Endeavour Silver : ESG (endeavour silver 2024 esg report 250609)

‌Operational Growth & Sustained Success‌

INTRODUCTION

SUSTAINABILITY

PEOPLE

PLANET BUSINESS ENDEAVOUR SILVER SUSTAINABILITY REPORT 2024

CONTENTS
Introduction		Planet
2024 Highlights	3	Carbon Footprint	33
Message from the CEO	4	Tailings & Waste Management	38
About Our Business	5	Water & Biodiversity Stewardship	42
About this Report	7	Business
Sustainability at Endeavour		Governance & Risk Management	47
Our Approach to Sustainability	9	Ethical Culture	50
Listening to Our Stakeholders	12	Sustainable Supply Chain	54
Sustainability Scorecard 2022-2024	13
Our 2025 Priorities	15
People
Safety, Health & Wellness	17
Engaged & Inclusive Workforce	22
Thriving Communities	26

REPORTING HUB

This publication is part of our sustainability reporting suite. View related disclosures and past reports at our Sustainability Reporting Hub.

• 2024 ESG Performance Data

• GRI / SASB Index

• 2024 Tailings Disclosures

• Sustainability Strategy 2022-2024

• 2024 Modern Slavery Report

For a complete picture of our business activities, this report should be read in conjunction with our Annual Information Form, Management's

Discussion and Analysis, and Financial Statements.

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INTRODUCTION

SUSTAINABILITY

PEOPLE

PLANET BUSINESS ENDEAVOUR SILVER SUSTAINABILITY REPORT 2024

‌2024 Highlights

PEOPLE

1.77 reportable injury rate (RIR)

99% of our workforce in Mexico from within the country

49 average training hours per employee and contractor

US$1.1M in community investments

PLANET

0 significant environmental spills or incidents

88% water recycling and reuse rate in our operations, minimizing our use of fresh water

52,039 trees planted in reforestation projects, with an average survival rate of 72%

BUSINESS

38% women on Board of Directors

100% of the workforce completed training on our Code of Business Conduct and Ethics

95% of our procurement was from local and national suppliers in Mexico

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INTRODUCTION

SUSTAINABILITY

PEOPLE

PLANET BUSINESS ENDEAVOUR SILVER SUSTAINABILITY REPORT 2024

‌A Message from the CEO

Solid values and foundations anchor sustainable success. This has been demonstrated time and again throughout Endeavour's history, including in 2024. The accomplishments and initiatives outlined in this report demonstrate our dedication to sustainability, the responsible stewardship of our mines, and our impact on the communities where we live and work. For Endeavour, being sustainable is about striving to create longterm value, both for our business and for our stakeholders, including our workforce, the communities that host our operations, and

our shareholders. We aim to balance our economic growth with responsible governance, environmental and social practices, and to integrate the topics that matter most to our stakeholders into our decision process.

Over the past three years, our 2022-2024 Sustainability Strategy has guided our actions. We fully or majority achieved close to 80%

of the targets and measures we set out for ourselves through the strategy. For example, we strengthened our governance and risk

management practices, expanded training and development opportunities for our workforce as well as community members, and implemented new environmental initiatives to help us better manage, mitigate and track our impact on water, air, land and biodiversity.

As a mining company, Endeavour plays an important role in our host communities generating employment and significant

economic value through activities, taxes and royalties. I am also especially proud to note our community investments over the past three-year period reached $2.4 million, exceeding our

$2 million target. These investments supported local students and their education, community infrastructure projects and general economic development.

While the strategy's three-year timeframe has concluded, our sustainability agenda does not stop here. We have defined new sustainability priorities for 2025, outlined in the following pages, that will direct our efforts.

In closing, my heartfelt thanks to our entire team of employees and contractors for their dedication to Endeavour's success, and to all our stakeholders for your continued support. As we look ahead, I'm excited about the next chapter in Endeavour's journey - particularly as we bring the Terronera mine into production after years of rigorous planning, permitting and development. I believe our steady momentum, combined with our longstanding commitments to integrity, operational excellence and continuous improvement, lay a strong foundation for the years ahead.

Sincerely,

Dan Dickson

Chief Executive Officer & Director June 2025

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INTRODUCTION

SUSTAINABILITY

PEOPLE

PLANET BUSINESS ENDEAVOUR SILVER SUSTAINABILITY REPORT 2024

‌About Our Business

Our purpose is to be a leading silver producer that creates value for our stakeholders by discovering, developing and operating our mines in a sustainable way.

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exploration projects in Mexico, Chile and the United States

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producing mines (Guanaceví and Bolañitos)

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development project under construction (Terronera)

Established in 2004, Endeavour Silver Corp. is a Canadian mid-tier precious metals company with operations and projects in the Americas. In 2024, Endeavour had two producing mines (Guanaceví and Bolañitos) and a development project under construction (Terronera), all located in Mexico. In addition, we maintained a

portfolio of exploration projects in Mexico, Chile and the United States.

Our business strategy balances short-term profitability with long-term investments in exploration and development to extend our

mine lives and build new mines to drive future profitability. Rooted in our desire to create benefits for all our stakeholders, Endeavour

is committed to sustainable production and aims to responsibly explore and manage our properties. For us, it is about ensuring the success of our people, local communities and our business.

Headquartered in Vancouver, Canada, Endeavour Silver is listed on the NYSE:EXK and TSX:EDR.

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