Hecla Mining Company · NYSE:HL

Hecla Mining — Investor Presentation (March 2026)

69 slides from Hecla Mining's investor presentation, March 2026

1. Slide 1: March Update

   Largest Silver Producer in the U.S. and Canada MARCH UPDATE MARCH 2026 RESPONSIBLE. SAFE. INNOVATIVE.

2. Slide 2: Cautionary Statements

   Cautionary Statements Cautionary Statement Regarding Forward-Looking Statements, Including 2026 Outlook Qualified Person (QP) This presentation contains "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E Kurt D. Allen, MSc., CPG,

3. Slide 3: Hecla at a Glance

   Hecla at a Glance Company Overview Ownership Overview2 Headquarters Coeur d’Alene, Idaho Stock Ticker NYSE: HL Common Shares Outstanding 670.3M1 Market Capitalization $14.8B2 Cash Position $241.5M1 Long-Term Debt $261.9M1 US$225M Revolving Credit Facility Capacity (+ US$75M Accordion) -1 Dividend (p

4. Slide 4: North America's Premier Silver Producer

   North America’s Premier Silver Producer Silver Legacy  Oldest precious metals mining company on the NYSE with 135 years of history Best Jurisdictions  All operations located in the U.S. and Canada Silver Focused  Peer leading silver exposure in revenue and reserves Reserve Dominance  Average res

5. Slide 5: Sale of Hecla Quebec Inc.

   Subsequent to Year-End: Hecla Announces Sale of Hecla Quebec Inc. Transaction to further solidify Hecla as the premier silver company Deal Highlights  Hecla entered into a definitive agreement to sell its subsidiary that owns Proposed Transaction Casa Berardi operation in Quebec, Canada to Orezone

6. Slide 6: Our Asset Portfolio: Low Risk Jurisdictions

   Our Asset Portfolio: Low Risk Jurisdictions 2024 U.S. Silver Production Yukon Connaught, Dawson, Yukon Rackla, Mayo, Yukon Keno Hill, Mayo, Yukon Hecla, 37% Alaska Other, Greens Creek, Admiralty Island, Alaska 63% Idaho Silver Valley / Star, Wallace, Idaho Lucky Friday, Mullan, Idaho 2024 U.S. Silve

7. Slide 7: Industry Leading Reserve Mine Life

   Why Invest in Hecla? Industry Leading Reserve Mine Life 18 Mines sorted by highest to 18 lowest 2025 Gross Profit Colored - Primary Silver Mines Jacobina left to right Uncolored - Primary Gold Mines 16 15 14 14 Lucky Friday 14 13 Hecla Avg Reserve Mine Life: 13.3 Years Rochester La Colarada 12 Keno

8. Slide 8: High Grades, Long Reserve Lives, Best Jurisdictions

   Why Invest in Hecla? High Grades, Long Reserve Lives, Best Jurisdictions 20 Rochester Lucky Friday Keno 16 La Colorada Hill Hecla’s silver portfolio has Reserve Mine Life (Years) 12 Greens Creek an unparalleled combination of high 8 grades, long reserve lives, Palmerejo Los Gatos and best jurisdicti

9. Slide 9: Peer Leading Silver Exposure

   Why Invest in Hecla? Peer Leading Silver Exposure Exposure to Silver Substantial silver revenue 100% exposure Percent of Reserves Based in Silver HL 4Q25  Hecla (“HL”) derived ~59% of (Pro-Forma ex Casa Berardi) Q4 2025 revenue from silver, 75% and nearly 73% of Q4 revenues excluding Casa PAAS AG B

10. Slide 10: Expected Robust Free Cash Flow Generation

    Expected Robust Free Cash Flow Generation Projected 2026 Consolidated Free Cash Flow(2): ~$850M at $100/oz Silver and $5,500/oz Gold Projected 2026 Consolidated Free Cashflow Price Sensitivity to Silver and Gold $1,000 Full-year 2026 projections include Casa Berardi for only Q1 2026 due to its pendi

11. Slide 11: Medium-Term Outlook Potential: Moz Silver Producer

    Medium-Term Outlook Potential: 20 Moz Silver Producer Significant silver production growth potential over medium-term 25 Silver Production Growth $13.06 Potential: 20 Moz $11.76 $11.28  17 Moz in 2025 20  15.1-16.5 Moz in 2026  Project pipeline supports 15 potential of 20 Moz over Silver Producti

12. Slide 12: Midas: Medium-Term Production Growth & Optionality

    Midas: Medium-Term Production Growth & Optionality Leveraging existing infrastructure for capital-efficient growth Strategic Value Creation Midas Mill Complex  2025 successful exploration program has identified high- grade gold intercepts  Infrastructure and permitting advantage  Permitted ±1,200

13. Slide 13: Low-cost Profile Silver Assets

    Low-cost Profile Silver Assets 2025 Actual AISC(4): Hecla Is Strongly Positioned at the Lower End of the Silver Cost Curve $/oz AISC Silver Peers* Hecla Silver Production (Kt) * Peers include Coeur Mining, Fortuna, Fresnillo, Pan American Silver, First Majestic Silver, Endeavour Silver 13

14. Slide 14: Capital Allocation: Disciplined Strategy Driving Value Creation

    Capital Allocation: Disciplined Strategy Driving Value Creation Safety & Balance Sheet Sustaining & Strategic Shareholder Environmental Exploration Strength/ Growth Capital Investments Returns Excellence Deleveraging Conceptual Asymmetric Potentially - 10 - 15% 5-7% - Returns Potential Significant 

15. Slide 15: Safety – The Foundation to Success

    Safety – The Foundation to Success Operational excellence starts here Hecla: 10 Year Total Reportable Injury Frequency History (TRIFR) Operational Achievements & Goals 5.0  2024: Re-commitment to Safety 4.5 Values – Safety Day and roll-out of Safety 365: Work Safe. Home Safe. 4.0 2025 TRIFR 1.69 3.

16. Slide 16: Our Operations

    OUR OPERATIONS Silver mines are in the best third of cost curve RESPONSIBLE. SAFE. INNOVATIVE. 16

17. Slide 17: Greens Creek: Cornerstone Mine, Foundation Of Our Future

    Greens Creek: Cornerstone Mine, Foundation Of Our Future Metals Location Reserve Mine Plan 2024 Economic Impact Ag, Au, Pb, Zn, Cu Alaska 12 Years $266M Ag Reserves & Resources Cumulative Free Cash Flow(2) (Billions $) As of December 31, 2025 3.0 2.4 2.0 1.0 P&P : 106 Moz 1.0 - M&I : 89 Moz 2006 200

18. Slide 18: Potential Value Extraction From Tails

    Potential Value Extraction From Tails Tailings as of December 2025:  10.4 million DST of tailings consisting of  50 Moz of Silver (5 oz/ton or 165 grams/tonne (”gpt”))  567 Koz of Gold (~2 gpt)  309 Mlbs of Zinc Metals in tailings  203 Mlbs of Lead represent ~$6.8B in  27 Mlbs of Copper gross

19. Slide 19: Lucky Friday: 2nd Cornerstone Mine

    Lucky Friday: 2nd Cornerstone Mine Metals Location Reserve Mine Plan 2024 Economic Impact Ag, Pb, Zn Idaho 15 Years $171M Ag Reserves & Resources Silver Production 47* (Moz) by Decade* ~2x 44* As of December 31, 2025 (Projected) 29 29 26 27 23 P&P : 72 Moz 19 M&I : 41 Moz Inferred : 26 Moz 1961-1969

20. Slide 20: Underhand Closed Bench (UCB) Method

    Underhand Closed Bench (UCB) Method Large-scale blasting proactively helps manage seismic risk and increases throughput More innovative: uses Safer: miners work advanced drilling and blasting below engineered techniques to fragment the backfill and above a de- mineralized ore zone stressed zone More

21. Slide 21: Lucky Friday Major Projects & Business Improvement Initiatives

    Lucky Friday Major Projects & Business Improvement Initiatives Lucky Friday Projects  Surface Cooling Project on track for mid-2026 completion  Pond 5 tailings project advancing, expanding tailings capacity out to 2044  Further (medium to long-term) operational upside potential from:  Switching

22. Slide 22: Keno Hill: Largest Silver Producer In Canada

    Keno Hill: Largest Silver Producer In Canada Metals Location Reserve Mine Plan 2024 Economic Impact Ag, Pb, Zn Yukon 13 Years $179M Ag Reserves & Resources Projected Free Cash Flow(2) at 440 Tons Per Day As of December 31, 2025 $400 Silver price $/oz 2024-2039 $30 $50 $75 $100 P&P : 53 Moz 12% 47% 8

23. Slide 23: Path to 440 Tons Per Day

    Path to 440 Tons Per Day Key Consistent 440 tons per day Requirements 2025 Mill Throughput Infrastructure  Reliable power supply  Water treatment plant (designs and upgrades) Silver production of 3.02 Moz at Requirements  Dry stack tailing facility capacity  Mobile maintenance facilities 297 ton

24. Slide 24: Financial Review

    FINANCIAL REVIEW RESPONSIBLE. SAFE. INNOVATIVE. 24

25. Slide 25: 2025 Year in Review

    2025 Year in Review Balance sheet transformation. Operational excellence. Cash flow excellence. ROIC leadership. 2025 Guidance Overview 2025 Performance Review Actual vs. December 31, December 31, 2025 Actual Guidance Guidance 2025 2024 Silver Gross Leverage Production 17.0 16.2 – 17.0 0.4x 1.6x Rat

26. Slide 26: Q4 2025 Financial Highlights and Capital Allocation

    Q4 2025 Financial Highlights and Capital Allocation Silver accounts for nearly 75% Q4 Revenues of Q4 revenues 1.6 $439M* 7% excluding Casa $670 1.4 5% Berardi** Net Debt to 1.2 Adjusted EBITDA $506 1 Silver accounts ($ millions) Adjusted 0.8 for 59% of Q4 29% EBITDA (1) 59% 0.6 revenues 0.3x Net lev

27. Slide 27: Q4 2025 Financial Highlights

    Q4 2025 Financial Highlights Cash and Cash Equivalents – Last Twelve Months Net Debt – Last Twelve Months in millions $ in millions $ 241.6 545.0 Silver accounts for 59% of Q4 revenues 268.2 26.9 143.8 34.2 FY 2024 FY 2025 Q1 2025 Q2 2025 Q3 2025 Q4 2025 Q4 Revenues By Operation Ag Au Zn Pb 11% 9% 3

28. Slide 28: Exploration

    EXPLORATION RESPONSIBLE. SAFE. INNOVATIVE. 28

29. Slide 29: Strategic Value Creation through Exploration

    Strategic Value Creation through Exploration 2026 $55 Million investment an all-time record – represents 4.5% of projected revenue Near Mine: $24 Million Nevada Growth: $16 Million Early-Stage/Generative: $10 Million  Extends mine life  Midas, Aurora, and Hollister  Silver Valley and Generative e

30. Slide 30: Greens Creek – Extending Mineralization Underground While Advancing Surface Exploration

    Greens Creek – Extending Mineralization Underground While Advancing Surface Exploration UG Exploration Results Underground Surface  Gallagher mineralization extended 550’ feet down Hawk Areas Target Inlet Prospective Rocks Cover Rocks Young Bay plunge from existing resource Hecla Claims Dock Cover

31. Slide 31: Keno Hill Bermingham Discovery – High-Grade Intercepts Indicate New Ore Shoot

    Keno Hill Bermingham Discovery – High-Grade Intercepts Indicate New Ore Shoot: Continuing the Trend of Growth in 2025  Cluster of high-grade intercepts 500’ down-plunge from reserve.  District Exploration:  Initial interpretation suggests shallow-plunging geometry  Significant exploration potent

32. Slide 32: Value Surfacing Opportunities in Nevada

    Value Surfacing Opportunities in Nevada Significant exploration potential, Minimal regulatory hurdles, Existing infrastructure Midas  Fully permitted mill with tailings capacity  2.2 Moz gold, 27.0 Moz silver produced historically at 0.5 oz/ton gold equivalent Hollister  Historic production of 0.

33. Slide 33: Nevada Midas: Breakthrough Discoveries with Visible Gold and High-Grade Results

    Nevada Midas: Breakthrough Discoveries with Visible Gold and High-Grade Results Two new very strong early results from Pogo and Sinter target areas  Pogo & Sinter Offset Targets: High-grade Midas Milling Potential Midas District Targets gold intersections at both targets in 2025 with follow-up 75 M

34. Slide 34: Nevada Midas – Continued High-Grade Results at Sinter Offset

    Nevada Midas – Continued High-Grade Results at Sinter Offset Step-out along strike 720 feet intersects 0.46 oz/ton gold over 6.1 feet Sinter Offset Drilling A SINTER VEIN LONGITUDINAL SECTION A`  DMC-462 - Initial drillhole intercepted a 1- (Looking NE) foot vein within a broader (21 feet) zone of

35. Slide 35: Nevada Aurora - Final Exploration Permit Record of Decision Received

    Nevada Aurora - Final Exploration Permit Record of Decision Received First step in unlocking the exploration potential of one of the highest-grade districts in Nevada Second Step: Significant drilling of our high-priority targets in 2026, with second quarter target start  Historic production averag

36. Slide 36: 2026 Guidance

    2026 GUIDANCE RESPONSIBLE. SAFE. INNOVATIVE. 36

37. Slide 37: 2026 Guidance: Strong Margins Maintained

    2026 Guidance: Strong Margins Maintained Silver Production (Moz) Gold Production (Koz) Greens Creek 7.5 – 8.1 51.0 – 55.0 2026 Production Lucky Friday 4.7 – 5.2 N/A Outlook Keno Hill 2.9 – 3.2 N/A 2026 Total 15.1 – 16.5 51.0 – 55.0 Casa Berardi (Q1 2026)* N/A 14.0 – 17.0 Cash cost, after by-product

38. Slide 38: Silver Market

    SILVER MARKET RESPONSIBLE. SAFE. INNOVATIVE. 38

39. Slide 39: The World's Growing Needs For Silver

    The World’s Growing Needs For Silver Five distinct periods of silver demand, three that Despite decrease in photographic demand, total are strengthening demand increased 30%, or 269Moz due to the increase in industrial and investment demand  Monetary by governments (2000 BC to 1936 AD)  Photograph

40. Slide 40: Silver Supply And Demand

    Silver Supply And Demand 2024 SILVER DEMAND: 1,164 Moz 2024 SILVER SUPPLY: 1,015 Moz Other 3% Jewelry and Recycling Silverware Photo Mine Prod. - Other voltaics 19% Primary Silver 23% 24% 29% 23% Brazing Alloys Investment 8% Electronics Mine Prod. - Silver as a by- 16% and Electrical product 39% Ind

41. Slide 41: Silver Deficit Is Expected To Continue

    Silver Deficit Is Expected To Continue Moz $/oz $38 1,200 $34 700 1,284 1,199 1,164 1,148 $30 1,102 993 973 1,001 1,006 929 200 $26 $22 300 1,025 1,014 1,016 974 1,023 1,035 998 1,015 1,031 1,057 $18 800 $14 Demand Supply Net Market Position Silver Price 1,300 $10 2016 2017 2018 2019 2020 2021 2022

42. Slide 42: Solar Will Be The Largest Source Of Electricity

    Solar Will Be The Largest Source Of Electricity 1 Gigawatt (GW) of solar capacity requires 0.45Moz of silver U.S. Electricity Generation Sources: 2000-2050 2022 Solar projected to be 33% of total Gigawatt history | projections U.S. energy generation by 2050 6,000 5,000 4,000 Solar 3,000 Wind 2,000 N

43. Slide 43: More Efficient PV Technologies Use More Silver

    More Efficient Photovoltaic (PV) Technologies Use More Silver And Are Gaining Market Share Silver Content in PV Technologies Market Share of PV Technologies Mg Silver/Watt Higher silver using technologies are gaining 22 market share PV Installations Newer, more efficient Gigawatts PERC TopCon HJT Ot

44. Slide 44: Sustainability

    SUSTAINABILITY Our sustainable Corporate Governance responsibilities RESPONSIBLE. SAFE. INNOVATIVE. 44

45. Slide 45: Sustainability Rating Agency Scores: Significant Improvements Since 2019

    Sustainability Rating Agency Scores: Significant Improvements Since 2019 Agency Progression in ESG Scores  Overall Score increased from 53rd 38 40 39 percentile to 77th percentile  Environmental Score increased to 24 83rd percentile 15 13  Social Score increased to 70th percentile 2019 2020 2021

46. Slide 46: ESG Performance And Ratings

    ESG Performance And Ratings Ranking: 40 Score: 32.1 (0 best, 100 worst) 76th Percentile Industry 56/107, 52nd percentile Subindustry 18/25, 71st percentile Rating: A Rating: C Score: 6.3 Environment: 5 (1 best, 10 worst) Social: 6 (1 best, 10 worst) Governance: 3 (1 lower, 10 higher) 46

47. Slide 47: Hecla Is Among The Safest Mining Companies

    Hecla Is Among The Safest Mining Companies Implemented NMA’s CORE Safety standards in 2012, became industry leader All-Injury Frequency Rate Hecla’s 1.69 rate has seen a 6.06 72% reduction since 2012 5.35 5.41 4.57 3.42 2.76 2.00 1.86 1.61 1.69 1.22 1.45 1.22 1.45 2012 2013 2014 2015 2016 2017 2018

48. Slide 48: Committed To Our Communities

    See disclaimer Committed To Our Communities about 2026 guidance on slide 3 Total economic impact in 2024 Largest private employer within the communities we operate, jobs and $1B+ benefits that last a lifetime Hecla Corporate  Total direct economic impact of over $1 $130M $2M billion Greens Creek Sa

49. Slide 49: End Notes

    End Notes 1. Net debt to adjusted EBITDA is a non-GAAP measurement, a reconciliation of adjusted EBITDA and net debt to the closest GAAP measurements of net income (loss) and debt can be found in the appendix. It is an important measure for management to measure relative indebtedness and the ability

50. Slide 50: GAAP Reconciliations

    GAAP RECONCILIATIONS RESPONSIBLE. SAFE. INNOVATIVE. 50

51. Slide 51: Adjusted EBITDA

    Adjusted EBITDA Reconciliation of Net Income (GAAP) to Adjusted EBITDA (non-GAAP) Last Twelve Months 2025 2024 Dollars in thousands (USD) Net income $ 321,712 $ 35,802 Interest expense 41,581 49,834 Income and mining tax expense 157,467 30,414 Depreciation, depletion and amortization 165,570 190,471

52. Slide 52: Cash Cost And AISC Reconciliation To GAAP

    Cash Cost And AISC Reconciliation To GAAP Silver Total Cost of Sales (GAAP) to Cash Cost, Before By-product Credits and Cash Cost, After By-product Credits (non-GAAP) and All-In Sustaining Costs, Before By-product Credits, per Ounce and All-In Sustaining Costs, After By-product Credits, per Ounce (n

53. Slide 53: Cash Cost And AISC Reconciliation To GAAP: Greens Creek

    Cash Cost And AISC Reconciliation To GAAP Greens Creek Total Cost of Sales (GAAP) to Cash Cost, Before By-product Credits and Cash Cost, After By-product Credits (non-GAAP) and All-In Sustaining Costs, Before By-product Credits, per Ounce and All-In Sustaining Costs, After By-product Credits, per Ou

54. Slide 54: Cash Cost And AISC Reconciliation To GAAP: Lucky Friday

    Cash Cost And AISC Reconciliation To GAAP Lucky Friday Total Cost of Sales (GAAP) to Cash Cost, Before By-product Credits and Cash Cost, After By-product Credits (non-GAAP) and All-In Sustaining Costs, Before By-product Credits, per Ounce and All-In Sustaining Costs, After By-product Credits, per Ou

55. Slide 55: Cash Cost And AISC Reconciliation To GAAP: Casa Berardi

    Cash Cost And AISC Reconciliation To GAAP Casa Berardi Total Cost of Sales (GAAP) to Cash Cost, Before By-product Credits and Cash Cost, After By-product Credits (non-GAAP) and All-In Sustaining Costs, Before By-product Credits, per Ounce and All-In Sustaining Costs, After By-product Credits, per Ou

56. Slide 56: Free Cash Flow (Non-GAAP) Reconciliation

    Free Cash Flow (Non-GAAP) Reconciliation Q4 2025 Reconciliation of cash provided by operating activities (GAAP) to Free Cash Flow (non-GAAP) for All Operations Greens Creek Lucky Friday Keno Hill Casa Berardi in millions Cash provided by operating activities 101.9 56.9 33.0 50.2 Additions to propert

57. Slide 57: Free Cash Flow (Non-GAAP) Reconciliation

    Free Cash Flow (Non-GAAP) Reconciliation Reconciliation of cash provided by operating activities (GAAP) to Free Cash Flow (non-GAAP) 2025 2024 Q1-2025 Q2-2025 Q3-2025 Q4-2025 Dollars in millions (USD) Cash provided by operating activities 562.6 218.3 35.7 161.8 148.0 217.1 Less: Capital additions (2

58. Slide 58: Cash Cost And AISC Reconciliation to GAAP

    Cash Cost And AISC Reconciliation to GAAP Reconciliation of 2024 cash costs and all-in sustaining costs (“AISC”) to total cost of sales (GAAP) Total Cost of Sales (GAAP) to Cash Cost, Before By-product Credits and Cash Cost, After By-product Credits (non-GAAP) and All-In Sustaining Costs, Before By-

59. Slide 59: Mineral Reserves and Resources

    MINERAL RESERVES AND RESOURCES RESPONSIBLE. SAFE. INNOVATIVE. 59

60. Slide 60: Mineral Reserves – 12/31/2025 (1/4)

    Mineral Reserves – 12/31/2025(1) (1/4) Proven Reserves(1) Silver Gold Lead Zinc Silver Gold Lead Zinc Asset Location Ownership Tons (000) (oz/ton) (oz/ton) % % (000 oz) (000 oz) Tons Tons Greens 100.0% 13 23.93 0.120 3.0 7.8 309 1.5 390 1,000 Creek (2,3) Lucky 100.0% 4,747 11.82 - 7.5 3.8 56,096 - 3

61. Slide 61: Mineral Reserves – 12/31/2025 (2/4)

    Mineral Reserves – 12/31/2025(1) (2/4) Probable Reserves(7) Silver Gold Lead Zinc Silver Gold Lead Zinc Asset Location Ownership Tons (000) (oz/ton) (oz/ton) % % (000 oz) (000 oz) Tons Tons Greens 100.0% 10,166 10.41 0.083 2.3 6.3 105,788 841 237,730 637,130 Creek (2,3) Lucky 100.0% 1,636 9.47 - 6.0

62. Slide 62: Mineral Reserves – 12/31/2025 (3/4)

    Mineral Reserves – 12/31/2025(1) (3/4) Proven and Probable Reserves Silver Gold Lead Zinc Silver Gold Lead Zinc Asset Location Ownership Tons (000) (oz/ton) (oz/ton) % % (000 oz) (000 oz) Tons Tons Greens 100.0% 10,179 10.42 0.083 2.3 6.3 106,097 842 238,120 638,130 Creek (2,3) Lucky 100.0% 6,383 11

63. Slide 63: Mineral Reserves – 12/31/2025 (4/4)

    Mineral Reserves – 12/31/2025(1) (4/4) 1. The term “reserve” means an estimate of tonnage and grade or quality of indicated and measured mineral resources that, in the opinion of the qualified person, can be the basis of an economically viable project. More specifically, it is the economically minea

64. Slide 64: Mineral Resources - 12/31/2025 (1/6)

    Mineral Resources - 12/31/2025(8) (1/6) Measured Resources(9) Silver Gold Lead Zinc Copper Silver Gold Lead Zinc Copper Asset Location Ownership Tons (000) (oz/ton) (oz/ton) % % % (000 oz) (000 oz) (Tons) (Tons) (Tons) Greens Creek(12,13) 100.0% - - - - - - - - - - - Lucky Friday(12,14) 100.0% 1,806

65. Slide 65: Mineral Resources - 12/31/2025 (2/6)

    Mineral Resources - 12/31/2025(8) (2/6) Indicated Resources(10) Silver Gold Lead Zinc Copper Silver Gold Lead Zinc Copper Asset Location Ownership Tons (000) (oz/ton) (oz/ton) % % % (000 oz) (000 oz) (Tons) (Tons) (Tons) Greens Creek(12,13) 100.0% 5,844 15.17 0.112 3.4 8.9 - 88,655 653 200,430 522,5

66. Slide 66: Mineral Resources - 12/31/2025 (3/6)

    Mineral Resources - 12/31/2025(8) (3/6) Measured & Indicated Resources Silver Gold Lead Zinc Copper Silver Gold Lead Zinc Copper Asset Location Ownership Tons (000) (oz/ton) (oz/ton) % % % (000 oz) (000 oz) (Tons) (Tons) (Tons) Greens Creek(12,13) 100.0% 5,844 15.17 0.112 3.4 8.9 - 88,655 653 200,43

67. Slide 67: Mineral Resources - 12/31/2025 (4/6)

    Mineral Resources - 12/31/2025(8) (4/6) Inferred Resources(11) Silver Gold Lead Zinc Copper Silver Gold Lead Zinc Copper Asset Location Ownership Tons (000) (oz/ton) (oz/ton) % % % (000 oz) (000 oz) (Tons) (Tons) (Tons) Greens Creek(12,13) 100.0% 1,431 16.29 0.107 3.2 8.0 - 23,314 153 45,720 113,910

68. Slide 68: Mineral Resources - 12/31/2025 (5/6)

    Mineral Resources - 12/31/2025(8) (5/6) Note: All estimates are in-situ except for the proven reserves at Greens Creek which are in surface stockpiles. Mineral resources are exclusive of reserves. 8. The term "mineral resources" means a concentration or occurrence of material of economic interest in

69. Slide 69: Mineral Resources - 12/31/2025 (6/6)

    Mineral Resources - 12/31/2025(8) (6/6) 17. Mineral resources for underground zones at San Sebastian reported at a cut-off grade of $163.29/ton ($180/tonne), open pit resources reported at a cut-off grade of $74.84/ton ($82.50/tonne); Metallurgical recoveries based on grade dependent recovery curves

Hecla Mining Company — Investor Presentation (March 2026) on 6ix