Skip to content
KStart free
AI InfrastructureDefenseQuantumAll studies →

GORO US Equity

Gold Resource CorpMaterials · Gold and Silver Ores · CIK 1160791 · FY ends Dec 31
$3.19
+0.19 (+6.33%)
USD · as of 2026-08-21 · marketstack

GORO · 10-K · period ended 2024-12-31

← all GORO documents
filed 2025-04-08 · EDGAR original ↗

Our rendering of the filing — original pagination and typography are not reproduced, and tables are reduced to their short label cells (the figures live on FA). Nothing is summarized: every line below is the filing's own text.

blocks 274873 of 2,807318k characters rendered

ITEM 1A.RISK FACTORS

The Company’s business, and the mining industry in general, is influenced by significant risks and uncertainties. These risks include those described below and may include additional risks and uncertainties not presently known or currently deemed immaterial. The Company’s business, financial condition, and results of operations could be materially adversely affected by any of these risks, and the trading price of the Company’s common stock could decline by virtue of these risks. These risks should be read in conjunction with the other information in this annual report on Form 10-K.

Financial Risks

There is substantial doubt about whether the Company can continue as a going concern.

At December 31, 2024, the Company’s aggregate cash and cash equivalents totaled approximately $1.6 million. As a result of challenges encountered in mining and processing at DDGM, the Company is not currently generating positive cash flow from its mining operations. The Company’s financial position and recent operating results, along with its inability to achieve its production estimates, raise substantial doubt about its ability to continue as a going concern. Failure to raise some form of long-term debt or additional equity capital will cause the Company to further increase its working capital decline, and the Company may be compelled to place the mine on “care and maintenance” status and cease operations until sufficient capital is available. Additionally, even if the Company does raise sufficient capital to support its operating expenses and generate revenues, there can be no assurances that the revenue will be sufficient to enable it to achieve a level where it generates profits and positive cash flows from operations.

The Company’s consolidated financial statements have been prepared assuming that the Company will continue as a going concern. The financial statements do not include any adjustments that might be necessary if the Company is unable to continue as a going concern. Such adjustments could be material.

The Company’s results of operations, cash flows, and the value of its properties are highly dependent on the market prices of gold, silver, and certain base metals, and these prices can be volatile.

The profitability of the Company’s mining operations and the value of its mining properties are directly related to the market price of gold, silver, copper, lead, and zinc. The price of gold and silver may also significantly influence the market price of the Company’s common stock. The market prices of these metals historically have fluctuated significantly and are affected by numerous factors beyond the Company’s control, including (i) global or regional consumption patterns; (ii) supply of and demand for gold, silver, and base metals on a worldwide basis; (iii) speculative and hedging activities; (iv) expectations for inflation; (v) political and economic conditions; (vi) supply of, and demand for, consumables required for extraction and processing of metals, and (vii) general economic conditions worldwide. Over the last five years (as reported on the London Bullion Market Association using the London PM Fix for gold and silver), gold prices have fluctuated from a low of $1,474 per ounce to a high of $2,778 per ounce, and silver prices have fluctuated from a low of $12.01 per ounce to a high of $34.51 per ounce. On December 31, 2024, the London PM Fix gold price was $2,609 per ounce, and the London PM silver price was $28.91 per ounce.

Currently, the Company does not use hedging transactions with respect to any of its metal production. Accordingly, the Company is fully exposed to price fluctuations in precious metals. In the event metal prices decline or remain low for prolonged periods of time, the Company might be unable to develop its exploration properties, which may materially adversely affect its results of operations, financial performance, and cash flows. An asset impairment charge may result from the occurrence of unexpected adverse events that impact the Company’s estimates of expected cash flows generated from its mining operations or the market value of its non-producing properties, including a material diminution in the price of metals.

Gold Resource Corporation

12

Table of Contents

The Company may not achieve profitability.

The Company’s only production-stage property that produces revenue is DDGM in Mexico, and it may not generate sufficient cash flow to cover the Company’s operating, development, exploration, general and administrative, and other costs due to certain risk factors.Unexpected interruptions in the mining business may cause the Company to incur losses, or the revenue that is generated from extraction may not be sufficient to fund continuing operations, including exploration and mine development costs. The Company’s failure to generate future profits may materially adversely affect the price of its common stock, and stockholders may lose all or part of their investment. Metal prices and foreign currency rates have a significant impact on the Company’s profit margin, and there is no assurance that the Company will be profitable in the future. Please see Item 1A. Risk Factors—General Risks—The Company’s results of operations, cash flows, and the value of its properties are highly dependent on the market prices of gold, silver, and certain base metals and these prices can be volatile.

The Company requires access to additional capital in order to finance its business plans, and there is no guarantee the Company will have access to that capital on favorable terms, or at all.

The Company requires significant funds to develop, access, and determine if Mineral Reserves exist at any of its non-producing properties, continue exploration, and if warranted, develop existing properties and identify and acquire additional properties to diversify its property portfolio.

The Company’s ability to obtain necessary funding for these purposes, in turn, depends upon several factors, including historical and prospective results of operations, the status of the national and worldwide economy, the price of gold, silver, and other metals, the condition of the debt and equity markets, the costs associated with extracting and acquiring minerals, and the market value for its common stock. The Company may not be successful in generating or obtaining the required financing, or if it can obtain such financing, such financing may not be on terms that are favorable to the Company and its shareholders. The Company also may be unable to obtain funding by monetizing additional non-core exploration or other assets at an acceptable price.

The Company cannot provide assurance it will be able to obtain financing to fund its general and administrative costs and other working capital needs to fund continuing business activities in the future on favorable terms, or at all. Failure to obtain financing could result in delay or indefinite postponement of further mining operations, exploration, and construction, as well as the possible partial or total loss of the Company’s interest in its properties.

The Company’s ability to recognize the benefits of deferred tax assets is dependent on future cash flows and taxable income.

The Company recognizes deferred tax assets when the tax benefit is more likely than not to be realized; otherwise, a valuation allowance is applied against deferred tax assets. Assessing the recoverability of deferred tax assets requires management to make significant estimates related to expectations of future taxable income. Estimates of future taxable income are based on forecasted cash flows from operations and the application of existing tax laws in each jurisdiction. To the extent that future cash flows and taxable income differ significantly from estimates, the Company’s ability to realize the deferred tax assets could be impacted. Additionally, future changes in tax laws could limit the Company’s ability to realize the future tax benefits represented by its deferred tax assets.

The Company’s accounting and other estimates may be imprecise.

Preparing financial statements requires management to make estimates and assumptions that affect the reported amounts and related disclosure of assets, liabilities, revenue, and expenses at the date of the consolidated financial statements and reporting periods. The more significant areas requiring the use of management assumptions and estimates relate to:

Gold Resource Corporation

13

Table of Contents

● Future mine plans, ore grades, throughput, and recoveries;

● Future metals prices;

● Future capital and operating costs;

● Environmental, reclamation, and closure obligations;

● Contingent Consideration Liabilities;

● Permitting and other regulatory considerations;

● Asset impairments;

● The valuation of the Company’s investments in equity securities;

● Future foreign exchange rates, inflation rates, and applicable tax rates; and

● Deferred tax asset valuation allowance.

Future estimates and actual results may differ materially from these estimates as a result of using different assumptions or conditions. For additional information, see Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The Company may be required to repay a significant amount if it defaults under certain gold and silver stream agreements.

In connection with the Aquila acquisition, the Company assumed substantial liabilities related to the Gold and Silver Stream Agreements with Osisko (the “Osisko Stream Agreements”). Under the Osisko Stream Agreements, Osisko deposited a total of $37.2 million upfront in exchange for a portion of the future gold and silver production from the Back Forty Project. The Osisko Stream Agreements contain customary provisions regarding default and security. In the event that the Company’s subsidiary defaults under the Osisko Stream Agreements, including by failing to achieve commercial production by an agreed upon date, it may be required to repay the deposit plus accumulated interest at a rate agreed with Osisko. If the Company fails to do so, Osisko may elect to enforce its remedies as a secured party and take possession of the assets that comprise the Back Forty Project.

The Company’s revenues are concentrated among a select few customers. Any interruption in the Company’s relationship with such customers could materially affect the Company’s operating results.

During the year ended December 31, 2024, three customers accounted for 91% of the Company’s revenue from DDGM. In the event that the Company’s relationship with any of the customers is interrupted for any reason, the Company believes that it would be able to locate another entity to purchase its products in a timely manner on substantially similar terms. However, any interruption could temporarily disrupt the sale of the Company’s principal products and materially adversely affect its operating results.

Operational Risks

The Company’s production is derived from a single operating unit, and any interruptions or stoppages in its mining activities at that operating unit would materially adversely affect revenue.

The Company is dependent on revenues from a single operating unit to fund its operations. Any interruption in the Company’s ability to mine this location, such as a labor strike, natural disaster, or loss of permits would negatively impact its ability to generate revenue following such interruption. Additionally, if the Company is unable to develop additional mines economically, it will eventually deplete the body of mineralized material and will no longer generate cash flow sufficient to fund its operations. A decrease in, or cessation of, the Company’s mining operations at this operating unit would materially adversely affect its financial performance and may eventually cause the Company to cease operations.

Gold Resource Corporation

14

Table of Contents

Since the Company’s current property portfolio is limited to one operating unit, its ability to be profitable over the long-term will depend on the Company’s ability to (1) expand the known Arista, Switchback and Three Sisters vein systems and /or identify, explore, and develop additional properties in Mexico, (2) successfully develop the Back Forty Project in Michigan, USA, or (3) acquire and develop an alternative project.

Gold and silver producers must continually replace reserves depleted by production to maintain production levels over the long-term and provide a return on invested capital. Depleted reserves can be replaced in several ways, including expanding known ore bodies, locating new deposits, or acquiring interests in reserves from third parties. Exploration is highly speculative in nature, capital intensive, involves many risks, and frequently unproductive. The Company’s current or future exploration programs may not result in new mineralization. Even if significant mineralization is discovered, it will likely take many years from the initial phases of exploration until commencement of production, during which time the economic feasibility of production may change.

From time to time, the Company may acquire mineral interests from other parties. Such acquisitions are based on an analysis of a variety of factors, including historical exploration results, estimates and assumptions regarding the extent of mineralized material and/or reserves, the timing of production from such reserves, and cash and other operating costs. In addition, the Company may rely on data and reports prepared by third parties, which may contain information or data that the Company would be unable to independently verify or confirm. All of these factors are uncertain and may impact the Company’s ability to develop the mineral interests.

As a result of these uncertainties, the Company’s exploration programs and any acquisitions which it may pursue may not result in the expansion or replacement of its current production with new ore reserves or operations, which could have a material adverse effect on the Company’s business, prospects, results of operations, and financial position.

Increased operating and capital costs have materially adversely impacted the Company’s results of operations and could continue to do so in the near term.

Costs at the Company’s mining properties are subject to fluctuation due to a number of factors, such as variable ore grade, changing metallurgy, and revisions to mine plans in response to the physical shape and location of the ore body, as well as the age and utilization rates for the mining and processing-related facilities and equipment. In addition, costs are affected by the price and availability of input commodities, such as fuel, electricity, labor, chemical reagents, explosives, steel, concrete, and mining and processing related equipment and facilities. Commodity costs are often subject to volatile price movements, including increases that could make mineral extraction less profitable. Further, changes in laws and regulations can affect commodity prices, uses, and transport. Reported costs may also be affected by changes in accounting standards. Increases in costs have materially adversely impacted the Company’s results of operations and operating cash flow and could continue to do so.

The Company could have significant increases in capital and operating costs over the next several years in connection with developing new projects in challenging jurisdictions and sustaining and/or expanding existing mining and processing operations. Costs associated with capital expenditures may increase in the future as a result of factors beyond the Company’s control, such as inflation. Increased capital expenditures may have an adverse effect on the results of operations and cash flow generated from existing operations, as well as the economic returns anticipated from new projects, or may make the development of future projects uneconomic.

Competition in the mining industry is intense, and the Company has limited financial and personnel resources with which to compete.

In the mining industry, competition for desirable properties, investment capital, and human capital is intense. Numerous companies headquartered in the United States, Canada, and worldwide compete for properties and human capital on a global basis. The Company is a small participant in the mining industry due to its limited financial and human capital resources. The Company presently operates with a limited number of people, and it anticipates operating in the same manner going forward. The Company competes with other companies in its industry to hire qualified employees and consultants when needed to operate its mines successfullyand to advance its exploration properties. The Company may

Gold Resource Corporation

15

Table of Contents

be unable to attract the necessary human capital to fully explore, and if warranted, develop its properties and be unable to acquire other desirable properties. The Company believes that competition for acquiring mineral properties, as well as the competition to attract and retain qualified human capital, will continue to be intense in the future.

Estimates of Proven and Probable Mineral Reserves and Measured and Indicated Mineral Resources include some uncertainty, such that the volume and grade of ore actually recovered may vary from the Company’s estimates.

The proven and probable Mineral Reserves stated in this report represent the amount of gold, silver, copper, lead, and zinc that the Company estimated at December 31, 2024, that could be economically and legally extracted or produced at the time of the reserve determination. Estimates of proven and probable Mineral Reserves and measured and indicated Mineral Resources are subject to considerable uncertainty. Such estimates are largely based on the prices of gold, silver, copper, lead, and zinc, as well as interpretations of geologic data obtained from drill holes and other exploration techniques. These prices and interpretations are subject to change. If the Company determines that certain estimated Mineral Reserves or Mineral Resources have become uneconomic, it may be forced to reduce its estimates. Actual production from proven and probable Mineral Reserves may be significantly less than the Company expects. There can be no assurance that estimates of Mineral Resources will be upgraded to Mineral Reserves or may ultimately be extracted.

Any material changes in Mineral Resources and Mineral Reserves estimates and grades of mineralization may affect the economic viability of the Company’s current operations, a decision to place a new property into production, and/or such property’s return on capital. There can be no assurance that mineral recoveries in small-scale laboratory tests will be duplicated in a large-scale on-site operation in a production environment. Declines in market prices for contained metals may render portions of the Company’s Mineral Resources and Mineral Reserves estimates uneconomic and result in reduced reported mineralization or materially adversely affect the commercial viability of one or more of the Company’s properties. Any material reductions in estimates of mineralization, or of the Company’s ability to extract this mineralization, could have a material adverse effect on its results of operations or financial condition.

Products processed from the Company’s operating mines or other mines in the future could contain higher than expected contaminants, thereby negatively impacting the Company’s financial condition.

Contracts for treatment charges paid to smelters and refineries include penalties for certain deleterious elements that exceed contract limits. If the material mined from the Company’s operating mines includes higher than expected contaminants, the Company would incur higher treatment expenses and penalty charges that could increase costs and negatively impact the business, financial condition, and results of operations. This could occur due to unexpected variations in the occurrence of these elements in the material mined, problems occurring during blending of material from various locations in the mine prior to processing, and other unanticipated events.

Continuation of the Company’s mining and processing activities is dependent on the availability of sufficient water supplies to support its mining activities.

Water is critical to the Company’s business, and the increasing pressure on water resources requires the Company to consider both current and future conditions in its management approach. Across the globe, water is a shared and regulated resource. Mining operations require significant quantities of water for mining, ore processing, and related support facilities. Many of the Company’s properties in Mexico are in areas where water is scarce, and competition among users for continuing access to water is significant. Continuous production and mine development depend on the Company’s ability to acquire and maintain water rights and defeat claims adverse to current water use in legal proceedings. Although the Company believes that its operations currently have sufficient water rights and claims to cover operating demands, it cannot predict the potential outcome of future legal proceedings relating to water rights, claims, and uses. Water shortages may also result from weather or environmental and climate impacts beyond the Company’s control. Shortages in water supply could result in production and processing interruptions. In addition, the scarcity of water in certain regions could result in increased costs to obtain sufficient quantities of water to conduct the Company’s operations. The loss of some or all water rights, in whole or in part, ongoing shortages of water to which the Company has rights, or significantly higher costs to obtain sufficient quantities of water (or the failure to procure sufficient quantities of water) could result in the Company’s inability to maintain mineral extraction at current or expected levels, require the Company to curtail or shut

Gold Resource Corporation

16

Table of Contents

down mining operations, and prevent it from pursuing expansion or any development opportunities. Laws and regulations may be introduced in some jurisdictions where the Company operates, which could also limit access to sufficient water resources, thus materially adversely affecting its operations.

The nature of mineral exploration, mining, and processing activities involves significant hazards, a high degree of risk, and the possibility of uninsured losses.

Exploration for and the production of minerals is highly speculative and involves greater risk than many other businesses. Many exploration programs do not result in the discovery of mineralization, and any mineralization discovered may not be of sufficient quantity or quality to be profitably mined. The Company’s operations are, and any future mining operations or construction that may be conducted will be, subject to all of the operating hazards and risks normally incident to exploring for and mining of mineral properties, such as, but not limited to:

● Fluctuation in production costs that make mining uneconomic;

● Fluctuation in commodity prices;

● Changes to legal and regulatory requirements;

● Unanticipated variations in grade and other geologic problems;

● Environmental hazards, noxious fumes, and gases;

● Ground and water conditions;

● Difficult surface or underground conditions;

● Industrial accidents;

● Security incidents;

● Metallurgical and other processing problems;

● Mechanical and equipment performance problems;

● Failure of pit walls, dams, declines, drifts, and shafts;

● Unusual or unexpected rock formations;

● Personal injury;

● Pandemics;

These occurrences could result in damage to—or destruction of—mineral properties, processing facilities, and equipment; personal injury or death; environmental damage; reduced extraction and processing; delays in mining; asset write-downs; monetary losses; and possible legal liability. Although the Company maintains insurance in amounts that it considers reasonable for general commercial liability claims, physical assets at its Arista and Alta Gracia Mines, and risks inherent in the conduct of its business, this insurance contains exclusions and limitations on coverage and will not cover all potential risks associated with mining and exploration activities. As such, the related liabilities might exceed policy limits. As a result of any or all of the foregoing, the Company could incur significant liabilities and costs that may exceed the limits of its insurance coverage or that it may elect not to insure against because of unreasonable premium costs or other reasons, which could materially adversely affect its results of operations and financial condition. The Company may also not be insured against all interruptions to its operations. Losses from these or other events may cause the Company to incur significant costs which could materially adversely affect its financial condition and its ability to fund activities on its properties. A significant loss could force the Company to reduce or suspend its operations and development.

Gold Resource Corporation

17

Table of Contents

Revenue from the sale of metal concentrate may be materially adversely affected by loss or damage during shipment and storage at the Company’s buyer’s facilities.

The Company relies on third-party transportation companies to transport its metal concentrate to each buyer’s facilities for processing and further refining. The terms of the Company’s sales contracts with the buyers require the Company to rely, in part, on assay results from samples of its metal concentrate that are obtained at the buyer’s warehouse to determine the final sales value for metals. Once the metal concentrate leaves the processing facility, the Company no longer have direct custody and control of these products. Theft, loss, road accidents, improper storage, fire, natural disasters, tampering, or other unexpected events while in transit or at the buyer’s location may lead to the loss of all or a portion of the Company’s metal concentrate products. Such losses may not be covered by insurance and may lead to a delay or interruption in revenue, and as a result, the Company’s operating results may be materially adversely affected.

A significant delay or disruption in sales of doré or concentrates as a result of the unexpected disruption in services provided by smelters or refiners could have a material adverse effect on results of operations.

The Company relies on third-party smelters and refiners to refine and process and, in some cases, purchase, the gold and silver doré and copper, lead, and zinc concentrate produced from its mines. Access to smelters and refiners on economic terms is critical to the Company’s ability to sell its products to buyers and generate revenues. The Company periodically enters into agreements with smelters and refiners, some of which operate their smelting or refining facilities outside the United States, and it believes it currently has contractual arrangements with a sufficient number of smelters and refiners so that the loss of any one refiner or smelter would not significantly or materially impact the Company’s operations or its ability to generate revenues. Nevertheless, services provided by a refiner or smelter may be disrupted by operational issues; new or increased tariffs, duties, or other cross-border trade barriers; the bankruptcy or insolvency of one or more smelters or refiners; or the inability to agree on acceptable commercial or legal terms with a refiner or smelter. Such an event or events may disrupt an existing relationship with a refiner or smelter or result in the inability to create a contractual relationship with a refiner or smelter, which may leave the Company with limited, uneconomical, or no access to smelting or refining services for short or long periods of time. Any such delay or loss of access may significantly impact the Company’s ability to sell doré and concentrate products. The Company cannot ensure that alternative smelters or refiners would be available or offer comparable terms if the need for them arose or that it would not experience delays or disruptions in sales that would materially adversely affect the results of operations.

The Company relies on contractors to conduct a significant portion of the Company’s exploration, development, and construction projects.

A significant portion of the Company’s development and construction projects are currently conducted in whole or in part by contractors. As a result, the Company’s operations are subject to a number of risks, some of which are outside of its control, including:

● Negotiating agreements with contractors on acceptable terms;

● Failure of a contractor to perform under its agreement;

Gold Resource Corporation

18

Table of Contents

In addition, the Company may incur liability to third parties as a result of the actions of its contractors. The occurrence of one or more of these risks could materially adversely affect the Company’s results of operations and financial position.

Risks Related to the Company’s Exploration Activities

The exploration of the Company’s mineral properties is highly speculative in nature, involves substantial expenditures, and is frequently non-productive.

Mineral exploration is highly speculative in nature and frequently results in no or very little return on amounts invested in evaluating a particular property. The probability of an individual prospect ever having Mineral Reserves that meets the requirements of Subpart 1300 of Regulation S-K (“S-K 1300”) is low.Even if the Company does eventually discover Mineral Resources and Mineral Reserves on its exploration properties, there can be no assurance that it can develop a mine and extract those minerals. Substantial expenditures are required to (i) establish the existence of a potential ore body through drilling and metallurgical and other testing techniques; (ii) determine metal content and metallurgical recovery processes to process metal from the ore; (iii) determine the feasibility of mine development and production; and (iv) construct, renovate, or expand mining and processing facilities. If the Company discovers a deposit or ore at a property, it usually takes several years from the initial phases of exploration until mineral extraction is possible, if at all. During this time, the economic feasibility of a project may change because of increased costs, lower metal prices, or other factors. As a result of these uncertainties, the Company’s exploration programs may not result in the identification of proven and probable Mineral Reserves in sufficient quantities to justify developing a particular property.

The Company has acquired and may in the future acquire additional mining properties, and the Company’s business may be negatively impacted if Mineral Resources and Mineral Reserves are not located on acquired properties or if it is unable to successfully execute and/or integrate the acquisitions as planned.

The Company has in the past, and may in the future, acquire additional mining properties. There can be no assurance that reserves will be identified on any properties that it acquires. The Company may experience negative impacts on the trading price of its common stock or on its ability to access capital if it successfully completes acquisitions of additional properties and reserves are not located on these properties.

In December 2021, the Company acquired the Back Forty Project when it purchased Aquila. The acquisition may result in various material adverse impacts on the Company’s business and the trading price of its common stock. Adverse impacts may include, without limitation, the risk that the acquisition does not achieve the expected benefits, increased cash outflows, the unavailability of capital to develop the Back Forty Project, and the risk of potential material adverse tax consequences for the Company and its shareholders. Additional risks, difficulties, and uncertainties may result from the separation of previously co-mingled businesses, including necessary ongoing relationships. While the Company has invested significant time, money, and equity in acquiring the Back Forty Project, there can be no assurance that the Back Forty Project will be permitted or will ultimately be productive.

The success of any future acquisition would depend on a number of factors, including, but not limited to:

There can be no assurance that the Company will be able to successfully conclude any acquisitions, or that any acquisition will achieve the anticipated synergies or other anticipated positive results. Any material problems that the Company encounters in connection with such an acquisition could have a material adverse effect on its business, results

Gold Resource Corporation

19

Table of Contents

of operations, and financial position. These factors may materially adversely affect the trading price of the Company’s common stock.

Regulatory Risks

The Company’s operations are subject to ongoing permitting requirements, which could result in the delay, suspension, or termination of its operations.

The Company’s operations, including ongoing exploration drilling programs and mining, require ongoing permits from governmental and local authorities. The Company may also be required to obtain certain property rights to access or use its properties. Obtaining or renewing licenses and permits and acquiring property rights can be complex and time-consuming processes. There can be no assurance that the Company will be able to acquire all required licenses, permits, or property rights on reasonable terms or in a timely manner, or at all, and that such terms will not be adversely changed; that required extensions will be granted; or that the issuance of such licenses, permits or property rights will not be challenged by third parties. If the Company cannot obtain or maintain the necessary permits, or if there is a delay in receiving future permits, its timetable and business plan will be materially adversely affected.

The Company’s operating properties located in Mexico are subject to changes in political or economic conditions and regulations in that country.

The risks with respect to operating in Mexico or other developing countries include, but are not limited to: nationalization of properties, military repression, extreme fluctuations in currency exchange rates, increased security risks, labor instability or militancy, mineral title irregularities, and high rates of inflation. In addition, changes in mining or investment policies or shifts in political attitudes in Mexico may materially adversely affect the Company’s business. The Company may be affected in varying degrees by government regulation concerning restrictions on production, price controls, export controls, income taxes, expropriation of property, maintenance of claims, environmental legislation, land use, land claims of local people, opposition from non-governmental organizations, labor legislation, water use, and mine safety. The effect of these factors cannot be accurately predicted and may adversely impact the Company’s operations.

Most of the Company’s properties are subject to extensive environmental laws and regulations, which could materially adversely affect its business.

The Company’s exploration and miningoperations are subject to extensive laws and regulations governing land use and the protection of the environment, which control the exploration and mining of mineral properties and their effects on the environment, including air and water quality, mine reclamation, waste generation, handling and disposal, the protection of different species of flora and fauna, and the preservation of lands. These laws and regulations require the Company to acquire permits and other authorizations for conducting certain activities. In many countries, there is relatively new comprehensive environmental legislation, and the permitting and the authorization process may not be established or predictable. The Company may not be able to acquire necessary permits or authorizations on a timely basis, if at all. Delays in acquiring any permit or authorization could increase the cost of the Company’s projects and could suspend or delay the commencement of extraction and processing of mineralized material.

Environmental legislation in Mexico and in many other countries is evolving in a manner that will require stricter standards and enforcement, increased fines and penalties for non-compliance, more stringent environmental assessments of proposed projects, and a heightened degree of responsibility for companies and their officers, directors, and employees. Future changes in environmental regulation in the jurisdictions where the Company’s properties are located may materially adversely affect its business, make the business prohibitively expensive, or prohibit it altogether. The Company cannot predict what environmental legislation or regulations will be enacted or adopted in the future or how future laws and regulations will be administered or interpreted. Compliance with more stringent laws and regulations, as well as potentially more vigorous enforcement policies, stronger regulatory agencies, or stricter interpretation of existing laws, may (i) necessitate significant capital outlays, (ii) cause the Company to delay, terminate, or otherwise change its intended activities with respect to one or more projects, or (iii) materially adversely affect future exploration activities.

Gold Resource Corporation

20

Table of Contents

Climate change and climate change legislation or regulations could impact the Company’s business.

The Company is subject to physical risks associated with climate change, which could seriously harm its results of operations and increase costs and expenses. The occurrence of severe adverse weather conditions, including increased temperatures and droughts, fires, longer wet or dry seasons, increased precipitation, floods, hail, snow, or more severe storms may have a potentially devastating impact on the Company’s operations. Adverse weather may result in physical damage to operations, instability of the Company’s infrastructure and equipment, washed-out roads to its properties, and altered water and electricity supply to projects. Increased temperatures may also decrease worker productivity at the Company’s projects and raise ventilation and cooling costs. Changes in the quantity of water, whether in excess or deficient amounts, may impact exploration and development activities, mining and processing operations, water storage and treatment facilities, tailings storage facilities, closure and reclamation efforts, and may increase levels of dust in dry conditions, and land erosion and slope stability in case of prolonged wet conditions. Should the impacts of climate change be material in nature or occur for lengthy periods of time in the areas in which the Company operates, financial condition or results of operations could be materially adversely affected.

The Company’s continuing reclamation obligations at its operations could require significant additional expenditures.

The Company is responsible for the reclamation obligations related to disturbances located on all of its properties and have recorded a liability on its Consolidated Balance Sheets to cover the estimated reclamation obligation. However, there is a risk that any reserve could be inadequate to cover the actual costs of reclamation when carried out. Continuing reclamation obligations will require a significant amount of capital. There is a risk that the Company will be unable to fund these obligations and that the regulatory authorities may increase reclamation requirements to such a degree that it would not be commercially reasonable to continue mining and exploration activities, which may materially adversely affect results of operations, financial performance, and cash flows.

Title to mineral properties can be uncertain,and in the event of a dispute regarding the title to the Company’s Mexican properties, it will likely be necessary for the Company to resolve the dispute in Mexico, where it would be faced with unfamiliar laws and procedures.

The Company’s ability to explore and operate its properties depends on the validity of its title to that property. Uncertainties inherent in mineral properties relate to such things as the sufficiency of mineral discovery, proper posting and marking of boundaries, assessment work and possible conflicts with other claims not determinable from public record. There may be valid challenges to the title to the Company’s properties which, if successful, could impair development and/or operations. The resolution of disputes in foreign countries can be costly and time consuming. In a foreign country, the Company face the additional burden of understanding unfamiliar laws and procedures. Not like in the U.S., the Company may not be entitled to a jury trial. Further, to litigate in any foreign country, the Company would be faced with the necessity of hiring lawyers and other professionals who are familiar with the foreign laws. For these reasons, the Company may incur unforeseen costs if it is forced to resolve a dispute in Mexico or any other foreign country.

In most of the countries where the Company operates, failure to comply with applicable laws and regulations relating to mineral right applications and tenure could result in loss, reduction or expropriation of entitlements, or the imposition of additional local or foreign parties as joint venture partners. Any such loss, reduction, or imposition of partners could have a material adverse effect on the Company’s financial condition, results of operations, and prospects.

Under the laws of Mexico, Mineral Resources belong to the United States of Mexico, and government concessions are required to explore for or exploit Mineral Reserves. Mineral rights derive from concessions granted—on a discretionary basis—by the Ministry of Economy, pursuant to the Mexican mining law and regulations thereunder. The Company’s concessions in Mexico are subject to continuing government regulation, and failure to adhere to such regulations will result in the termination of the concession. A title defect could result in losing all or a portion of the Company’s right, title, and interest in and to the properties to which the title defect relates.

Additionally, in 2014, new mining concessions became subject to additional review and approval by the Mexico Ministry of Energy, and in recent years, the federal government has been reluctant to issue new mining concessions.

Gold Resource Corporation

21

Table of Contents

Mining concessions in Mexico give exclusive exploration and exploitation rights to the minerals located in the concessions but do not include surface rights to the real property, which requires that the Company negotiates the necessary agreements with surface landowners. Many of the mining properties are subject to the Mexican Ejido system, requiring the Company to contract with the local communities surrounding the properties in order to obtain surface rights to land needed in connection with mining exploration activities. Please see Item 1A. Risk Factors—Regulatory Risks—The Company’s ability to develop its Mexican properties is subject to the rights of the Ejido (agrarian cooperatives) who use or own the surface for agricultural purposes.

The Company’s ability to develop its Mexican properties is subject to the rights of the Ejido (agrarian cooperatives), who use or own the surface for agricultural purposes.

The Company’s ability to mine minerals is subject to maintaining satisfactory arrangements and relationships with the Ejido for access and surface disturbances. Ejidos are groups of local inhabitants who were granted rights to conduct agricultural activities on the property. The Company must negotiate and maintain a satisfactory arrangement with these residents in order to disturb or discontinue their rights to farm. While the Company has successfully negotiated and signed such agreements related to the DDGM operations, its inability to maintain these agreements or consummate similar agreements for new projects could impair or impede the ability to successfully explore, develop, and mine the properties, which in turn could materially adversely affect the Company’s future cash flow.

A significant amount of the Company’s mining properties are subject to exchange control policies, the effects of inflation, and currency fluctuations between the U.S. dollar and the Mexican peso.

The Company’s revenue and external funding are primarily denominated in U.S. dollars. However, certain mining, processing, maintenance, and exploration costs are denominated in Mexican pesos. These costs principally include electricity, labor, water, maintenance, local contractors, and fuel. The appreciation of the peso against the U.S. dollar increases expenses and the cost of purchasing capital assets in U.S. dollar terms in Mexico, which can adversely impact the Company’s operating results and cash flows. Conversely, the depreciation of the Mexican peso decreases operating costs and capital asset purchases in U.S. dollar terms. When inflation in Mexico increases without a corresponding devaluation of the Mexican peso, the Company’s financial position, results of operations, and cash flows could be materially adversely affected. The annual average inflation rate in Mexico was approximately 4.72% in 2024 and 5.55% in 2023. Current and future inflationary effects may be driven by, among other things, supply chain disruptions, governmental stimulus or fiscal policies, and geopolitical instability. For additional information, please see Item 1A. Risk Factors—General Risks—Global and regional political and economic conditions could adversely impact the Company’s business. Continuing increases in inflation could increase the costs of labor and other costs related to the business, which could have an adverse impact on the Company’s business, financial position, results of operations, and cash flows.

At the same time, the peso has been subject to fluctuation, which may not have been proportionate to the inflation rate and may not be proportional to the inflation rate in the future. The value of the peso decreased by16.7% in 2024 and increased by 14.6% in 2023. In addition, fluctuations in currency exchange rates may have a significant impact on the Company’s financial results. There can be no assurance that the Mexican government will maintain its current policies with regard to the peso or that the peso’s value will not fluctuate significantly in the future. The Company cannot assure you that currency fluctuations, inflation, and exchange control policies will not have an adverse impact on its financial condition, results of operations, earnings, and cash flows.

Lack of infrastructure could forestall or prevent further exploration and advancement.

Exploration activities, as well as any advancement activities, depend on adequate infrastructure. Reliable roads, bridges, power sources, and water supply are important factors that affect capital and operating costs and the feasibility and economic viability of a project. Unanticipated or higher than expected costs and unusual or infrequent weather phenomena, or government or other interference in the maintenance or provision of such infrastructure, could materially adversely affect the Company’s business, financial condition, and results of operations.

Gold Resource Corporation

22

Table of Contents

Risks Related to the Company’s Common Stock

Volatility in the Company’s stock price could result in shareholders losing part or all of their investment.

In addition to other risk factors identified in this annual report on Form 10-K, and due to volatility associated with equity securities in general, the value of a shareholder’s investment could decline due to the impact of numerous factors upon the market price of the Company’s common stock, including divergence between its actual or anticipated financial results and published expectations of analysts or the expectations of the market, the gain or loss of customers, announcements that the Company, its competitors or its customers may make regarding their operating results and other factors that are beyond the Company’s control, such as market conditions in the Company’s or its customers’ industry, new market entrants, technological innovations, and economic and political conditions or events.

Stock markets in general have experienced extreme price and volume fluctuations, and the market prices of individual securities have been highly volatile. These fluctuations are often unrelated to operating performance and may materially adversely affect the market price of the Company’s common stock. As a result, shareholders may be unable to sell their shares at a desired price.

Past payments of dividends on the Company’s common stock are not a guaranty of future payments of dividends.

In 2010, the Company began paying cash dividends to the holders of its common stock. However, the Company’s ability to pay dividends in the future will depend on a number of factors, including free cash flow, expected operational performance, mine construction requirements and strategies, other acquisition and/or construction projects, spot metal prices, taxation, government-imposed royalties, and general market conditions. Further, a portion of the Company’s cash flow is expected to be retained to finance operations, explorations, and development of mineral properties. In February 2023, in order to conserve cash for future development and exploration, the Company announced the suspension of quarterly dividends. There is no assurance that the Board will elect to re-institute a dividend payment in the near-term or at all.

Issuances of the Company’s stock in the future could dilute existing shareholders and materially adversely affect the market price of its common stock.

The Company has the authority to issue up to 200,000,000 shares of common stock, 5,000,000 shares of preferred stock, and to issue options and warrants to purchase shares of its common stock, in some cases without shareholder approval. As of April 4, 2025, there were 120,442,686 shares of common stock outstanding. Future issuances of the Company’s securities could be at prices substantially below the price paid for its common stock by current shareholders. The Company can issue significant blocks of its common stock without further shareholder approval. Because it has issued less common stock than many of its larger peers, the issuance of a significant amount of common stock may have a disproportionately large impact on share price compared to larger companies.

General Risks

The Company has identified a material weakness in its internal control over financial reporting that has resulted in the restatement of certain previously issued financial statements. If the Company is unable to remediate the material weakness, or if it identifies additional material weaknesses in the future or otherwise fails to maintain effective internal control over financial reporting or disclosure controls and procedures, it may result in future material misstatements of the Company’s consolidated financial statements or cause the Company to fail to meet its periodic reporting obligations, which may adversely affect the Company’s business, financial condition, and results of operations.

The Company is required to provide management’s attestation on internal controls. As disclosed in Item 9A. Controls and Procedures in this Form 10-K, management has identified a material weakness in the Company’s internal control over financial reporting. A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the Company’s annual

Gold Resource Corporation

23

Table of Contents

or interim financial statements could occur but will not be prevented or detected on a timely basis. In connection with the Company’s evaluation of internal control over financial reporting for the year ended December 31, 2024, the following material weakness has been identified:

If the Company is unable to remediate its existing material weakness or if, in the future, the Company is unable to maintain effective internal control over financial reporting pursuant to Section 404(a), the Company may not be able to assess whether its internal controls over financial reporting are effective, which may subject it to financial reporting misstatements and adverse regulatory consequences and could harm investor confidence and the market price of the Company’s shares of common stock.

The restatement of certain previously issued financial statements may affect stockholder and investor confidence in the Company, or harm the Company's reputation, and may subject the Company to additional risks and uncertainties, including increased cost and the increased probability of legal proceedings, regulatory inquiries, sanctions, or investigations.

As mentioned above, management identified a material weakness in the Company’s internal control over financial reporting, which has resulted in the restatement of the following previously issued financial statements within this Form 10-K: (i) its interim consolidated financial statements for the quarterly periods ended March 31, 2023, June 30, 2023, September 30, 2023, March 31, 2024, June 30, 2024 and September 30, 2024 and (ii) its consolidated audited financial statements for the year ended December 31, 2023.

As a result of the restatement, the Company has incurred, and may continue to incur, unanticipated costs for accounting and legal fees in connection with, or related to, such restatement. In addition, such restatement could subject the Company to several additional risks and uncertainties, including the increased possibility of legal proceedings and inquiries, sanctions or investigations by the SEC or other regulatory authorities. Any of the foregoing may adversely affect the Company’s reputation, the accuracy and timing of its financial reporting, or its business, results of operations, liquidity and financial condition, or cause stockholders, investors, members and customers to lose confidence in the accuracy and completeness of the Company’s financial reports or cause the market price of its common stock to decline.

The Company’s operations may be disrupted, and its financial results may be materially adversely affected by any future pandemic.

Any pandemic may pose a risk to the business and operations. If a significant portion of the Company’s workforce becomes unable to work or travel to the operations due to illness or state or federal government restrictions (including travel restrictions and “shelter-in-place” and similar orders restricting certain activities that may be issued or extended by authorities), the Company may be forced to reduce or suspend operations, exploration activities, and/or development projects, which may impact liquidity and financial results. These restrictions have significantly disrupted economic activity in both the world, national, and local economies and have caused volatility in capital markets.

To the extent any pandemic materially adversely affects the Company’s business and financial results, as discussed above, it may also have the effect of heightening many of the other risks described in this “Risk Factors” section, such as those relating to operation, indebtedness, and financing. The Company is unable to predict the ultimate adverse impact of any pandemic on the business, which will depend on numerous evolving factors and future developments, including the pandemic’s ongoing effect on the demand for silver and gold, as well as the response of the overall economy and the financial markets after the pandemic and response measures come to an end, the timing of which remains highly unpredictable.

Gold Resource Corporation

24

Table of Contents

Global and regional political and economic conditions could adversely impact the Company’s business.

Political and economic shifts, both domestic and international, may create uncertainty and pose risks to the Company’s operations. Policies related to populism, protectionism, economic nationalism, and attitudes toward multinational corporations could result in regulatory changes, trade barriers, or investment restrictions. Additionally, international trade disputes—including tariffs, counter-tariffs, export controls, sanctions, and currency regulations—may increase costs and disrupt supply chain, operating model, and customer relationships.

Further, market volatility, driven by shifts in U.S. and foreign trade policies, fluctuating interest rates, or currency controls may affect gold prices, capital availability, and investor confidence. Even the perception of these risks could lead to reduced investment, higher production costs, and operational challenges. If such trends continue, they may have a material adverse effect on the business and financial performance.

The Company may not be able to operate successfully if it is unable to recruit, hire, retain, and develop key personnel and maintain a qualified and diverse workforce. In addition, the Company is dependent upon its employees being able to safely perform their jobs, but there is risk of physical injuries or illness.

The Company depends upon the services of a number of key executives and management personnel. These individuals include executive officers and other key employees. If any of these individuals were to die, become disabled, or leave the Company, the Company would be forced to identify and retain individuals to replace them but may be unable to hire a suitable replacement on favorable terms should that become necessary.

The Company’s success is also dependent on the contributions of its highly skilled and experienced workforce. The Company’s ability to achieve its operating goals depend upon the ability to recruit, hire, retain, and develop qualified and diverse personnel to execute on its strategy. There continues to be competition over highly skilled personnel in the industry. If the Company loses key personnel or one or more members of senior management team; or if it fails to develop adequate succession plans; or if it fails to hire, retain, and develop qualified and diverse employees; the business, financial condition, results of operations, and cash flows could be harmed.

The Company is dependent on information technology systems, which are subject to certain risks, including cybersecurity risks, data leakage risks, and risks associated with implementation and integration.

The Company is dependent upon information technology systems in the conduct of its business. Any significant breakdown, invasion, virus, cyberattack, security breach, destruction, or interruption of these systems by employees, others with authorized access to its systems, or unauthorized persons could negatively impact the business. To the extent any invasion, cyberattack, or security breach results in disruption to the business; such as loss or disclosure of, or damage to data or confidential information; business reputation, results of operations, and financial condition could be materially adversely affected. The Company has implemented various measures to manage the risks related to information technology systems and network disruptions. However, given the unpredictability of the timing, nature, and scope of information technology disruptions, the Company could potentially be subject to production downtimes, operational delays, the compromising of confidential or otherwise protected information, destruction or corruption of data, security breaches, other manipulation or improper use of its systems, and networks or financial losses from remedial actions, any of which could have a material adverse effect on cash flows, competitive position, financial condition, or results of operations. The Company’s systems and insurance coverage for protecting against cyber security risks may not be sufficient. Although to date the Company has not experienced any material losses relating to cyberattacks, it may suffer such losses in the future. The Company may be required to expend significant additional resources to continue to modify or enhance protective measures. The Company also may be subject to significant litigation, regulatory investigation, and remediation costs associated with any information security vulnerabilities, cyberattacks, or security breaches.

The Company may also be materially adversely affected by system or network disruptions if new or upgraded information technology systems are defective, not installed properly, or not properly integrated into its operations. If the Company is unable to successfully implement system upgrades or modifications, it may have to rely on manual reporting

Gold Resource Corporation

25

Table of Contents

processes and controls over financial reporting that have not been planned, designed, or tested. Various measures have been implemented to manage the risks related to the system upgrades and modifications, but system upgrades and modification failures could have a material adverse effect on the business, financial condition, and results of operations and could, if not successfully implemented, adversely impact the effectiveness of internal controls over financial reporting.

The Company’s business is subject to the U.S. Foreign Corrupt Practices Act and similar worldwide anti-bribery laws, a breach or violation of which could lead to civil and criminal fines and penalties, loss of licenses or permits, and reputational harm.

The Company operates in certain jurisdictions that have experienced some degree of governmental and private sector corruption, and in certain circumstances, strict compliance with anti-bribery laws may conflict with certain local customs and practices. The U.S. Foreign Corrupt Practices Act and anti-bribery laws in other jurisdictions generally prohibit companies and their intermediaries from making improper payments for the purpose of obtaining or retaining business or other commercial advantages. The Company’s Code of Ethics and other corporate governance mandate compliance with these anti-bribery laws, which often carry substantial penalties. However, there can be no assurance that internal control policies and procedures will always protect the Company from recklessness, fraudulent behavior, dishonesty, or other inappropriate acts committed by affiliates, employees, contractors, or agents. As such, the corporate policies and processes may not prevent all potential breaches of law or other governance practices. Violations of these laws, or allegations of such violations, could lead to civil and criminal fines and penalties, litigation, loss of operating licenses or permits, and may damage the Company’s reputation, which could have a material adverse effect on the business, financial position, and results of operations, or cause the market value of common stock to decline.

ITEM 1B.UNRESOLVED STAFF COMMENTS

None.

ITEM 1C.CYBERSECURITY

Risk Management and Strategy

The Company has established policies and processes for assessing, identifying, and managing material risk from cybersecurity threats and have integrated these processes into its overall risk management systems and processes. The Company routinely assesses material risks from cybersecurity threats, including any potential unauthorized occurrence on or conducted through its information systems that may result in adverse effects on the confidentiality, integrity, or availability of information systems or any information residing therein.

The Company conducts periodic risk assessments to identify cybersecurity threats, as well as assessments in the event of a material change in business practices that may affect information systems that are vulnerable to such cybersecurity threats. These risk assessments include identification of reasonably foreseeable internal and external risks, the likelihood and potential damage that could result from such risks, and the sufficiency of existing policies, procedures, systems, and safeguards in place to manage such risks.

Governance

One of the key functions of the Board is informed oversight of the risk management process, including risks from cybersecurity threats. The Board is responsible for monitoring and assessing strategic risk exposure, and management is responsible for the day-to-day management of any material risks that may arise. The Board receives periodic updates from management regarding cybersecurity matters and is notified between such updates regarding any significant new cybersecurity threats or incidents. The Company does not believe that there are currently any known risks from cybersecurity threats that are reasonably likely to materially affect it or its business strategy, results of operations, or financial condition. For more information regarding the expertise of the Board as it relates to cybersecurity, see the section entitled “Governance” in the Company’s definitive proxy statement relating to the 2024 Annual Meeting of Stockholders filed with the SEC on April 29, 2024.

Gold Resource Corporation

26

Table of Contents

Management is responsible for the operational oversight of company-wide cybersecurity strategy, policy, and standards across relevant departments to assess and help prepare the Company to address cybersecurity risks. As part of the overall risk management system, the Company monitors and tests safeguards and trains employees on these safeguards. Personnel at all levels and departments are made aware of the cybersecurity policies through trainings.

Cybersecurity Threats

As of December 31, 2024, the Company has not identified an indication of a cybersecurity incident that would have a material impact on the Company’s business and consolidated financial statements. For further discussion of cybersecurity risks, please refer to Item 1A. Risk Factors.

Gold Resource Corporation

27

Table of Contents

ITEM 2. PROPERTIES

Glossary.

The following terms used in this report shall have the following meanings:

​ ​

​ ​

​ ​

​ ​

​ ​

​ ​

​ ​

​ ​

​ ​

​ ​

​ ​

​ ​

Volcanogenic: Of volcanic origin.

​ ​

Gold Resource Corporation

28

Table of Contents

Overview

The Company classifies its mineral properties into three categories: “Production Stage Properties,” “Development Stage Properties,” and “Exploration Stage Properties.” Production Properties are properties for which the Company operates a producing mine.

At the Don David Gold Mine, the Company currently has 100% interest in six properties, including two Production Stage Properties and four Exploration Stage Properties, located in Oaxaca, Mexico, along the San Jose structural corridor. Because of their proximity and relatively integrated operations, the Company collectively refers to the six properties as the Don David Gold Mine. The two Production Stage Properties are the only two of the six properties that make up the Don David Gold Mine that the Company considers to be independently material at this time. Please see Item 2. Properties – Don David Gold Mine for further discussion of the properties.

The Company also has 100% interest in the Back Forty Project, an advanced Exploration Stage Property, located in Menominee County, Michigan, USA. The Company does not consider the Back Forty Project to be independently material to the Company at this time. Please see Item 2. Properties – Back Forty Project for further discussion of the property.

Mineral Resources

Under S-K 1300, a “Mineral Resource” is defined as “a concentration or occurrence of material of economic interest in or on the Earth’s crust in such form, grade or quality, and quantity that there are reasonable prospects for economic extraction.” A “Mineral Resource” is a “reasonable estimate of mineralization, taking into account relevant factors such as cut-off grade, likely mining dimensions, location or continuity, that, with the assumed and justifiable technical and economic conditions, is likely to, in whole or in part, become economically extractable. It is not merely an inventory of all mineralization drilled or sampled.”

Gold Resource Corporation

29

Table of Contents

The following tables summarize the estimated Mineral Resources at DDGM and at Back Forty:

Don David Gold Mine – Summary of Gold, Silver, and Base Metal Mineral Resources

at December 31, 2024(1)(2)(3)(4)(5)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Arista ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $/Tonne ​ Au ​ Ag ​ Cu ​ Pb ​ Zn

Alta Gracia ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ AuEq/tonne ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Notes on Mineral Resources:

For comparison, as at December 31, 2023, DDGM’s estimates of Mineral Resources, exclusive of Mineral Reserves, are provided in the below table.

Don David Gold Mine – Summary of Gold, Silver, and Base Metal Mineral Resources

at December 31, 2023(1)(2)(3)(4)(5)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Arista ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $/Tonne ​ Au ​ Ag ​ Cu ​ Pb ​ Zn

Alta Gracia ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ AuEq/tonne ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Notes on Mineral Resources:

Gold Resource Corporation

30

Table of Contents

During 2024, the Company performed a comprehensive review of its geological database and interpretation of the mineralization, the block models derived from them, and ultimately the mine plan to ensure more reliable and accurate mine planning and forecasting. In addition, metallurgy, mining methods, ground control, and other parameters were reviewed. As a result of this review, measured and indicated Mineral Resources decreased from approximately 0.73 million tonnes at December 31, 2023 to approximately 0.37 million tonnes at December 31, 2024. The primary factor for this decrease was the change in the NSR cutoff grade from $100/tonne to $120/tonne resulting in a decrease of 0.89 million tonnes. These reductions were partially offset by a 0.02 million tonne increase due to higher metal prices and the conversion and addition of 0.51 million tonnes of inferred Mineral Resource to measured and indicated Mineral Resource, attributed to the 2024 infill and step-out drilling program. The total inferred Mineral Resources increased from approximately 1.56 million tonnes at December 31, 2023 to approximately 1.99 million tonnes at December 31, 2024. The increase in inferred Mineral Resources was mainly due to the successful 2024 infill and step-out drilling program at the Three Sisters vein system along with optimized mine planning.

More information regarding the assumptions, methodologies, and procedures utilized in the estimation of Mineral Resources at DDGM can be found in the updated Don David Gold Mine Technical Report Summary, effective as of December 31, 2024, which is incorporated by reference as Exhibit 96.2 to this Form 10-K (the “DDGM Technical Report Summary”).

Back Forty Project – Summary of Gold, Silver, and Base Metal Mineral Resources

at December 31, 2023 and 2024(1) (2) (3) (4)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Back Forty - Open Pit ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $/Tonne

Measured Mineral Resources ​ - ​ - ​ - ​ - ​ - ​ - ​ -

Back Forty - Underground ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ AuEq/tonne

Measured Mineral Resources ​ - ​ - ​ - ​ - ​ - ​ - ​ -

Notes on Mineral Resources:

Following the completion of the optimization work for the Back Forty Project, the Company published an update on indicated and inferred Mineral Resources in the Back Forty Project Technical Report Summary released in October 2023. A measured Mineral Resource estimate or a Mineral Reserve estimate have yet to be established for the Back Forty Project.

More information regarding the assumptions, methodologies, and procedures utilized in the estimation of Mineral Resources at Back Forty can be found in the Back Forty Project Technical Report Summary incorporated by reference as Exhibit 96.1 to this Form 10-K.

Gold Resource Corporation

31

Table of Contents

Mineral Reserves

Under S-K 1300, a “Mineral Reserve” is defined as “an estimate of tonnage and grade or quality of measured and indicated Mineral Resources that, in the opinion of the qualified person, can be the basis of an economically viable project.”

The following tables summarize the estimated Mineral Reserves at DDGM:

Don David Gold Mine – Summary of Gold, Silver and Base Metal Mineral Reserves

at December 31, 2024 (1) (2) (3) (4)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Recovery

Don David Gold Mine ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Arista Mine (2) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $/Tonne ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Alta Gracia Mine (3) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ AuEq/tonne ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Proven Mineral Reserves ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ ​ ​ ​ ​ ​

Probable Mineral Reserves ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ ​ ​ ​ ​ ​

Alta Gracia Mine Total ​ - ​ - ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Notes on Mineral Reserves:

2. The Arista Mine NSR cut-off grades for Mineral Reserves are $120/tonne.

Gold Resource Corporation

32

Table of Contents

For comparison, as at December 31, 2023, DDGM’s estimates of Mineral Reserves are presented in the table below.

Don David Gold Mine – Summary of Gold, Silver and Base Metal Mineral Reserves

at December 31, 2023 (1) (2) (3) (4)

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Recovery

Don David Gold Mine ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Arista Mine (2) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $/Tonne ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Alta Gracia Mine (3) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ AuEq/tonne ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Proven Mineral Reserves ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ ​ ​ ​ ​ ​

Probable Mineral Reserves ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ - ​ ​ ​ ​ ​ ​

Alta Gracia Mine Total ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Notes on Mineral Reserves:

2. The Arista Mine NSR cut-off grades for Mineral Reserves are $120/tonne.

Proven and probable Mineral Reserves increased from 1.06 million tonnes at December 31, 2023 to 1.12 million tonnes at December 31, 2024. This increase was primarily due to the reclassification of 0.43 million tonnes from Inferred Mineral Resources to proven and probable Mineral Reserves due to the successful results of the 2024 infill drilling program at the Three Sisters vein system and detailed engineering. There was no appreciable conversion of measured and indicated Mineral Resources to proven and probable Mineral Reserves in 2024. Mineral Reserves were depleted by 0.35 million tonnes from 2024 mining activities and by an additional 0.03 million tonnes resulting from engineering deductions at the Arista Mine.

More information regarding the assumptions, methodologies, and procedures utilized in the estimation of Mineral Reserves can be found in the DDGM Technical Report Summary incorporated by reference as Exhibit 96.2 to this Form 10-K.

Gold Resource Corporation

33

Table of Contents

Don David Gold Mine

All of the properties that make up the Don David Gold Mine are located in Oaxaca, Mexico, in what is known as the San Jose structural corridor, which trends 70 degrees north-west. The Company’s properties comprise 551 continuous square kilometers of ground along a 55 kilometer structural corridor, encompassing three historic mining districts in Oaxaca. The map below shows the general location of the properties:

The Company was granted concessions from the Mexican federal government to explore and mine the properties in Mexico. Please see below Item 2. Properties—Mining Concessions and Regulations in Mexico belowfor additional information. The Company holds certain properties as the concession holder and lease other properties from third parties. The Company is required to pay concession fees to the Mexican government to maintain its interest in these concessions, and it pays concession fees for all the mineral properties, including those which are subject to the third-party lease.

Gold Resource Corporation

34

Table of Contents

The table below details information related to the mining concessions that comprise the properties in Oaxaca, Mexico:

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

​ ​ ​ (in hectares) ​ ​ ​ ​ ​

Production Stage Properties: ​ ​ ​ ​ ​ ​ ​ ​

Total Production Stage Properties: ​ ​ ​ 29,547 ​ ​ ​ $ 703,133 ​

Exploration Stage Properties: ​ ​ ​ ​ ​ ​ ​ ​

Total Exploration Stage Properties: ​ ​ ​ 25,572 ​ ​ ​ $ 609,404 ​

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Production Stage Properties

Arista & Alta Gracia Mines

History: The Arista and Alta Gracia Mines are in the regional Tlacolula mining district within Oaxaca State, in southern Mexico. According to the Mexican Geological Survey, the Servicio Geologico Mexicano (“SGM”), mining activity was initiated in the early 1880s in the Tlacolula mining district, producing some 300,000 gold and silver ounces from an ore shoot in the La Leona mine. However, no separate amounts of production were reported for each metal. According to the SGM, in 1892, two smelters were built and operated (Magdalena Teitipac and O’Kelly) near the village of Tlacolula for processing ores from the Alta Gracia La Soledad, San Ignacio y Anexas, La Leona, La Victoria, and San Rafael silver mines. Subsequently, in 1911, Mr. Sken Sanders investigated the Totolapam mining region with a particular interest in the Margaritas mine. Most of these historical mines are within DDGM’s mining concessions.

While the DDGM Arista Mine and Alta Gracia Mine are in the smaller mining subdistricts of San Jose de Gracia and Alta Gracia, respectively, only small-scale artisanal mining was historically conducted in these areas’ subdistricts. No reliable production records exist for the historic production performed in the Arista and Alta Gracia Project areas.

Arista Mine

Background: The Arista Mine currently holds 18 mining concessions aggregating 24,372 hectares.

In 2002, three initial concessions were leased from a third-party. Two of the concessions are part of the Arista Mine, while the third concession comprises the Margaritas property. In November 2023, the royalties related to the lease agreement were renegotiated, reducing the net smelter return royalty from 4% to 3% for production sold in the form of gold/silver doré, and from 5% to 3% for production sold in concentrate form. Subject to meeting minimum exploration requirements, there is no expiration term for the lease. The Company may terminate the lease at any time upon written notice to the lessor, and the lessor may terminate it if the Company fails to fulfill any of its obligations, which primarily consist of paying the appropriate royalty to the lessor.

In August 2003, initial drilling and exploration programs commenced at the Arista Mine. By the end of 2024, the Company had drilled a total of 1,881 core holes (both surface and underground) totaling 495,032 meters and 166 reverse circulation holes totaling 14,367 meters, for a grand total of 2,047 holes totaling 509,399 meters.

Gold Resource Corporation

35

Table of Contents

DDGM Ore Terminal

In 2010, additional concessions were acquired from a third-party at no additional cost, which are subject to a 2% royalty. The Company filed for and received additional concessions from the Mexican government which are also not part of the concessions leased or acquired from the third-party. Two concessions are considered within the Arista Mine.

Location and Access: The Arista Mine is located in the Sierra Madre del Sur Mountains of southern Mexico in the central part of the State of Oaxaca. The property is located along a major paved highway approximately 120 kilometers southeast of Oaxaca City, the state’s capital city. The property is approximately four kilometers northwest from the village of San Jose de Gracia. The Company has constructed gravel and paved roads from the village to the mine and processing facility, which provide adequate access to the property.

The climate of the Arista Mine area is dry and warm to very warm with most rainfall occurring in June through September, and annual precipitation averaging 423.7 mm. The average yearly temperature is 26.6 degrees centigrade. The area is very rocky with arid vegetation. Subsistence farming occurs, and the main agricultural crop is agave cactus that is cultivated for the production of mezcal.

Gold Resource Corporation

36

Table of Contents

Geology and Mineralization: The Arista Mine is located in the San Jose de Gracia Mining District in Oaxaca. Multiple volcanic domes of various scales, and likely non-vented intrusive domes, dominate the district geology. These volcanogenic features are imposed on a pre-volcanic basement of sedimentary rocks. Gold and silver mineralization in this district is related to the manifestations of this classic volcanogenic system and is considered epithermal in character.

Historically, the Company has produced ore from two locations on the Arista Mine, the open pit mine and the underground mine. The open pit mineralization was considered low sulfidation epithermal-type consisting primarily of gold with some silver and no base metals. In 2011, mining activities were completed in the open pit, and it is now being backfilled and reclaimed by filtered dry stack tailings deposition. The Arista underground mine mineralization is considered intermediate epithermal-type consisting of gold, silver, copper, lead, and zinc. The host rock in the Arista vein system is primarily andesite.

Facilities: The processing facility and other infrastructure at the Arista Mine was constructed for approximately $35.0 million in 2009, and the processing facility was expanded in 2012 and 2013 for an additional $23.0 million. The flotation mill expansion, completed at the end of 2013, increased the number of flotation cells, added a second ball mill to allow for additional processing capacity, and added a Knelson gravity concentrator. In 2014, a doré processing facility was completed. In 2019, an increase in pumping capacity to the cyclones in the plant resulted in plant capacity increasing to nominal 2,000 tonnes per day. The DDGM processing facility is flexible in its ability to process several types of mineralization. It has a differential flotation section capable of processing polymetallic ore and producing up to three separate concentrate products. The facility also has an agitated leach circuit capable of producing gold and silver doré.

The Company obtained water rights from the Mexican government for an amount of water that it believes is sufficient to meet its operating requirements and pump it approximately five kilometers to the site from a permitted well located near the Totolapam River.

Gold Resource Corporation

37

Table of Contents

Additional improvements at the site include electrical power lines connecting to the Mexican national power grid, installation of backup diesel generation power plants and switch gear, paving a three-kilometer section of the road from the mine to the processing facility, construction of a surface maintenance garage and fuel station, construction of haul roads from the mine site to the processing facility, office space at the processing facility, an assay lab, an exploration office, tailings impoundment facilities and lift, a paste fill plant, mine camp facilities, the filtration plant, the dry stack facility, and other infrastructure.

Exploration Activities: In 2024, an underground diamond drilling campaign at the Arista Mine was successfully executed, completing 87 diamond drill holes totaling 12,761 meters. This program included 63 underground ore-control drill holes, totaling 4,974 meters, focused on upgrading Mineral Resources to Mineral Reserves in multiple veins within the Arista and Switchback vein systems. Additionally, 22 underground infill drill holes, totaling 7,348 meters, were completed to upgrade previously defined inferred Mineral Resources to measured and indicated Mineral Resources. This effort delineated and better defined multiple sub-parallel veins within the Three Sisters and North Arista vein systems. Drilling upgraded several high-grade zones up- and down-dip, as well as along strike from existing workings, both within and peripheral to existing Mineral Resources.

Underground expansion drilling activities at the Arista Mine during 2024 included the completion of one additional drill hole totaling 324 meters. This expansion drilling aimed to test the up-dip extent of the Sadie 2 vein within the Three Sisters vein system, successfully identifying additional inferred Mineral Resources an additional 80 meters vertically above previously defined limits. Additionally, although classified as infill, two of the drill holes confirmed the up-dip mineralized extensions of the Sandy 1 and Sandy 2 veins, approximately 40 meters up-dip and to the north-west of previous drilling. These newly identified mineralized up-dip extensions of the Three Sisters vein system remain open. Additionally, one geo-technical hole was drilled totaling 115 meters, in support of the construction of a ventilation raise. On August 1, 2024, infill and expansion drilling was suspended to conserve cash; however, diamond drilling for ore-control purposes at the Arista Mine continued uninterrupted throughout the year.

Both the Arista and Switchback vein systems extend over 1.5 kilometers in strike length and remain open along strike, as well as up- and down-dip. The Three Sisters vein system, currently comprising 10 veins, including the recently discovered Gloria vein, is located at the northern limit of the Arista Mine underground workings, between the Switchback and Arista vein systems. The Three Sisters vein system currently has a defined strike length of over 750 meters, and remains open along strike, as well as up- and down-dip. Infill and expansion drilling in 2025 will continue to focus on expanding resources in the Three Sisters vein system as well as in the Splay 31 vein in the northern extension of the Arista vein system.

Surface exploration activity during 2024 focused on evaluating and prioritizing advanced-stage projects within the 551 km2 land package controlled by DDGM surrounding the Arista Mine. This included re-processing historical geologic information consisting of mapping, sampling, and geophysics and drill data from various projects such as Rey, Alta Gracia, Margaritas, Chamizo, and Jabali. Additionally, prospects near the Arista Mine were re-evaluated for their near-term potential, aiming to define additional near-mine drill targets. The Company’s continued investment in exploration efforts demonstrates its commitment to long-term investment in Oaxaca, Mexico.

Please see Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operationsfor additional information concerning mining operations at the Alta Gracia project.

Alta Gracia Mine

Background: In 2008, the Company was granted claims adjacent to the Margaritas property in the Alta Gracia Mining District by filing three mining concessions known as the David Fracción I, the David Fracción II, and La Herradura, totaling 5,175 hectares.

As of December 31, 2016, proven and probable Mineral Reserves had been established for the Mirador vein at the Alta Gracia Mine. In July 2017, mine development reached the economic ore zone of the Mirador vein, and mining began.

Gold Resource Corporation

38

Table of Contents

Location and Access: The Alta Gracia project is approximately 20 kilometers northeast of the village of San Pedro Totalapam, in the Municipality of San Pedro Totolapam. Access to the project is by a gravel road that departs the paved highway approximately 13 kilometers east of the village of San Pedro Totalapam. The haulage distance by road from Alta Gracia to the DDGM processing facility is approximately 32 kilometers.

Geology and Mineralization: The sedimentary and volcanic units mapped at Alta Gracia are similar to those observed at the Arista Mine. The district is dominated by tertiary-age rhyolite flows and tuffs, which are underlain by andesite flows and tuffs. Granodiorite and felsic intrusives are observed to crop out to the north and east of the Mirador vein. Known vein occurrences at Alta Gracia are mainly hosted in andesite and rhyolite. The veins at Alta Gracia are considered low sulfidation epithermal mineralization with economic values only for gold and silver.

Facilities: During 2016, the Company received the operating permit to commence production from the Mirador vein at Alta Gracia. In 2017, two mine portals were developed to provide access to the Mirador vein. Mine site offices and a mobile equipment maintenance shop were established. Additionally, a diesel power generation plant, a compressed air system, and a mine water pumping station were developed and put into service. In 2018, old workings were improved to create a second access to the vein system called Independencia. The portal for this access is located approximately 500 meters southwest of the Mirador portal. Development was established to access the mineralization, delineated by drill campaigns completed during 2018 and 2019 on the Independencia vein.

Ore from the Alta Gracia Mine, primarily silver ore, was transported by contracted haul trucks to and processed at the agitated leach plant at the DDGM processing facility, with the final product being doré.

Exploration Activities: In 2024, surface exploration activity over the Alta Gracia property focused on reviewing and interpreting results from previous surface mapping and soil geochemical sampling campaigns. These recent campaigns were conducted in the Aguacatillo prospect, located to the south-west, west, and north-west of the Independencia and

Gold Resource Corporation

39

Table of Contents

Mirador vein systems, as well as in the La Fundación prospect area, situated immediately south-southeast of the Independencia and Mirador vein systems. Both programs successfully identified several gold- and silver-in-soil anomalous zones. These findings will guide follow-up detailed mapping and additional geochemical sampling to pinpoint potential near-mine targets for future surface drilling.

Exploration Properties

Margaritas Property

The Margaritas property is made up of the La Tehuana concession, which is approximately 925 hectares, located within the 55-kilometer San Jose structural corridor and adjacent to the Arista Mine.

In 2024, the Company continued to review results from previous surface drilling, surveying, detailed geological mapping, and rock chip channel sampling for the Margaritas property. The Company completed the work required to maintain the claims during 2024, with work focused on analysis of spectral and geophysical information to identify new targets of interest. The Company expects to target a similar amount of work in 2025, along with identifying opportunities to strengthen its relationship in the local communities.

ChamizoProperty

In June 2011, the Company acquired the Chamizo exploration concession from the Mexican government, covering approximately 17,898 hectares. In March 2013, the Company acquired the San Pedro Fraccion 2 concession from Almaden Minerals, Ltd. (“Almaden”), consisting of approximately 1,860 hectares including the Cerro Colorado (also known as Jabali) prospect. The Cerro Colorado (Jabali) prospect is surrounded by the Chamizo concession, and the Company includes it as part of the Chamizo property. The Chamizo Property is adjacent to the Alta Gracia property. Any future production from the San Pedro Fraccion 2 concession is subject to a 2% net smelter return royalty in favor of Almaden.

In 2022, surface mapping and geochemical sampling commenced in the Jabali prospect area within the San Pedro Fraccion 2 concession. Results of this work were reviewed and analyzed in 2023 to plan further detailed follow-up geologic mapping and target evaluation. Different targets within the Chamizo property as a whole will continue to be evaluated in 2025, while also focusing on identifying opportunities to strengthen relationships in the local communities to facilitate future work.

FuegoProperty

In March 2013, the Company acquired the San Pedro Fraccion 1 concession from Almaden, consisting of approximately 2,554 hectares including the Fuego property. Any future production from this concession is subject to a 2% net smelter return royalty in favor of Almaden. The Fuego property, located south of the Alta Gracia and Chamizo properties, was included in the property-wide airborne geophysical survey conducted in 2013. Geologic mapping and surface sampling have been conducted on the Fuego property, meeting the necessary work requirements to maintain the concession. While the Company does not anticipate significant exploration activities at Fuego in 2025, it plans to perform the required work to maintain the concession.

ReyProperty

The Rey property consists of concessions on the far north-west end of the 55-kilometer San Jose structural corridor in the State of Oaxaca known as El Rey, El Virrey, La Reyna, and El Marquez, totaling approximately 2,335 hectares. The Company acquired the El Virrey concession from a third-party, which is subject to a 2% net smelter return royalty. The Company obtained the remaining concessions by staking claims and filing for concessions with the Mexican government.

The Rey property is located approximately 64 kilometers by road from the Arista Mine. Currently, there is no plant or equipment on the Rey property. If exploration proves successful, any ore extraction will likely require an underground

Gold Resource Corporation

40

Table of Contents

mine, with the ore to be trucked to the DDGM facility for processing. To date, the Company has drilled 48 core holes, totaling 5,273 meters, at the Rey property. In early 2012, the Company completed a small amount of work to finish refurbishing and extending an existing shaft on the property to facilitate underground exploratory drilling. However, work ceased later that year following a request to obtain additional approvals from local community agencies.

In 2025, the Company plans to continue working with local agencies to understand and address any concerns of the community, but otherwise the Company has no assurance that exploration activities will resume in the near term. Once community support is secured, the Company plans to conduct follow-up drilling and exploration based on the 2007 and 2008 drilling results. Meanwhile, the Company will complete the necessary work to maintain the claims in good standing.

Mining Concessions and Regulations in Mexico

Mineral rights in Mexico belong to the Mexican federal government and are administered pursuant to Article 27 of the Mexican Constitution. All of the mining concessions are exploitation concessions, which may be granted or transferred to Mexican citizens and corporations. The Company’s leases or concessions are held by the Mexican subsidiary DDGM. Exploitation concessions have a term of 50 years and can be renewed for another 50 years. Concessions grant the Company the right to explore and exploit all minerals found in the ground. Maintenance of concessions requires the semi-annual payment of mining duties (due in January and July) and the performance of assessment work, on a calendar year basis, with assessment work reports required to be filed in the month of May for the preceding calendar year. The amount of mining duties and annual assessments are set by regulation, may increase over the life of the concession, and include periodic adjustments for inflation. Failure to pay the mining duties can lead to the cancelation of the relevant concession.

Mexican mining law does not require payment of finder’s fees to the government, except for a discovery premium in connection with national Mineral Reserves, concessions and claims, or allotments contracted directly from the Mexican Geological Survey. None of the claims held by DDGM are under such a discovery premium regime.

Ejido Lands and Surface Right Acquisitions in Mexico

Surface lands within DDGM are Ejido lands (agrarian cooperative lands granted by the federal government to groups of Campesinos pursuant to Article 27 of the Mexican Constitution of 1917). Prior to January 1, 1994, Ejidos could not transfer Ejido lands into private ownership. Amendments to Article 27 of the Mexican Constitution in 1994 now allow individual property ownership within Ejidos and allow Ejidos to enter into commercial ventures with individuals or entities, including foreign corporations. The Company has an agreement with the local San Pedro Totolapam Ejido, allowing exploration and exploitation of mineralization at the Arista Mine and some of the surrounding properties.

Mexican law recognizes mining as a land use generally superior to agriculture. However, the law also recognizes the rights of the Ejidos to compensation in the event mining activity interrupts or discontinues their use of the agricultural lands. Compensation is typically made in the form of a cash payment to the holder of the agricultural rights. The amount of such compensation is generally related to the perceived value of the agricultural rights as negotiated in the first instance between the Ejidos and the owner of the mineral rights. If the parties are unable to reach an agreement on the amount of the compensation, the decision can be referred to the government.

The Company has established surface rights agreements with the San Pedro Totolapam Ejido and the individuals impacted by the proposed operations which allow disturbance of the surface where necessary for the exploration activities and mining operations.

Office Facilities

The Company constructed an administrative office building adjacent to the DDGM processing facility and a mine office adjacent to the Arista Mine portal. The Company also leases approximately 3,000 square feet of office space in Oaxaca City, Oaxaca. The lease commenced in 2012 and was renewed in December 2024 through the end of 2027.

Gold Resource Corporation

41

Table of Contents

Back Forty Project

The Back Forty Project is an advanced Exploration Stage Property located in Menominee County, Michigan, USA in the mineral rich Penokean Volcanic Belt. The property is made up of approximately 1,304 hectares (3,222 acres) of private and public (State of Michigan) mineral lands. The Back Forty Project is centered at latitude 46 degrees 27 North and longitude 87 degrees 51 West. Because of the exploratory nature of the property, the Company does not currently consider the Back Forty Project to be independently material to the Company.

Background: On December 10, 2021, the Company successfully completed the acquisition of all the issued and outstanding common shares of Aquila. Aquila’s principal asset is its 100% interest in the Back Forty Project located in Menominee County, Michigan, USA. The Back Forty Project has a polymetallic (gold, silver, copper, lead, and zinc) Volcanogenic Massive Sulfide deposit. The Back Forty Project controls surface and mineral rights through ownership, leases with the State of Michigan, and royalties with private parties.

Optimization work related to the metallurgy and the economic model for the Back Forty Project was completed, and the Company released the Back Forty Project Technical Report Summary in October 2023. Results of the work indicate a more robust economic project with no planned impacts to wetlands that is more protective of the environment, which should facilitate a successful mine permitting process. The Board continues to evaluate options that could lead to the development of the Back Forty Project. Please see Item 2. Properties for additional information.

Permitting: The State of Michigan governs and regulates the permitting process as it relates to the Back Forty Project.

Community: Tribal engagement has been very important to the Back Forty Project, especially considering the cultural resources near the site. Outreach to local Tribes, including the Menominee Indian Tribe of Wisconsin, began as

Gold Resource Corporation

42

Table of Contents

early as June of 2010. Aquila conducted extensive archeological studies throughout the affected and unaffected areas. As agreed with the authorities, Aquila identified areas for permanent protection and established appropriate buffers.

Office Facilities: In Michigan, the Company owns and operates an administrative office building in Stephenson, MI and another field office close to the location of the potential future mine facilities.

ITEM 3.LEGAL PROCEEDINGS

In February 2020, a local Ejido community (who claim to be an indigenous community) filed an injunction against the Mexican federal government through which they demanded the cancelation of several concession titles, including concessions currently granted to DDGM. The federal government ordered a suspension to prevent work related to excavating, drilling, opening tunnels, and exploiting the Mineral Resources on the surface and subsoil of the concessions named in the injunction in the lands of the indigenous community. Presently, DDGM does not perform such works in the named concessions in lands of the indigenous community. The lawsuit filed in February 2020 at the First District Courthouse in the state of Oaxaca remains under review by the courts.

ITEM 4.MINE SAFETY DISCLOSURES

Not applicable.

Gold Resource Corporation

43

Table of Contents

PART II

Market Information

The Company’s common stock trades on the NYSE American under the symbol “GORO”.

On April 4, 2025, there were 120,442,686 shares of Gold Resource Corporation, which were held by approximately 200 holders of record.

Transfer Agent

Computershare Trust Company, N.A. is the transfer agent for the common stock. The principal office of Computershare is located at 6200 S. Quebec St., Greenwood Village, CO 80111, and its telephone number is (303) 262-0600. Correspondence should be mailed to P.O. Box 43078, Providence, RI 02940-3078 or couriered to 150 Royall St., Suite 101, Canton, MA 0202.

Dividend Policy

Approximately $123.0 million in dividends have been returned to shareholders since commercial production began at DDGM in July 2010. As of February 13, 2023, to conserve cash for future development and exploration, thus maximizing shareholder value, the Company suspended the quarterly dividend payments until such time that it may become practicable to reinstate them.

ITEM 6.

RESERVED.

Gold Resource Corporation

44

Table of Contents

Except for the historical information, the following discussion contains forward-looking statements that are subject to risks and uncertainties. The Company cautions you not to put undue reliance on any forward-looking statements, which speak only as of the date of this report. See “Forward-Looking Statements” above. The Company’s actual future results or actions may differ materially from these forward-looking statements for many reasons, including but not limited to the risks described in “Item 1A. Risk Factors” and elsewhere in this annual report and other reports filed by the Company with the SEC. This discussion and analysis of the financial condition and results of operations should be read in conjunction with the audited consolidated financial statements and related notes included in this report and with the understanding that the actual future results may be materially different from what the Company currently expects.

Introduction

The Company is a mining company that pursues gold and silver projects that are expected to achieve both low operating costs and high returns on capital. DDGM holds six properties and includes mineral production primarily from the Arista underground mine. The Company produces gold and silver doré and metal concentrates which contain precious metals of gold and silver and base metals of copper, lead, and zinc.

The following discussion summarizes the results of operations for the two fiscal years ended December 31, 2024 and 2023 and the financial condition as of December 31, 2024 and 2023, with a particular emphasis on the year ended December 31, 2024.

The discussion also presents certain non-GAAP financial measures that are important to management in its evaluation of the operating results and which are used by management to compare the performance with what the Company perceives to be peer group mining companies and is relied on as part of management’s decision-making process. Management believes these measures may also be important to investors in evaluating the Company’s performance. For a detailed description of each of the non-GAAP financial measures, please see the discussion under Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations below.

In the financial statements, the Company reports the sale of all precious and base metals as revenue, and it periodically reviews revenue streams to ensure that this treatment remains appropriate. The Company considers precious metals to be the long-term primary driver of its economic decisions and believes that base metals are secondary products for non-GAAP financial measures.

Gold equivalent is determined by taking gold ounces produced and sold, plus silver ounces produced and sold, converted to gold equivalent ounces using the gold to silver average realized price ratio for the period.

Gold Resource Corporation—Management’s Discussion and Analysis of Financial Condition and Results of Operations

45

Table of Contents

Results of Operations

Don David Gold Mine

Production Statistics

Mine activities during 2024 included development and ore extraction from the Arista Mine. The following table summarizes certain production statistics about the Don David Gold Mine for the periods indicated:

​ ​ ​ ​ ​ ​ ​

​ ​ For the year ended December 31,

Source: SEC EDGAR (public domain) · 10-K for the period ended 2024-12-31, filed 2025-04-08 · accession 0001558370-25-004602

Filing HTML rendered to line-structured narrative text by the shipped reducer (datafeeds.edgar_fulltext.visible_text, keep_table_headers=True): scripts and inline-XBRL headers are dropped, and table content is reduced to its short label cells — numeric table data is not rendered and is therefore not counted. The same rendering is used for every year, so a year-over-year comparison is like for like.

The text is our rendering of the filing, not a facsimile: original pagination, typography and tables are not reproduced, and the numbers live in the financial statements (FA).

The outline locates item HEADINGS in this document. Only Items 1A and 7 have certified boundaries elsewhere in the terminal (the redline and the narrative-overlap number); every span here runs from one heading found to the next heading found.

How the outline was chosen. It is the longest chain of item headings that runs forward through both the document and the standard item order: 18 headings are on that chain and 16 further heading-shaped lines are not — the table-of-contents echo of every item, cross-references and exhibit-list mentions. Each entry's length is measured from its heading to the next heading on the chain.