Figure 1.1 — Double Materiality Assessment Results
Scatter plot showing ESG topics by financial materiality and impact materiality. The x-axis is
Financial Materiality and the y-axis is Impact Materiality. Quadrants are divided at financial
materiality 9 and impact materiality 8.

Safe and Healthy Working Conditions: financial materiality 12, impact materiality 12.95. Equity,
Diversity, Inclusion: 8, 10.6. Human Rights in the Workplace: 6, 9.5. Public Safety and Emergency
Services: 6, 12. Human Rights and Security in Host Communities: 9, 10.6. Community Investment and
Community Relations: 15, 12.2. Geopolitical Interests: 16, 1. Indigenous Relations: 12, 12.4. Business
Practices and Ethics: 9, 13.8. Cybersecurity and Data Protection: 12, 9.2. Process Residuals and Other
Wastes: 10, 13.8. Biodiversity and Land Use: 9, 15.4. Water Availability: 12, 11.9. Water Management:
10, 15.4. Air Quality and Pollutants: 2, 11.9. Climate Change and Climate Mitigation: 16, 12.7. Energy
Management: 12, 5.8.

Figure 2.1 — 2025 Whistleblower Reports Received by Category
Pie chart showing report categories as percentages. HR Related: 45%; Health & Safety: 5%; Unrelated to
Alamos: 15%; Test by Auditor: 15%; Other: 20%.

Figure 2.2 — 2025 Whistleblower Activity by Status
Bar chart showing whistleblower report counts. Reports Received: 20; Reports Escalated: 14; Reports
Requiring Investigation: 13; Investigations Completed by Year-End: 8; Investigations Ongoing at Year-
End: 5.

Figure 3.1 — Gender Identity
Pie chart showing respondent gender identity. Man: 78.3%; Woman: 19%; Transgender: 0.3%; Non-Binary:
0.2%; Two-Spirit: 0.1%; Gender identity not specified: 0.1%; Prefer not to answer: 2%.

Figure 3.2 — Racial or Ethnic Identity
Pie chart showing respondent racial or ethnic identity. White: 42.8%; Latin American/Hispanic: 27.5%;
Indigenous Peoples: 7.8%; South Asian: 1.5%; Racial or ethnic identity is not listed above: 1.5%;
Black: 1.3%; East Asian: 1.1%; Southeast Asian: 0.4%; West Asian: 0.3%; Mixed race: 8.4%; Prefer not to
answer: 7.5%.

Figure 3.3 — Persons with Disabilities
Pie chart showing whether respondents identify as a person with a disability. No: 92.9%; Yes: 3%;
Prefer not to answer: 4%.

Figure 3.4 — Sexual Orientation
Pie chart showing respondent sexual orientation. Heterosexual: 84.8%; Bisexual: 0.9%; Lesbian: 0.4%;
Queer: 0.3%; Gay: 0.2%; Pansexual: 0.1%; Asexual: 0.1%; Sexual orientation not listed: 2.8%; Prefer not
to answer: 10.2%.

Figure 3.5 — First Language
Bar chart answering “What language(s) did you first learn at home as a child and still understand
today?” English: 560; Spanish: 488; French: 203; Another language: 79; Prefer not to answer: 22.

Figure 3.6 — Primary Language
Bar chart answering “What language(s) do you speak most often at home?” English: 600; Spanish: 480;
French: 132; Another language: 56; Prefer not to answer: 21.

Figure 4.1 — Community Grievances Filed by Category
Pie chart showing community grievances filed by category. Environmental: 3; Health & Safety: 3;
Business Practices: 1; Community Lifestyle & Property: 4.

Figure 4.2 — Community Grievances by Status
Bar chart showing community grievances by status. Grievances Filed: 11; Grievances Requiring
Investigation: 11; Remediation Plans Implemented: 6; Grievances Resolved Within 30 Days: 9.

Figure 5.1 — Energy Consumption (GJ)
Doughnut chart for Young-Davidson energy consumption. Petroleum Diesel (Transport): 156,990, 11.42%;
Biodiesel: 0, 0%; Gasoline: 2,662, 0.19%; Propane Gas: 0, 0%; Naphtha: 6,356, 0.46%; Compressed Natural
Gas: 228,060, 16.6%; Purchased Electricity: 978,672, 71.22%; Petroleum Diesel (Generated Electricity):
1,420, 0.1%.

Doughnut chart for Island Gold District energy consumption. Petroleum Diesel (Transport): 984,247,
38.78%; Biodiesel: 65, 0%; Gasoline: 34,093, 1.34%; Propane Gas: 153,696, 6.06%; Naphtha: 275, 0.01%;
Compressed Natural Gas: 894,856, 35.26%; Purchased Electricity: 439,107, 17.3%; Petroleum Diesel
(Generated Electricity): 31,713, 1.25%.

Doughnut chart for Mulatos energy consumption. Petroleum Diesel (Transport): 439,872, 63.12%;
Biodiesel: 0, 0%; Gasoline: 22,343, 3.21%; Propane Gas: 86,483, 12.41%; Naphtha: 0, 0%; Compressed
Natural Gas: 0, 0%; Purchased Electricity: 141,945, 20.37%; Petroleum Diesel (Generated Electricity):
6,240, 0.9%.

Figure 5.2 — Company-Wide Water Interactions
Line chart showing company-wide water interactions in ML. Withdrawn: 2023: 6,177; 2024: 10,385; 2025:
13,520. Discharged: 2023: 3,282; 2024: 4,787; 2025: 6,815. Treated: 2023: 2,718; 2024: 4,150; 2025:
6,506. Consumed: 2023: 2,895; 2024: 5,598; 2025: 6,705. Recycled/Reused: 2023: 17,461; 2024: 17,065;
2025: 19,188. Used: 2023: 20,365; 2024: 22,663; 2025: 25,893.

Figure 5.3 — Company-Wide Waste Generation vs Waste Recycling/Reuse (tonnes)
Combined bar and line chart comparing waste generated with waste recycled/reused. Total Waste Recycled/
Reused: 2023: 2,405,362; 2024: 3,367,735; 2025: 8,449,276. Total Waste Generated: 2023: 27,536,798;
2024: 29,785,405; 2025: 36,240,077.

Figure 6.4 — Tailings Governance Structure
Governance diagram showing Board of Directors overseeing the Technical & Sustainability Committee.
Executive oversees the Steering Committee. Corporate & Site Level includes the ITRB, Engineer of Record
and Working Group. The Working Group connects to Island Gold District, Young-Davidson Mine, Mulatos
District, Lynn Lake Project and Corporate Sustainability.

Figure 7.2 — 30% Emission Intensity Reduction: Decarbonisation Pathway
Line chart showing emission intensity pathway by year. Alamos’ Projected Emission Pathway: 2021:
0.461598097; 2022: 0.503483572; 2023: 0.433998814; 2024: 0.374471151; 2025: 0.420383153; 2026:
0.391758568; 2027: 0.296382529; 2028: 0.221516322; 2029: 0.206334384; 2030: 0.209814323. 30% Intensity
Reduction: 2021: 0.461598097; 2022: 0.44620942; 2023: 0.430820742; 2024: 0.415432065; 2025:
0.400043387; 2026: 0.38465471; 2027: 0.369266032; 2028: 0.353877355; 2029: 0.338488677; 2030: 0.3231.

Figure 7.3 — Combined Scope 1 & 2 GHG Emissions Annual Comparison by Site
Horizontal bar chart showing combined Scope 1 and 2 GHG emissions in tCO₂e. For 2024: Young-Davidson:
37,470; Island Gold District: 67,291; Mulatos District: 75,741. For 2025: Young-Davidson: 43,053;
Island Gold District: 139,492; Mulatos District: 62,033.

Figure 7.4 — 2025 Emission Intensities per Oz
Bar chart showing emission intensity in tCO₂e/oz Au. Gold Industry Average: 0.79; Alamos Total: 0.45;
Young-Davidson: 0.28; Island Gold District: 0.56; Mulatos District: 0.44.

Figure 7.5 — Scope 3 Emissions by Sites (tCO₂e)
Doughnut chart showing Scope 3 emissions by site. Young-Davidson: 117,505; Island Gold District:
220,962; Mulatos District: 83,246; Lynn Lake: 15,802; Toronto Head Office: 13,579; Qiqavik: 1,009.

Figure 7.6 — Summary of Scope 3 GHG Emissions by Category
Stacked horizontal bar chart showing Scope 3 GHG emissions by category and site in tCO₂e. Young-
Davidson: Purchased Goods and Services: 69,787.84176; Capital Goods: 31,426.67992; Fuel and Energy
Related Activities: 11,243.13528; Upstream Transportation and Distribution: 970.9684553; Investments:
0; Employee Commuting: 945.0239526; Processing of Sold Products: 1,503.026217; Waste Generated in
Operations: 709.8974667; End-of-Life Treatment: 710.020949; Business Travel: 40.14052708; Downstream
Transportation & Distribution: 43.40368508; Upstream Leased Assets: 124.5035211; Use of Sold Products:
0; Downstream Leased Assets: 0; Franchises: 0.

Island Gold Complex: Purchased Goods and Services: 87,736.28054; Capital Goods: 89,050.67443; Fuel and
Energy Related Activities: 29,149.70278; Upstream Transportation and Distribution: 1,539.428842;
Investments: 0; Employee Commuting: 3,782.813597; Processing of Sold Products: 1,987.130461; Waste
Generated in Operations: 5,666.816615; End-of-Life Treatment: 819.1302888; Business Travel:
64.84344402; Downstream Transportation & Distribution: 52.86615996; Upstream Leased Assets:
1,112.314203; Use of Sold Products: 0; Downstream Leased Assets: 0; Franchises: 0.

Mulatos District: Purchased Goods and Services: 62,579.53391; Capital Goods: 2,426.915351; Fuel and
Energy Related Activities: 13,549.72737; Upstream Transportation and Distribution: 171.9328501;
Investments: 0; Employee Commuting: 563.120507; Processing of Sold Products: 2,153.683483; Waste
Generated in Operations: 192.6720161; End-of-Life Treatment: 1,213.888206; Business Travel:
186.5999538; Downstream Transportation & Distribution: 69.61615209; Upstream Leased Assets:
138.0231911; Use of Sold Products: 0; Downstream Leased Assets: 0; Franchises: 0.

Lynn Lake: Purchased Goods and Services: 6,238.059258; Capital Goods: 9,103.830909; Fuel and Energy
Related Activities: 0; Upstream Transportation and Distribution: 27.40136526; Investments: 0; Employee
Commuting: 316.176129; Processing of Sold Products: 0; Waste Generated in Operations: 0; End-of-Life
Treatment: 0; Business Travel: 109.3697703; Downstream Transportation & Distribution: 0; Upstream
Leased Assets: 7.280910565; Use of Sold Products: 0; Downstream Leased Assets: 0; Franchises: 0.

Qiqavik: Purchased Goods and Services: 688.8492463; Capital Goods: 0; Fuel and Energy Related
Activities: 0; Upstream Transportation and Distribution: 274.133917; Investments: 0; Employee
Commuting: 0; Processing of Sold Products: 0; Waste Generated in Operations: 0; End-of-Life Treatment:
0; Business Travel: 32.7203861; Downstream Transportation & Distribution: 0; Upstream Leased Assets:
12.97748005; Use of Sold Products: 0; Downstream Leased Assets: 0; Franchises: 0.

Toronto Head Office: Purchased Goods and Services: 794.2734925; Capital Goods: 70.90550887; Fuel and
Energy Related Activities: 0; Upstream Transportation and Distribution: 0; Investments: 11,678.99913;
Employee Commuting: 0; Processing of Sold Products: 0; Waste Generated in Operations: 0; End-of-Life
Treatment: 0; Business Travel: 1,009.062174; Downstream Transportation & Distribution: 0; Upstream
Leased Assets: 25.60213673; Use of Sold Products: 0; Downstream Leased Assets: 0; Franchises: 0.