EXHIBIT 99.1

Item 1. Business

For information regarding the organization of our business segments and our significant customers, see Note 5 of Notes to Consolidated Financial Statements.

Information set forth in Items 1A and 2 below are incorporated by reference into this Item 1.

Introduction

Hecla Mining Company and its subsidiaries have provided precious and base metals to the U.S. and the world since 1891 (in this report, “we” or “our” or “us” refers to Hecla Mining Company and our affiliates and subsidiaries, unless the context requires otherwise). We discover, acquire, and develop mines and other mineral interests and produce and market (i) concentrates containing silver, gold, lead, zinc, and copper, and (ii) unrefined doré containing silver and gold. In doing so, we intend to manage our business activities in a safe, environmentally responsible and cost-effective manner.

The silver, zinc, precious metals concentrates, we produce are sold to custom smelters, metal traders, and third-party processors, and the unrefined doré we produce is sold to refiners or further refined before sale of the metals to traders. We are organized and managed in three segments that encompass our operating mines and significant assets being Greens Creek, Lucky Friday, and Keno Hill.

Our current business strategy is to focus our financial and human resources in the following areas:

On March 25, 2026, we completed the sale of our Hecla Quebec Inc. ("Hecla Quebec") subsidiary which owned the Casa Berardi mine to Orezone Gold Corporation ("Orezone") for total consideration with a fair value of $385.7 million ($602.2 million on an undiscounted basis) comprised of the following:

Orezone has a set-off right to reduce the unpaid balance of the Deferred Cash Consideration by 50% of the amount by which the financial assurance required by the Quebec government under the updated Casa Berardi closure plan exceeds $150 million, excluding increases caused by Orezone's post-closing actions. Our current estimate of that excess of $11.5 million has been included in determining the fair value of the Deferred Cash Consideration.

The sale of Hecla Quebec represents disciplined portfolio optimization and focuses capital allocation on our silver assets, which we believe to represent significant growth and value creation opportunities. We have increased our revenue exposure to silver and we are focused on operating in what we view to be the most favorable jurisdictions. We used the cash proceeds from the transaction for debt reduction and balance sheet strengthening, enhancing our financial flexibility and capacity to invest in strategic growth investments.

We determined that the sale of Hecla Quebec represents a strategic shift that has a major effect on our operations and financial results and therefore, the Casa Berardi operation is no longer a reportable segment and its financial results are reflected in the Company’s audited consolidated financial statements as a discontinued operation for all periods presented. Unless otherwise specified, the discussion of financial results within Item 7. Management’s Discussion and Analysis of Consolidated Financial Condition and Results of Operations ("MD&A"), as well as the Consolidated Financial Statements and Notes will focus on our continuing operations, in relation to the respective comparative periods which have been recast to reflect the continuing operations of our business.

Metals Prices

Our operating results are substantially dependent upon the prices of silver, gold, lead, and zinc, which can fluctuate widely. The volatility of such prices is illustrated in the following table, which sets forth our average realized prices and the high, low, and average daily closing market prices for silver, gold, lead, zinc, and copper over the last three years. The sources for the market prices are the London Market Fixing prices from the London Bullion Market Association for silver and gold and the Cash Official prices from the London Metals Exchange for lead, zinc, and copper.

The prices of the metals we produce are affected by numerous factors beyond our control. See Item 1A. Risk Factors – A substantial or extended decline in metals prices would have a material adverse effect on us for information on a number of the factors that can impact prices of the metals we produce. In both 2025 and 2024, our realized average prices for all metals we sold, except lead,

were higher compared to 2024 and 2023, respectively. We are unable to predict fluctuations in prices for metals and have limited control over the timing of our concentrate shipments which also impacts our realized prices. However, we utilize financially-settled forward contracts and financially-settled zero cost collars ("Collars") for the metals we produce with the objective of managing the exposure to changes in prices of those metals contained in our concentrate shipments between the time of sale and final settlement. In addition, at times we utilize financially-settled forward contracts to manage the exposure to changes in prices of zinc and lead contained in our forecasted future concentrate shipments, and Collars and put options to protect gross margin for silver and gold contained in forecasted concentrate or dore shipments. See Note 11 of Notes to Consolidated Financial Statements for more information on our base and precious metal forward contract programs.

A comprehensive discussion of our financial results for the years ended December 31, 2025, 2024, and 2023, individual operation performance and other significant items can be found in Item 7. Management’s Discussion and Analysis of Consolidated Financial Condition and Results of Operations, as well as the Consolidated Financial Statements and Notes thereto.

Products and Segments

Our segments are differentiated by geographic region located in North America. We produce silver, zinc, and precious metals flotation concentrates at Greens Creek and silver and zinc flotation concentrates at Lucky Friday, each of which we sell to custom smelters and metal traders. The flotation concentrates produced at Greens Creek and Lucky Friday contain payable silver, zinc, and lead, and at Greens Creek they also contain payable gold and at times copper. At Greens Creek, we also produce gravity concentrate containing payable silver, gold, and lead. Unrefined bullion (doré) is produced from the gravity concentrate by a third-party processor, and shipped to a refiner before sale of the metals to precious metal traders. Keno Hill is currently in ramp-up and producing silver and precious metal flotation concentrates, but has yet to meet our definition of commercial production. Payable metals are those included in our products which we are paid for by smelters, metal traders, and refiners. Our segments as of December 31, 2025 included:

The Casa Berardi operations located in the Abitibi region of northwestern Quebec, Canada were also considered a segment prior to January 2026. The Casa Berardi operations were 100% owned by our former subsidiary Hecla Quebec and had been in production since late 2006. Following the disposal of Hecla Quebec on March 25, 2026, the results of Casa Berardi are reported as a discontinued operation for all periods presented.

The contributions to our total metals sales by our significant operations in 2025 were 57.6% from Greens Creek, 28.8% from Lucky Friday, and 13.6% from Keno Hill.

Governmental Regulation

The following is a summary of governmental regulation compliance areas which we believe are significant to our business and may have a material effect on our consolidated financial statements, earnings and/or competitive position.

Health and Safety

We are subject to the regulations of the Mine Safety and Health Administration (“MSHA”) in the United States, the Commission of Labor Standards, Pay Equity and Occupational Health and Safety in Quebec, Workers' Safety and Compensation Board in the Yukon and the Mexico Ministry of Economy and Mining, and work with these agencies to address issues outlined in any investigations and inspections and continue to evaluate our safety practices. We strive to achieve excellent mine safety and health performance, and attempt to implement reasonable best practices with respect to mine safety and emergency preparedness. Achieving and maintaining compliance with regulations is challenging and may increase our operating costs. See Human Capital - Health and Safety below and Item 1A. Risk Factors – We face substantial governmental regulation, including in the United States the Mine Safety and Health Act, various environmental laws and regulations and the 1872 Mining Law.

Environmental

Our operations are subject to various environmental laws and regulations at the federal and state/provincial/territorial level. Compliance with environmental regulations, and litigation based on environmental laws and regulations, involves significant costs and can threaten existing operations or constrain expansion opportunities. For example, since acquiring the Keno Hill mine in September 2022, the site has experienced permit exceedances involving the quality of water discharged into the environment. We are working to assess and improve the existing infrastructure and the environmental management system that was put in place by the previous owners. As part of this process, we have submitted plans to the Yukon Department of Energy, Mines and Resources to upgrade the water treatment plant at the Bermingham mine within our Keno Hill operations and in the interim have made other upgrades to water treatment at the site. See Note 17 of Notes to Consolidated Financial Statements.

Keno Hill is located in a region of the Yukon Territory where extensive historical mining activity occurred. The mining claims and rights that comprise our Keno Hill mine are owned by two of our indirect, wholly-owned subsidiaries, Alexco Keno Hill Mining Company and Elsa Reclamation & Development Company Ltd. (“ERDC”). ERDC and Alexco are parties to the Amended and Restated Subsidiary Agreement (“ARSA”) dated July 18, 2013, among them and Her Majesty the Queen in right of Canada (“Canada”) which addresses the pre-existing environmental condition and the environmental care and maintenance and reclamation of the historical Keno Hill site. Under the ARSA and related documents, ERDC, as a paid contractor for the Federal Government of Canada, is responsible for the development and eventual implementation of the district wide reclamation and closure plan (“Reclamation Plan”) which addresses the historic environmental liabilities of the district from past mining activities pre-dating Hecla’s (and Alexco's) acquisition of the Keno Hill project, as well as for carrying out care and maintenance at various locations within the historical Keno Hill site until the Reclamation Plan is implemented. Hecla’s predecessor, Alexco, previously deposited $10 million Canadian dollars ("CAD") in a trust which funds ERDC’s maximum contribution toward implementing the Reclamation Plan, and agreed to a 1.5% net smelter royalty capped at $4.0 million CAD, with the cap now reached as of December 31, 2025. ERDC receives agreed-to commercial contractor rates when retained by Canada to provide environmental services in the historical Keno Hill site outside the scope of care and maintenance and closure and reclamation planning under the ARSA (in the latter case, for which ERDC receives an annual fee of $900,000 CAD from Canada, adjustable for material changes in scope). The potential liabilities associated with the pre-existing environmental conditions at Keno Hill are indemnified by Canada under the terms and conditions of the ARSA, subject to the requirement for ERDC to develop, permit, and implement the Reclamation Plan, or if Hecla and Canada agree to transfer portions of the historical area to active mining operations within the Keno Hill unit, then such indemnification ceases to the extent of such transferred area. Completing the Reclamation Plan is expected to take approximately 4 more years and is currently estimated to cost approximately $294 million CAD over that time, for which we expect ERDC to be reimbursed for all material costs incurred. However, we are at risk for any variance in timing between expending funds by ERDC and reimbursement by Canada, as well as for any disputed or otherwise non-reimbursed costs (for example if ERDC were to act outside of the scope of the ARSA). In addition, ERDC is responsible for sharing with Canada (i) under certain circumstances, care and maintenance costs pending implementation of the Reclamation Plan, (ii) detailed design and engineering costs to support the Reclamation Plan and (iii) under certain circumstances, post active reclamation costs (i.e. in the event Hecla has brought a historical area with pre-existing environmental conditions into active operations at the Keno Hill unit), which, in each case and in the aggregate, we do not anticipate will have a material impact on our financial results as a whole.

Mine closure and reclamation regulations impose substantial costs on our operations and include requirements that we provide financial assurance supporting those obligations. We currently have $206.3 million of financial assurances, primarily in the form of surety bonds, for anticipated company-wide reclamation. We anticipate approximately $13.4 million in expenditures in 2026 for environmental permit compliance and idle property management. The projected remaining cost for reclamation at the site is included in our accrued reclamation and closure costs liability. See Item 1A. Risk Factors – We face substantial governmental regulation, including in the United States the Mine Safety and Health Act, various environmental laws and regulations and the 1872 Mining Law; Our operations are subject to complex, evolving and increasingly stringent environmental laws and regulations; Compliance with environmental regulations, and litigation based on such regulations, involves significant costs and can threaten existing operations or constrain expansion opportunities; Mine closure and reclamation regulations impose substantial costs on our operations and include requirements that we provide financial assurance supporting those obligations. These costs could significantly increase and we might not be able to provide financial assurance; Our environmental and asset retirement obligations may exceed the provisions we have made; and New federal and state laws, regulations and initiatives could impact our operations.

Licenses, Permits and Claims/Concessions

We are required to obtain various licenses and permits to operate our mines and conduct exploration and reclamation activities. We can only engage in exploration and mining operations in accordance with applicable permits. See Item 1A. Risk Factors – We are required to obtain governmental permits and other approvals in order to conduct mining operations and Legal challenges could prevent exploration projects from being developed or existing mines from future expansion.

In addition, our operations and exploration activities in Canada are conducted pursuant to claims granted by the host government, and are subject to claims renewal and minimum work commitment requirements, which are subject to certain political risks associated with foreign operations. See Item 1A. Risk Factors – Our foreign activities are subject to additional inherent risks, Our operations and

properties in Canada expose us to additional political risks and Certain of our mines and exploration properties are located on land that is or may become subject competing title claims and/or claims of cultural significance.

Taxes and Royalties

We are subject to various taxes and government royalties in the jurisdictions where we operate, including those specific to mining activities. These include: federal income taxes; state/provincial income taxes; county/city and bureau property taxes and sales and use tax in the U.S.; goods and services tax in Canada; mining-specific taxes in Alaska, Idaho, Nevada, and the Yukon; and mining royalties in Alaska, Nevada and Canada. Accrual and payment of taxes and accounting for deferred taxes can involve significant estimates and assumptions and can have a material impact on our consolidated financial statements. Tax rates and the calculations of taxes can change significantly and are influenced by changes in political administrations and other factors. See Item 1A. Risk Factors – Our accounting and other estimates may be imprecise; Our ability to recognize the benefits of deferred tax assets related to net operating loss carryforwards and other items is dependent, among other things, on generating taxable income; Our foreign activities are subject to additional inherent risks; and We face substantial governmental regulation, including in the United States the Mine Safety and Health Act, various environmental laws and regulations and the 1872 Mining Law. Also, see Note 8 of Notes to Consolidated Financial Statements for more information on income and mining taxes.

Physical Assets

Our business is capital intensive and requires ongoing capital investment for the replacement, modernization and expansion of equipment and facilities and to develop new mineral reserves. At December 31, 2025, the book value of our properties, plants, equipment and mine development, net of accumulated depreciation, was approximately $2.1 billion. For more information see Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations. We maintain insurance policies against property loss and business interruption. However, such insurance contains exclusions and limitations on coverage, and there can be no assurance that claims would be paid under such insurance policies in connection with a particular event. When we do experience insurable losses – such as with the fire at the Lucky Friday in August and September of 2023 – it can take a long period of time before we receive any or all insurance proceeds. See Item 1A. Risk Factors – Our operations may be adversely affected by risks and hazards associated with the mining industry that may not be fully covered by insurance.

Human Capital

As of December 31, 2025, we had approximately 1,378 employees, of which approximately 1,096 were employed in the United States and 282 in Canada. The vast majority of our employees are full-time. Approximately 325 of our employees at Lucky Friday were covered by a collective bargaining agreement.

The attraction, development and retention of people is critical to delivering our business strategy. Key areas of focus for us include:

Health and Safety

The safety and health of our employees is of paramount importance. Our goal is to achieve world-class safety and health performance by promoting a deeply rooted value-based culture of safety and utilizing technology and innovation to continually improve the safety at our operations. We know that employees' and contractors' safety awareness is fundamental to making our workplace as safe as possible. Therefore, we invest in training and workforce development programs that focus on safety first. All employees and contractors receive training that complies with or exceeds the applicable safety and health regulations as set by the governing body in the jurisdiction in which each operation is located. As part of our commitment to safety, we track a variety of safety performance indicators, including injuries, near misses, observations, and equipment damages. Our goal is to reduce safety incidents. Our Total Recordable Injury Frequency Rate (“TRIFR”) is calculated as the number of recordable injuries in the period multiplied by 200,000 hours and divided by the number of hours worked in the period. Company-wide, our TRIFR was 1.69 for 2025, a 13% reduction from 2024.

Compensation and Benefits

We are among the largest private-sector employers in the communities in which we operate providing a compensation and benefits package that attracts, motivates, and retains employees. In addition to competitive base wages, and incentive compensation, we offer retirement benefits, health insurance plans and paid time off.

Retention and Employee Development

We are committed to hiring talented people, developing effective leaders, providing an inclusive workplace and retaining a large portion of the workforce for long periods of time. The mining workforce of the future, like most industries, will see a continual change

in the jobs and skill sets required as we adopt new technologies and make our workplace safer and more efficient. We are also committed to helping employees update their skills. For example, we have long supported the Pathways to Mining Careers program, a career training partnership with the University of Alaska Southeast in Juneau. We also offer a reimbursement program to assist with educational expenses for employees who are interested in furthering their education. Advanced education can improve job performance and increase advancement opportunities for the employee, while providing flexibility to our company by increasing the employee’s knowledge base and skill set.

Typically, annual employee surveys are conducted to gauge employee concerns and morale. The results of the surveys, and any responsive measures, are shared with our Board of Directors. Strategic talent reviews and succession planning reviews are conducted periodically across all business areas, and our training programs are adapted accordingly. The Chief Executive Officer (“CEO”), senior level company leadership and the Board of Directors periodically review our top talent. Creating more opportunities for women and indigenous people are among our priorities for employee development. We also strive to maintain an inclusive workplace and provide periodic training to employees to help meet that goal. Our employees are required to abide by our Code of Conduct, which is provided to employees upon being hired and thereafter annually, and is available on our website, to promote the conduct of our business in a consistently legal and ethical manner. Among other provisions, the Code of Conduct reflects our policy and practice not to discriminate against any employee because of race, color, religion, national origin, sex, sexual orientation, gender identity or expression, age, or physical or other disability. We expect our leaders to set the example by being positive role models and good mentors for our employees.

Our head of Human Resources is responsible for developing and executing our human capital strategy. The position is an executive-level position to reflect the priority we place on utilizing our human capital resources to meet our business strategy.

Available Information

Hecla Mining Company is a Delaware corporation. Our current holding company structure dates from the incorporation of Hecla Mining Company in 2006 and the renaming of our subsidiary (previously Hecla Mining Company) as Hecla Limited. Our principal executive offices are located at 6500 N. Mineral Drive, Suite 200, Coeur d’Alene, Idaho 83815-9408. Our telephone number is (208) 769-4100. Our web site address is www.hecla.com. Information on our web site is not incorporated into this Annual Report on Form 10-K. We file our annual, quarterly and current reports and any amendments to these reports with the SEC, copies of which are available on our website or from the SEC free of charge (www.sec.gov). Our restated certificate of incorporation, bylaws, charters of our audit, compensation, and governance and social responsibility committees, as well as our Code of Ethics for the Chief Executive Officer and Senior Financial Officers and our Code of Conduct, are also available on our website. In addition, any amendments to our Code of Ethics or waivers granted to our directors and executive officers will be posted on our website. Each of these documents may be periodically revised, so you are encouraged to visit our website for any updated terms. We will provide copies of these materials to stockholders upon request using the above-listed contact information, directed to the attention of Investor Relations, or via e-mail request sent to hmc-info@hecla.com.

We routinely post important information for investors on our web site, www.hecla.com, in the “Investors” section. We also may use our web site as a means of disclosing material, non-public information and for complying with our disclosure obligations under Regulation FD. Accordingly, investors should monitor the Investors section of our web site, in addition to following our press releases, SEC filings, public conference calls, presentations and webcasts. The information contained on, or that may be accessed through, our web site is not incorporated by reference into, and is not a part of, this document.

Item 2. Properties

Note on SEC Mining Disclosure Rules

Information concerning our mining properties in this Annual Report on Form 10-K has been prepared in accordance with the requirements of subpart 1300 of SEC Regulation S-K. Subpart 1300 requires us to disclose our mineral resources, in addition to our mineral reserves, as of the end of our most recently completed fiscal year both in the aggregate and for each of our individually material mining properties.

You are cautioned that mineral resources do not have demonstrated economic value. Mineral resources are subject to further exploration and development, are subject to additional risks, and no assurance can be given that they will eventually convert to future reserves. Inferred Resources, in particular, have a great amount of uncertainty as to their existence and their economic and legal feasibility. Investors are cautioned not to assume that any part or all of the Inferred Resource exists or is economically or legally mineable. See Item 1A. Risk Factors.

Summary

The map below shows the locations of our operations and our exploration projects, as well as our corporate offices located in Coeur d’Alene, Idaho; Vancouver, British Columbia; Juneau, Alaska; Mullan, Idaho; and Whitehorse, Yukon.

The following table summarizes our aggregate metal quantities produced and sold for the last three years:

Hecla is the operator at all mines and exploration properties. Mineral processing plants and related facilities are part of the infrastructure at each operating mine.

The following table summarizes the in-situ mineral reserves for all properties as of December 31, 2025:

The following table summarizes the in-situ mineral resources (8) for all properties, exclusive of mineral reserves, as of December 31, 2025: