost is included in the carrying amount of the 
related asset and is amortized to profit or loss on a unit-of-production basis.  
(k) Share-Based Compensation
The Company issues share based payment awards to employees and consultants, including directors and 
officers ("Eligible Persons"). The grant date fair value of equity settled share based payment awards is 
recognized as share-based compensation, with a corresponding increase in equity, over the vesting period. 
The amount recognized as an expense is based on management's best estimate of the number of equity 
instruments expected to vest. The cumulative amount expensed is adjusted at the end of each reporting 
period to reflect changes in the number of instruments expected to vest. 
Performance share units and deferred share units are liability awards settled in cash and measured at the 
quoted market price at the grant date with the corresponding expense recognized over vesting period. The 
corresponding liability is adjusted for changes in fair value at each subsequent reporting date until the 
awards are settled. The performance share units liability is also adjusted to reflect the number of awards for 
which the related service and non-market vesting conditions are expected to be performed or satisfied. 
(l) Leases
The Company recognizes a right-of-use asset and a lease liability at the lease commencement date. The 
right-of-use asset is initially measured at cost, and subsequently at cost less any accumulated depreciation 
and impairment losses, and adjusted for certain re-measurements of the lease liability. The cost of the right-
of-use asset includes the amount of the initial measurement of the lease liability, any lease payments made 
at or before the commencement date, less any lease incentives received, any initial direct costs; and if 
applicable, an estimate of costs to be incurred by the Company in dismantling and removing the underlying 
asset, restoring the site on which it is located or restoring the underlying asset to the condition required by 
the terms and conditions of the lease. 
The lease liability is initially measured at the present value of the lease payments that are not paid at the 
commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily 
determined, the Company’s incremental borrowing rate. The incremental borrowing rate reflects the rate of 
interest that the lessee would have to pay to borrow the funds necessary to obtain an asset of similar value 
in a similar economic environment with similar terms and conditions. Generally, the Company uses its 
incremental borrowing rate as the discount rate. 
The lease liability is subsequently increased by the interest cost on the lease liability and decreased by lease 
payments made. It is remeasured when there is a change in future lease payments arising from a change in 
an index or rate, a change in the estimate of the amount expected to be payable under a residual value 
guarantee, or as appropriate, changes in the assessment of whether a purchase or extension option is 
reasonably certain to be exercised or a termination option is reasonably certain not to be exercised.
The Company does not recognize right-of-use assets and lease liabilities for leases of low-value assets and 
leases with lease terms that are less than 12 months. Lease payments associated with these leases are 
instead recognized as an expense over the lease term on either a straight-line basis, or another systematic 
basis if more representative of the pattern of benefit.  
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
(m) Income or Loss per Share
Basic income or loss per share is calculated by dividing the net income attributable to common shareholders 
of the Company by the weighted average number of common shares outstanding during the period.  Diluted 
income per common share is calculated by adjusting the weighted average number of common shares 
outstanding for the effect of conversion of all potentially dilutive share equivalents, such as stock options 
and share units.  The dilutive effect of share options assumes that the receipt of proceeds upon exercise of 
the options are used to repurchase common shares at the average market price during the period.  The net 
effect of the shares issued less the shares assumed to be repurchased is added to the basic weighted 
average shares outstanding. For equity-settled share units (as defined herein, see note 15(f)), the common 
shares to be included in the diluted per share calculation is based on the number of shares that would be 
issuable if the reporting date were the end of the vesting period. 
4.
Segment Disclosure
Operating segments are determined by the way information is reported and used by the Company's Chief 
Operating Decision Maker ("CODM") to review operating performance. The Company monitors the operating 
results of its operating segments independently for the purpose of making decisions about resource allocation 
and performance assessment.  
For the year ended December 31, 2024, the Company’s reporting segments include its three operating mines in 
Brazil, the Caraíba Operations, the Tucumã Operation, and the Xavantina Operations, and its corporate head 
office in Canada. Significant information relating to the Company's reportable segments is summarized in the 
tables below:
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

80
Annual Report | 2024
Year ended December 31, 2024
Caraíba 
(Brazil)
Xavantina
(Brazil)
Tucumã
(Brazil)
Corporate and 
Other
Consolidated
Revenue
$ 
311,777 
$ 
127,303 
$ 
31,179 
$ 
— 
$ 
470,259 
Cost of production
 
(158,006)  
(30,055)  
(4,805)  
— 
 
(192,866) 
Depreciation and depletion
 
(65,194)  
(20,390)  
(149)  
— 
 
(85,733) 
Sales expense
 
(7,443)  
(1,969)  
(1,695)  
— 
 
(11,107) 
Cost of sales
 
(230,643)  
(52,414)  
(6,649)  
— 
 
(289,706) 
Gross profit
 
81,134 
 
74,889 
 
24,530 
 
— 
 
180,553 
Expenses
General and administrative
 
(26,044)  
(6,545)  
(2,172)  
(14,837)  
(49,598) 
Share-based compensation
 
— 
 
— 
 
— 
 
(9,983)  
(9,983) 
Write-down of exploration and 
evaluation asset
 
(1,299)  
— 
 
— 
 
(10,752)  
(12,051) 
Finance income
 
2,498 
 
654 
 
70 
 
1,078 
 
4,300 
Finance expenses
 
(12,259)  
(3,565)  
(369)  
(896)  
(17,089) 
Foreign exchange (loss) gain
 
(165,488)  
(112)  
229 
 
363 
 
(165,008) 
Other (expenses) income
 
(5,463)  
66 
 
(768)  
(400)  
(6,565) 
(Loss) income before taxes
 
(126,921)  
65,387 
 
21,520 
 
(35,427)  
(75,441) 
Current tax expense
 
(1,287)  
(11,271)  
— 
 
(5,104)  
(17,662) 
Deferred tax recovery (expense)
 
25,461 
 
(148)  
— 
 
— 
 
25,313 
Net (loss) income
$ 
(102,747) $ 
53,968 
$ 
21,520 
$ 
(40,531) $ 
(67,790) 
Capital expenditures(1)
 
165,681 
 
24,625 
 
126,782 
 
7,847 
 
324,935 
Assets
Current 
$ 
65,116 
$ 
12,691 
$ 
16,600 
$ 
47,383 
 
141,790 
Non-current
 
818,324 
 
85,013 
 
400,889 
 
12,012 
 
1,316,238 
Total Assets
$ 
883,440 
$ 
97,704 
$ 
417,489 
$ 
59,395 
$ 
1,458,028 
Total Liabilities
$ 
166,730 
$ 
85,448 
$ 
40,174 
$ 
574,602 
 
866,954 
(1)  Capital expenditures include additions to mineral properties, plant and equipment and additions to exploration and evaluation asset, 
net of non-cash additions such as change in estimates to mine closure costs, capitalized depreciation expense, capitalized borrowing 
costs, and additions of right-of-use assets.
During the year ended December 31, 2024, the Company had six significant customers (December 31, 2023 - 
six), including four copper customers (December 31, 2023 - four) and two gold customers (December 31, 2023 - 
two).
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

81
Annual Report | 2024
Year ended December 31, 2023
Caraíba 
(Brazil)
Xavantina
(Brazil)
Tucumã 
(Brazil)
Corporate and 
Other
Consolidated
Revenue
$ 
320,603 
$ 
106,877 
$ 
— 
$ 
— 
$ 
427,480 
Cost of production
 
(153,187)  
(25,209)  
— 
 
— 
 
(178,396) 
Depreciation and depletion
 
(62,032)  
(19,489)  
— 
 
— 
 
(81,521) 
Sales expense
 
(8,953)  
(1,765)  
— 
 
— 
 
(10,718) 
Cost of sales
 
(224,172)  
(46,463)  
— 
 
— 
 
(270,635) 
Gross profit
 
96,431 
 
60,414 
 
— 
 
— 
 
156,845 
Expenses
General and administrative
 
(31,128)  
(6,550)  
— 
 
(14,751)  
(52,429) 
Share-based compensation
 
— 
 
— 
 
— 
 
(9,218)  
(9,218) 
Finance income
 
5,543 
 
630 
 
— 
 
6,292 
 
12,465 
Finance expenses
 
(10,143)  
(4,431)  
— 
 
(11,248)  
(25,822) 
Foreign exchange gain (loss)
 
34,737 
 
— 
 
— 
 
(125)  
34,612 
Other (expenses) income
 
(4,147)  
111 
 
— 
 
(66)  
(4,102) 
Income (loss) before taxes
 
91,293 
 
50,174 
 
— 
 
(29,116)  
112,351 
Current tax expense
 
(1,796)  
(7,446)  
— 
 
(6,750)  
(15,992) 
Deferred tax (expense) recovery
 
(2,618)  
563 
 
— 
 
— 
 
(2,055) 
Net income (loss)
$ 
86,879 
$ 
43,291 
$ 
— 
$ 
(35,866) $ 
94,304 
Capital expenditures(1)
 
249,166 
 
27,567 
 
205,506 
 
7,262 
 
489,501 
Assets
Current 
$ 
79,463 
$ 
23,736 
$ 
2,016 
$ 
94,272 
 
199,487 
Non-current
 
883,712 
 
96,140 
 
315,144 
 
17,205 
 
1,312,201 
Total Assets
$ 
963,175 
$ 
119,876 
$ 
317,160 
$ 
111,477 
$ 
1,511,688 
Total Liabilities
$ 
138,497 
$ 
101,095 
$ 
30,943 
$ 
431,822 
 
702,357 
(1)  Capital expenditures include additions to mineral properties, plant and equipment and additions to exploration and evaluation asset, 
net of non-cash additions such as change in estimates to mine closure costs, capitalized depreciation expense, capitalized borrowing 
costs, and additions of right-of-use assets.
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
5.
Inventories
December 31, 
2024
December 31, 
2023
Supplies and consumables
$ 
28,980 $ 
24,270 
Stockpiles
 
5,024  
5,624 
Work in progress
 
3,049  
917 
Finished goods
 
5,041  
11,443 
$ 
42,094 $ 
42,254 
6.
Other Current Assets
December 31, 
2024
December 31, 
2023
Advances to suppliers
$ 
3,157 $ 
306 
Prepaid expenses and other
 
5,879  
5,660 
Derivatives (Note 23)
 
— 
 
11,254 
Note receivable (Note 23)
 
4,678  
8,346 
Value added taxes recoverable
 
14,897  
13,719 
$ 
28,611 $ 
39,285 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

83
Annual Report | 2024
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)
7.
Mineral Properties, Plant and Equipment 
Buildings
Mining 
Equipment
Mineral 
Properties(1)
Projects in 
Progress
Equipment & 
Other Assets
Deposit on 
Projects
Mine Closure 
Costs
Right-of-Use 
Assets
Total
Cost:
Balance, December 31, 2022
$ 
22,038 
$ 
194,455 
$ 
553,687 
$ 
111,821 
$ 
19,262 
$ 
39,274 
$ 
14,188 
$ 
28,449 
$ 
983,174 
Additions
 
2,672 
 
47,846 
 
98,046 
 
217,988 
 
3,207 
 
107,226 
 
— 
 
20,019 
 
497,004 
Capitalized borrowing costs
 
— 
 
— 
 
— 
 
16,983 
 
— 
 
— 
 
— 
 
— 
 
16,983 
Change in estimates
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
3,119 
 
— 
 
3,119 
Disposals
 
— 
 
(2,844) 
 
(746) 
 
(41) 
 
(58) 
 
(56)  
— 
 
(1,831) 
 
(5,576) 
Transfers
 
10,405 
 
28,566 
 
898 
 
57,669 
 
2,639 
 
(100,177)  
— 
 
— 
 
— 
Foreign exchange
 
2,131 
 
17,466 
 
45,923 
 
15,237 
 
1,563 
 
3,275 
 
1,202 
 
2,692 
 
89,489 
Balance, December 31, 2023
 
37,246 
 
285,489 
 
697,808 
 
419,657 
 
26,613 
 
49,542 
 
18,509 
 
49,329 
 
1,584,193 
Additions(2)
 
3,888 
 
53,331 
 
82,063 
 
145,333 
 
3,986 
 
25,991 
 
— 
 
18,012 
 
332,604 
Capitalized borrowing costs
 
— 
 
— 
 
— 
 
36,467 
 
— 
 
— 
 
— 
 
— 
 
36,467 
Change in estimates
 
— 
 
— 
 
— 
 
— 
 
— 
 
— 
 
7,890 
 
— 
 
7,890 
Disposals
 
— 
 
(3,160)  
(940)  
(5)  
(253)  
— 
 
— 
 
(4,450)  
(8,808) 
Transfers (Note 8)
 
4,705 
 
32,316 
 
30,585 
 
(2,158)  
2,929 
 
(55,906)  
— 
 
(789)  
11,682 
Foreign exchange
 
(9,246)  
(73,032)  
(165,758)  
(98,273)  
(6,303)  
(6,927)  
(5,063)  
(12,107)  
(376,709) 
Balance, December 31, 2024
$ 
36,593 
$ 
294,944 
$ 
643,758 
$ 
501,021 
$ 
26,972 
$ 
12,700 
$ 
21,336 
$ 
49,995 
$ 
1,587,319 
Accumulated depreciation:
Balance, December 31, 2022
$ 
(5,047) 
$ 
(42,310) 
$ 
(150,559) 
$ 
— 
$ 
(6,990) 
$ 
— 
$ 
(5,227) 
$ 
(17,767) 
$ 
(227,900) 
Depreciation expense
 
(1,497) 
 
(24,209) 
 
(47,717) 
 
— 
 
(1,877) 
 
— 
 
(662) 
 
(12,565) 
$ 
(88,527) 
Disposals
 
— 
 
1,613 
 
— 
 
— 
 
52 
 
— 
 
— 
 
1,372 
$ 
3,037 
Foreign exchange
 
(440) 
 
(4,011) 
 
(11,663) 
 
— 
 
(553) 
 
— 
 
(427) 
 
(1,711) 
$ 
(18,805) 
Balance, December 31, 2023
 
(6,984) 
 
(68,917) 
 
(209,939) 
 
— 
 
(9,368) 
 
— 
 
(6,316) 
 
(30,671) 
 
(332,195) 
Depreciation expense
 
(2,022)  
(25,707)  
(41,025)  
— 
 
(2,001)  
— 
 
(732)  
(14,069)  
(85,556) 
Disposals
 
— 
 
2,950 
 
— 
 
— 
 
62 
 
— 
 
— 
 
3,537 
 
6,549 
Foreign exchange
 
1,787 
 
17,999 
 
51,053 
 
36 
 
2,097 
 
— 
 
1,474 
 
7,931 
 
82,377 
Balance, December 31, 2024
$ 
(7,219) $ 
(73,675) $ 
(199,911) $ 
36 
$ 
(9,210) $ 
— 
$ 
(5,574) $ 
(33,272) $ 
(328,825) 
Net book value, December 31, 2023
$ 
30,262 
$ 
216,572 
$ 
487,869 
$ 
419,657 
$ 
17,245 
$ 
49,542 
$ 
12,193 
$ 
18,658 
$ 
1,251,998 
Net book value, December 31, 2024
$ 
29,374 
$ 
221,269 
$ 
443,847 
$ 
501,057 
$ 
17,762 
$ 
12,700 
$ 
15,762 
$ 
16,723 
$ 
1,258,494 
(1)     Mineral properties include $57.9 million (2023 - $72.4 million) of costs on expansion of near-mine resource potential which are not currently being depreciated. 
(2)     Additions to projects in progress was net of $10.1 million in value added taxes that were transferred to other receivables during the year ended December 31, 2024 as a result of the completion of a
recoverability assessment.

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Annual Report | 2024
8.
Exploration and Evaluation Assets
As at December 31, 2024, the Company had $11.4 million (2023 - $29.9 million) in exploration and evaluation 
assets, which include several property option agreements. 
In 2024, the Company completed the exercise of various option agreements to expand near-mine resource 
potential at the Caraiba Operations. Consequently, $11.7  millionwas reclassified from exploration and 
evaluation assets to mineral properties during the period.  
In June 2024, the Company terminated the Fides option agreement, resulting in a write-down of $10.7 million in 
exploration and evaluation assets for the year ended December 31, 2024. 
In July 2024, the Company signed a definitive earn-in agreement (the "Agreement") with Salobo Metais S.A, a 
subsidiary of Vale Base Metals ("VBM"), for the Furnas copper project ("Furnas Project") located in the Carajás 
Mineral Province in Pará State, Brazil. The Agreement contemplates the Company earning a 60% interest in the 
Project upon completion of three phases of work: 
•
Phase 1: Ero to conduct a minimum of 28,000 meters of exploration drilling and produce a scoping study 
within 18 months of signing the Agreement 
•
Phase 2: Ero to conduct an additional minimum of 17,000 meters of exploration drilling and produce a 
pre-feasibility study within 18 months of completing Phase 1
•
Phase 3: Ero to conduct an additional minimum of 45,000 meters of exploration drilling, unless 
otherwise mutually agreed, and produce a definitive feasibility study ("DFS") within 24 months of 
completing Phase 2
Following the completion of a DFS, subject to customary technical review periods, and with Ero positive 
investment approval, the parties will enter into a joint venture agreement whereby VBM will transfer 60% of the 
equity interest in the Furnas Project to Ero, and Ero will grant VBM a "free carry" on certain capital expenditures 
related to development of the Furnas Project. 
Prior to a positive Ero investment decision and the formation of a joint venture, VBM will retain 100% ownership 
of the Furnas Project with Ero solely responsible for funding the phased exploration and engineering work 
programs as well as ongoing payments to maintain the property in good standing. 
As at December 31, 2024, exploration and evaluation assets include $4.9 million in expenditures associated 
with the Furnas Project.
9.    Deposits and Other Non-current Assets
December 31, 
2024
December 31, 
2023
Value added taxes recoverable
$ 
18,336 $ 
11,413 
Note receivable (Note 23)
 
7,331  
14,321 
Deposits and others
 
4,066  
3,218 
$ 
29,733 $ 
28,952 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
10. Accounts Payable and Accrued Liabilities
December 31, 
2024
December 31, 
2023
Trade suppliers
$ 
58,067 $ 
74,877 
Payroll and labour related liabilities
 
19,086  
26,421 
Value added tax, royalty and other tax payable
 
8,505  
9,142 
Cash-settled equity awards (Note 15(b) and (c))
 
8,460  
8,796 
Provision for rehabilitation and closure costs (Note 13)
 
6,766  
— 
Other accrued liabilities
 
1,002  
1,468 
$ 
101,886 $ 
120,704 
11. Loans and Borrowings
Carrying value, 
including accrued interest
Description
Currency
Security
Maturity
(Months)
Coupon rate
Principal to 
be repaid
December 31, 
2024
December 31,
2023
Senior Notes
USD
Unsecured
61
6.50%
$ 400,000 
$ 
404,152 
$ 
403,274 
Senior credit facility
USD
Secured
24
SOFR plus 
2.00% - 4.50%
 
135,000 
 
134,212 
 
— 
Copper Prepayment Facility
USD
Secured
24
8.84%
 
44,444 
 
46,530 
 
— 
Equipment finance loans
USD
Secured
1 - 28
5.00% - 8.35%
 
12,744 
 
12,933 
 
16,175 
Equipment finance loans
EUR
Secured
14 - 18
5.25%
 
522 
 
544 
 
1,000 
Equipment finance loans
BRL
Unsecured
1 - 17
nil% - 16.63%
 
2,519 
 
2,597 
 
3,409 
Bank loan
BRL
Unsecured
23
CDI + 0.50%
 
1,215 
 
1,221 
 
2,375 
Total
$ 596,444 
$ 
602,189 
$ 
426,233 
Current portion
$ 
45,893 
$ 
20,381 
Non-current portion
$ 
556,296 
$ 
405,852 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
The movements in loans and borrowings are comprised of the following:
Year ended 
Dec. 31, 2024
Year ended
December 31,
2023
Senior Notes
Senior Credit 
Facility
Copper 
Prepayment 
Facility
Other
Consolidated
Consolidated
Balance, beginning of year
$ 
403,274 $ 
— $ 
— $ 
22,959 $ 
426,233 
$ 
418,057 
Proceeds from loans and borrowings
 
155,000  
50,000  
9,565  
214,565 
 
14,889 
Principal payments
 
—  
(20,000)  
(5,556)  
(14,394)  
(39,950)  
(7,786) 
Interest payments
 
(26,000)  
(3,906)  
(810)  
(1,450)  
(32,166)  
(27,461) 
Interest costs, including interest 
capitalized
 
26,878  
4,886  
3,271  
1,432  
36,467 
 
28,282 
Deferred transaction costs
 
—  
(1,768)  
(375)  
—  
(2,143)  
— 
Foreign exchange
 
—  
—  
—  
(817)  
(817)  
252 
Balance, end of year
$ 
404,152 $ 
134,212 $ 
46,530 $ 
17,295 $ 
602,189 
$ 
426,233 
(a)  Senior Notes
In February 2022, the Company issued $400 million aggregate principal amount of senior unsecured notes (the 
“Senior Notes”). The Company received net proceeds of $392.0 million after transaction costs of $8.0 million. 
The Senior Notes mature on February 15, 2030 and bear annual interest at 6.5%, payable semi-annually in 
February and August of each year. 
MCSA has provided a guarantee of the Senior Notes on a senior unsecured basis. The Senior Notes are direct, 
senior obligations of the Company and MCSA, and are not secured by any mortgage, pledge or charge. 
The Senior Notes are subject to early redemption options by the Company. On or after February 15, 2025, the 
Company has the option, in whole or in part, to redeem the Senior Notes at a price ranging from 103.25% to 
100% of the principal amount together with accrued and unpaid interest, if any, to the date of redemption, with 
the rate decreasing based on the length of time the Senior Notes are outstanding.
Upon the occurrence of specific kinds of changes of control triggering events, each holder of the Senior Notes 
will have the right to cause the Company to repurchase some or all of its Senior Notes at 101% of their principal 
amount, plus accrued and unpaid interest to, but not including, the repurchase date.
The Senior Notes are recognized as financial liabilities, net of unamortized transaction costs, and measured at 
amortized cost using an effective interest rate of 6.7%. 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
(b) Senior Credit Facility
The Company has a Senior Revolving Credit Facility ("Senior Credit Facility") with a borrowing limit of 
$150.0 million which matures from December 2026 to December 2028. Amounts drawn on the Senior Credit 
Facility bear interest on a sliding scale at a rate of SOFR plus 2.00% to 4.50% depending on the Company’s 
consolidated total leverage ratio. Commitment fees for any undrawn portion of the Senior Credit Facility are 
based on a sliding scale between 0.45% to 1.01%. As at December 31, 2024, the Senior Credit Facility bears an 
weighted average interest rate of 8.06% on its drawn balance and a commitment fee of 0.79% on its undrawn 
balance.
During the year ended December 31, 2024, the Company drew down a total of $155.0 million from its Senior 
Credit Facility and repaid $20.0 million of the principal amount of the facility. As a result, the net drawdown on 
the Senior Credit Facility for the year ended December 31, 2024 was $135.0 million. 
The Senior Credit Facility is secured by the shares of MCSA, NX Gold and Ero Gold. The Company is required to 
comply with certain financial covenants, which are required to be tested at each quarter end. These covenants 
include (a) a total leverage ratio based on total indebtedness to rolling four quarters adjusted earnings before 
interest, taxes, depreciation and amortization ("Rolling EBITDA"); (b) a total leverage ratio based on senior 
indebtedness to Rolling EBITDA; and (c) an interest coverage ratio based on Rolling EBITDA. The Senior Credit 
Facility provides for negative covenants customary for this type of facilities and permits additional equipment 
debt and finance leases of up to $50.0 million. As at December 31, 2024, the Company is in compliance with 
these financial covenants.
(c) Copper Prepayment Facility
In May 2024, the Company entered into a non-priced copper prepayment facility with a bank syndicate. Under 
this facility, the Company received net proceeds of $49.6 million, representing gross proceeds of $50.0 million 
less transaction costs of $0.4 million. The Company has the option to increase the size of the non-priced copper 
prepayment facility from $50.0 million to $75.0 million until March 31, 2025. 
In exchange, the Company is obligated to repay the $50.0 million facility over 27 equal monthly installments, 
beginning in October 2024, through the delivery of a minimum of 272 tonnes of copper each month. The copper 
to be delivered by the Company will be in the form of LME Copper Warrants. Each monthly delivery's value will 
be determined based on prevailing market copper prices at the time of delivery. Should the value of any delivery 
exceed the amount of the monthly installment payment of $2.1 million, the excess value will be repaid to the 
Company. During the year ended December 31, 2024, the Company repaid three monthly installment payments 
totaling $6.4 million, including $5.6 million of principal and$0.8 million of interest.
As the contractual obligation of the facility will be settled in the form of financial assets, the facility is accounted 
for as a financial liability measured at amortized cost using the effective interest rate method. Transaction costs 
are included in the initial measurement of the liability and amortized over the term of the facility. 
The facility is secured by the shares of MCSA, NX Gold and Ero Gold. 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
12. Deferred Revenue
In August 2021, the Company entered into a precious metals purchase agreement (the “NX Gold PMPA”) with 
RGLD Gold AG ("Royal Gold"), a wholly-owned subsidiary of Royal Gold, Inc., in relation to gold production from 
the Xavantina Operations. The Company received upfront cash consideration of $100.0 million for the purchase 
of 25% of an equivalent amount of gold to be produced from the Xavantina mine until 93,000 ounces of gold 
have been delivered and thereafter decreasing to 10% of gold produced over the remaining life of the mine. The 
contract will be settled by the Company delivering gold to Royal Gold. Royal Gold will make ongoing payments 
equal to 20% of the then prevailing spot gold price for each ounce of gold delivered until 49,000 ounces of gold 
have been delivered and 40% of the prevailing spot gold price for each ounce of gold delivered thereafter. 
Additional advances may be made by Royal Gold based on the Company achieving certain milestones as set out 
in the NX Gold PMPA. 
The movements in NX Gold PMPA deferred revenue during the year ended December 31, 2024 are comprised of 
the following:
December 31, 
2024
December 31,
2023
Gold ounces delivered(1)
 
15,917  
14,005 
Balance, beginning of year
$ 
75,549 $ 
86,055 
Advances
 
3,249  
3,544 
Accretion expense
 
2,501  
3,032 
Amortization of deferred revenue(2)
 
(18,310)  
(17,082) 
Balance, end of year
$ 
62,989 $ 
75,549 
Current portion
$ 
14,758 $ 
17,159 
Non-current portion
 
48,231  
58,390 
(1)  During the year ended December 31, 2024, the Company delivered 15,917 ounces of gold (December 31, 2023 - 14,005 ounces) to 
Royal Gold for average consideration of $473 per ounce (December 31, 2023 - $386 per ounce). At December 31, 2024, a cumulative 
45,177 ounces (December 31, 2023 - 29,260 ounces) of gold have been delivered under the NX Gold PMPA.
(2)   Amortization of deferred revenue during the year ended December 31, 2024 is net of $3.0 million (December 31, 2023 - $2.5 million) 
related to change in estimate attributed to advances received and change in life-of-mine production estimates. 
As part of the NX Gold PMPA, the Company pledged its equity interest in Ero Gold and NX Gold to Royal Gold 
as collateral and provided unsecured limited recourse guarantees from Ero and NX Gold.
As of December 31, 2024, current portion of deferred revenue also includes a $17.0 million customer advance, 
which is related to copper concentrate to be delivered in the first quarter of 2025. 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
13. Provision for rehabilitation and closure costs
December 31, 
2024
December 31, 
2023
Balance, beginning of year
 
26,687 $ 
22,172 
Change in estimates(2)
 
12,499  
3,455 
Accretion expense
 
2,339  
2,703 
Settled
 
(5,870)  
(3,344) 
Foreign exchange
 
(6,998)  
1,701 
Balance, end of year
$ 
28,657 $ 
26,687 
Caraíba Operations
$ 
20,689 $ 
21,372 
Tucumã Project
 
3,868  
1,365 
Xavantina Operations
 
4,100  
3,950 
Total
$ 
28,657 $ 
26,687 
Current portion(1)
$ 
6,766 $ 
— 
Non-current portion
 
21,891  
26,687 
(1)  Included in accounts payable and accrued liabilities.
(2)  Included $4.6 million recognized in other expenses related to revisions to rehabilitation and closure plans and cost estimates at the 
Company’s historic mining operations that have entered the closure phase, and for which there are no substantive future economic 
value.
Provision for rehabilitation and closure costs is measured using management’s assumptions and estimates for 
future cash outflows in relation to mine closure and rehabilitation activities based on known disturbances as at 
the reporting date, known legal requirements and cost estimates prepared by a third-party specialist. 
Management used a pre-tax discount rates in the range of 11.17% – 12.92% (2023 – 8.50% - 9.79%) and an 
inflation factor in the range of 3.50% - 4.96% (2023 – 3.50% - 3.90%) in preparing the Company’s provision for 
rehabilitation and closure costs. The cash expenditures are expected to commence upon projected closure and 
occur over a period of time, which for the Caraíba Operations is in a range from 2025 to 2051, for the Xavantina 
Operations is 2030 to 2038, and for the Tucumã Project is from 2036 to 2041.  
14. Other Non-current Liabilities
December 31, 
2024
December 31, 
2023
Cash-settled equity awards (Note 15(b))
$ 
2,536 $ 
2,549 
Withholding, value added tax, and other taxes payable
 
14,437  
8,012 
Provision
 
1,588  
1,622 
Other liabilities
 
3,289  
5,975 
$ 
21,850 $ 
18,158 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
15. Share Capital
As at December 31, 2024, the Company’s authorized share capital consists of an unlimited number of common 
shares without par value.  As at December 31, 2024, 103,555,211 common shares were outstanding (December 
31, 2023 - 102,747,558).  
In November 2023, the Company completed a bought deal share offering of 9,010,000 common shares at a 
price of $12.35 per common share for gross proceeds of $111.3 million, or net proceeds of 104.3 million after 
share issuance costs.
(a)  Options
A continuity of the issued and outstanding options is as follows:
Year Ended December 31,
2024
2023
Number of 
Stock 
Options
Weighted 
Average 
Exercise 
Price (CAD)
Number of 
Stock 
Options
Weighted 
Average 
Exercise 
Price (CAD)
Outstanding stock options, beginning of year
 
1,886,325 $ 
19.03  
2,781,074 $ 
15.49 
Issued 
 
473,365  
21.00  
525,138  
18.00 
Exercised
 
(551,818)  
20.57  (1,333,199)  
11.28 
Forfeited
 
(73,265)  
19.13  
(86,688)  
18.59 
Outstanding stock options, end of year
 
1,734,607 $ 
19.07  
1,886,325 $ 
19.03 
The weighted average share price on the date of exercise for options exercised during the year ended December 
31, 2024 was CAD$29.45 (year ended December 31, 2023 - CAD$17.69). 
As at December 31, 2024, the following stock options were outstanding:
Weighted Average Exercise Prices
Number of 
Stock Options
Vested and 
Exercisable 
Number of 
Stock Options
Weighted 
Average 
Remaining Life 
in Years
$10.01 to $20.00 CAD
 
1,226,780  
837,707 
2.80
$20.01 to $25.35 CAD
 
507,827  
66,838 
4.60
$19.07 CAD ($13.25 USD)
 
1,734,607  
904,545 
3.33
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
The fair value of options granted was determined using the Black-Scholes option pricing model. The weighted 
average inputs used in the measurement of fair values at grant date of the options are the following:
Year Ended December 31,
2024
2023
Expected term (years)
 
3.4 
 
3.2 
Forfeiture rate
 — %
 — %
Volatility
 51 %
 54 %
Dividend yield
 — %
 — %
Risk-free interest rate
 2.90 %
 3.99 %
Weighted-average fair value per option
$ 
5.90 
$ 
6.38 
(b)  
Performance Share Unit Plan
The Company has a performance share unit ("PSU") plan pursuant to which the Compensation Committee may 
grant PSUs to Eligible Persons of the Company or its subsidiaries. Each PSU entitles the holder thereof to 
receive one common share, its equivalent cash value, or a combination of both, on the redemption date at the 
discretion of the Compensation Committee.
The continuity of PSUs issued and outstanding is as follows:
Year Ended December 31,
2024
2023
Outstanding balance, beginning of year
 
967,921  
881,788 
Issued 
 
357,792  
437,204 
Settled
 
(249,694)  
(238,881) 
Forfeited
 
(61,514)  
(112,190) 
Outstanding balance, end of year
 
1,014,505  
967,921 
These PSUs will vest three years from the date of grant by the Compensation Committee and the number of 
PSUs that will vest may range from 0% to 200% of the number granted, subject to the satisfaction of certain 
market and non-market performance conditions. Each vested PSU entitles the holder thereof to receive on or 
about the applicable date of vesting of such share unit (i) one common share; (ii) a cash amount equal to the fair 
market value of one common share as at the applicable date of vesting; or (iii) a combination of (i) and (ii), as 
determined by the Compensation Committee in its sole discretion. The Company has elected to settle its PSUs 
using a combination of cash and common shares in the past. As such, based on its history of past settlements, 
PSUs are classified as liabilities. 
For PSUs with non-market performance conditions, the fair value of the share units granted was initially 
recognized at the fair value using the share price at the date of grant, and subsequently remeasured at fair value 
on each balance sheet date. For PSUs with market performance conditions, the fair value was determined using 
a Geometric Brownian Motion model.  As at December 31, 2024, the fair value of the PSU liability was $6.6 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
million (December 31, 2023 - $6.5 million) of which $4.1 million (December 31, 2023 - $3.9 million) was 
recognized in accounts payable and accrued liabilities and the remainder in other non-current liabilities. 
(c) Deferred Share Unit Plan
The Deferred Share Unit ("DSU") plan was established by the Board as a component of compensation for the 
Company's independent directors. Pursuant to the DSU Plan, DSUs may only be settled by way of cash 
payment. A participant is not entitled to payment in respect of the DSUs until his or her death, retirement or 
removal from the Board.  The settlement amount of each DSU is based on the fair market value of a common 
share on the DSU redemption date multiplied by the number of DSUs being redeemed.
The continuity of DSUs issued and outstanding is as follows:
Year ended December 31,
2024
2023
Outstanding balance, beginning of year
 
307,312 
219,961
Issued 
 
67,006  
87,351 
Settled
 
(49,207)  
— 
Outstanding balance, end of year
 
325,111  
307,312 
At December 31, 2024, DSU liabilities had a fair value of $4.4 million (December 31, 2023 - $4.9 million) which 
has been recognized in accounts payable and accrued liabilities.
(d) Restricted Share Unit Plan 
The Company has a restricted share unit ("RSU") plan pursuant to which the Compensation Committee may 
grant share units to Eligible Persons of the Company or its subsidiaries. The fair value of these restricted share 
units is determined on the date of grant using the market price of the Company’s shares. Each RSU entitles the 
holder thereof to receive one common share, its equivalent cash value, or a combination of both, on the 
redemption date at the discretion of the Compensation Committee. The RSUs are equity classified based on the 
history of past settlements. 
During the year ended December 31, 2024, the Company granted 163,904 RSUs (year ended December 31, 
2023 - 203,537) to employees of the Company at weighted average fair value of $14.91 per share (year ended 
December 31, 2023 - $15.59). The total fair value of these RSUs on the grant date was $2.4 million (year ended 
December 31, 2023 - $3.2 million). 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
The continuity of RSUs issued and outstanding is as follows:
Year ended December 31,
2024
2023
Outstanding balance, beginning of year
 
340,570 
263,202
Issued 
 
163,904  
203,537 
Settled
 
(162,996)  
(95,456) 
Forfeited
 
(13,298)  
(30,713) 
Outstanding balance, end of year
 
328,180  
340,570 
(e)  
Share-based compensation
Year ended December 31,
2024
2023
Stock options
$ 
2,739 $ 
1,574 
Performance share unit plan
 
3,605  
4,093 
Deferred share unit plan
 
1,086  
1,756 
Restricted share unit plan
 
2,553  
1,795 
Share-based compensation(1)
$ 
9,983 $ 
9,218 
(1) For the year ended December 31, 2024, the Company recorded $5.3 million (year ended December 31, 2023 -  $3.4 million) of share-
based compensation in contributed surplus, and the remaining share-based compensation was recorded in liabilities. 
(f)  Net (Loss) Income per Share
Year ended December 31,
2024
2023
Weighted average number of common shares outstanding
 
103,106,305 
 
94,111,548 
Dilutive effects of:
Stock options
 
— 
 
444,216 
Share units
 
— 
 
340,570 
Weighted average number of diluted common shares outstanding(1)
 
103,106,305 
 
94,896,334 
Net (loss) income attributable to owners of the Company
$ 
(68,475) $ 
92,804 
Basic net (loss) income per share
$ 
(0.66) $ 
0.99 
Diluted net (loss) income per share
$ 
(0.66) $ 
0.98 
(1)  Weighted average number of diluted common shares outstanding for the year ended December 31, 2024 excluded 1,734,607 (year 
ended December 31, 2023 - 646,932) stock options and 328,180 share units (year ended December 31, 2023 - nil) that were anti-
dilutive. 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

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Annual Report | 2024
16.  Revenue
Year ended December 31,
2024
2023
Copper
Export sales
$ 
342,774 $ 
300,383 
Sales within Brazil
 
—  
24,303 
Adjustments on provisional sales(1)
 
182  
(4,083) 
 
342,956  
320,603 
Gold
Sales
 
108,993  
89,795 
Amortization of deferred revenue(2)
 
18,310  
17,082 
$ 
127,303 $ 
106,877 
$ 
470,259 $ 
427,480 
(1) Adjustments on provisional sales include both pricing and quantity adjustments. Provisionally priced sales to the Company's 
international customers are settled with a final sales price between zero to one month (December 31, 2023 - zero to four months) after 
shipment takes place and, therefore, are exposed to commodity price changes.
(2) During the year ended December 31, 2024, the Company delivered 15,917 ounces of gold (year ended December 31, 2023 - 14,005 
ounces of gold) under a precious metals purchase agreement with Royal Gold (note 12) for average cash consideration of $473 per 
ounce (year ended December 31, 2023 - $386  per ounces) and recognized $18.3 million in amortization of deferred revenue (year 
ended December 31, 2023  -  $17.1 million). Amortization of deferred revenue during the year ended December 31, 2024 is net of 
$3.0 million (December 31, 2023 - $2.5 million) related to change in estimate attributed to advances received and change in life-of-
mine production estimates. 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

95
Annual Report | 2024
17.  Cost of Sales
Year ended December 31,
2024
2023
Materials
$ 
44,212 $ 
44,361 
Salaries and benefits
 
61,348  
60,609 
Contracted services
 
42,967  
32,911 
Maintenance costs
 
31,974  
31,025 
Utilities
 
12,484  
13,574 
Other costs
 
1,131  
1,185 
Change in inventory (excluding depreciation and depletion)
 
(1,250)  
(5,269) 
Cost of production
 
192,866  
178,396 
Sales expense and others
 
11,107  
10,718 
Depreciation and depletion
 
83,287  
86,065 
Change in inventory (depreciation and depletion)
 
2,446  
(4,544) 
$ 
289,706 $ 
270,635 
18.  General and Administrative Expenses
Year ended December 31,
2024
2023
Accounting and legal
$ 
1,922 $ 
2,049 
Amortization and depreciation
 
1,677  
1,503 
Office and administration
 
10,052  
8,970 
Salaries and consulting fees
 
28,683  
29,281 
Incentive payments
 
4,330  
6,887 
Other
 
2,934  
3,739 
$ 
49,598 $ 
52,429 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

96
Annual Report | 2024
19. Finance Expense
Year ended December 31,
2024
2023
Interest on loans and borrowings(1)
$ 
— 
$ 
11,299 
Accretion of deferred revenue
 
2,501  
3,032 
Accretion of provision for rehabilitation and closure costs
 
2,339  
2,703 
Interest on lease liabilities
 
1,814  
1,477 
Other finance expenses(2)
 
10,435  
7,311 
$ 
17,089 $ 
25,822 
(1)
During the year ended December 31, 2024, the Company capitalized $36.5 million (year ended 2023 - $17.0 million) of borrowing 
costs to projects in progress. 
(2)   Other finance expenses during the year ended December 31, 2024 included $8.0 million (year ended 2023 - $4.1 million provision) 
credit loss provision on certain accounts receivable (see Note 23). 
20. Foreign Exchange (Loss) Gain
The following foreign exchange gains (losses) arise as a result of balances and transactions in the Company’s 
Brazilian subsidiaries that are denominated in currencies other than the Brazilian Reals (BRL$), which is their 
functional currency.
Year ended December 31,
2024
2023
Foreign exchange (loss) gain on USD denominated debt in Brazil
$ 
(129,351) $ 
18,695 
Realized foreign exchange (loss) gain on derivative contracts (note 23)  
(8,206)  
11,417 
Unrealized foreign exchange (loss) gain on derivative contracts (note 
23)
 
(30,808)  
7,582 
Foreign exchange gain (loss) on other financial assets and liabilities
 
3,357  
(3,082) 
$ 
(165,008) $ 
34,612 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

97
Annual Report | 2024
21. Income Taxes 
(a) Reconciliation of income taxes
A reconciliation of the income tax expense to the amount calculated using the Company’s combined Canadian 
federal and provincial statutory income tax rate of 27% (2023 – 27%) is as follows:
Year ended December 31,
2024
2023
Net (loss) income in the year before tax
$ 
(75,441) 
$ 
112,351 
Tax rate
 27 %
 27 %
Income tax (recovery) expense at statutory rate
$ 
(20,369) 
$ 
30,335 
Tax effect of:
Difference in tax rate of foreign jurisdictions
 
6,964 
 
(11,318) 
Non-taxable items
 
(1,601) 
 
(10,740) 
Change in temporary differences not previously recognized
 
(4,667) 
 
2,153 
Change in tax law
 
2,999 
 
— 
Withholding taxes and other
 
9,023 
 
7,617 
Income tax (recovery) expense
$ 
(7,651) 
$ 
18,047 
 
Year ended December 31,
2024
2023
Current income tax:
Relating to current income tax charge
$ 
17,662 $ 
15,992 
Deferred income tax:
Relating to origination and reversal of temporary differences
 
(25,313)  
2,055 
Income tax (recovery) expense recognized in net income
$ 
(7,651) $ 
18,047 
Income tax (recovery) expense recognized in other comprehensive 
income
 
(833)  
1,262 
Total income tax (recovery) expense
$ 
(8,484) $ 
19,309 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

98
Annual Report | 2024
(b) Deferred income tax assets (liabilities)
The general movement in the deferred income tax assets (liabilities) is as follows:
Year ended December 31,
2024
2023
At the beginning of the year
$ 
(9,548) $ 
(6,229) 
Deferred income tax recovery (expense)
 
25,313  
(2,055) 
Income tax (recovery) expense recognized in OCI
 
833  
(1,262) 
Foreign exchange
 
61  
(2) 
At the end of the year
$ 
16,659 $ 
(9,548) 
Recognized deferred tax and assets and liabilities consist of the following:
December 31, 
2024
December 31, 
2023
Deferred tax assets:
Non-capital losses
$ 
18,078 $ 
5,655 
Foreign exchange
 
20,590  
— 
Financing fees and other
 
5,216  
8,563 
Mine closure and rehabilitation provision
 
3,338  
4,070 
Lease liabilities
 
2,528  
2,805 
 
49,750  
21,093 
Deferred tax liabilities:
Mineral properties, plant and equipment
 
(22,735)  
(15,566) 
Loans and borrowings
 
(8,560)  
(10,045) 
Foreign exchange
 
— 
 
(3,083) 
Loans and borrowings
 
(1,796)  
(1,947) 
 
(33,091)  
(30,641) 
Net deferred income tax assets (liabilities)
$ 
16,659 $ 
(9,548) 
Presentation on Consolidated Statements of Financial Position
Deferred tax assets
$ 
16,659 $ 
1,315 
Deferred tax liabilities
 
— 
 
(10,863) 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

99
Annual Report | 2024
Deferred tax assets of $31.4 million (December 31, 2023 - $35.1 million) have not been recognized for the 
following deductible temporary differences as it is not probable that the benefits of these temporary differences 
will be realized:
Year ended December 31, 2024
Year ended December 31, 2023
Brazil
Canada
Brazil
Canada
Mineral properties, plant and equipment
$ 
31,236 $ 
873 $ 
39,959 $ 
1,150 
Non-capital losses
 
— 
 
40,831  
—  
74,238 
Other
 
— 
 
67,770  
—  
33,731 
$ 
31,236 $ 
109,474 $ 
39,959 $ 
109,119 
The Company has loss carry forwards in Canada totaling $103.4 million (December 31, 2023 - $100.2 million) 
which may be carried forward for 20 years to offset future taxable income, which expire between 2036 and 
2044. Additionally, the Company has loss carry forwards in Brazil totaling $6.8 million (December 31, 2023 - 
nil) which do not expire and can be offset against future taxable income subject to 30%  limitation of the current 
period taxable income.
22. Related Party Transactions
Key management personnel consist of the Company’s directors and officers. The remuneration of key 
management personnel during the year was as follows:
Year ended December 31,
2024
2023
Salaries and short-term benefits(1)
$ 
9,737 $ 
10,746 
Share-based payments(2)
 
8,280  
8,156 
$ 
18,017 $ 
18,902 
(1) Includes annual salary and short-term incentives or bonuses earned in the year.
(2) Includes PSUs, RSUs, DSUs and stock option grants.
23. Financial Instruments 
Fair value
Fair values of financial assets and liabilities are determined based on available market information and valuation 
methodologies appropriate to each situation. Judgments are required in the interpretation of the market data to 
produce the most appropriate fair value estimates. The use of different market information and/or evaluation 
methodologies may have a material effect on the fair value amounts.
As at December 31, 2024, derivatives were measured at fair value based on Level 2 inputs.  
The carrying values of cash and cash equivalents, short-term investments, accounts receivable, deposits, and 
accounts payable and accrued liabilities approximate their fair values due to their short terms to maturity or the 
discount rate used approximates to the contractual interest rate. At December 31, 2024, the carrying value of 
loans and borrowings, including accrued interest, was $602.2 million while the fair value is approximately 
$585.2 million. At December 31, 2024, the carrying value of notes receivable, including accrued interest, was  
$12.0 million which approximates its fair value.
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

100
Annual Report | 2024
Credit risk 
Credit risk is the risk of financial loss to the Company if a customer or counterparty to a financial instrument fails 
to meet its contractual obligations and arises principally from the Company’s receivables from customers. The 
carrying amount of the financial assets below represents the maximum credit risk exposure as at December 31, 
2024 and December 31, 2023:
December 31, 
2024
December 31, 
2023
Cash and cash equivalents
$ 
50,402 $ 
111,738 
Accounts receivable
 
18,399  
5,710 
Derivatives
 
— 
 
11,254 
Note receivable
 
12,009  
17,413 
Deposits and other assets
 
4,961  
9,484 
$ 
85,771 $ 
155,599 
The Company invests cash and cash equivalents with financial institutions that are financially sound based on 
their credit rating. 
The Company’s exposure to credit risk associated with accounts receivable is influenced mainly by the individual 
characteristics of each customer. 
In 2022, one of the Company's customers in Brazil, Paranapanema S/A ("PMA"), filed for bankruptcy protection. 
As a preferred supplier to PMA, the Company had a note receivable arrangement with PMA, which was 
excluded from the judicial recovery process and provides the Company with certain judicial guarantees. 
According to the note receivable arrangement, repayment was structured over 24 monthly installments 
beginning in March 2024, with an annual interest rate equivalent to Brazil's CDI rate of approximately 11.65%. 
At December 31, 2024, PMA is in default of the agreement and the gross amount of accounts and note 
receivable from PMA was $20.7 million (December 31, 2023 - $25.2 million). Accordingly, the note receivable is 
considered credit impaired, and the Company increased the expected credit loss provision by $8.0 million in the 
year ended December 31, 2024 (provision of $4.1  million for the year ended December 31, 2023). After 
adjusting for credit loss provision and present value discount of $13.1  million (December 31, 2023 - 
$7.7 million), the book value of the PMA note receivable at December 31, 2024 was $7.6 million (December 31, 
2023 - $17.4 million.), of which $3.9 million (December 31, 2023 - $8.3 million) was included in other curret 
assets.
Liquidity risk 
Liquidity risk is the risk associated with the difficulties that the Company may have meeting the obligations 
associated with financial liabilities that are settled with cash payments or with another financial asset. The 
Company's approach to liquidity management is to ensure as much as possible that sufficient liquidity exists to 
meet their maturity obligations on the expiration dates, under normal and stressful conditions, without causing 
unacceptable losses or with risk of undermining the normal operation of the Company. 
The table below shows the Company's maturity of non-derivative financial liabilities on December 31, 2024:
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

101
Annual Report | 2024
Non-derivative financial liabilities
Carrying 
value
Contractual 
cash flows
Up to 
12 months
1 - 2 
years
3 - 5 
years
More than 
5 years
Loans and borrowings (including 
interest)
$ 602,189 
$ 
791,475 
$ 
74,251 
$ 105,989 
$ 611,235 
$ 
— 
Accounts payable and accrued 
liabilities
 
95,120 
 
95,120 
 
95,120 
 
— 
 
— 
 
— 
Other non-current liabilities
 
5,825 
 
5,825 
 
— 
 
4,771 
 
666 
 
388 
Leases
 
17,885 
 
19,431 
 
11,995 
 
6,398 
 
1,038 
 
— 
Total
$ 721,019 
$ 
911,851 
$ 181,366 
$ 117,158 
$ 612,939 
$ 
388 
The Company also has a derivative financial liability for foreign exchange collar contracts whose notional 
amounts and maturity information are disclosed below under foreign exchange currency risk.
Market risk 
Market risk is the risk of loss that may arise from changes in market factors such as interest rates, foreign 
exchange rates, and commodity prices. The purpose of market risk management is to manage and control 
exposures to market risks, within acceptable parameters, while optimizing return.
The Company may use derivatives, including options, forwards and swap contracts, to manage market risks.  
The Company's outstanding derivative instruments as of December 31, 2024 are as follows:
Contract Description
Notional 
Amount
Denomination
Weighted 
average floor
Weighted 
average cap / 
forward price
Maturities
Foreign exchange collar (i)
$390.0 million
USD/BRL
5.43
6.49
January 2025 - 
December 2025
Gold collar (iii)
30,000 ounces
$ / oz
$2,200
$3,425
January 2025 - 
December 2025
(i) Foreign exchange currency risk 
The Company’s subsidiaries in Brazil are exposed to exchange risks primarily related to the US dollar. In order to 
minimize currency mismatches, the Company monitors its cash flow projections considering future sales 
expectations indexed to US dollar variation in relation to the cash requirement to settle the existing financings.
The Company's exposure to foreign exchange currency risk at December 31, 2024 relates to $60.0 million 
(December 31, 2023 – $17.2 million) in loans and borrowings of MCSA denominated in US dollars and Euros. In 
addition, the Company is also exposed to foreign exchange currency risk at December 31, 2024 on $513.6 
million of intercompany loan balances (December 31, 2023 - $342.2 million) which have contractual repayment 
terms. Strengthening (weakening) in the Brazilian Real against the US dollar at December 31, 2024 by 10% and 
20%, would have decreased (increased) pre-tax net loss by $57.3 million and $114.6 million, respectively. This 
analysis is based on the foreign currency exchange variation rate that the Company considered to be reasonably 
possible at the end of the year and excluding the impact of the derivatives below. The analysis assumes that all 
other variables, especially interest rates, are held constant.
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

102
Annual Report | 2024
The Company may use certain foreign exchange derivatives, including collars and forward contracts, to manage 
its foreign exchange risks. At December 31, 2024, the aggregate fair value of the Company's foreign exchange 
derivatives was a net liability of $17.9 million (December 31, 2023 - asset of $11.3 million), which is reflected in 
current portion of derivatives liabilities. The fair values of foreign exchange contracts were determined based on 
option pricing models, forward foreign exchange rates, and information provided by the counter party. 
The change in fair value of foreign exchange derivatives was an unrealized loss of $30.8 million for the year 
ended December 31, 2024 (a gain of $7.6 million for the year ended December 31, 2023) and has been 
recognized in foreign exchange (loss) gain. In addition, during the year ended December 31, 2024, the Company 
recognized a realized loss of $8.2 million (realized gain of $11.4 million for the year ended December 31, 2023) 
related to the settlement of foreign currency forward collar contracts.
(ii) Interest rate risk 
The Company is principally exposed to the variation in interest rates on loans and borrowings with variable rates 
of interest. Management reduces interest rate risk exposure by entering into loans and borrowings with fixed 
rates of interest or by entering into derivative instruments that fix the ultimate interest rate paid.
The Company is principally exposed to interest rate risk through its Senior Credit Facility and Brazilian Real 
denominated bank loans. Based on the Company’s net exposure at December 31, 2024, a 1% change in the 
variable rates would not materially impact its pre-tax annual net income.
(iii) Price risk 
The Company may use derivatives, including forward contracts, collars and swap contracts, to manage 
commodity price risks.   
At December 31, 2024, the Company has entered into zero-cost gold collar contracts on 2,500 ounces of gold 
per month from January 2025 to December 2025, representing approximately 50% of its estimated production 
volumes for the period. As of December 31, 2024, the fair value of these contracts was a net liability of $0.1 
million (December 31, 2023 - nil). The fair value of gold collar contracts was determined based on option pricing 
models, forward gold price, and information provided by counter party. At December 31, 2024, the Company 
does not have any outstanding copper collar contracts (December 31, 2023 - liability of $0.6 million).  
During the year ended December 31, 2024, the Company recognized an unrealized gain of $0.2 million 
(unrealized loss of $0.1 million for the year ended December 31, 2023) and a realized loss of $2.6 million 
(realized loss of $1.8 million for the year ended December 31, 2023)  in relation to its commodity derivatives in 
in other income or loss. 
At December 31, 2024, the Company had provisionally priced sales that are exposed to commodity price 
changes (note 16). Based on the Company’s net exposure at December 31, 2024, a 10% change in the price of 
copper would have changed pre-tax net income (loss) by $6.1 million. 
24. Capital Management 
The Company’s objectives when managing capital are to safeguard the Company’s ability to continue as a going 
concern in order to pursue the development and production of its mine properties and to maintain a flexible 
capital structure for its projects for the benefit of its stakeholders. 
The Company's capital consists of items included in shareholders’ equity, debt facilities net of cash and cash 
equivalents.
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

103
Annual Report | 2024
Management reviews the capital structure on a regular basis to ensure that the above-noted objectives are met. 
The Company manages the capital structure and makes adjustments to it considering changes in the economic 
conditions and the risk characteristics of the underlying assets. To maintain or adjust the capital structure, the 
Company may attempt to issue new loans and borrowings, common shares, or acquire or dispose of assets.
Certain loan agreements contain operating and financial covenants that could restrict the ability of the Company 
and its subsidiaries. MCSA, Ero Gold, and NX Gold, to, among other things, incur additional indebtedness 
needed to fund its respective operations, pay dividends or make other distributions, make investments, create 
liens, sell or transfer assets or enter into transactions with affiliates. There are no other restrictions or externally 
imposed capital requirements of the Company.
25. Supplemental Cash Flow Information
Year ended December 31,
Net change in non-cash working capital items:
2024
2023
Accounts receivable
$ 
(13,985) $ 
6,918 
Inventories
 
(12,586)  
(5,269) 
Other assets
 
(17,636)  
(11,694) 
Accounts payable and accrued liabilities
 
(4,137)  
1,673 
Deferred revenue
 
22,654  
2,440 
$ 
(25,690) $ 
(5,932) 
Non-cash investing and financing activities:
Additions to property, plant and equipment by leases
$ 
18,012 $ 
20,019 
Non-cash (decrease) increase in accounts payable in relation to 
capital expenditures
 
(4,848)  
28,851 
Change in mineral properties, plant and equipment from change in 
estimates for provision for rehabilitation and closure costs
 
7,890  
3,119 
26. Commitment and Contingencies
(a) Capital commitments
As at December 31, 2024, the Company has capital commitments, which is net of advances to suppliers, of 
$51.2 million through contracts and purchase orders which are expected to be incurred over a six-year period. In 
the normal course of operations, the Company may also enter into long-term contracts which can be cancelled 
with certain agreed customary notice periods without material penalties. 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

104
Annual Report | 2024
(b) Contingencies
Due to the size, complexity and nature of the Company’s operations, it is subject to various investigations, 
claims, legal and tax proceedings covering matters that arise in the ordinary course of business. Based on the 
opinion of the Company's legal advisers, management considers provisions for its outstanding and pending legal 
claims to be adequate. 
Each of these matters is subject to various uncertainties and it is possible that some of these matters may 
resolve unfavourably to the Company. In the opinion of management, based upon the information currently 
available, none of these matters are expected to have a material adverse effect on the results of operations or 
financial conditions of the Company. In the event that management’s estimate of the future resolution of these 
matters changes, the Company will recognize the effect of these changes in its consolidated financial 
statements in the period in which such changes occur. As at December 31, 2024, the Company has recognized a 
provision related to certain matters of $1.6 million (December 31, 2023 - $1.6 million).
There are five administrative claims (2023 – five claims) filed by the Nacional Mining Agency regarding alleged 
differences in the calculation of certain sales taxes on mining revenue by MCSA. As at December 31, 2024, the 
estimated impact of the claims is $6.6 million (December 31, 2023 - $4.8 million). The Company, based on the 
opinion of its legal advisors, does not believe such claims will result in a probable cash outflow and as such no 
provision is recognized.
27.  Subsequent Events
Subsequent to December 31, 2024, the Company amended its Senior Credit Facility ("Amended Senior Credit 
Facility") to increase the limit from $150.0 million to $200.0 million and to extend the maturity from December 
2026 to December 2028. The interest rate and commitment fee on the Amended Senior Credit Facility were 
reduced to sliding scales of SOFR plus 2.00% to 4.25%, and 0.45% to 0.96%, respectively. Additionally, the 
total leverage ratio was replaced with net leverage ratio for the purposes of determining financial covenants and 
interest rates. 
Ero Copper Corp.
Notes to Consolidated Financial Statements
(Tabular amounts in thousands of US Dollars, except share and per share amounts)

Xavantina Operations Aerial View, 
Mato Grosso, Brazil

Ero Copper Corp
Suite 1050 – 625 Howe St
Vancouver, BC V6C 2T6 Canada
t: +1 604 449 9244
info@erocopper.com
WWW.EROCOPPER.COM
TSX: ERO NYSE: ERO