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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

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☒ | Quarterly Report Pursuant to Section 13 Or 15(d) Of The Securities Exchange Act of 1934

​

For the quarterly period ended September 30, 2025

​ | ​
☐ | Transition Report Under Section 13 Or 15(d) Of The Securities Exchange Act of 1934

​

For the transition period ________ to ________

COMMISSION FILE NUMBER 001-08675

​

​
UNITED STATES ANTIMONY CORPORATION
(Exact name of registrant as specified in its charter)

​

​ | ​ | ​
Texas |  | 81-0305822
(State or other jurisdiction of incorporation or | ​ | (IRS Employer Identification No.)
organization) | ​ | ​
​ | ​ | ​
4438 W. Lovers Lane, Unit 100, Dallas, TX |  | 75209
(Address of principal executive office) | ​ | (Postal Code)

​

(406) 606-4117

(Registrant’s telephone number)

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

​

​ | ​ | ​ | ​ | ​
Title of Each Class |  | Trading Symbol |  | Name of Each Exchange on Which Registered
Common Stock, $0.01 par value | ​ | UAMY | ​ | NYSE American
Common Stock, $0.01 par value | ​ | UAMY | ​ | NYSE Texas

​

Indicate by check mark 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 checkmark whether the registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post filed). Yes ☒ No ☐

Indicate by checkmark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “Accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act (Check one):

​ | ​ | ​ | ​
Large Accelerated Filer | ☐ | Accelerated Filer | ☐
Non-accelerated Filer | ☒ | Smaller Reporting Company | ☒
Emerging Growth Company | ☐ | ​ | ​

​

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 ☒

As of November 10, 2025, there were 140,035,604 shares outstanding of the registrant’s $0.01 par value common stock.

​

​

​

Table of Contents

Table of Contents

​ | ​ | ​
PART I - FINANCIAL INFORMATION | ​
​ | ​ | ​
ITEM 1. | FINANCIAL STATEMENTS | 3
​ | ​ | ​
ITEM 2. | MANAGEMENT’S DISCUSSION AND ANALYSIS AND PLAN OF OPERATION. | 24
​ | ​ | ​
ITEM 3. | QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK | 31
​ | ​ | ​
ITEM 4. | CONTROLS AND PROCEDURES | 32
​ | ​ | ​
PART II - OTHER INFORMATION | 32
​ | ​ | ​
ITEM 1. | LEGAL PROCEEDINGS. | 32
​ | ​ | ​
ITEM 1A. | RISK FACTORS. | 32
​ | ​ | ​
ITEM 2. | UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS. | 33
​ | ​ | ​
ITEM 3. | DEFAULTS UPON SENIOR SECURITIES. | 33
​ | ​ | ​
ITEM 4. | MINE SAFETY DISCLOSURES. | 33
​ | ​ | ​
ITEM 5. | OTHER INFORMATION. | 33
​ | ​ | ​
ITEM 6. | EXHIBITS. | 34

​

​

​

​

2

Table of Contents

PART I - FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

UNITED STATES ANTIMONY CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, |  | December 31,
​ | ​ | 2025 | ​ | 2024
ASSETS |  | ​ |  |  | ​ |
CURRENT ASSETS |  | ​ |  |  | ​ |
Cash and cash equivalents | ​ | $ | 18,338,679 | ​ | $ | 18,172,120
Investment securities held to maturity | ​ |  | 1,270,666 | ​ |  | —
Accounts receivable, net | ​ |  | 1,898,184 | ​ |  | 1,099,771
Inventories | ​ |  | 8,413,161 | ​ |  | 1,245,724
Prepaid expenses and other current assets | ​ |  | 1,877,249 | ​ |  | 160,954
Total current assets | ​ |  | 31,797,939 | ​ |  | 20,678,569
Property, plant and equipment, net | ​ |  | 28,121,338 | ​ |  | 12,891,447
Operating lease right-of-use assets | ​ |  | 36,288 | ​ |  | 565,289
Investment securities held to maturity - noncurrent | ​ |  | 18,886,727 | ​ |  | —
Restricted cash for reclamation bonds | ​ |  | 131,402 | ​ |  | 98,778
IVA receivable and other assets, net | ​ |  | 908,647 | ​ |  | 408,519
Total assets | ​ | $ | 79,882,341 | ​ | $ | 34,642,602
LIABILITIES AND STOCKHOLDERS' EQUITY | ​ |  |  | ​ |  |
CURRENT LIABILITIES | ​ |  |  | ​ |  |
Accounts payable | ​ | $ | 4,218,043 | ​ | $ | 1,545,708
Accrued liabilities | ​ |  | 1,581,627 | ​ |  | 1,427,146
Accrued liabilities - directors | ​ |  | 89,530 | ​ |  | 141,287
Royalties payable | ​ |  | 207,445 | ​ |  | 133,434
Current portion of operating lease liabilities | ​ |  | 28,990 | ​ |  | 626,562
Current portion of long-term debt | ​ |  | 135,754 | ​ |  | 132,252
Total current liabilities | ​ |  | 6,261,389 | ​ |  | 4,006,389
Operating lease liabilities, net of current portion | ​ |  | 7,298 | ​ |  | 129,007
Long-term debt, net of current portion | ​ |  | 93,167 | ​ |  | 195,425
Asset retirement obligations | ​ |  | 1,769,557 | ​ |  | 1,711,108
Total liabilities | ​ |  | 8,131,411 | ​ |  | 6,041,929
COMMITMENTS AND CONTINGENCIES (Note 12) | ​ |  |  | ​ |  |
STOCKHOLDERS' EQUITY | ​ |  |  | ​ |  |
Preferred stock $0.01 par value, 50,000,000 shares authorized: | ​ |  |  | ​ |  |
Series A - no shares issued and outstanding | ​ |  | — | ​ |  | —
Series B - 750,000 shares issued and outstanding (liquidation preference $980,625 and $975,000, respectively) | ​ |  | 7,500 | ​ |  | 7,500
Series C - 177,904 shares issued and outstanding (liquidation preference $97,847 both periods) | ​ |  | 1,779 | ​ |  | 1,779
Series D - no shares issued and outstanding | ​ |  | — | ​ |  | —
Common stock, $0.01 par value, 250,000,000 shares authorized; 130,338,196 and 112,951,317 shares issued and outstanding, respectively | ​ |  | 1,303,382 | ​ |  | 1,129,512
Treasury stock (140,860 and no shares of common stock at cost, respectively) | ​ |  | (510,675) | ​ |  | —
Additional paid-in capital | ​ |  | 116,150,588 | ​ |  | 68,610,905
Accumulated deficit | ​ |  | (45,201,644) | ​ |  | (41,149,023)
Total stockholders' equity | ​ |  | 71,750,930 | ​ |  | 28,600,673
Total liabilities and stockholders' equity | ​ | $ | 79,882,341 | ​ | $ | 34,642,602

​

The accompanying notes are an integral part of these condensed consolidated unaudited financial statements.

​

3

Table of Contents

UNITED STATES ANTIMONY CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | Nine months ended September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Revenues | ​ | $ | 8,701,951 | ​ | $ | 2,572,178 | ​ | $ | 26,227,079 | ​ | $ | 9,307,222
Cost of revenues | ​ |  | 6,688,509 | ​ |  | 2,148,349 | ​ |  | 19,004,362 | ​ |  | 7,043,685
Gross profit | ​ |  | 2,013,442 | ​ |  | 423,829 | ​ |  | 7,222,717 | ​ |  | 2,263,537
Operating expenses: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
General and administrative | ​ |  | 882,909 | ​ |  | 610,888 | ​ |  | 2,276,455 | ​ |  | 1,614,048
Salaries and benefits | ​ |  | 4,940,319 | ​ |  | 429,438 | ​ |  | 7,305,380 | ​ |  | 956,402
Professional fees | ​ |  | 522,531 | ​ |  | 184,402 | ​ |  | 1,441,436 | ​ |  | 637,418
(Gain) loss on sale or disposal of property, plant and equipment | ​ |  | (8,216) | ​ |  | (16,252) | ​ |  | (8,716) | ​ |  | 1,242
Gain on lease termination | ​ |  | (469,822) | ​ |  | — | ​ |  | (469,822) | ​ |  | —
Other operating expenses | ​ |  | 1,062,903 | ​ |  | 106,374 | ​ |  | 1,217,167 | ​ |  | 359,894
Total operating expenses | ​ |  | 6,930,624 | ​ |  | 1,314,850 | ​ |  | 11,761,900 | ​ |  | 3,569,004
Loss from operations | ​ |  | (4,917,182) | ​ |  | (891,021) | ​ |  | (4,539,183) | ​ |  | (1,305,467)
Other income (expense), net: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Interest and investment income | ​ |  | 150,563 | ​ |  | 157,757 | ​ |  | 472,719 | ​ |  | 460,529
Trademark and licensing income | ​ |  | 7,867 | ​ |  | 6,553 | ​ |  | 25,337 | ​ |  | 21,281
Other miscellaneous expense | ​ |  | (21,948) | ​ |  | (798) | ​ |  | (11,494) | ​ |  | (23,828)
Total other income, net | ​ |  | 136,482 | ​ |  | 163,512 | ​ |  | 486,562 | ​ |  | 457,982
Loss before income taxes | ​ |  | (4,780,700) | ​ |  | (727,509) | ​ |  | (4,052,621) | ​ |  | (847,485)
Income tax expense | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Net loss | ​ |  | (4,780,700) | ​ |  | (727,509) | ​ |  | (4,052,621) | ​ |  | (847,485)
Preferred dividends | ​ |  | (1,875) | ​ |  | (1,875) | ​ |  | (5,625) | ​ |  | (5,625)
Net loss available to common shareholders | ​ | $ | (4,782,575) | ​ | $ | (729,384) | ​ | $ | (4,058,246) | ​ | $ | (853,110)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net loss per share: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | (0.04) | ​ | $ | (0.01) | ​ | $ | (0.03) | ​ | $ | (0.01)
Diluted | ​ | $ | (0.04) | ​ | $ | (0.01) | ​ | $ | (0.03) | ​ | $ | (0.01)
Weighted average shares outstanding: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ |  | 123,412,910 | ​ |  | 108,438,984 | ​ |  | 118,494,796 | ​ |  | 108,262,091
Diluted | ​ |  | 123,412,910 | ​ |  | 108,438,984 | ​ |  | 118,494,796 | ​ |  | 108,262,091

​

The accompanying notes are an integral part of these condensed consolidated unaudited financial statements.

​

4

Table of Contents

UNITED STATES ANTIMONY CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (UNAUDITED)

For the three and nine months ended September 30, 2025 and 2024

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Preferred Stock | ​ | Common stock | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Additional | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Total
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Paid-In | ​ | Accumulated | ​ | Treasury | ​ | Stockholders'
​ |  | Shares |  | Par Value |  | Shares |  | Par Value |  | Capital |  | Deficit |  | Stock |  | Equity
Balance - December 31, 2024 | ​ | 927,904 | ​ | $ | 9,279 | ​ | 112,951,317 | ​ | $ | 1,129,512 | ​ | $ | 68,610,905 | ​ | $ | (41,149,023) | ​ | $ | — | ​ | $ | 28,600,673
Net income | ​ | — | ​ | ​ | — | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 546,524 | ​ | ​ | — | ​ | ​ | 546,524
Share-based compensation |  | — |  | ​ | — |  | — |  | ​ | — |  | ​ | 245,384 |  | ​ | — |  | ​ | — |  | ​ | 245,384
Issuance of common stock under equity incentive plan |  | — |  | ​ | — |  | 1,101,231 |  | ​ | 11,013 |  | ​ | (11,013) |  | ​ | — |  | ​ | — |  | ​ | —
Issuance of common stock for cash, net of issuance costs |  | — |  | ​ | — |  | 1,107,923 |  | ​ | 11,079 |  | ​ | 2,381,238 |  | ​ | — |  | ​ | — |  | ​ | 2,392,317
Issuance of common stock upon exercise of warrants |  | — |  | ​ | — |  | 948,750 |  | ​ | 9,488 |  | ​ | 796,950 |  | ​ | — |  | ​ | — |  | ​ | 806,438
Balance - March 31, 2025 |  | 927,904 |  | ​ | 9,279 |  | 116,109,221 |  | ​ | 1,161,092 |  | ​ | 72,023,464 |  | ​ | (40,602,499) |  | ​ | — |  | ​ | 32,591,336
Net income |  | — |  | ​ | — |  | — |  | ​ | — |  | ​ | — |  | ​ | 181,555 |  | ​ | — |  | ​ | 181,555
Share-based compensation |  | — |  | ​ | — |  | — |  | ​ | — |  | ​ | 586,913 |  | ​ | — |  | ​ | — |  | ​ | 586,913
Issuance of common stock under equity incentive plan |  | — |  | ​ | — |  | 370,866 |  | ​ | 3,709 |  | ​ | 51,291 |  | ​ | — |  | ​ | — |  | ​ | 55,000
Issuance of common stock for cash, net of issuance costs |  | — |  | ​ | — |  | 750,000 |  | ​ | 7,500 |  | ​ | 2,664,666 |  | ​ | — |  | ​ | — |  | ​ | 2,672,166
Issuance of common stock upon exercise of warrants |  | — |  | ​ | — |  | 1,970,893 |  | ​ | 19,709 |  | ​ | 1,399,264 |  | ​ | — |  | ​ | — |  | ​ | 1,418,973
Balance - June 30, 2025 |  | 927,904 |  | ​ | 9,279 |  | 119,200,980 |  | ​ | 1,192,010 |  | ​ | 76,725,598 |  | ​ | (40,420,944) |  | ​ | — |  | ​ | 37,505,943
Net loss |  | — |  | ​ | — |  | — |  | ​ | — |  | ​ | — |  | ​ | (4,780,700) |  | ​ | — |  | ​ | (4,780,700)
Share-based compensation |  | — |  | ​ | — |  | — |  | ​ | — |  | ​ | 3,856,475 |  | ​ | — |  | ​ | — |  | ​ | 3,856,475
Issuance of common stock under equity incentive plan |  | — |  | ​ | — |  | 628,602 |  | ​ | 6,286 |  | ​ | 95,143 |  | ​ | — |  | ​ | (510,675) |  | ​ | (409,246)
Issuance of common stock for cash, net of issuance costs |  | — |  | ​ | — |  | 7,655,435 |  | ​ | 76,555 |  | ​ | 33,299,558 |  | ​ | — |  | ​ | — |  | ​ | 33,376,113
Issuance of common stock upon exercise of warrants |  | — |  | ​ | — |  | 2,853,179 |  | ​ | 28,531 |  | ​ | 2,173,814 |  | ​ | — |  | ​ | — |  | ​ | 2,202,345
Balance - September 30, 2025 |  | 927,904 | ​ | $ | 9,279 |  | 130,338,196 | ​ | $ | 1,303,382 | ​ | $ | 116,150,588 | ​ | $ | (45,201,644) | ​ | $ | (510,675) | ​ | $ | 71,750,930

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Preferred Stock | ​ | Common stock | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
| ​ | ​ | ​ | ​ |  | ​ |  | ​ | ​ |  | ​ | Additional | ​ | ​ |  | ​ | Total
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Paid-In | ​ | Accumulated | ​ | Stockholders'
​ |  | Shares |  | Par Value |  | Shares |  | Par Value |  | Capital |  | Deficit |  | Equity
Balance - December 31, 2023 |  | 927,904 | ​ | $ | 9,279 |  | 107,647,317 | ​ | $ | 1,076,472 | ​ | $ | 63,853,836 | ​ | $ | (39,418,619) | ​ | $ | 25,520,968
Net loss |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | — | ​ |  | (322,768) | ​ |  | (322,768)
Share-based compensation |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | 205,925 | ​ |  | — | ​ |  | 205,925
Issuance of common stock under equity incentive plan |  | — | ​ |  | — |  | 791,667 | ​ |  | 7,917 | ​ |  | (7,917) | ​ |  | — | ​ |  | —
Balance - March 31, 2024 |  | 927,904 | ​ |  | 9,279 |  | 108,438,984 | ​ |  | 1,084,389 | ​ |  | 64,051,844 | ​ |  | (39,741,387) | ​ |  | 25,404,125
Net income |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | — | ​ |  | 202,792 | ​ |  | 202,792
Share-based compensation |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | 94,922 | ​ |  | — | ​ |  | 94,922
Balance - June 30, 2024 |  | 927,904 | ​ |  | 9,279 |  | 108,438,984 | ​ |  | 1,084,389 | ​ |  | 64,146,766 | ​ |  | (39,538,595) | ​ |  | 25,701,839
Net loss |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | — | ​ |  | (727,509) | ​ |  | (727,509)
Share-based compensation |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | 152,719 | ​ |  | — | ​ |  | 152,719
Balance - September 30, 2024 |  | 927,904 | ​ | $ | 9,279 |  | 108,438,984 | ​ | $ | 1,084,389 | ​ | $ | 64,299,485 | ​ | $ | (40,266,104) | ​ | $ | 25,127,049

​

The accompanying notes are an integral part of these condensed consolidated unaudited financial statements.

​

5

Table of Contents

UNITED STATES ANTIMONY CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended September 30,
​ |  | 2025 |  | 2024
CASH FLOWS FROM OPERATING ACTIVITIES: |  | ​ |  |  | ​ |
Net loss | ​ | $ | (4,052,621) | ​ | $ | (847,485)
Adjustments to reconcile loss to net cash (used in) provided by operating activities: | ​ |  |  | ​ |  |
Depreciation and amortization | ​ |  | 839,353 | ​ |  | 340,217
Accretion of asset retirement obligation | ​ |  | 58,449 | ​ |  | 54,813
Noncash operating lease expense | ​ |  | 289,542 | ​ |  | 18,611
Share-based compensation | ​ |  | 4,688,772 | ​ |  | 453,566
Accretion income from investment securities held to maturity | ​ |  | (222,440) | ​ |  | —
(Gain) loss on sale or disposal of property, plant and equipment, net | ​ |  | (8,716) | ​ |  | 1,242
Gain on lease termination | ​ |  | (469,822) | ​ |  | —
Write-down of inventory to net realizable value | ​ |  | — | ​ |  | 63,574
Change in allowance for credit losses | ​ |  | 5,798 | ​ |  | (30,746)
Other noncash items | ​ |  | — | ​ |  | (16,107)
Changes in operating assets and liabilities: | ​ |  |  | ​ |  |
Accounts receivable | ​ |  | (804,211) | ​ |  | (175,748)
Inventories | ​ |  | (7,167,437) | ​ |  | 324,264
Prepaid expenses and other current assets | ​ |  | (1,726,295) | ​ |  | (87,824)
IVA receivable and other assets, net | ​ |  | (500,128) | ​ |  | 60,856
Accounts payable | ​ |  | 2,672,335 | ​ |  | 889,242
Accrued liabilities | ​ |  | 154,481 | ​ |  | 46,129
Accrued liabilities – directors | ​ |  | (51,757) | ​ |  | 34,355
Royalties payable | ​ |  | 74,011 | ​ |  | (48,255)
Stock payable to directors | ​ |  | — | ​ |  | (38,542)
Net cash (used in) provided by operating activities | ​ |  | (6,220,686) | ​ |  | 1,042,162
CASH FLOWS FROM INVESTING ACTIVITIES: | ​ |  |  | ​ |  |
Proceeds from redemption of certificates of deposit | ​ |  | — | ​ |  | 50,641
Purchases of investment securities held to maturity | ​ |  | (19,934,953) | ​ |  | —
Proceeds from sales of property, plant and equipment | ​ |  | 8,716 | ​ |  | 314,125
Purchases of property, plant and equipment | ​ |  | (16,069,244) | ​ |  | (223,058)
Net cash (used in) provided by investing activities | ​ |  | (35,995,481) | ​ |  | 141,708
CASH FLOWS FROM FINANCING ACTIVITIES: | ​ |  |  | ​ |  |
Principal payments on long-term debt | ​ |  | (98,756) | ​ |  | (71,139)
Proceeds from exercises of stock options | ​ |  | 55,000 | ​ |  | —
Treasury stock acquired | ​ |  | (409,246) | ​ |  | —
Proceeds from issuance of common stock, net of issuance costs | ​ |  | 38,440,596 | ​ |  | —
Proceeds from exercise of warrants | ​ |  | 4,427,756 | ​ |  | —
Net cash provided by (used in) financing activities | ​ |  | 42,415,350 | ​ |  | (71,139)
NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH | ​ |  | 199,183 | ​ |  | 1,112,731
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD | ​ |  | 18,270,898 | ​ |  | 11,954,635
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD | ​ | $ | 18,470,081 | ​ | $ | 13,067,366
​ | ​ | ​ | ​ | ​ | ​ | ​
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: | ​ |  |  | ​ |  |
Interest paid in cash | ​ | $ | 14,642 | ​ | $ | 5,630
NON-CASH FINANCING AND INVESTING ACTIVITIES: | ​ |  |  | ​ |  |
Recognition of operating lease liability and right-of-use asset | ​ | $ | 63,416 | ​ | $ | 787,477
Equipment purchased with note payable | ​ | $ | — | ​ | $ | 402,722

​

The accompanying notes are an integral part of these condensed consolidated unaudited financial statements.

​

​

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Table of Contents

UNITED STATES ANTIMONY CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

NOTE 1 - NATURE OF OPERATIONS

United States Antimony Corporation and its subsidiaries in the U.S., Mexico, and Canada (“USAC,” the “Company,” “Our,” “Us,” or “We”) sell antimony, zeolite, and precious metals primarily in the U.S., Mexico, and Canada. The Company mines, purchases and processes third party ore primarily into antimony oxide, antimony metal ingots, antimony trisulfide, and precious metals, primarily gold and silver, at its facilities located in Montana and Mexico. Antimony oxide is used to form a flame-retardant system for plastics, rubber, fiberglass, textile goods, paints, coatings, and paper, as a color fastener in paint, and as a phosphorescent agent in fluorescent light bulbs. Antimony metal ingots are used in bearings, storage batteries, and ordnance. Antimony trisulfide is used as a primer in ammunition. At its Bear River Zeolite (“BRZ”) facility located in Idaho, the Company mines and processes zeolite, a group of industrial minerals used in water filtration, sewage treatment, nuclear waste and other environmental cleanup, odor control, gas separation, animal nutrition, soil amendment and fertilizer, and other miscellaneous applications. Beginning in 2024, the Company began acquiring mining claims, real properties (patented claims) and leases located in Alaska, Montana and Ontario, Canada, in an effort to reduce the cost of third party antimony ore purchases.

​

NOTE 2 - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of its financial position as of September 30, 2025, and its results of operations and cash flows for the three and nine months ended September 30, 2025 and 2024. The Condensed Consolidated Balance Sheet as of December 31, 2024, was derived from audited annual financial statements but does not contain all of the footnote disclosures from the annual financial statements.

These unaudited interim financial statements have been prepared by management in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). These unaudited interim financial statements should be read in conjunction with the annual audited financial statements included in the Company’s Annual Report on Form 10-K/A for the year ended December 31, 2024, filed with the Securities and Exchange Commission on April 18, 2025.

This summary of significant accounting policies of the Company is presented to assist in understanding the Company’s financial statements. These accounting policies conform to U.S. GAAP and have been consistently applied in the preparation of the financial statements.

Use of Estimates

The preparation of financial statements in accordance with U.S. GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities known to exist as of the date the financial statements are published, and the reported amounts of revenues and expenses during the reporting period. Uncertainties with respect to such estimates and assumptions are inherent in the preparation of the Company’s consolidated financial statements; accordingly, it is possible that the actual results could differ from these estimates and assumptions, which could have a material effect on the reported amounts of the Company’s consolidated financial position and results of operations. Operating results for the three and nine months ended September 30, 2025, are not necessarily indicative of the results that may be expected for the full year ending December 31, 2025.

Reclassifications

Certain reclassifications have been made to conform prior period amounts to the current period’s presentation. These reclassifications have no effect on the results of operations, stockholders’ equity or cash flows as previously reported.

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UNITED STATES ANTIMONY CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

Investment Securities Held to Maturity

During 2025, the Company purchased short and long-term investment grade U.S. Treasury Strips in an effort to protect itself from anticipated interest rate drops. These securities are classified as held-to-maturity and carried at amortized cost because the Company has both the intent and ability to hold them until their contractual maturity date. Since these U.S. Treasury Strips are zero-coupon instruments that do not pay periodic interest, the original investment amount is adjusted for the accretion of discounts using the effective interest method over the period from acquisition to maturity. Discount accretion is recognized as “Interest and investment income” in the Condensed Consolidated Statements of Operations.

Consistent with the Company’s classification of its U.S. Treasury Strips as held to maturity, those securities scheduled to mature in the next twelve months after the reporting date are considered current assets and those having maturity dates more than twelve months after the applicable reporting date are considered non-current assets. Unrealized gains and losses on held-to-maturity securities are not recognized in the Company’s condensed consolidated financial statements. Instead, these amounts are closely monitored and disclosed in the footnotes to the condensed consolidated financial statements.

The Company accounts for credit losses on its held-to-maturity securities in accordance with the expected credit loss model, as prescribed by U.S. GAAP. An allowance for credit losses is recognized to reflect the Company’s estimate of expected credit losses over the contractual life of its held-to-maturity securities. In accordance with the accounting guidance prescribed for credit losses on held-to-maturity debt securities, the Company has presumed the expected credit losses on its U.S. Treasury Strips are negligible since they are explicitly guaranteed by the U.S. government.

Recent Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvement to Income Tax Disclosures, amending income tax disclosure requirements for the effective tax rate reconciliation and income taxes paid. The amendments in this ASU are effective for fiscal years beginning after December 15, 2024 and are applied prospectively. Early adoption and retrospective application of the amendments are permitted. These new disclosure requirements will be effective in the Company’s Annual Report on Form 10-K for the fiscal year ending December 31, 2025. Other than the new disclosure requirements, this guidance is not expected to have an impact on the Company’s consolidated financial statements.

In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disclosure about the types of costs and expenses included in certain expense captions presented on the income statement. These new disclosure requirements are effective for the Company’s annual periods beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted, and may be applied either prospectively or retrospectively. The Company is currently evaluating the potential impact this update will have on its consolidated financial statements and expense disclosures in the notes to the consolidated financial statements.

In September 2025, the FASB issued ASU No. 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments in this ASU clarify and refine the criteria for capitalizing costs related to internal-use software. Under the new guidance, capitalization is permitted when both of the following conditions are met: (i) management has authorized and committed to funding the software project, and (ii) it is probable that the project will be completed, and the software will be used to perform the function intended. This ASU will be effective for annual periods beginning after December 15, 2027, for interim reporting periods beginning within those annual periods, and early adoption is permitted. Management is currently evaluating this update to determine its impact on the Company’s consolidated financial statements.

The Company does not believe that issued, but not yet effective, accounting pronouncements, if currently adopted, would have a material effect on the Company’s financial statements.

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UNITED STATES ANTIMONY CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

​

NOTE 3 – EARNINGS PER SHARE

Basic earnings per share (“EPS”) is computed as net income (loss) available to common stockholders divided by the weighted average number of common shares outstanding for the period. Diluted EPS is calculated the same as Basic EPS but reflects the potential dilution that could occur from common shares issuable through stock options, restricted stock units (“RSUs”), and warrants in the weighted average number of common shares outstanding. Each stock option, RSU, and warrant represents the right to receive one share of the Company’s common stock.

The potentially dilutive common stock equivalents not included in the calculation of diluted earnings per share as their effect would have been anti-dilutive were as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | Nine months ended September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
Warrants |  | 4,369,393 |  | 12,346,215 |  | 4,369,393 |  | 12,346,215
Stock options and RSU awards |  | 8,726,834 |  | 6,408,333 |  | 8,726,834 |  | 6,408,333
Total possible share dilution |  | 13,096,227 |  | 18,754,548 |  | 13,096,227 |  | 18,754,548

​

​

​

NOTE 4 – FAIR VALUE MEASUREMENTS

The Company uses the fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, essentially an exit price, based on the highest and best use of the asset or liability. The levels of the fair value hierarchy are:

Level 1—Quoted market prices in active markets for identical assets or liabilities;

Level 2—Significant other observable inputs (i.e., quoted prices for similar items in active markets, quoted prices for identical or similar items in markets that are not active, inputs other than quoted prices that are observable, such as interest rate and yield curves, and market-corroborated inputs); and

Level 3—Unobservable inputs in which there is little or no market data, which require the reporting unit to develop its own assumptions.

The classification of fair value measurements within the established three-level hierarchy is based upon the lowest level of input that is significant to the measurements. Financial instruments, although not recorded at fair value on a recurring basis, include cash and cash equivalents, held-to-maturity securities, and debt obligations.

The carrying amounts of cash and cash equivalents approximate fair value because of its short-term nature. The estimated fair values of investment securities held to maturity were based on Level 2 inputs. The fair value of the Company’s debt is estimated to be face value based on the contractual terms of the underlying debt arrangements and market-based expectations.

​

NOTE 5 – REVENUE RECOGNITION

The Company’s products consist of the following:

| · | Antimony: primarily includes antimony oxide, antimony metal ingots, and antimony trisulfide.

| · | Zeolite: includes coarse and fine zeolite crushed in various product sizes.

| · | Precious metals: includes unrefined and refined gold and silver.

​

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

Sales by product type for the three and nine months ended September 30, 2025 and 2024 were as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | Nine months ended September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
Antimony | ​ | $ | 8,030,005 | ​ | $ | 1,489,798 | ​ | $ | 23,592,695 | ​ | $ | 6,622,835
Zeolite | ​ |  | 671,946 | ​ |  | 682,947 | ​ |  | 2,654,923 | ​ |  | 2,280,338
Precious metals | ​ |  | — | ​ |  | 399,433 | ​ |  | (20,539) | ​ |  | 404,049
Total revenues | ​ | $ | 8,701,951 | ​ | $ | 2,572,178 | ​ | $ | 26,227,079 | ​ | $ | 9,307,222

​

Domestic and foreign revenues for the three and nine months ended September 30, 2025 and 2024 were as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | Nine months ended September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
Domestic | ​ | $ | 8,542,248 | ​ | $ | 1,897,121 | ​ | $ | 25,788,506 | ​ | $ | 7,215,534
Canada | ​ |  | 159,703 | ​ |  | 523,900 | ​ |  | 438,573 | ​ |  | 1,719,473
Mexico | ​ |  | — | ​ |  | 151,157 | ​ |  | — | ​ |  | 372,215
Total revenues | ​ | $ | 8,701,951 | ​ | $ | 2,572,178 | ​ | $ | 26,227,079 | ​ | $ | 9,307,222

​

In September 2025, the Company secured a five-year, sole-source Indefinite Delivery, Indefinite Quantity (IDIQ) contract with the U.S. Defense Logistics Agency (DLA) Strategic Materials, which is responsible for managing the National Defense Stockpile (NDS). The contract, with a maximum value of $245 million, is for the sale of antimony metal ingots (99.65% purity) to replenish the NDS through September 2030. Pricing is determined at the time each delivery order is placed based on prevailing market rates and each shipment will represent a separate performance obligation satisfied at a point in time. As a result, revenue will be recognized when each shipment of antimony metal ingots is delivered to the DLA’s depot and formally accepted by the government. At the end of September 2025, the Company announced it had received the first delivery order under its contract with the DLA. This initial order for the purchase of 315,000 pounds of antimony metal ingots is valued at approximately $10 million. During the three and nine months ended September 30, 2025, no revenue has been recognized related to this contract.

The Company’s trade accounts receivable balance related to contracts with customers was $1,898,184 at September 30, 2025 and $1,099,771 at December 31, 2024, which are net of allowances for credit losses of $15,963 and $10,165, respectively. The Company’s products do not involve any warranty agreements and product returns are not typical.

​

NOTE 6 – INVESTMENT SECURITIES HELD TO MATURITY

In April 2025, the Company purchased $9,991,259 of U.S. Treasury Strips with maturities ranging from approximately 12 to 54 months. These U.S. Treasury Strips are scheduled to mature approximately equally about every six months beginning in May 2026 and will generate interest yields of approximately 3.9%.

In September 2025, the Company purchased an additional $9,943,694 of U.S. Treasury Strips with maturities ranging from approximately 14 to 62 months. These U.S. Treasury Strips are scheduled to mature approximately equally every 12 months beginning in November 2026 and will generate interest yields of approximately 3.7%.

The Company has classified these securities as held-to-maturity because it has the intent and ability to hold them until their contractual maturity date. As a result, these securities are carried at amortized cost, which represents the original investment amount adjusted for the amortization of discounts using the effective interest method over the period from acquisition to maturity.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

The following is a summary of the Company’s investment securities held to maturity as of September 30, 2025:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Estimated Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
Investment securities held to maturity - current: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury Strips | ​ | $ | 1,270,666 | ​ | $ | 684 | ​ | $ | — | ​ | $ | 1,271,350
Investment securities held to maturity - noncurrent: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury Strips | ​ |  | 18,886,727 | ​ |  | 37,526 | ​ |  | (4,604) | ​ |  | 18,919,649
Total investment securities held-to-maturity | ​ | $ | 20,157,393 | ​ | $ | 38,210 | ​ | $ | (4,604) | ​ | $ | 20,190,999

​

The Company recognized interest income accretion on its U.S. Treasury Strips of $126,450 and $222,440 during the three and nine months ended September 30, 2025, respectively. There were no investment securities outstanding at December 31, 2024 or held during the nine months ended September 30, 2024.

Consistent with the Company’s classification of its U.S. Treasury Strips as held to maturity, those securities scheduled to mature in the next twelve months after the reporting date are considered current assets and those having maturity dates more than twelve months after the reporting date are considered non-current assets. At September 30, 2025, the Company’s held to maturity securities were scheduled to mature as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortized | ​ | Estimated Fair
Twelve months ending September 30, |  | Cost |  | Value
2026 | ​ | $ | 1,270,666 | ​ | $ | 1,271,350
2027 to 2030 | ​ |  | 18,886,727 | ​ |  | 18,919,649
Total investment securities held-to-maturity | ​ | $ | 20,157,393 | ​ | $ | 20,190,999

​

Line of Credit

The Company secured a $5,000,000 line of credit facility (“LOC”) in April 2025 with a national bank, which bears interest at one percent above the base commercial rate. In September 2025, the LOC was increased to $10,000,000. The Company’s investment securities serve as collateral for the LOC on which the Company had no outstanding borrowings at September 30, 2025.

​

NOTE 7 – INVENTORIES

Inventories at September 30, 2025 and December 31, 2024 consisted primarily of finished antimony metal ingots and antimony oxide products, antimony ore and concentrates, and finished zeolite products. Inventories are stated at the lower of first-in, first-out cost or estimated net realizable value. Finished antimony products and finished zeolite products primarily include direct materials, direct labor, overhead, depreciation, and freight. Inventories consisted of the following:

​

​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2025 |  | 2024
Antimony oxide | ​ | $ | 607,508 | ​ | $ | 254,372
Antimony metal ingots | ​ |  | 2,411,845 | ​ |  | 154,590
Antimony ore and concentrates | ​ |  | 4,972,787 | ​ |  | 335,588
Total antimony inventory | ​ |  | 7,992,140 | ​ |  | 744,550
Zeolite | ​ |  | 421,021 | ​ |  | 501,174
Total inventories | ​ | $ | 8,413,161 | ​ | $ | 1,245,724

​

At September 30, 2025 and December 31, 2024, inventories were valued at cost, except for the portion of inventory related to zeolite at December 31, 2024, which was valued at net realizable value because costs were greater than the amount the Company expected to receive upon the sale of the inventory. The adjustment to value zeolite inventory at net realizable value was $65,647 at December 31, 2024.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

Antimony oxide, metal ingots, and ore and concentrates were held primarily at the Company’s plants located in Montana and Mexico. Some antimony metal ingots are used in processing antimony ore into antimony oxide. Zeolite inventory was held at the Company’s plant located in Idaho.

​

NOTE 8 – PROPERTY, PLANT AND EQUIPMENT

The major components of the Company’s property, plant and equipment (“PP&E”) by segment at September 30, 2025 and December 31, 2024 were as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
September 30, 2025 |  | Antimony |  | Zeolite |  | All Other |  | TOTAL
Plant and equipment | ​ | $ | 13,754,833 | ​ | $ | 6,658,125 | ​ | $ | 520,926 | ​ | $ | 20,933,884
Buildings | ​ |  | 1,106,303 | ​ |  | 1,705,893 | ​ |  | 456,970 | ​ |  | 3,269,166
Mineral rights and interests | ​ |  | 230,000 | ​ |  | 16,753 | ​ |  | 5,669,863 | ​ |  | 5,916,616
Land | ​ |  | 2,083,094 | ​ |  | — | ​ |  | 929,443 | ​ |  | 3,012,537
Construction in progress | ​ |  | 9,131,631 | ​ |  | 353,429 | ​ |  | — | ​ |  | 9,485,060
Total property, plant and equipment | ​ |  | 26,305,861 | ​ |  | 8,734,200 | ​ |  | 7,577,202 | ​ |  | 42,617,263
Accumulated depreciation | ​ |  | (10,111,874) | ​ |  | (4,106,653) | ​ |  | (277,398) | ​ |  | (14,495,925)
Property, plant and equipment, net | ​ | $ | 16,193,987 | ​ | $ | 4,627,547 | ​ | $ | 7,299,804 | ​ | $ | 28,121,338

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2024 |  | Antimony |  | Zeolite |  | All Other |  | TOTAL
Plant and equipment | ​ | $ | 13,512,321 | ​ | $ | 6,597,781 | ​ | $ | 427,720 | ​ | $ | 20,537,822
Buildings | ​ |  | 1,106,303 | ​ |  | 1,705,893 | ​ |  | 11,970 | ​ |  | 2,824,166
Mineral rights and interests | ​ |  | — | ​ |  | 16,753 | ​ |  | 125,000 | ​ |  | 141,753
Land | ​ |  | 2,083,094 | ​ |  | — | ​ |  | 914,443 | ​ |  | 2,997,537
Construction in progress | ​ |  | — | ​ |  | 101,938 | ​ |  | — | ​ |  | 101,938
Total property, plant and equipment | ​ |  | 16,701,718 | ​ |  | 8,422,365 | ​ |  | 1,479,133 | ​ |  | 26,603,216
Accumulated depreciation | ​ |  | (9,602,469) | ​ |  | (3,857,785) | ​ |  | (251,515) | ​ |  | (13,711,769)
Property, plant and equipment, net | ​ | $ | 7,099,249 | ​ | $ | 4,564,580 | ​ | $ | 1,227,618 | ​ | $ | 12,891,447

​

In February 2025, the Company purchased a personal residence located near its operations in Thompson Falls, Montana for $445,000, which is presently being used by management personnel that were transferred there and are now working in Montana predominantly on our plant expansion efforts. This asset and related expenses are included in the “All Other” category in the Company’s segment reporting.

Mineral rights and interests

In January 2025, the Company executed an agreement to acquire the ownership rights to one hundred and twenty mining claims located in the Fairbanks District of Alaska (“January Fairbanks Agreement”). Payments to acquire these claims have been or will be made by the Company on or around the payment dates indicated as follows:

​

​ | ​ | ​ | ​
Payment Date |  | Payment Amount
January 2025 | ​ | $ | 100,000
July 2025 | ​ |  | 50,000
January 2026 | ​ |  | 50,000
July 2026 | ​ |  | 50,000
January 2027 | ​ |  | 50,000
July 2027 | ​ |  | 50,000
January 2028 | ​ |  | 50,000
July 2028 | ​ |  | 50,000
January 2029 | ​ |  | 100,000
July 2029 | ​ |  | 100,000
January 2030 | ​ |  | 100,000
July 2030 | ​ |  | 2,250,000
Total | ​ | $ | 3,000,000

​

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

The January Fairbanks Agreement requires a royalty payment by the Company based on the value realized from ore mined from the claims (“Net Smelter Royalty on Claims”) and another royalty payment by the Company based on the value realized from ore mined, if any, from certain areas surrounding these one hundred and twenty mining claims (“Net Smelter Royalty on Surrounding Area”). A certain percentage of the Net Smelter Royalty on Claims can be purchased back by the Company with certain factors causing an escalation in this buyback amount. Also, the January Fairbanks Agreement includes a commitment by the Company to spend an aggregate of $2,250,000 on exploring and developing these claims over five years beginning January 2025, with various milestones over this five-year period. The January Fairbanks Agreement can be terminated without cause at any time by the Company with notice.

In March 2025, the Company executed an agreement to acquire the ownership rights to twenty-five additional mining claims and leases located in the Fairbanks District of Alaska (“March Fairbanks Agreement”). Payments to acquire these claims and leases have been or will be made by the Company on or around the payment dates indicated as follows:

​

​ | ​ | ​ | ​
Payment Date |  | Payment Amount
March 2025 | ​ | $ | 50,000
September 2025 | ​ |  | 25,000
March 2026 | ​ |  | 25,000
March 2027 | ​ |  | 25,000
March 2028 | ​ |  | 25,000
March 2029 | ​ |  | 275,000
Total | ​ | $ | 425,000

​

The March Fairbanks Agreement requires a royalty payment by the Company based on the value realized from ore mined from the claims and leases (“Net Smelter Royalty”). A certain percentage of the Net Smelter Royalty can be purchased back by the Company. Also, the March Fairbanks Agreement includes a commitment by the Company to spend an aggregate of $250,000 on exploring and developing these claims and leases over approximately forty-one months beginning March 2025, with various milestones over this period. The March Fairbanks Agreement can be terminated without cause by the Company with notice.

In May 2025, the Company paid $230,000 to acquire the surface rights related to its patented lode mining claim located in Thompson Falls, Montana.

In June 2025, the Company acquired property located in the Sudbury District of Ontario, Canada, which included 50 single-cell mining claims (the Fostung Properties) for $5,000,000. Direct transaction costs related to this acquisition totaled $25,120. In addition, the agreement requires the Company to pay a net smelter return royalty based on the value realized from ore mined from the property.

Effective June 1, 2025, the Company executed an agreement to acquire the ownership rights to various patented federal lode mining claims located in the Fairbanks District of Alaska (“June Fairbanks Agreement”). Payments to acquire these claims are scheduled to be made by the Company as follows:

​

​ | ​ | ​ | ​
Payment Date |  | Payment Amount
Within 10 days of June 1, 2025 | ​ | $ | 150,000
December 2025 | ​ |  | 100,000
June 2026 | ​ |  | 100,000
June 2027 | ​ |  | 100,000
June 2028 | ​ |  | 100,000
June 2029 | ​ |  | 1,450,000
Total | ​ | $ | 2,000,000

​

The June Fairbanks Agreement requires net smelter royalty payments be made by the Company based on the value realized from ore mined from the claims. Also, the agreement includes a commitment by the Company to spend an aggregate of $700,000 in exploring and developing these claims based on various milestones scheduled to occur over approximately thirty-nine months from the effective date of the agreement. This agreement can be terminated without cause at any time by the Company with ninety-days’ notice.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

In September 2025, the Company executed an agreement to acquire the ownership rights to mining claims located in the Fairbanks District of Alaska (“September Fairbanks Agreement”). Payments to acquire these claims have been or will be made by the Company on or around the payment dates indicated as follows:

​

​ | ​ | ​ | ​
Payment Date |  | Payment Amount
September 2025 | ​ | $ | 50,000
March 2026 | ​ |  | 25,000
September 2026 | ​ |  | 50,000
September 2027 | ​ |  | 50,000
September 2028 | ​ |  | 50,000
September 2029 | ​ |  | 275,000
Total | ​ | $ | 500,000

​

The September Fairbanks Agreement requires a royalty payment by the Company based on the value realized from ore mined from the claims (“Net Smelter Royalty”). A certain percentage of the Net Smelter Royalty can be purchased back by the Company. Also, the September Fairbanks Agreement includes a commitment by the Company to spend an aggregate of $250,000 on exploring and developing these claims over approximately thirty-six months beginning September 2026, with various milestones over this period. The September Fairbanks Agreement can be terminated without cause by the Company with notice.

The payments made to acquire these mining claims and leases, including any direct transaction costs, are capitalized in the “Mineral rights and interests” component of PP&E in the Condensed Consolidated Balance Sheets and included in the “All Other” category for segment reporting.

​

NOTE 9 – LEASES

Philipsburg Operating Lease

In September 2024, the Company executed a contract to lease a metals concentration facility located in Philipsburg, Montana. The Company amended this lease in March 2025 extending the term of the lease to September 2, 2026 and modifying the fixed monthly lease payments to $10,000 per month through the month of June 2025, $20,000 per month during the months of July 2025 to October 2025, and $95,000 per month thereafter to the end of the lease term. The $95,000 per month payment included a fixed monthly fee of $45,000 and a minimum milling fee of $50,000 per month. An additional payment of $50 per ton was due each month in the last twelve months of the lease for all milling in excess of 1,000 tons per month. The Company did not include any milling fee payments above the minimum in its lease liability as it was not deemed probable at that time. The Company recorded the present value of the original fixed lease cost in September 2024 over the lease term as a lease liability and Right of Use (“ROU”) asset. As a result of the amendment in March 2025, the Company reduced the ROU asset and corresponding lease liability by $37,448. The Company used its incremental borrowing rate of 3.49% when determining the present value of future payments of this operating lease as the rate implicit in the lease was not readily determinable.

During the three and nine months ended September 30, 2025, the Company recorded $85,032 and $389,542, respectively, of lease expense related to this lease and initial direct costs (“IDC”) in “Cost of Revenues” in the Condensed Consolidated Statements of Operations. Lease payments were $40,000 and $110,000 during the three and nine months ended September 30, 2025, respectively, which were included in operating cash flows. For both the three and nine months ended September 30, 2024, the Company recorded $33,611 of lease expense and IDC related to this lease. Lease payments totaling $15,000 were made during the three and nine months ended September 30, 2024, and included in operating cash flows. The Company paid $10,000 of IDC at the inception of the original lease agreement.

On September 22, 2025, the lessor terminated the Philipsburg operating lease agreement one year early. This event resulted in derecognition of the associated account balances, specifically reducing operating lease liabilities by $631,690, right-of-use assets by $151,868, and prepaid rent by $10,000. The resulting difference was a non-cash gain on lease termination of $469,822, which was presented in the Condensed Consolidated Statements of Operations as a separate item within the Operating Expenses section. Furthermore, no termination penalties were incurred or incentives received in connection with the lease termination. Machinery and equipment with a net book value of $29,621, which had been used at the Philipsburg location, will be used at a different operating site.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

Finally, unpaid operating charges, such as utility and labor costs incurred through the termination date, were recognized separately as ordinary operating expenses and not included in the calculation of the gain.

Dallas Operating Lease

In the first quarter of 2025, the Company executed a contract to lease office space for its corporate headquarters located in Dallas, Texas with a lease term of 24 months and total fixed payments during the term of $3,945 per month, or $94,680 in total. The Company is amortizing the lease on a straight-line basis over the term of the lease. The Company recorded the present value of the lease payments over the term as a lease liability and ROU asset. The Company’s incremental borrowing rate of 3.49% was used as the discount rate since the rate implicit in the lease was not readily determinable. The lease does not include any transfer of ownership of the office space at the end of the lease, nor any option to extend the lease or purchase the facility, nor any residual value guarantees. The Company cannot terminate the lease without cause and must provide the office space to the lessor at the end of the lease in the same condition as it was received.

The lease liability related to this operating lease, which represents the present value of the lease payments, and ROU asset were $63,416 at inception of the lease and $36,288 and $nil at September 30, 2025 and December 31, 2024, respectively. During the three and nine months ended September 30, 2025, the Company recorded $11,835 and $31,560, respectively, of lease expense related to this lease in “General and administrative” in the Condensed Consolidated Statements of Operations. Lease payments were $11,835 and $31,560 during the three and nine months ended September 30, 2025, respectively, which were included in operating cash flows. The Company made a security deposit payment of $3,945 at the inception of the lease. For the three and nine months ended September 30, 2024, there were no payments made or expense recorded for this lease.

The following table summarizes expense and cash payments for both operating leases during the periods noted:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Nine months ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
Operating lease expense | ​ | $ | 96,867 | ​ | $ | 33,611 | ​ | $ | 421,102 | ​ | $ | 33,611
Cash paid for operating lease liability | ​ |  | 51,835 | ​ |  | 15,000 | ​ |  | 131,560 | ​ |  | 15,000
Cash paid for security deposit | ​ |  | — | ​ |  | 10,000 | ​ |  | 3,945 | ​ |  | 10,000

​

At September 30, 2025, the remaining lease term of the Dallas operating lease was 16 months and the discount rate used was 3.49%.

The following table is a maturity analysis of the future minimum lease payments for the Dallas operating lease as of September 30, 2025:

​ | ​ | ​ | ​
Twelve months ending September 30, |  | ​ | ​
2026 | ​ | $ | 47,340
2027 | ​ |  | 15,780
Total operating lease payments | ​ |  | 63,120
Less: discount on lease liability | ​ |  | (26,832)
Total operating lease liability | ​ |  | 36,288
Less: current portion of operating lease liability | ​ |  | (28,990)
Noncurrent operating lease liability | ​ | $ | 7,298

​

​

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

NOTE 10 – LONG-TERM DEBT

Long-term debt at September 30, 2025 and December 31, 2024 was as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2025 |  | December 31, 2024
Installment contract payable to Komatsu, bearing interest at 3.49%, payable in 36 monthly installments of $11,799 maturing May 2027; collateralized by the Wheel Loader | ​ | $ | 228,921 | ​ | $ | 327,677
Less current portion of debt | ​ |  | (135,754) | ​ |  | (132,252)
Long-term debt, net | ​ | $ | 93,167 | ​ | $ | 195,425

​

At September 30, 2025, the scheduled maturities of debt outstanding for each of the next two years were as follows:

​

​ | ​ | ​ | ​
Twelve months ending September 30, |  | Total
2026 | ​ | $ | 135,754
2027 | ​ |  | 93,167
Total | ​ | $ | 228,921

​

​

​

NOTE 11 – INCOME AND OTHER TAXES

Management estimates that the Company’s 2025 effective tax rate will be 0% due to the Company’s historical operating losses, tax loss carryforward, and other available evidence related to the Company’s ability to generate taxable income. Accordingly, there is no income tax expense or benefit recorded for the three- and nine-month periods ended September 30, 2025.

Mexico Tax Assessment

In 2015, the Mexican tax authority (“SAT”) initiated an audit of the U.S. Antimony de Mexico, S.A. de C.V. (“USAMSA”) 2013 income tax return. In October 2016, as a result of its audit, SAT assessed the Company $13.8 million pesos, which was approximately $666,400 in U.S. Dollars (“USD”) as of December 31, 2016. SAT’s assessment was based on the disallowance of specific costs that the Company deducted on the 2013 USAMSA income tax return. The assessment was settled in 2018 with no assessment due from the Company.

In 2019, the Company was notified that SAT re-opened its assessment of USAMSA’s 2013 income tax return and, in November 2019, SAT assessed the Company $16.3 million pesos, which was approximately $865,000 USD as of December 31, 2019. Management reviewed the 2019 assessment notice from SAT and, similar to the earlier assessment, believed the findings have no merit. An appeal was filed by the Company in November 2019 suspending SAT from taking immediate action regarding the assessment. In August 2020, the Company filed a lawsuit against SAT for resolution of the process and, in December 2020, filed closing arguments. In 2022, the Mexican court ruled against the Company in the above matter, which was subsequently appealed by the Company.

As of December 31, 2023, the updated SAT assessment was approximately $22.4 million pesos, or approximately $1,320,000 USD, which includes $352,000 of unpaid income taxes and $968,000 of interest and penalties. Management, along with its legal counsel, assessed the possible outcomes for this tax audit and believed, based on discussions with its attorneys located in Mexico, that the most likely outcome would be that the Company would be successful in its appeal resulting in no tax due. Management determined that no amount should be accrued at December 31, 2023 relating to this potential tax liability.

In March 2024, Mexico’s appellate court ruled in favor of the Company with no assessment due related to this audit of USAMSA’s 2013 income tax return by SAT and instructed the lower court to issue a new ruling. In May 2024, Mexico’s lower court issued a final ruling on this matter in favor of the Company but left open the possibility for the SAT to re-open their audit. Subsequent to this judgment, the Company requested a final ruling on whether SAT can re-open this matter, on which the appellate court has not ruled. These rulings support the Company’s position on this tax matter and have had no impact on the Company’s financial statements.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

Mexico Import Value Added Tax

USAMSA has a receivable of $1,350,940 and $907,408 at September 30, 2025 and December 31, 2024, respectively, related to Import Value Added Tax (“IVA tax” or “VAT”) it pays on certain goods and services, which represents the amounts to be reimbursed from the Mexican government. USAMSA also has established an allowance for estimated uncollectible amounts associated with this IVA tax receivable of $772,501 and $575,151 at September 30, 2025 and December 31, 2024, respectively. The net IVA tax receivable of $578,439 and $332,257 at September 30, 2025 and December 31, 2024, respectively, is recorded in “IVA receivable and other assets, net” in the Condensed Consolidated Balance Sheets.

NOTE 12 – COMMITMENTS AND CONTINGENCIES

Historically, BRZ has from time-to-time been assessed fines and penalties by the Mine Safety and Health Administration (“MSHA”). During the nine months ended September 30, 2025, BRZ received three citations from MSHA, one of which was significant and substantial. All three citations were rectified by BRZ and terminated by MSHA on the day the citations were issued. At September 30, 2025 and December 31, 2024, BRZ had “accrued liabilities” in the Condensed Consolidated Balance Sheets of $nil and $19,074, respectively, relating to MSHA citations.

BRZ has a lease with Zeolite, LLC that entitles BRZ to surface mine and process zeolite on property in Preston, Idaho, in exchange for an annual payment and a royalty payment, which is based on the amount of zeolite shipped from the leased property (“BRZ Lease”). In February 2025, the Company extended the BRZ Lease through December 31, 2034 with similar terms and conditions as the prior agreement.

In April 2025, the Company began contracting for engineering and construction services to expand its existing smelting operating capacity located in Thompson Falls, Montana. Total capital expenditures associated with the expansion plans are estimated to be approximately $22.4 million of which approximately $17.8 million has been formally agreed to with various third-party vendors. As of September 30, 2025, the Company has paid approximately $8 million toward these commitments which is included in the “Construction in progress” component of PP&E in the Condensed Consolidated Balance Sheets.

NOTE 13 – STOCKHOLDERS’ EQUITY

Issuance of Common Stock

During the nine months ended September 30, 2025 and 2024, the Company issued 2,100,699 shares and 791,667 shares, respectively, of its common stock in conjunction with the vesting of restricted stock units (“RSUs”) and exercising of stock options. See the “Share-Based Compensation” section below for further details.

Sale of Common Stock

During the nine months ended September 30, 2025, the Company sold 5,513,358 shares of its common stock in an “at the market offering” and received gross proceeds of $21,387,718 based on a weighted average price of $3.88 per share. Direct issuance costs totaling $435,862 were incurred related to these sales. The aggregate net proceeds received by the Company, after deducting offering fees and expenses, totaled $20,951,856. The Company did not sell any of its common stock during the nine months ended September 30, 2024.

On August 27, 2025, the Company completed a registered direct offering with an institutional investor. The offering resulted in the sale of 4,000,000 shares of common stock at a purchase price of $4.50 per share for $18,000,000 in gross proceeds. For this offering, the Company incurred direct issuance costs of $511,260, which consisted primarily of placement agent commissions and various legal, accounting, and filing costs. The aggregate net proceeds received by the Company, after deducting offering fees and expenses, totaled $17,488,740.

During the nine months ended September 30, 3025, the Company issued 5,772,822 shares of its common stock and received proceeds of $4,427,756 pursuant to the exercise of pre-existing warrants. See the “Common Stock Warrants” section below for further details.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

Share-based compensation

In December 2023, shareholders approved the Company’s 2023 Equity Incentive Plan (“the Plan”), which provides for the grant of incentive stock options, non-qualified stock options and other types of awards. The general purpose of the Plan is to provide a means whereby eligible employees, officers, directors and other service providers develop a sense of proprietorship and personal involvement in our development and financial success, and to encourage them to devote their best efforts to our business, thereby advancing our interests and the interests of our shareholders. On July 31, 2025, the Company’s shareholders approved the Amended and Restated 2023 Equity Incentive Plan (the “Amended Plan”). The maximum number of shares of common stock available for issuance under the Amended Plan is 23,700,000 shares.

During the nine months ended September 30, 2025, the Company granted stock options and RSUs totaling 2,391,400 and 2,182,800, respectively. Once vested, each stock option and RSU represents the right to receive one share of the Company’s common stock.

Share-based compensation expense for the periods noted was as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
Stock options | ​ | $ | 2,083,722 | ​ | $ | 97,655 | ​ | $ | 2,487,805 | ​ | $ | 161,124
RSUs | ​ |  | 1,772,753 | ​ |  | 55,064 | ​ |  | 2,200,967 | ​ |  | 292,442
Total share-based compensation expense | ​ | $ | 3,856,475 | ​ | $ | 152,719 | ​ | $ | 4,688,772 | ​ | $ | 453,566

​

The following table summarizes the aggregate non-cash stock-based compensation recognized in the Condensed Consolidated Statement of Operations for stock options and RSUs:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
General and administrative | ​ | $ | 145,828 | ​ | $ | 67,708 | ​ | $ | 476,921 | ​ | $ | 295,485
Salaries and benefits | ​ |  | 3,706,746 | ​ |  | 82,410 | ​ |  | 4,200,149 | ​ |  | 155,480
Professional fees | ​ |  | 3,901 | ​ |  | 2,601 | ​ |  | 11,702 | ​ |  | 2,601
Total non-cash share-based compensation expense | ​ | $ | 3,856,475 | ​ | $ | 152,719 | ​ | $ | 4,688,772 | ​ | $ | 453,566

​

Stock options

Stock options granted have either a 3-year or 10-year contractual term and are subject to either service or performance-based vesting conditions. The following table summarizes the weighted-average assumptions used to value stock options granted during the nine months ended September 30, 2025 using the Black-Scholes method:

​

​ | ​ | ​ | ​ | ​
​ |  | Nine Months |
​ | ​ | Ended |
​ | ​ | September |
Weighted-Average Grant Date Assumptions | ​ | 30, 2025 |
Expected term (in years) |  | ​ | 9.3 | ​
Risk-free interest rate |  | ​ | 4.3 | %
Expected dividend yield |  | ​ | 0.0 | %
Expected volatility |  | ​ | 96.0 | %
Fair value per share | ​ | $ | 2.49 | ​

​

Expected term – The expected term represents the period of time that options are expected to be outstanding. As the Company does not have sufficient historical exercise behavior, it uses the contractual term of the option or the simplified method as defined in Staff Accounting Bulletin Topic 14 for the expected term assumption.

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September 30, 2025

Risk-free interest rate – The risk-free interest rate is based on the U.S. Treasury rate in effect at the time of the grant with an equivalent term approximating the expected term of the options.

Expected dividend yield—The Company bases the expected dividend yield assumption on the fact that it has never paid cash dividends and has no present intention to pay cash dividends.

Expected volatility – The expected volatility is based on the historical volatility of our stock price over the expected term of the stock option.

Activity with respect to stock options is summarized as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted- | ​ | Weighted- | ​ | ​ | ​
​ | ​ | ​ | ​ | Average | ​ | Average | ​ | ​ | ​
​ | ​ | ​ | ​ | Exercise | ​ | Remaining | ​ | Aggregate
​ | ​ | ​ | ​ | Price Per | ​ | Contractual | ​ | Intrinsic
​ |  | Shares |  | Share |  | Term (in years) |  | Value
Options outstanding, December 31, 2024 |  | 4,330,000 | ​ | $ | 0.23 |  | 3.7 | ​ | $ | 6,652,700
Granted |  | 2,391,400 | ​ |  | 2.41 |  | — | ​ |  | —
Exercised |  | (672,500) | ​ |  | 0.23 |  | — | ​ |  | —
Forfeited |  | (166,667) | ​ |  | 0.22 |  | — | ​ |  | —
Expired |  | — | ​ |  | — |  | — | ​ |  | —
Options outstanding, September 30, 2025 |  | 5,882,233 | ​ | $ | 1.12 |  | 5.7 | ​ | $ | 29,818,109
Nonvested options, September 30, 2025 |  | 5,190,566 | ​ | $ | 1.21 |  | 5.8 | ​ | $ | 25,801,817
Vested and exercisable options, September 30, 2025 |  | 691,667 | ​ | $ | 0.39 |  | 4.4 | ​ | $ | 4,016,292

​

At September 30, 2025, total unrecognized share-based compensation expense related to stock options was $3,992,315, which is expected to be recognized over a weighted-average remaining period of 0.8 years. During the nine months ended September 30, 2025, 672,500 stock options were exercised to purchase shares of common stock. These exercises included 250,000 options for cash proceeds of $55,000 and cashless exercises where 52,461 shares of common stock were acquired by the Company as treasury stock to pay for the aggregate exercise price of the stock options and 370,039 shares of common stock were issued to the award recipients. See the “Treasury Stock” section below for further details. The total intrinsic value of the 672,500 stock options exercised during the nine months ended September 30, 2025 was $1,410,033.

Restricted stock units

Activity with respect to RSUs is summarized as follows:

​

​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted-
​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Grant Date
​ | ​ | ​ | ​ | Fair Value
​ |  | Shares |  | Per Share
RSUs outstanding at December 31, 2024 |  | 2,090,000 | ​ | $ | 0.24
Granted |  | 2,182,800 | ​ |  | 2.86
Vested |  | (1,428,199) | ​ |  | 1.16
Forfeited |  | — | ​ |  | —
RSUs outstanding at September 30, 2025 |  | 2,844,601 | ​ | $ | 1.79

​

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

At September 30, 2025, total unrecognized share-based compensation expense related to RSUs was $4,306,192, which is expected to be recognized over a weighted-average remaining period of 2.1 years. The weighted-average remaining contractual term of the nonvested RSU shares was 1.5 years at September 30, 2025. During the nine months ended September 30, 2025, 1,428,199 shares of common stock were issued pursuant to the vesting of RSUs. In a related transaction, 88,399 of the newly issued common shares were acquired by the Company as treasury stock to satisfy the mandatory payroll tax obligations resulting from the RSU vesting. See the “Treasury Stock” section below for further details.

Common stock warrants

During the first nine months of 2025, the Company issued 5,772,822 shares of common stock related to the exercise of pre-existing warrants and received gross proceeds of $4,427,756, based on a weighted average exercise price of $0.77 per share. No warrants were issued or expired during the nine months ended September 30, 2025 and 2024 nor were any warrants exercised during the nine months ended September 30, 2024.

Following is a summary of the Company’s warrant activity during the nine months ended September 30, 2025:

​

​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | Number of | ​ | Average
​ |  | Warrants |  | Exercise Price
Balance at December 31, 2024 |  | 10,142,215 | ​ | $ | 0.77
Exercised |  | (5,772,822) | ​ |  | 0.77
Balance at September 30, 2025 |  | 4,369,393 | ​ | $ | 0.77

​

Each warrant represents the right to receive one share of the Company’s common stock. The composition of the Company’s warrants outstanding at September 30, 2025 was as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Number of warrants |  | Exercise Price |  | Expiration Date |  | Remaining life (years)
857,143 | ​ | $ | 0.46 |  | 1/27/2026 |  | 0.33
806,500 | ​ | $ | 0.85 |  | 2/1/2026 |  | 0.34
2,705,750 | ​ | $ | 0.85 |  | 8/3/2026 |  | 0.84
4,369,393 | ​ |  |  |  |  |  |

​

All outstanding warrants of the Company expire on or before August 3, 2026.

Treasury Stock

The Company accounts for purchases and sales of treasury stock using the cost method. Shares are recorded at their acquisition price, with a corresponding debit to the treasury stock account. Upon subsequent sale, the treasury stock account is credited for the shares’ original cost, and any difference between the selling price and cost is recognized in additional paid-in capital. The Company does not recognize gains or losses on treasury stock transactions in the consolidated statement of operations

The Company retains and holds shares of its common stock as treasury stock to manage the settlement of employee equity awards. Shares are retained primarily to cover the option exercise price and, if any, required tax withholding for cashless stock option exercises and to satisfy employees’ tax obligations upon RSU vesting. During the nine months ended September 30, 2025, 52,461 newly issued common shares with a cost of $101,429 were retained by the Company as treasury stock to pay for the aggregate exercise price of the stock options and 88,399 of newly issued common shares with a cost of $409,246 were retained by the Company as treasury stock to satisfy the mandatory payroll tax obligations resulting from the vesting of RSUs. There were no common shares retained and transferred to treasury stock during the nine months ended September 30, 2024.

​

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

NOTE 14 – BUSINESS SEGMENTS

The Company has two reportable segments: antimony and zeolite. Our antimony segment consists of:

| ● | Our facility located in the Burns Mining District of Sanders County in Montana that processes ore primarily into antimony oxide, antimony metal ingots, antimony trisulfide, and precious metals, and

| ● | Two facilities in our USAMSA subsidiary located in Mexico, one being a rock crushing mill and the other a smelter, that process ore primarily into antimony metal ingots, a lower grade of antimony oxide, and precious metals.

Our zeolite segment consists of our facility located in Preston, Idaho that mines, processes, and sells zeolite.

The following components of the Company’s business were not engaged in business activities at September 30, 2025 from which they recognized revenue offset by related expenses: Los Juarez, Mexico in our ADM subsidiary, Ontario, Canada, Alaska, and the mining claims in Thompson Falls, Montana. Therefore, these components, along with the Company’s personal residence in Thompson Falls, Montana, have been included in the “All Other” category for segment reporting. The Company’s chief operating decision maker is its chief executive officer.

Total assets by segment at September 30, 2025 and December 31, 2024 were as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​
Total Assets |  | September 30, 2025 |  | December 31, 2024
Antimony segment | ​ | $ | 66,518,746 | ​ | $ | 27,230,312
Zeolite segment | ​ |  | 5,815,663 | ​ |  | 5,604,003
All other | ​ |  | 7,547,932 | ​ |  | 1,808,287
Total assets | ​ | $ | 79,882,341 | ​ | $ | 34,642,602

​

Total capital expenditures by segment for the three and nine months ended September 30, 2025 and 2024 were as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | Nine months ended September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
Antimony segment | ​ | $ | 7,928,732 | ​ | $ | — | ​ | $ | 9,374,143 | ​ | $ | —
Zeolite segment | ​ |  | 284,833 | ​ |  | 62,337 | ​ |  | 367,032 | ​ |  | 213,058
All other | ​ |  | 461,606 | ​ |  | 10,000 | ​ |  | 6,328,069 | ​ |  | 10,000
Total capital expenditures | ​ | $ | 8,675,171 | ​ | $ | 72,337 | ​ | $ | 16,069,244 | ​ | $ | 223,058

​

Selected segment operational information for the three and nine months ended September 30, 2025 and 2024 were as follows:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Three months ended September 30, 2025 |  | Antimony |  | Zeolite |  | All Other |  | Total
Total revenues | ​ | $ | 8,030,005 | ​ | $ | 671,946 | ​ | $ | — | ​ | $ | 8,701,951
Depreciation and amortization | ​ |  | 170,813 | ​ |  | 98,678 | ​ |  | 10,337 | ​ |  | 279,828
Loss from operations | ​ |  | (3,646,313) | ​ |  | (236,420) | ​ |  | (1,034,449) | ​ |  | (4,917,182)
Other income | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | 136,482
Income tax expense | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | —
Net loss | ​ |  |  | ​ |  |  | ​ |  |  | ​ | $ | (4,780,700)

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Three months ended September 30, 2024 |  | Antimony |  | Zeolite |  | All Other |  | Total
Total revenues | ​ | $ | 1,889,231 | ​ | $ | 682,947 | ​ | $ | — | ​ | $ | 2,572,178
Depreciation and amortization | ​ |  | 19,901 | ​ |  | 95,659 | ​ |  | 4,024 | ​ |  | 119,584
Loss from operations | ​ |  | (44,384) | ​ |  | (713,180) | ​ |  | (133,457) | ​ |  | (891,021)
Other income | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | 163,512
Income tax expense | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | —
Net loss | ​ |  |  | ​ |  |  | ​ |  |  | ​ | $ | (727,509)

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nine months ended September 30, 2025 |  | Antimony |  | Zeolite |  | All Other |  | Total
Total revenues | ​ | $ | 23,572,156 | ​ | $ | 2,654,923 | ​ | $ | — | ​ | $ | 26,227,079
Depreciation and amortization | ​ |  | 509,404 | ​ |  | 304,065 | ​ |  | 25,884 | ​ |  | 839,353
Loss from operations | ​ |  | (1,669,738) | ​ |  | (666,448) | ​ |  | (2,202,997) | ​ |  | (4,539,183)
Other income | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | 486,562
Income tax expense | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | —
Net loss | ​ |  |  | ​ |  |  | ​ |  |  | ​ | $ | (4,052,621)

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nine months ended September 30, 2024 |  | Antimony |  | Zeolite |  | All Other |  | Total
Total revenues | ​ | $ | 7,026,884 | ​ | $ | 2,280,338 | ​ | $ | — | ​ | $ | 9,307,222
Depreciation and amortization | ​ |  | 59,598 | ​ |  | 268,547 | ​ |  | 12,072 | ​ |  | 340,217
Income (loss) from operations | ​ |  | 723,385 | ​ |  | (1,720,314) | ​ |  | (308,538) | ​ |  | (1,305,467)
Other income | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | 457,982
Income tax expense | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | —
Net loss | ​ |  |  | ​ |  |  | ​ |  |  | ​ | $ | (847,485)

​

​

Note 15 - SUBSEQUENT EVENTS

Sales of Common Stock

During October 2025, the Company sold 1,996,751 shares of its common stock in an “at the market offering” and received gross proceeds of $15,995,150 based on a weighted average price of $8.01 per share.

Registered Direct Offerings of Common Stock

On October 6, 2025, the Company completed a registered direct offering with the same institutional investor as was completed on August 27, 2025 (see Note 13 — Stockholders’ Equity). This offering resulted in the sale of 3,500,000 shares of common stock at a purchase price of $7.50 per share for $26,250,000 in gross proceeds.

On October 10, 2025, the Company completed a registered direct offering with a leading long-only mutual fund investor. This offering resulted in the sale of 2,377,657 shares of common stock at a purchase price of $10.50 per share for $24,965,399 in gross proceeds.

Aggregate gross proceeds from these two registered direct offerings combined with the gross proceeds from the registered direct offering completed on August 27, 2025, as noted above, totaled $69,215,399.

Common stock warrants

In October 2025, the Company issued 1,535,500 shares of common stock related to the exercise of warrants and received gross proceeds of $1,305,175, based on their exercise price of $0.85 per share.

Supply Agreement and Promissory Note

In October 2025, the Company entered into a supply agreement with an international supplier for the purchase of antimony that meets specified quality standards over a period of approximately 36 months. On the same date as this agreement, the Company extended a promissory note for $2,500,000 to the supplier. This note bears interest at 3.81% with principal and interest payments scheduled to be made in weekly installments of $500,000 beginning in December 2025, with the remaining balance of principal and interest due in January 2026. The loan proceeds are to be used by the supplier, subject to the Company’s approval, to purchase antimony concentrate and equipment. Payment of the promissory note is secured by all assets of the borrower and a corresponding personal guarantee from the principal owner.

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UNITED STATES ANTIMONY CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

September 30, 2025

Purchase of Property in Alaska

In October 2025, the Company completed the acquisition of property in Fairbanks, Alaska for a total purchase price of $1,200,000. The property includes five buildings and approximately 17 acres of land. The payment made to acquire these assets, along with any direct transaction costs and liabilities assumed, will be allocated to the land and buildings based on their relative fair values and included in the “All Other” category for segment reporting.

Investment in Australian-Based Mineral Exploration and Development Company

During October 2025, the Company acquired approximately 10% of the total issued share capital of Larvotto Resources Limited (“Larvotto”), an Australian-based mineral exploration and development company focused on critical minerals, particularly antimony and gold, through open-market cash purchases totaling $37 million.

Supply Agreement with New Industrial Customer

In November 2025, the Company executed a five-year supply agreement with a new industrial customer for the sale of antimony trioxide. After completing the monthly delivery schedule through December 2026 specified in the agreement, subsequent deliveries, pricing (pursuant to semiannual market-based adjustments), and volume commitments are subject to mutual written agreement every six months.

Acquisition of Mining Claims

In November 2025, the Company executed a mining option agreement to acquire certain mining rights to mining claims located in the state of Alabama. This agreement includes payments totaling $375,000 to be made by the Company over the next three years to acquire these mining claims, a commitment by the Company to spend an aggregate of $1,200,000 over the next three years to explore and develop these claims, and royalty payments to be made by the Company based on the value realized from ore mined from these claims. This agreement can be terminated without cause at any time by the Company with notice.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS AND PLAN OF OPERATION.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Readers should note that, in addition to the historical information contained herein, this Quarterly Report and the exhibits attached hereto contain “forward-looking statements” within the meaning of, and intended to be covered by, the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are based upon current expectations and beliefs concerning future developments and their potential effects on United States Antimony Corporation (“US Antimony,” “USAC,” or the “Company”) including matters related to the Company’s operations, pending contracts and future revenues, financial performance, and profitability, ability to execute on its increased production and installation schedules for planned capital expenditures, and the size of forecasted deposits. Although the Company believes that the expectations reflected in the forward-looking statements and the assumptions upon which they are based are reasonable, it can give no assurance that such expectations and assumptions will prove to have been correct. The reader is cautioned not to put undue reliance on these forward-looking statements, as these statements are subject to numerous factors and uncertainties.

Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always using words or phrases such as “believes,” “expects” or “does not expect,” “is expected,” “outlook,” “anticipates” or “does not anticipate,” “plans,” “estimates,” “forecast,” “project,” “pro forma,” or “intends,” or stating that certain actions, events or results “may” or “could,” “would,” “might” or “will” be taken, occur or be achieved) are not statements of historical fact and may be forward-looking statements. Forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made and are subject to assumptions and uncertainties. Forward-looking statements are subject to a variety of known and unknown risks, uncertainties and other factors which could cause actual events or results to differ from those expressed or implied by the forward-looking statements, including, without limitation, risks related to:

| ● | The Company’s properties being in the exploration stage;

| ● | Macroeconomic factors;

| ● | The imposition of new tariffs, changes in trade policy or agreements, or the escalation of trade tensions between the United States and other countries or regions could have a material adverse impact on our business;

| ● | Continued operational losses;

| ● | Negative consequences related to mineral operations being subject to existing and new government regulations within and outside the United States;

| ● | The Company’s ability to obtain additional capital to develop the Company’s resources, if any;

| ● | Concentration of customers;

| ● | Increase in energy costs;

| ● | Mineral exploration and development activities;

| ● | Mineral estimates;

| ● | The Company’s insurance coverage for operating risks;

| ● | The fluctuation of prices for antimony and precious metals, such as gold and silver;

| ● | The competitive industry of mineral exploration;

| ● | The title and rights in the Company’s mineral properties;

| ● | Environmental hazards;

| ● | The possible dilution of the Company’s common stock from additional financing activities;

| ● | Metallurgical and other processing problems;

| ● | Unexpected geological formations;

| ● | Global economic and political conditions;

| ● | Staffing in remote locations;

| ● | Changes in product costing;

| ● | Inflation on operational costs and profitability;

| ● | Competitive technology positions and operating interruptions (including, but not limited to, labor disputes, leaks, fires, flooding, landslides, power outages, explosions, unscheduled downtime, transportation interruptions, war and terrorist activities);

| ● | Global pandemics, natural disasters, or civil unrest;

| ● | Mexican labor and other issues regarding safety and organized control over our properties;

| ● | The positions and associated outcomes of Mexican and other taxing authorities;

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| ● | Cybersecurity and business disruptions;

| ● | Ineffective use of cash and cash equivalents, including proceeds from stock offerings;

| ● | Potential conflicts of interest with the Company’s management;

| ● | Mining exploration, development, and production not being economically viable;

| ● | Mineral reserve estimates, including those prepared by “Qualified Persons” (as defined by SEC Regulation S-K 1300), are not guarantees of the volume or grade of ore that will ultimately be recovered;

| ● | Processing and selling ore from new suppliers and internal sources not being economically viable;

| ● | More risk associated with non-domestic supply of antimony ore; and

| ● | Fluctuations in the Company’s common stock.

This list is not an exhaustive list of the factors that may affect the Company’s forward-looking statements. Some of the important risks and uncertainties that could affect forward-looking statements are described further under the sections titled “Risk Factors,” “Description of Business” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Quarterly Report. If one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those anticipated, believed, estimated or expected. The Company cautions readers not to place undue reliance on any such forward-looking statements, which speak only as of the date made. United States Antimony Corporation disclaims any obligation subsequently to revise any forward-looking statements to reflect events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events, except as required by law. The Company advises readers to carefully review this Form 10-Q, the exhibits hereto, and the reports and documents incorporated by reference herein and filed with the Securities and Exchange Commission (the “SEC”).

You should read this report with the understanding that our actual future results, levels of activity, performance and events and circumstances may be materially different from what we expect and from our historical results.

This report contains estimates, projections and other information concerning our industry, our business and the markets for our products. We obtained the industry, market and similar data set forth in this report from our own internal estimates and research and from industry research, publications, surveys and studies conducted by third parties, including governmental agencies. Information that is based on estimates, forecasts, projections, market research or similar methodologies is inherently subject to uncertainties, and actual events or circumstances may differ materially from events and circumstances that are assumed in this information. While we believe that the data we use from third parties is reliable, we have not separately verified this data. You are cautioned not to give undue weight to any such information, projections and estimates. As a result of a number of known and unknown risks and uncertainties, our actual results or performance may be materially different from those expressed or implied by forward-looking statements.

As used in this Quarterly Report, the terms “we,” “us,” “our,” “United States Antimony Corporation,”, “US Antimony,” “USAC,” and the “Company”, mean United States Antimony Corporation, unless otherwise indicated. All dollar amounts in this Quarterly Report are expressed in U.S. dollars, unless otherwise indicated.

Management’s Discussion and Analysis is intended to be read in conjunction with the Company’s consolidated financial statements and the integral notes (“Notes”) thereto included in the Company’s Annual Report on Form 10-K/A for the fiscal year ended December 31, 2024.

DESCRIPTION OF BUSINESS

History

United States Antimony Corporation’s principal business is the production and sale of antimony, precious metals, and zeolite products. The Company was incorporated in Montana in January 1970 to mine and produce antimony products. In December 1983, the Company suspended its antimony mining operations in the U.S. but continued to produce antimony products using foreign sources of antimony ore. In April 1998, the Company formed US Antimony de Mexico, S.A. de C.V. (“USAMSA”) to produce antimony products in Mexico, and, in August 2005, the Company formed Antimonio de Mexico, S.A. de C.V. (“ADM”) to explore and develop antimony and precious metal deposits in Mexico. The Company formed Bear River Zeolite Company (“BRZ”) in 2000 for the purpose of mining and producing zeolite products in Idaho. Beginning in 2024, the Company began acquiring mining claims and leases located in Alaska, Montana and Ontario, Canada, which necessitated forming three entities related to the Alaska mining claims, Great Land Minerals, LLC, Denali Minerals, LLC, and Alaska Antimony LLC, and one entity related to the Ontario mining claims and leases, UAMY Cobalt Corporation. We invested in these mining claims and leases in an effort to reduce the cost of third party antimony ore purchases. Currently, no active operations are being conducted, nor is any revenue being generated, from the Company’s business components located in Los Juarez,

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Mexico (our ADM subsidiary), Ontario, Canada, Alaska, and the mining claims in Thompson Falls, Montana. In September 2025, the Company obtained government permits to begin exploration of its mining claims in Alaska and commenced limited surface mining at two of these sites before the mining season ended due to weather constraints. In October 2025, the Company completed the purchase of additional property in Fairbanks, Alaska that will be used for operating activities, including ore separation and storage, as well as an office for its staff.

In May 2012, our shares of common stock started trading on the NYSE MKT exchange (now NYSE AMERICAN) under the symbol UAMY. On July 1, 2025, the Company’s common stock also began trading on a new stock exchange, the NYSE Texas. The Company continues to maintain its primary listing on the NYSE American Stock Exchange and trades with the same “UAMY” ticker symbol on both exchanges.

In June 2025, the Company acquired property located in the Sudbury District of Ontario, Canada, which included 50 single-cell tungsten mining claims (the Fostung Properties). We have completed fieldwork but not yet extracted any minerals from the Fostung Properties and we have not previously prepared a technical report summary making a determination on the property’s mineral resources or mineral reserves. However, the Company has recently retained a qualified third-party expert who is in the process of preparing a technical reserve report for the Fostung Properties.

On August 28, 2025, the Company completed the conversion of its state of incorporation from the State of Montana to the State of Texas (the “Texas Reincorporation”) by means of a Plan of Conversion, effective August 13, 2025. The Texas Reincorporation, including the principal terms of the Plan of Conversion, was submitted to a vote of, and approved by, the Company’s stockholders at the Company’s 2025 Annual Meeting of Stockholders held on July 31, 2025. Upon completing the Texas Reincorporation, the rights of the Company’s shareholders previously governed by the Montana Business Corporation Act, as amended, and the Company’s Articles of Incorporation and Bylaws in effect prior to the Texas Reincorporation, are now governed by the Texas Business Organizations Code and the Certificate and Bylaws filed and adopted by the Company under Texas law. The Texas Reincorporation did not result in any change in business, jobs, management, properties, location of any of our offices or facilities, number of employees, obligations, assets, liabilities or net worth. Also, the Company continues to maintain its corporate headquarters in Texas and no interruption in the trading of its common stock occurred.

In September 2025, the Company secured a five-year, sole-source Indefinite Delivery, Indefinite Quantity (IDIQ) contract with the U.S. Defense Logistics Agency (DLA) Strategic Materials, which is responsible for managing the National Defense Stockpile (NDS). The contract, with a maximum value of $245 million, is for the supply of antimony metal ingots (99.65% purity) to replenish the NDS through September 2030. Pricing is determined at the time each delivery order is placed. At the end of September 2025, the Company announced it had received the first delivery order under its contract with the DLA. This initial order for the purchase of 315,000 pounds of antimony metal ingots is valued at approximately $10 million. During the three and nine months ended September 30, 2025 and to-date, no revenue has been recognized related to this contract.

The Company has two reportable segments: antimony and zeolite.

Antimony Segment

Our antimony segment consists of:

| ● | Our facility located in the Burns Mining District of Sanders County in Montana that processes ore primarily into antimony oxide, antimony metal ingots, antimony trisulfide, and precious metals, and

| ● | Two facilities in our USAMSA subsidiary located in Mexico, one being a rock crushing mill and the other a smelter, that process ore primarily into antimony metal ingots, a lower grade of antimony oxide, and precious metals.

Antimony is a mineral that is included in many products that are used every day, both by the military and by industrial customers. USAC can provide this mineral in a form that can be used in various products.

Antimony is used in many products as a fire-retardant and a primer and is on the Critical Minerals List of the U.S. Government. Antimony mined from the ground, which is called antimony ore or ore, is typically not salable as a finished product primarily due to impurities in the ore, the ore size not being compatible with its intended use, and the percentage of antimony contained in the ore being too low. We process ore to remove impurities, refine the size, and increase the percentage of antimony contained in the ore to approximately 71.4% to make the finished product called antimony trisulfide, to approximately 83% to make the finished product called antimony oxide, and to approximately 99.65% to make the finished product called antimony metal ingots. Antimony trisulfide, oxide, and metal can be sold

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as finished products to companies in many industries as well as government agencies. Antimony oxide is used to form a flame-retardant system for plastics, rubber, fiberglass, textile goods, paints, coatings, and paper, as a color fastener in paint, and as a phosphorescent agent in fluorescent light bulbs. Antimony metal ingots are used in bearings, storage batteries, and ordnance. Antimony trisulfide is used as a primer in ammunition. The ore we purchase for our facility located in Montana contains antimony, gold, and silver. Our Montana facility processes this ore and typically sells the gold and silver to the company who sold us this ore, which represents all our precious metals sales, and sells the antimony to other companies in various industries. Our Mexico facilities have been processing ore primarily into antimony metal ingots.

We estimate (but have not independently confirmed) that our present share of the domestic and international markets for antimony oxide products is approximately 4% and less than 1%, respectively. We believe we are competitive due to the following:

| ● | We are the only U.S. domestic operating, permitted processor of antimony products.

| ● | We can process ore quickly and have minimal shipping time to domestic customers.

| ● | We have a reputation for quality products delivered on a timely basis.

| ● | Our smelter in Coahuila, Mexico is the largest and only current operating smelter for the processing of antimony products in Mexico.

| ● | We are a fully vertically integrated operation that includes mining, processing and selling antimony products. We believe there are no other companies in the world, outside of Russia or China, that can make that claim.

Zeolite Segment

Our zeolite segment includes our vertically integrated Bear River Zeolite (“BRZ”) facility located in Preston, Idaho that mines, processes, and sells zeolite. Zeolite is a mineral that is included in many products that are used every day. BRZ can provide these minerals in a form that can be used in these products. Our zeolite has been used for many purposes including water filtration, sewage treatment, nuclear waste and other environmental cleanup, odor control, gas separation, animal nutrition, soil amendment and fertilizer, and other miscellaneous applications.

On July 24, 2025, the Company published a technical report summary on its zeolite mineral deposit located in Preston, Idaho. This Technical Report Summary, dated July 2, 2025 (the “TRS”), on the Bear River Zeolite Project was prepared in accordance with the mining property disclosure rules specified in subpart 1300 of Regulation S-K. The full text of the TRS is an exhibit to the Form 8-K filed by the Company on July 25, 2025.

BRZ has a lease with Zeolite, LLC that entitles BRZ to surface mine and process zeolite on the property in Preston, Idaho, in exchange for an annual payment and a royalty payment, which is based on the amount of zeolite shipped from the leased property (“BRZ Lease”). The BRZ Lease was recently extended and now ends on December 31, 2034. In addition, BRZ can surface mine and process zeolite on property owned by the U.S. Bureau of Land Management that is located adjacent to the Company’s Preston, Idaho property after obtaining required permits.

“Zeolite” refers to a group of industrial minerals that consist of hydrated aluminosilicates that hold cations such as calcium, sodium, ammonium, various heavy metals, and potassium in their crystal lattice. Water is loosely held in cavities in the lattice. BRZ zeolite is regarded as one of the best zeolites in the world due to its high cation exchange capacity (CEC) of approximately 180-220 meq/100 gr. (which predicts plant nutrient availability and retention in soil), its hardness and high clinoptilolite content (which is an effective barrier to prevent problematic radionuclide movement), its absence of clay minerals, and its low sodium content. Our zeolite has been used in:

| ☐ | Soil Amendment and Fertilizer. Zeolite has been successfully used to fertilize golf courses, sports fields, parks and common areas, and high value agricultural crops.

| ☐ | Water Filtration. Zeolite is used for particulate, heavy metal and ammonium removal in swimming pools, municipal water systems, industrial water discharge streams, fisheries, fish farms, and aquariums.

| ☐ | Sewage Treatment. Zeolite is used in sewage treatment plants to remove nitrogen and as a carrier for microorganisms.

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| ☐ | Nuclear Waste and Other Environmental Cleanup. Zeolite has shown a strong ability to selectively remove strontium, cesium, radium, uranium, and various other radioactive isotopes from solution. Zeolite can also be used for the cleanup of soluble metals such as mercury, chromium, copper, lead, zinc, arsenic, molybdenum, nickel, cobalt, antimony, calcium, silver and uranium.

| ☐ | Odor Control. A major cause of odor around cattle, hog, and poultry feed lots is the generation of the ammonium in urea and manure. The ability of zeolite to absorb ammonium prevents the formation of ammonia gas, which disperses the odor.

| ☐ | Gas Separation. Zeolite has been used for some time to separate gases, to re-oxygenate downstream water from sewage plants, smelters, pulp and paper plants, and fishponds and tanks, and to remove carbon dioxide, sulfur dioxide and hydrogen sulfide from methane generators as organic waste, sanitary landfills, municipal sewage systems, animal waste treatment facilities, and is excellent in pressure swing apparatuses.

| ☐ | Animal Nutrition. According to third-party research, feeding up to 2% zeolite increases growth rates, decreases conversion rates, and prevents scours.

| ☐ | Miscellaneous Uses. Other uses include catalysts, petroleum refining, concrete, solar energy and heat exchange, desiccants, pellet binding, horse and kitty litter, floor cleaner, traction control, ammonia removal from mining waste, and carriers for insecticides, pesticides and herbicides.

SELECTED FINANCIAL DATA.

Operational and Financial Performance of Operations by Segment:

Antimony

Financial and operational performance of antimony for the three months ended September 30, 2025 and 2024 was as follows:

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | ​ | ​ | ​ | ​ |
Antimony |  | 2025 |  | 2024 |  | $ Change |  | % Change |
Revenue (a) | ​ | $ | 8,030,005 | ​ | $ | 1,489,798 | ​ | $ | 6,540,207 |  | 439 | %
Gross profit (a) | ​ | $ | 2,189,229 | ​ | $ | 281,207 | ​ | $ | 1,908,022 |  | 679 | %
Pounds of antimony sold (a) | ​ |  | 279,607 | ​ |  | 250,047 | ​ |  | 29,560 |  | 12 | %
Average sales price per pound | ​ | $ | 28.72 | ​ | $ | 5.96 | ​ | $ | 22.76 |  | 382 | %
Average cost per pound | ​ | $ | 20.89 | ​ | $ | 4.84 | ​ | $ | 16.05 |  | 332 | %
Average gross profit per pound | ​ | $ | 7.83 | ​ | $ | 1.12 | ​ | $ | 6.71 |  | 599 | %

a. | Revenue from sales of gold and silver totaled $nil and $399,433 for the three months ended September 30, 2025 and 2024, respectively, which are excluded from Revenue and Gross profit in the table above but included in the antimony segment. Pounds of antimony sold in the table above exclude sales related to gold and silver for both periods presented.

Financial and operational performance of antimony for the nine months ended September 30, 2025 and 2024 was as follows:

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended September 30, | ​ | ​ | ​ | ​ | ​ |
Antimony |  | 2025 |  | 2024 |  | $ Change |  | % Change |
Revenue (b) | ​ | $ | 23,592,695 | ​ | $ | 6,622,835 | ​ | $ | 16,969,860 |  | 256 | %
Gross profit (b) | ​ | $ | 7,493,928 | ​ | $ | 2,428,783 | ​ | $ | 5,065,145 |  | 209 | %
Pounds of antimony sold (b) | ​ |  | 982,559 | ​ |  | 1,134,862 | ​ |  | (152,303) |  | (13) | %
Average sales price per pound | ​ | $ | 24.01 | ​ | $ | 5.84 | ​ | $ | 18.17 |  | 311 | %
Average cost per pound | ​ | $ | 16.38 | ​ | $ | 3.70 | ​ | $ | 12.68 |  | 343 | %
Average gross profit per pound | ​ | $ | 7.63 | ​ | $ | 2.14 | ​ | $ | 5.49 |  | 257 | %

b. | Revenue from sales of gold and silver totaled negative $(20,539) and $404,049 for the nine months ended September 30, 2025 and 2024, respectively, which are excluded from Revenue and Gross profit in the table above but included in the antimony segment. Pounds of antimony sold in the table above exclude sales related to gold and silver for both periods presented.

For the three and nine months ended September 30, 2025, antimony revenue increased $6,540,207, or 439%, and $16,969,860, or 256%, respectively, as compared to the corresponding periods in the prior year. This growth was primarily driven by continued heightened

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demand for antimony, which resulted in the average sales price per pound increasing for both the three and nine-month periods. During the third quarter of 2025, antimony revenue growth was also positively impacted by 12% growth in sales volume. For the nine months ended September 30, 2025, the positive impact of a 311% increase in average sales price per pound was partially offset by a 13% decline in sales volume attributable mostly to a shortage of available workforce which has since been rectified.

Gross profit increased $1,908,022, or 679%, and $5,065,145, or 209%, for the three and nine months ended September 30, 2025, respectively, as compared to the three and nine months ended September 30, 2024. These increases were primarily attributable to higher average sales prices per pound, driven by continued demand, coupled with favorable ore costs from earlier purchases made during the first half of 2025. This positive impact was partially offset by an increasing percentage of market prices charged by suppliers.

Zeolite

Financial and operational performance of zeolite for the three months ended September 30, 2025 and 2024 was as follows:

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | ​ | ​ | ​ | ​ |
Zeolite |  | 2025 |  | 2024 |  | $ Change |  | % Change |
Revenue | ​ | $ | 671,946 | ​ | $ | 682,947 | ​ | $ | (11,001) |  | (2) | %
Gross profit (loss) | ​ | $ | (25,813) | ​ | $ | (208,392) | ​ | $ | 182,579 |  | 88 | %
Tons of zeolite sold | ​ |  | 2,491 | ​ |  | 2,603 | ​ |  | (112) |  | (4) | %
Average sales price per ton | ​ | $ | 270 | ​ | $ | 262 | ​ | $ | 8 |  | 3 | %
Average cost per ton | ​ | $ | 280 | ​ | $ | 342 | ​ | $ | (62) |  | (18) | %
Average gross profit (loss) per ton | ​ | $ | (10) | ​ | $ | (80) | ​ | $ | 70 |  | 88 | %

​

Financial and operational performance of zeolite for the nine months ended September 30, 2025 and 2024 was as follows:

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended September 30, | ​ |  | ​ | ​ |  |
Zeolite |  | 2025 |  | 2024 |  | $ Change |  | % Change |
Revenue | ​ | $ | 2,654,923 | ​ | $ | 2,280,338 | ​ | $ | 374,585 |  | 16 | %
Gross profit (loss) | ​ | $ | 275,720 | ​ | $ | (450,556) | ​ | $ | 726,276 |  | 161 | %
Tons of zeolite sold | ​ |  | 9,377 | ​ |  | 8,611 | ​ |  | 766 |  | 9 | %
Average sales price per ton | ​ | $ | 283 | ​ | $ | 265 | ​ | $ | 18 |  | 7 | %
Average cost per ton | ​ | $ | 254 | ​ | $ | 317 | ​ | $ | (63) |  | (20) | %
Average gross profit (loss) per ton | ​ | $ | 29 | ​ | $ | (52) | ​ | $ | 81 |  | 156 | %

​

For the nine months ended September 30, 2025, Zeolite revenue increased $374,585, or 16%, as compared to the corresponding prior year period. This increase was largely a result of higher sales volume, stemming from enhanced customer relationships, improved supply reliability, and broader customer reach. In contrast, Zeolite revenue in the third quarter of 2025 experienced a decline of $11,001, or 2%, when compared to the prior year’s third quarter. This quarterly decrease was primarily due to the 4% decrease in tons of Zeolite sold, partially offset by a 3% increase in the average sales price per ton.

For the nine months ended September 30, 2025, gross profit was $275,720 compared to a negative gross margin of $(450,556) during the corresponding period in 2024. This improvement in gross profit was largely due to both sales volume growth and higher average sales prices, coupled with a decrease in maintenance and related costs. During the first three quarters of 2024, our BRZ facility incurred substantial maintenance and related costs to repair older operating equipment due to historically poor maintenance practices. In the third quarter of 2025, Zeolite’s gross profit improved by $182,579 from a negative gross margin of $(208,392) in the prior year third quarter to a negative gross margin of $(25,813). Gross profit in the third quarter of 2025 benefited from lower maintenance costs coupled with a higher average sales price per ton.

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Condensed Consolidated Statements of Operations Information:

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
Revenues | ​ | $ | 8,701,951 | ​ | $ | 2,572,178 | ​ | $ | 26,227,079 | ​ | $ | 9,307,222
Costs of revenues | ​ |  | 6,688,509 | ​ |  | 2,148,349 | ​ |  | 19,004,362 | ​ |  | 7,043,685
Gross profit | ​ |  | 2,013,442 | ​ |  | 423,829 | ​ |  | 7,222,717 | ​ |  | 2,263,537
Total operating expenses | ​ |  | 6,930,624 | ​ |  | 1,314,850 | ​ |  | 11,761,900 | ​ |  | 3,569,004
Loss from operations | ​ |  | (4,917,182) | ​ |  | (891,021) | ​ |  | (4,539,183) | ​ |  | (1,305,467)
Total other income, net | ​ |  | 136,482 | ​ |  | 163,512 | ​ |  | 486,562 | ​ |  | 457,982
Income tax expense | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Net loss | ​ | $ | (4,780,700) | ​ | $ | (727,509) | ​ | $ | (4,052,621) | ​ | $ | (847,485)

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Capital Resources and Liquidity:

​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September |  | December
Working Capital | ​ | 30, 2025 | ​ | 31, 2024
Current assets | ​ | $ | 31,797,939 | ​ | $ | 20,678,569
Current liabilities | ​ |  | (6,261,389) | ​ |  | (4,006,389)
Working capital | ​ | $ | 25,536,550 | ​ | $ | 16,672,180

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​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30,
Cash Flow Information |  | 2025 |  | 2024
Net cash (used in) provided by operating activities | ​ | $ | (6,220,686) | ​ | $ | 1,042,162
Net cash (used in) provided by investing activities | ​ |  | (35,995,481) | ​ |  | 141,708
Net cash provided by (used in) financing activities | ​ |  | 42,415,350 | ​ |  | (71,139)
Net increase in cash | ​ | $ | 199,183 | ​ | $ | 1,112,731

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Net cash used in operating activities was $6,220,686 for the nine months ended September 30, 2025, compared to net cash provided by operating activities of $1,042,162 for the same period in 2024. The significant net use of cash in 2025 primarily reflected significant working capital investments made during the nine-month period. The Company experienced a $7,167,437 increase in inventory, driven by substantially higher levels of antimony inventory on hand, as illustrated in the inventory chart below. In addition, prepaid expenses and other current assets increased by $1,716,295, and accounts receivable rose by $798,413. The increase in accounts receivable reflected higher sales levels. These outflows were partially offset by a $2,672,335 increase in accounts payable, largely due to an increase in antimony purchases and an increasing percentage of market prices charged by suppliers for antimony.

Inventory by segment as of the date indicated was as follows:

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2023 |  | September 30, 2024 |  | December 31, 2024 |  | September 30, 2025
Antimony inventory | ​ | $ | 881,063 | ​ | $ | 443,214 | ​ | $ | 744,550 | ​ | $ | 7,992,140
Zeolite inventory | ​ |  | 505,046 | ​ |  | 555,057 | ​ |  | 501,174 | ​ |  | 421,021
Total inventories | ​ | $ | 1,386,109 | ​ | $ | 998,271 | ​ | $ | 1,245,724 | ​ | $ | 8,413,161

​

The increase in prepaid expenses and other currents assets was primarily due to payments made for inventory shipments that were pending receipt at September 30, 2025. This resulted in an increase in “prepaid expenses and other current assets” of approximately $1,469,000 from December 31, 2024 to September 30, 2025. Also, prepaid insurance increased by approximately $229,000 from December 31, 2024 to September 30, 2025, due to insurance renewal payments made during the second quarter of 2025 to continue coverage for the next policy year.

Net cash used in investing activities was $35,995,481 for the nine months ended September 30, 2025 as compared to net cash provided by investing activities of $141,708 for the nine months ended September 30, 2024. Investing activities in the first nine months of 2025 were comprised of $19,934,953 for purchases of U.S. Treasury Strips and capital expenditures totaling $16,069,244. These capital expenditures included $5,025,120 for the purchase of the Fostung Properties, a mining property consisting of 50 single-cell mining claims located in the Sudbury District of Ontario, Canada and approximately $9 million of construction in progress expenditures primarily associated with the expansion of our existing smelting operations located in Thompson Falls, Montana. See Note 8 of the Notes to Condensed Consolidated Financial Statements in this Quarterly Report for further information.

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Net cash provided by financing activities was $42,415,350 for the nine months ended September 30, 2025 as compared to $71,139 of net cash used in financing activities for the corresponding period in the prior year. Significant financing activities in the first nine months of 2025 included $38,440,596 of net proceeds received from the sale of common stock in “at the market offerings” and one direct offering with an institutional investor, and $4,427,756 of proceeds received from the exercise of pre-existing common stock warrants.

In October 2025, the Company received approximately $66 million of additional net proceeds pursuant to “at the market offerings” and two direct offerings to certain institutional investors.

The Company incurred a net loss of $4.1 million for the nine months ended September 30, 2025. Included in this loss was $5.2 million of non-cash expenses, which consisted primarily of $4.7 million of non-cash share-based compensation expense and $0.8 million of non-cash depreciation and amortization expense, partly offset by $0.2 million of net non-cash lease income.

The Company has entered into a Letter of Intent to acquire an existing custom precious metals mill and flotation facility to enhance its processing capabilities. Separately, given the limited local availability of residential housing options in Thompson Falls, Montana, the Company has entered into a contract pending resolution of certain closing contingencies to purchase an existing housing development in the local area to ensure adequate housing levels are available for new employees who will work in the new expansion facility of our existing smelting operations.

Our mission is to service our employees, customers, and vendors well and grow our business profitably both organically and through strategic acquisitions and partnerships to increase shareholder value. The Company is focused on generating cash flow to fund its mission. One method of generating cash is through the sale or issuance of common stock, warrants, debt, and other investment vehicles, which the Company has been successful at executing in the past. However, our ability to access capital or raise funds when needed is not assured and, if capital is not available when, and in the amounts and terms needed, or if capital is not available at all, the Company could be required to significantly curtail its operations, modify existing strategic plans, and/or dispose of certain operations or assets, which could materially harm our business, prospects, financial condition, and operating results.

The Company secured a $5,000,000 LOC facility with a national bank in April 2025, which bears interest at one percent above the base commercial rate. In September 2025, the LOC was increased to $10,000,000. The Company’s U.S. Treasury Strips serve as collateral for this LOC. The Company could generate funds or working capital by drawing on its LOC as it had no outstanding borrowings on the LOC at September 30, 2025.

The Company could also in the future receive funds from the U.S. Government for initiatives related to facility expansion and mining exploration and development. However, there is no assurance that U.S. Government funding will ultimately be accessible to the Company.

In addition, the Company continues to review each segment’s operational and financial results for opportunities to improve cash flow and to make informed decisions that benefit the Company overall.

As of September 30, 2025, the Company had cash and cash equivalents of $18,338,679. We intend to fund our cash requirements with our cash and cash equivalents, cash generated from our operations, and capital raised from various investment vehicles and methods and believe cash from these sources are sufficient to cover our requirements for the next twelve months. We may use cash to acquire businesses. The nature of these investments and transactions, however, makes it difficult to predict the amount and timing of such cash requirements.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Not applicable.

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ITEM 4. CONTROLS AND PROCEDURES

Conclusions of Management Regarding Effectiveness of Disclosure Controls and Procedures

At the end of the period covered by this Quarterly Report on Form 10-Q, an evaluation was carried out under the supervision and with the participation of the Company’s management, including the Principal Executive Officer (“PEO”) and Principal Financial Officer (“PFO”), of the effectiveness of the design and operations of the Company’s disclosure controls and procedures (as defined in Rule 13a – 15(e) and Rule 15d – 15(e) under the Exchange Act). Based on that evaluation, the PEO and the PFO have concluded that our disclosure controls and procedures were not effective in ensuring that: (i) information required to be disclosed by the Company in reports that it files or submits to the SEC under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in applicable rules and forms, and (ii) material information required to be disclosed in our reports filed under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow for accurate and timely decisions regarding required disclosure.

Management of the Company believes that these material weaknesses are more so due to the small size of the Company’s accounting staff. To continue to address this matter, in 2025, the Company has hired employees to lead Sarbanes-Oxley compliance, SEC and other reporting, accounts payable, finance and accounting in Mexico, and information technology. The Company is reviewing additional plans to strengthen its internal controls. These plans are ongoing and include: (i) hiring a third party firm to assist with the implementation of accounting software for improved internal controls, (ii) implementing controls to mitigate segregation of duties issues, (iii) automating manual processes to improve the effectiveness and efficiency of internal controls, and (iv) designing certain entity-level controls for a more effective control environment.

Changes in Internal Control over Financial Reporting

There have been no changes during the quarter ended September 30, 2025 in the Company’s internal controls over financial reporting that have materially affected, or are reasonably likely to materially affect, internal controls over financial reporting.

PART II - OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.

United States Antimony Corporation is not a party to any material legal proceedings. No director, officer or affiliate of United States Antimony Corporation and no owner of record or beneficial owner of more than 5% of the Company’s securities or any associate of any such director, officer or security holder is a party adverse to United States Antimony Corporation or has a material interest adverse to United States Antimony Corporation in reference to pending litigation.

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ITEM 1A. RISK FACTORS.

There have been no material changes from the risk factors previously disclosed in the Company’s Form 10-K/A for the year ended December 31, 2024, which was filed with the SEC on April 18, 2025, except as described below.

Changes in United States trade policies, including the imposition of tariffs and retaliatory tariffs, may adversely impact our business, financial condition, and results of operations. Potential tariffs and trade restrictions may, among other things, cause the prices of ore and our product upon import into the US to increase, which could reduce demand for such products given the increased cost, and have a material adverse impact on our revenues, financial condition, and results of operations. In addition, to the extent changes in the political environment have a negative impact on us or on the markets in which we operate our business, our results of operations and financial condition could be materially and adversely impacted in the future.

Mining exploration, development, and production may not be economically viable. On July 24, 2025, the Company published its technical report summary (“TRS”) in accordance with the mining property disclosure rules specified in subpart 1300 of Regulation S-K (“SK 1300”) on its zeolite mineral deposit located in Preston, Idaho. This TRS is an exhibit to the Form 8-K filed by the Company on July 25, 2025. However, the Company has not completed a TRS for any of its other properties. Until a TRS is completed for the Company’s properties in accordance with SK 1300 or Canadian National Instrument 43-101 (“NI 43-101”), there can be no guarantee or assurance of the contents, quantity, or grade of mineral resources or reserves at the location. Any indication of the contents, quantity, or grade of minerals at these properties can be materially inaccurate. See “Cautionary Note Concerning Disclosure of Mineral Resources,” above. In addition, we have not established proven or probable reserves, as defined under S-K 1300 or NI 43-101, through the completion of a feasibility study for these mining claims and leases. As a result, there is increased uncertainty and risk that may

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result in economic and technical failure which may materially adversely impact our future profitability, financial condition, and results of operations.

Processing and selling ore from new suppliers and internal sources may not be economically viable. Ore sourced from new suppliers as well as ore sourced from our mine sites may not be able to be processed profitably, which could have a material adverse effect on our results of operations and financial condition.

Additional risk associated with non-domestic supply of antimony ore. The Company purchases ore from non-domestic suppliers, each purchase of which is typically for a material amount. There are many risks associated with purchasing ore from non-domestic suppliers including, but not limited to, shipping disruptions, such as extended delays at intermediary ports. Due diligence is performed on each supplier, however, there can be no assurance that the information obtained is credible or accurate. In addition, there is no guarantee that the suppliers’ product will be delivered to the Company, even after payment is made by the Company. Also, there can be no assurance that the product content, quantity, or grade will be as expected. As a result, there is increased uncertainty and risk related to purchasing product from non-domestic suppliers that could have a material adverse impact on our future profitability, financial condition, and results of operations.

The Company’s held-to-maturity investment securities and recent equity investment are subject to potential devaluation, which could negatively impact our financial condition and results of operations. The Company maintains certain investments in held-to-maturity debt securities and equity securities that are carried at amortized cost or fair value, as applicable, in accordance with U.S. GAAP. Changes in market interest rates, credit quality of the issuers, or general economic conditions could adversely affect the fair value of these investments. Although held-to-maturity securities are not required to be adjusted for temporary market fluctuations, a sustained decline in value or evidence of credit deterioration may require the recognition of an impairment loss. Similarly, the fair value of our equity investment may fluctuate significantly due to market volatility or other factors beyond our control. Any such declines in the value of our investment portfolio could adversely affect the Company’s financial position, results of operations, or liquidity.

The Company’s supply contracts, including its sole-source contract with the DLA for antimony metal ingots, expose it to a variety of risks that could adversely impact performance and financial results. These risks include non-performance by the Company or its suppliers; cost increases for materials, energy, transportation, and labor; and volatility in market pricing of antimony that may affect profitability under fixed-price or long-term contracts. The Company may also experience increased working capital requirements associated with inventory purchases, production timing, and customer payment terms. Operational challenges such as equipment downtime, supply chain disruptions, or securing adequate quantities of compliant materials could delay deliveries or increase costs. Additionally, the Company is subject to regulatory, compliance, and quality control requirements that may impose additional costs or potential penalties if not met. Broader geopolitical and national security factors, including trade restrictions, sanctions, or changes in government procurement policies, could further impact the Company’s ability to perform under existing or future contracts. Any combination of these factors could materially and adversely affect the Company’s financial condition, liquidity, and results of operations.

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ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.

Not applicable.

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ITEM 3. DEFAULTS UPON SENIOR SECURITIES.

None.

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ITEM 4. MINE SAFETY DISCLOSURES.

The information concerning mine safety violations or other regulatory matters required by Section 1503 (a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K is included in Exhibit 95 to this report.

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ITEM 5. OTHER INFORMATION.

N o n e.

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ITEM 6. EXHIBITS.

Exhibit No. |  | Description
3.1 | ​ | Third Restated Articles of Incorporation (incorporated by reference as Exhibit 3.1 to the Company’s current Report on Form 8-K filed with the SEC on August 5, 2024).
3.2 | ​ | First Restated Bylaws (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed with the SEC on May 20, 2024).
10.1 * | ​ | Contract between the Company and the U.S. Defense Logistics Agency (DLA) Strategic Materials, dated September 22, 2025 (Portions of this exhibit have been omitted pursuant to Item 601(b)(10) of Regulation S-K).
31.1 * | ​ | Rule 15d-14(a) Certification by Principal Executive Officer.
31.2 * | ​ | Rule 15d-14(a) Certification by Principal Financial Officer.
32.1 * | ​ | Section 1350 Certification of Principal Executive Officer and Principal Financial Officer.
95 * | ​ | Mine Safety Disclosure.
96.1 | ​ | Technical Report Summary per SEC S-K 1300 - Bear River Zeolite (incorporated by reference to Exhibit 96.1 to the Company’s Current Report on Form 8-K filed with the SEC on July 25, 2025)
101.INS | ​ | Inline XBRL Instance Document.
101.SCH | ​ | Inline XBRL Taxonomy Extension Schema Document.
101.CAL | ​ | Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF | ​ | Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB | ​ | Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE | ​ | Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104 | ​ | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).

* | Filed herewith.

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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.

​ |  | UNITED STATES ANTIMONY CORPORATION
​ | ​ | ​
Date: November 12, 2025 | ​ | By: | /s/ Gary C. Evans
​ | ​ | ​ | Gary C. Evans
​ | ​ | ​ | Chairman of the Board and CEO
​ | ​ | ​ | (principal executive officer)
​ | ​ | ​
Date: November 12, 2025 | ​ | By: | /s/ Richard R. Isaak
​ | ​ | ​ | Richard R. Isaak
​ | ​ | ​ | SVP and Chief Financial Officer
​ | ​ | ​ | (principal financial officer)

​

​

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