UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended June 30, 2026

OR

For the transition period from ________ to ________

Commission File Number. 001-39278

(303) 534-1030

(Registrant's telephone number, including area code)

________________________________________________________________________ 

(Former name, former address, and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Indicate by checkmark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒     NO ☐ 

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒     NO ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). YES ☐     NO ☒

There were 94,684,463 shares of $0.01 par value common stock outstanding as of August 06, 2026.

TABLE OF CONTENTS

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements

SOLITARIO RESOURCES CORP.

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

See Notes to Unaudited Condensed Consolidated Financial Statements

SOLITARIO RESOURCES CORP.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

See Notes to Unaudited Condensed Consolidated Financial Statements

SOLITARIO RESOURCES CORP.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

See Notes to Unaudited Condensed Consolidated Financial Statements

SOLITARIO RESOURCES CORP.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with the information contained in the consolidated financial statements of Solitario for the years ended December 31, 2025 and 2024, and Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in Solitario’s 2025 Annual Report. Solitario's financial condition and results of operations as of and through June 30, 2026 are not necessarily indicative of what may be expected in future periods. Unless otherwise indicated, all references to dollars are to U.S. dollars.

(a) Business Overview and Summary

We are an exploration stage company as defined by rules issued by the SEC, with a focus on the acquisition of precious and base metal properties with exploration potential and the development or purchase of royalty interests. Currently our primary focus is the exploration of our precious metals, zinc and other base metal exploration mineral properties. However, we continue to evaluate other mineral properties for acquisition, and we hold a portfolio of mineral exploration properties and assets for future sale, joint venture or on which to create a royalty prior to the establishment of proven and probable reserves. Although our mineral properties may be developed in the future by us, through a joint venture or by a third party, we have never developed a mineral property. In addition to focusing on our current mineral exploration properties, from time-to-time we also evaluate potential strategic transactions for the acquisition of new precious and base metal properties and assets with exploration potential.

Our current geographic focus for the evaluation of potential mineral property assets is in North and South America; however, we have conducted property evaluations for potential acquisition in other parts of the world. At June 30, 2026, we consider our Golden Crest project in South Dakota, our carried interest in the Florida Canyon project in Peru, and our interest in the Lik project in Alaska to be our core mineral property assets. In addition, we own the Cat Creek project in Colorado and the Bright Angel project in Colorado, neither of which have been explored to the degree of any of our three core assets, described above. We are conducting exploration activities in the United States on our own at the Golden Crest project, the Cat Creek project and the Bright Angel project and through joint ventures operated by our partners in Peru at the Florida Canyon project and in Alaska at the Lik project. From time-to-time, we also conduct potential acquisition evaluations in other countries in South and North America.

We have recorded revenue in the past from the sale of mineral properties, however revenues and / or proceeds from the sale or joint venture of properties or assets, although generally significant when they have occurred in the past, have not been a consistent source of revenue and would only occur in the future, if at all, on an infrequent basis. We have reduced our exposure to the costs of our exploration activities in the past through the use of joint ventures. Although we anticipate that the use of joint ventures to fund some of our exploration activities will continue for the foreseeable future, we can provide no assurance that these or other sources of capital will be available in sufficient amounts to meet our needs, if at all.

As of June 30, 2026, we have balances of cash and short-term investments that we anticipate using, in part, to (i) fund costs and activities intended to further the exploration of our Lik project, Florida Canyon project, Golden Crest project, the Cat Creek project and the Bright Angel project; (ii) conduct reconnaissance exploration and (iii) potentially acquire additional mineral property assets. The fluctuations in precious metal and other commodity prices contribute to a challenging environment for mineral exploration and development, which has created opportunities as well as challenges for the potential acquisition of advanced mineral exploration projects or other related assets at potentially attractive terms.

The extent to which our business, including our exploration and other activities and the market for our securities, may be impacted by public health threats, rising geopolitical tension, general economic uncertainty and market volatility will depend on future developments, which are highly uncertain and cannot be predicted at this time. Please see Part I, Item 1A, “Risk Factors,” in our 2025 Annual Report.

(b) Results of Operations

Comparison of the three months ended June 30, 2026 to the three months ended June 30, 2025

We had a net loss of $1,830,000 or $0.02 per basic and diluted share for the three months ended June 30, 2026 compared to a net loss of $943,000 or $0.01 per basic and diluted share for the three months ended June 30, 2025. As explained in more detail below, the primary reasons for the increase in our net loss in the three months ended June 30, 2026 compared to the net loss during the three months ended June 30, 2025 were (i) an increase in exploration expense to $1,508,000 during the three months ended June 30, 2026 compared to exploration expense of $671,000 during the three months ended June 30, 2025;(ii) an increase in general and administrative expense to $451,000 during the three months ended June 30, 2026 compared to general and administrative expense of $388,000 during the three months ended June 30, 2025; and (iii) a decrease in the realized and unrealized gain on marketable equity securities to $56,000 during the three months ended June 30, 2026 compared to a realized and unrealized gain on marketable equity securities of $201,000 during the three months ended June 30, 2025. Partially offsetting these increases in our net loss compared to the prior year period were (i) an increase in interest and dividend income to $77,000 during the three months ended June 30, 2026 compared to interest and dividend income of $52,000 during the three months ended June 30, 2025; and (ii) no loss on derivative instruments during the three months ended June 30, 2026 compared to a loss on derivative instruments of $130,000 during the three months ended June 30, 2025. Each of the major components of these items is discussed in more detail below.

Our net exploration expense increased to $1,508,000 during the three months ended June 30, 2026 compared to exploration expense of $671,000 during the three months ended June 30, 2025 primarily as a result of (i) an increase in exploration expense at our Golden Crest project to $1,404,000 during the three months ended June 30, 2026 compared to $635,000 during the three months ended June 30, 2025 as a result of earlier commencement of drilling at the Golden Crest project during the second quarter of 2026, compared to the drilling in the second quarter of 2025; (ii) an increase in exploration expense at our Lik project in Alaska during the three months ended June 30, 2026 of $25,000 compared to exploration expenditures of $19,000 during the three months ended June 30, 2025; (iii) an increase in exploration expense at our Cat Creek project to $28,000 during the three months ended June 30, 2026 compared with $10,000 during the same period of 2025 and (iv) an increase in exploration expense at our Bright Angel project to $44,000 during the three months ended June 30, 2026, with no exploration expenses during the same period of 2025. Drilling commenced in May 2026 at our Golden Crest project which resulted in approximately $1,140,000 in drilling expenditures in the three months ended June 30, 2026 compared to $347,000 in drilling expenditures in the three months ended June 30, 2025 as drilling did not commence until June in the three months ended June 30, 2025. We have budgeted approximately $5,673,000 for the full-year exploration expenditure for 2026, which includes approximately $2,217,000 for drilling at the Golden Crest Project. We expect our full-year exploration expenditure for 2026 to be higher than our full-year exploration expenditure for 2025.

Exploration expense (in thousands) by project consisted of the following:

General and administrative costs, excluding stock option compensation costs, discussed below, were $351,000 during the three months ended June 30, 2026 compared to $263,000 during the three months ended June 30, 2025. The major components of our general and administrative costs were (i) salaries and benefit expense of $185,000 during the three months ended June 30, 2026 compared to salary and benefit costs of $79,000 during the three months ended June 30, 2025 as a result of salary increases and bonuses paid in 2026; (ii) legal and accounting expenditures of $54,000 in the three months ended June 30, 2026 compared to $61,000 in the three months ended June 30, 2025; (iii) office rent and expenses of $39,000 during the three months ended June 30, 2026 compared to $17,000 during the three months ended June 30, 2025; and (iv) travel and shareholder relation costs of $73,000 during the three months ended June 30, 2026 compared to $106,000 during the three months ended June 30, 2025. We anticipate the full-year general and administrative costs will be comparable for 2026 and 2025.

We recorded $100,000 of stock option compensation expense for the amortization of unvested grant date fair value with a credit to additional paid-in-capital during the three months ended June 30, 2026 compared to $125,000 of stock option compensation expense during the three months ended June 30, 2025. These non-cash charges related to the expense for vesting on stock options outstanding during the three months ended June 30, 2026 and 2025. The primary reason for the decrease in stock option compensation expense during the three months ended June 30, 2026 compared to the three months ended June 30, 2025 was as a result of certain options from prior years becoming fully vested or forfeited in prior periods with no grant date fair value amortized on those option during the three months ended June 30, 2026 compared to 2025. The remaining expense related to the amortization of grant date fair values of outstanding unvested options for the three months ended June 30, 2026 and 2025 was comparable. See Note 10, “Employee Stock Compensation Plans,” above, for additional information on our stock option expense.

We recorded a realized and unrealized gain on marketable equity securities of $56,000 during the three months ended June 30, 2026 compared to a realized and unrealized gain on marketable equity securities of $201,000 during the three months ended June 30, 2026. The realized and unrealized gains and losses are detailed below.

We recorded a non-cash unrealized loss on marketable equity securities of $82,000 during the three months ended June 30, 2026 compared to an unrealized loss on marketable equity securities of $1,150,000 during the three months ended June 30, 2025. The non-cash unrealized loss on marketable equity securities of $82,000 during the three months ended June 30, 2026 was as a result of (i) a decrease in the fair value of 5,700 shares of Vox Royalty common stock of $3,000 based on quoted market prices, and (ii) the transfer of $138,000 of prior unrealized gain to realized gain on the sale of 34,300 shares of Vox Royalty common stock. These decreases were partially offset by (i) an increase in the fair value of our 7,750,000 shares of Vendetta Mining Corp. (“Vendetta”) common stock of $27,000 during the three months ended June 30, 2026 based on quoted market prices and (ii) an unrealized increase of $32,000 in the value of the 34,300 shares of Vox Royalty sold during the three months ended June 30, 2026.

The non-cash unrealized loss during the three months ended June 30, 2025 of $1,150,000 was related to (i) the transfer $915,000 of unrealized gain on our holdings of Kinross common stock to realized gain upon the sale of shares of Kinross during the three months ended June 30, 2025; (ii) the transfer of $32,000 of unrealized gain on our holdings of Vox Royalty common stock upon the sale of the shares of Vox Royalty during the three months ended June 30, 2025; and (iii) a decrease of $264,000 in the value of the holdings of our Kinross shares during the three months ended June 30, 2025 to the date of sale of the shares. Partially offsetting this non-cash unrealized loss on marketable equity securities during the three months ended June 30, 2025 was (i) an increase of $6,000 on our Vox Royalty common shares sold during the three months ended June 30, 2025 to the date of sale; (ii) an increase of $31,000 in the value of our holdings of Vendetta common stock during the three months ended June 30, 2025; and (iii) an increase of $24,000 in the value of our remaining holdings of Vox Royalty common stock during the three months ended June 30, 2025.

During the three months ended June 30, 2026 we recorded a realized gain on sale of $138,000 from the sale of 34,300 shares of Vox Royalty common stock compared to the three months ended June 30, 2025 when we recorded a realized gain of $1,319,000 from the sale of 100,000 shares of Kinross common stock and a realized gain of $32,000 from the sale of 34,055 shares of Vox Royalty common stock.

We recorded interest and dividend income of $77,000 during the three months ended June 30, 2026 compared to interest income of $52,000 during the three months ended June 30, 2025. This increase was primarily due to an increase in our funds held in our money market account during the three months ended June 30, 2026 compared to the funds held in our money market account during the three months ended June 30, 2025.

During the three months ended June 30, 2025, we recorded a non-cash loss on derivative instruments of $130,000 with no comparable income or loss during the three months ended June 30, 2026, as we no longer held Kinross calls. The Kinross calls were settled upon the sale of our holdings of Kinross common stock, discussed above. See Note 7, “Derivative Instruments,” above for a discussion of our Kinross calls.

We regularly perform evaluations of our mineral property assets to assess the recoverability of our investments in these assets. All long-lived assets are reviewed for impairment whenever events or circumstances change which indicate the carrying amount of an asset may not be recoverable utilizing guidelines based upon future net cash flows from the asset as well as our estimates of the geological potential of an early-stage mineral property and its related value for future sale, joint venture or development by us or others. During the three and six months ended June 30, 2026 and 2025, we recorded no property impairments.

We recorded no income tax expense or benefit during the three and six months ended June 30, 2026 or 2025 as we provide a valuation allowance for the tax benefit arising out of our net operating losses for all periods presented. As a result of our administrative expenses and exploration activities, we anticipate we will not have currently payable income taxes during 2026. In addition to the valuation allowance discussed above, we provide a valuation allowance for our foreign net operating losses, which are primarily related to our exploration activities in Peru. We anticipate we will continue to provide a valuation allowance for these net operating losses until we are in a net tax liability position with regard to those countries where we operate or until it is more likely than not that we will be able to realize those net operating losses in the future.

Comparison of the six months ended June 30, 2026 to the six months ended June 30, 2025

We had a net loss of $2,324,000 or $0.03 per basic and diluted share for the six months ended June 30, 2026 compared to a net loss of $1,454,000 or $0.02 per basic and diluted share for the six months ended June 30, 2025. As explained in more detail below, the primary reasons for the increase in our net loss were (i) an increase in exploration expense to $1,690,000 during the six months ended June 30, 2026 compared to exploration expense of $910,000 during the six months ended June 30, 2025 and (ii) a decrease in the realized and unrealized gain on marketable equity securities to $58,000 during the six months ended June 30, 2026, compared with a realized and unrealized gain on marketable equity securities of $586,000 during the six months ended June 30, 2025. Partially offsetting these increases in our net loss during the six months ended June 30, 2026 compared to the net loss during the six months ended June 30, 2025 were (i) a decrease in general and administrative expense to $827,000 during the six months ended June 30, 2026 compared to general and administrative expense of $878,000 during the six months ended June 30, 2025; (ii) no loss on derivative instruments during the six months ended June 30, 2026 compared to a loss on derivative instruments of $336,000 during the six months ended June 30, 2025; (iii) an increase in interest and dividend income to $142,000 during the six months ended June 30, 2026 compared to interest and dividend income of $98,000 during the six months ended June 30, 2025 and (iv) a decrease in depreciation to $7,000 during the six months ended June 30, 2026 compared to depreciation expense of $14,000 during the six months ended June 30, 2025. The significant changes for these items are discussed in more detail below.

Our net exploration expense increased to $1,690,000 during the six months ended June 30, 2026 compared to $910,000 during the six months ended June 30, 2025. The primary reasons for the increase were (i) exploration expenditures at our Golden Crest project increased to $1,553,000 during the six months ended June 30, 2026 compared to $851,000 during the six months ended June 30, 2025 as our drilling program in 2026 started earlier in the six months ended June 30, 2026, with drilling and related expenditures of approximately $1,140,000 through June 30, 2026 compared with $347,000 through June 30, 2025; (ii) an increase in our exploration expenditures at our Cat Creek project to $29,000 during the six months ended June 30, 2026 compared to $15,000 during the six months ended June 30, 2025 and (iii) expenditures at our Bright Angel project of $64,000 during the six months ended June 30, 2026, with no similar amount during the six months ended June 30, 2025. We anticipate a significant increase in exploration expenditures at our Cat Creek project in the second half of 2026 primarily due to planned drilling on the project, as discussed above.

General and administrative costs, excluding stock option compensation costs discussed below, were $660,000 during the six months ended June 30, 2026 compared to $627,000 during the six months ended June 30, 2025. The major components of the costs were (i) salary and benefit expense during the six months ended June 30, 2026 of $258,000 compared to salary and benefit expense of $197,000 during the six months ended June 30, 2025; (ii) legal and accounting expenditures of $121,000 during the six months ended June 30, 2026, compared to $114,000 during the six months ended June 30, 2025; (iii) office and other costs of $67,000 during the six months ended June 30, 2026 compared to $46,000 during the six months ended June 30, 2025; and (iv) travel and shareholder relation costs of $214,000 during the six months ended June 30, 2026 compared to $270,000 during the six months ended June 30, 2025.

During the six months ended June 30, 2026 and 2025, Solitario recorded $167,000 and $251,000, respectively, of stock option expense for the amortization of unvested grant date fair value with a credit to additional paid-in capital. The decrease during the six months ended June 30, 2026 was primarily related to a fewer options granted during 2025 compared to 2024, discussed above.

During the six months ended June 30, 2026 Solitario recorded a realized gain of $175,000 and unrealized loss on marketable equity securities of $117,000 netting to a realized and unrealized gain of $58,000 compared to a realized gain of $1,351,000 and unrealized loss of $765,000 netting to a realized and unrealized gain on marketable equity securities of $586,000 during the six months ended June 30, 2025. These are detailed below.

We recorded an unrealized loss on marketable equity securities of $117,000 during the six months ended June 30, 2026 primarily as a result of (i) an unrealized loss on the transfer of prior unrealized gain on the sale of 44,300 shares of Vox Royalty upon their sale of $175,000 and (ii) an unrealized loss during the six months ended June 30, 2026 of $2,000 on our holdings of 7,750,000 shares of Vendetta common stock. These losses were partially offset by (i) an increase in the value of our 5,700 shares of Vox Royalty of $17,000, and (ii) an unrealized gain of $43,000 on our holdings of 44,300 shares of Vox Royalty share through the date of their sale during the six months ended June 30, 2026.

The unrealized loss on marketable equity securities of $765,000 during the six months ended June 30, 2025 was primarily related to (i) the transfer of $915,000 of unrealized gain, as an unrealized loss, on our holdings of Kinross common stock to realized gain upon the sale of shares of Kinross during the three months ended June 30, 2025; and (ii) the transfer of $33,000 of unrealized gain, as an unrealized loss, on our holdings of Vox Royalty common stock upon the sale of the shares of Vox Royalty during the three months ended June 30, 2025. These unrealized losses on marketable equity securities were partially offset by (i) an increase in the value of our holdings of Kinross through the date of sale of $71,000; (ii) an increase in the value of our holdings of Vendetta common stock of $4,000 based on quoted market prices; and (iii) an increase in the value of our Vox Royalty common stock sold of $6,000 through the date of sale for the Vox Royalty shares sold and an increase in the value of remaining holdings of Vox Royalty common stock for the six months ended June 30, 2025 of $102,000.

Our realized gain on marketable equity securities of $175,000 during the six months ended June 30, 2026 was from the sale of 44,300 shares of Vox Royalty shares for net proceeds of $270,000. The realized gain of $1,351,000 during the six months ended June 30, 2025 was from (i) $915,000 transferred from unrealized gain upon the sale of 100,000 shares of Kinross, (ii) $33,000 transferred from unrealized gain upon the sale of Vox Royalty shares and (iii) the recognition of the proceeds of $403,000 for the settlement of the Kinross calls upon the sale of the Kinross shares.

We recorded interest and dividend income of $142,000 during the six months ended June 30, 2026 compared to interest and dividend income of $98,000 during the six months ended June 30, 2025. The increase in interest income was primarily related to an increase in our average outstanding balance of money market holdings during the six months ended June 30, 2026 compared to the six months ended June 30, 2025. We anticipate interest income will decrease during the remainder of 2026, as a result of the use of funds in the money market account to fund our exploration and general and administrative expenditures. See “Liquidity and Capital Resources” below for further discussion of our cash and short-term investment balances.

During the six months ended June 30, 2025, we recorded a non-cash loss on derivative instruments of $336,000 related to the Kinross calls held during the six months ended June 30, 2025 as a result of the increase in the underlying value of our holdings of Kinross common stock, discussed above. These calls were settled during the six months ended June 30, 2025 upon the sale of our holdings of Kinross, with no similar loss or gain on derivative instruments during the six months ended June 30, 2026.

(c) Liquidity and Capital Resources

Cash and Short-term Investments

As of June 30, 2026, we have $9,009,000 in cash and short-term investments. Our short-term investments are comprised of $8,500,000 invested in a money market account with a brokerage firm. We anticipate we will roll over that portion of our short-term investments not used for exploration expenditures, operating costs or mineral property acquisitions as they become due during the remainder of 2026. We intend to utilize a portion of our cash and short-term investments in our exploration activities and the potential acquisition of mineral assets over the next several years.

Investment in Marketable Equity Securities

Our marketable equity securities are carried at fair value, which is based upon market quotes of the underlying securities. At June 30, 2026, we owned 7,750,000 shares of Vendetta common stock and 5,700 shares of Vox common stock. At June 30, 2026, the Vendetta shares are recorded at their fair value of $55,000, and the Vox shares are recorded at their fair value of $27,000. During the six months ended June 30, 2026 we sold 44,300 shares of our Vox Royalty common stock for proceeds of $270,000 and recorded a realized gain on sale of $175,000. We sold our 100,000 shares of Kinross during the six months ended June 30, 2025 for net proceeds of $998,000, after settlement of our outstanding Kinross call, and recorded a realized gain on sale of $915,000, and we sold 34,055 shares of Vox Royalty shares for net proceeds of $106,000 and recorded a realized gain on sale of $33,000. We anticipate we may sell a portion of our holdings of marketable equity securities during the remainder of 2026 depending on cash needs and market conditions.

Working Capital

We had working capital of $8,584,000 at June 30, 2026 compared to working capital of $7,795,000 at December 31, 2025. Our working capital at June 30, 2026 consists primarily of our cash and cash equivalents, our short-term investments, discussed above, our investment in marketable equity securities of $82,000, and other current assets of $143,000, less our accounts payable of $650,000. The increase in our working capital from December 31, 2025 is primarily the result of our receipt of cash proceeds from sales of our common stock under the ATM Program and in a private placement that we completed in May 2026. As of June 30, 2026, our cash balances along with our short-term investments and marketable equity securities are adequate to fund our expected expenditures over the next year.

The nature of the mineral exploration business requires significant sources of capital to fund exploration, development and operation of mining projects. We will need additional capital if we decide to develop or operate any of our current exploration projects or any projects or assets we may acquire. We anticipate we would finance any such development through the use of our cash reserves, short-term investments, joint ventures, issuance of debt or equity, or the sale of our interests in other exploration projects or assets.

Stock-Based Compensation Plans

As of June 30, 2026, there were options outstanding from the 2013 Plan to acquire an aggregate of 1,825,000 shares of Solitario common stock, all with an exercise price of $0.60 per share. As of December 31, 2025, there were options outstanding from the 2013 Plan to acquire an aggregate of 1,965,000 shares of Solitario common stock, with exercise prices between $0.60 and $0.69 per share. As of both June 30, 2026 and December 31, 2025 there were options outstanding under the 2023 Plan to acquire 3,600,000 shares of Solitario common stock with exercise prices between $0.51 per share and $0.85 per share. We did not grant any options during the three and six months ended June 30, 2026 or 2025. During the three and six months ended June 30, 2026, options for 90,000 shares of Solitario common stock were exercised under the 2013 Plan with exercise prices between $0.69 and $0.67 per share for proceeds of $61,000. During the three and six months ended June 30, 2025, options for 250,000 and 1,028,500 shares, respectively, of Solitario common stock were exercised under the 2013 Plan with an exercise price of $0.20 per share for proceeds of $50,000 and $206,000, respectively. We do not anticipate the exercise of options to be a significant source of capital during the remainder of 2026.

(d) Cash Flows

Net cash used in operations during the six months ended June 30, 2026 increased to $1,848,000 compared to $1,401,000 of net cash used in operations for the six months ended June 30, 2025 primarily as a result of (i) an increase in exploration expenses to $1,690,000 during the six months ended June 30, 2026 compared to exploration expenses of $910,000 during the six months ended June 30, 2025. Partially offsetting this increase in the use of cash were (i) a decrease in general and administrative expense during the six months ended June 30, 2026 to $827,000 compared to $878,000 during the six months ended June 30, 2025; (ii) an increase in interest and dividend income to $142,000 during the six months ended June 30, 2026 compared to interest income of $98,000 during the six months ended June 30, 2025; (iii) a reduction in the use of cash for prepaid expenses and other current assets to $82,000 for the six months ended June 30, 2026 compared to the use of cash of $163,000 for prepaid expenses and other current assets during the six months ended June 30, 2025. and (iv) a provision of cash from an increase in accounts payable and other current liabilities during the six months ended June 30, 2026 of $435,000 compared to a provision of cash for an increase in accounts payable and other current liabilities of $181,000 during the six months ended June 30, 2025. Based upon projected expenditures in our 2026 budget, we anticipate continued use of funds from operations through the remainder of 2026, primarily for exploration related to our Golden Crest and Cat Creek project as well as our Bright Angel and Lik projects and reconnaissance exploration. See “Results of Operations” above for further explanation of some of these variances.

During the six months ended June 30, 2026, we used $927,000 for net purchases of short-term investments, compared to the use of cash of $4,300,000 for net purchases of short-term investments during the six months ended June 30, 2025. The increase during 2025 in our short-term investments was as a result of the funds received from (i) the sales of marketable equity securities discussed above; (ii) stock option exercises; and (iii) cash received through stock sales, discussed below.

We will continue to liquidate a portion of our short-term investments as needed to fund our operations and any potential mineral property acquisitions during the remainder of 2026, although we are not currently planning any potential mineral property acquisition or strategic corporate investment during the remainder of 2026. However, any such activity could involve a significant change in our cash provided or used for investing activities, depending on the structure of any potential transaction.

During the six months ended June 30, 2026, we received $2,647,000 in net proceeds from the issuance of common stock under the ATM Program, and we received $228,000 from a private placement by Newmont. We also received $61,000 from the exercise of stock options during the six months ended June 30, 2026. During the six months ended June 30, 2025, we received $94,000 in net proceeds from the issuance of common stock under the ATM Program, and we received $4,411,000 from the issuance of common stock from private placements. We also received $206,000 from the exercise of stock options during the six months ended June 30, 2025. See Note 11, Shareholders’ Equity, above.

(e) Mineral Resources

CAUTIONARY NOTE REGARDING DISCLOSURE OF MINERAL PROPERTIES

Mineral Reserves and Resources

We are subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the “1934 Act”), and applicable Canadian securities laws, and as a result we are subject to reporting our mineral resources according to two different standards. U.S. reporting requirements, are governed by Item 1300 of Regulation S-K (“S-K 1300”) issued by the SEC. Canadian reporting requirements for disclosure of mineral properties are governed by National Instrument 43-101 Standards of Disclosure for Mineral Projects adopted from the definitions provided by the Canadian Institute of Mining, Metallurgy and Petroleum. Both sets of reporting standards have similar goals in terms of conveying an appropriate level of confidence in the disclosures being reported, but the standards generally embody slightly different approaches and definitions.

In our public filings in the U.S. and Canada and in certain other announcements not filed with the SEC, we disclose measured, indicated and inferred resources, each as defined in S-K 1300. The estimation of measured resources and indicated resources involve greater uncertainty as to their existence and economic feasibility than the estimation of proven and probable reserves, and therefore investors are cautioned not to assume that all or any part of measured or indicated resources will ever be converted into S-K 1300-compliant reserves. The estimation of inferred resources involves far greater uncertainty as to their existence and economic viability than the estimation of other categories of resources, and therefore it cannot be assumed that all or any part of inferred resources will ever be upgraded to a higher category. Therefore, investors are cautioned not to assume that all or any part of inferred resources exist, or that they can be mined legally or economically.

(f) Off-balance sheet arrangements

As of June 30, 2026 and December 31, 2025, we had no off-balance sheet obligations.

(g) Development Activities, Exploration Activities, Environmental Compliance and Contractual Obligations

We are not involved in any development activities, nor do we have any contractual obligations related to any potential development activities as of June 30, 2026. As of June 30, 2026, there have been no material changes to our contractual obligations for exploration activities, environmental compliance or other obligations from those disclosed in our Management’s Discussion and Analysis included in our 2025 Annual Report.

(h) Discontinued Projects

We did not record any mineral property write-downs during the three and six months ended June 30, 2026 and 2025.

(i) Significant Accounting Policies and Critical Accounting Estimates

See Note 1 to the consolidated Financial Statements included in our 2025 Annual Report for a discussion of our significant accounting policies.

Solitario’s valuation of mineral properties is a critical accounting estimate. We review and evaluate our mineral properties for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Significant negative industry or economic trends, adverse social or political developments, geologic results, geo-technical difficulties, or other disruptions to our business are a few examples of events that we monitor, as they could indicate that the carrying value of the mineral properties may not be recoverable. In such cases, a recoverability test may be necessary to determine if an impairment charge is required. There has been no change to our assumptions, estimates or calculations during the three and six months ended June 30, 2026.

(j) Related Party Transactions

As of June 30, 2026, and for the three and six months ended June 30, 2026, we have no related party transactions or balances.

(k) Recent Accounting Pronouncements

There have been no new proposed or adopted accounting pronouncements applicable to Solitario since those described in the Company’s 2025 Annual Report.

(l) Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements, within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the 1934 Act , with respect to our financial condition, results of operations, business prospects, plans, objectives, goals, strategies, budgets, future events, capital expenditures, and exploration and development efforts. Words such as “anticipates,” “expects,” “intends,” “forecasts,” “plans,” “believes,” “seeks,” “estimates,” “may,” “will,” and similar expressions identify forward-looking statements. These forward-looking statements are based on our current expectations and assumptions about future events and are based on currently available information as to the outcome and timing of future events. When considering forward-looking statements, you should keep in mind the risk factors and other cautionary statements described herein and the risk factors included under the heading "Risk Factors" in Part I, Item 1A of our 2025 Annual Report to which there have been no material changes. These forward-looking statements appear in a number of places in this report and include statements with respect to, among other things:

Although we have attempted to identify important factors that could cause actual results to differ materially from those described in forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that these statements will prove to be accurate as actual results and future events could differ materially from those anticipated in the statements. Except as required by law, we assume no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

Smaller Reporting Companies are not required to provide the information required by this item.

Item 4. Controls and Procedures

Disclosure Controls and Procedures

As required by Rule 13a-15 under the 1934 Act, as of June 30, 2026, we carried out an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures. This evaluation was carried out under the supervision and with the participation of our Chief Executive Officer (our principal executive officer) and our Chief Financial Officer (our principal financial officer). Based upon and as of the date of that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of June 30, 2026.

Disclosure controls and procedures are controls and other procedures that are designed to ensure that information required to be disclosed in our reports filed or submitted under the 1934 Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed in our reports filed under the 1934 Act is accumulated and communicated to our management, including our principal executive officer and our principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) promulgated under the 1934 Act) during the quarter ended June 30, 2026 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II - OTHER INFORMATION

Item 1. Legal Proceedings

None.

Item 1A. Risk Factors

As of June 30, 2026, there were no material changes to the Risk Factors associated with our business disclosed in Part I, Item 1A of our 2025 Annual Report.

Item 2. Unregistered Sales of Equity Securities, Use of Proceeds and Issuer Purchases of Equity Securities

Recent Sales of Unregistered Securities

On May 13, 2026, Solitario closed on a private placement of 305,195 shares of Solitario common stock (the “Newmont Shares”), pursuant to a Stock Purchase Agreement (the “SPA”) with Newmont Overseas Exploration Ltd. (“Newmont”), for a price of $0.77 per share for net proceeds of $228,000 after certain legal and regulatory expenses of $7,000. The Company relied on the exemptions from registration set forth in Section 4(a)(2) under the Securities Act of 1933, as amended, and Rule 506(b) promulgated thereunder for the offer and sale of the shares. In connection with such offers and sales the Company: (i) did not engage in any public advertising or general solicitation in connection with the offering; (ii) reasonably believed that Newmont was sophisticated and an “accredited investor” and understood the risks of acquiring shares of Company common stock; and (iii) believed that Newmont acquired the shares for investment purposes.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

None.

Item 5. Other Information

During the quarter ended June 30, 2026, none of the Company’s directors or officers adopted, modified, or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as those terms are defined in Item 408 of Regulation S-K.

Item 6. Exhibits

The Exhibits to this report are listed in the Exhibit Index.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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