American Critical Minerals extends warrant exercise incentive program

American Critical Minerals Extends Early Warrant Exercise Incentive Program

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VANCOUVER, BC / ACCESS Newswire / June 18, 2026 / American Critical Minerals Corp. ("American Critical Minerals" or the "Company") (CSE:KCLI)(OTCQB:APCOF)(Frankfurt:2P3) is pleased to announce that it has extended the deadline for completion of its warrant exercise incentive program (the "Program"). The program is intended to encourage the early exercise of up to 10,304,000 warrants (the "Warrants") previously issued in connection with private placements that closed on June 28, 2023 and August 23, 2024 and which are currently exercisable at a price of $0.25 per share and expire on June 28, 2026 and August 23, 2026, respectively. To address ongoing interest and to allow additional time for the completion of documentation, the Company has elected to extend the deadline for the Program until June 28, 2026 (the "Program End Date").

Under the Program, the Company is offering an inducement to each holder of the Warrants that exercises on or before the Program End Date. Holders exercising Warrants on or before the Program End Date will be entitled to receive one additional warrant (the "New Warrant") for each share subscribed for. Each New Warrant will be exercisable at a price of $0.35 until June 22, 2029. The proceeds from the Program will strengthen the Company's treasury and will be used for working capital purposes and the advancement of the Company's Green River Project.

The New Warrants, if issued, and any shares issuable on exercise thereof, will be subject to a statutory hold period of four months and one day from the date of issuance of the New Warrants. Warrants that remain unexercised following the Program End Date will continue to be exercisable on their terms as those terms were in effect immediately prior to the Program End Date, including with respect to the pricing thereof, and no New Warrants will thereafter be issuable on exercise.

Holders of the Warrants are encouraged to contact the Company to coordinate exercise prior to the Program End Date.

This press release is not an offer to sell or the solicitation of an offer to buy the securities in the United States or in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to qualification or registration under the securities laws of such jurisdiction. The securities being offered have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and such securities may not be offered or sold within the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from U.S. registration requirements and applicable U.S. state securities laws.

On behalf of the Board of Directors

Dean Pekeski, President & CEO

About American Critical Minerals' Green River Potash and Lithium Project

The Green River Project is situated within Utah's highly productive Paradox Basin, located 20 miles northwest of Moab, Utah. It has significant logistical advantages including close proximity to major rail hubs, airport, roads, water, towns, and labour markets. It also benefits from close proximity to the agricultural and industrial heartland of America and numerous potential end-users for its products.

The history of oil and gas production across the Paradox Basin provides geologic data from historic wells across the Project, and the wider Basin, validating and de-risking the potential for high grade potash and large amounts of contained lithium. Wells in and around the project reported lithium up to 500 ppm, bromine up to 6,100 ppm and boron up to 1,260 ppm (Gilbride & Santos, 2012). This data is reinforced by nearby potash production and the advanced stage of neighbouring lithium projects. The Paradox Basin is believed to be one of the biggest sources of lithium brines in the United States. (Source: AnsonFastmarketsPresentation- https://wcsecure.weblink.com.au/pdf/ASN/02823465.pdf).

The Company has disclosed targets for further exploration at the Green River Project consisting of 500 million to 950 million tonnes of sylvinite (the most important source for the production of potash in North America) grading from 12% to 18% potassium oxide based on elog (eK2O=19% to 29% potassium chloride based on elog (eKCl)). Its target for further exploration for Lithium and Bromine is 0.6-1.7 Mt lithium carbonate equivalent grading from 91-152 ppm; and 3.3-9.1 Mt bromine grading from 2,647-4,412 ppm.**

The Company holds a 100% interest in eleven SITLA mineral and minerals salt leases covering approximately 7,050 acres, 1,094 federal lithium brine claims (BLM Placer Claims) covering 21,150 acres, and 11 federal (BLM) potash prospecting permits covering approximately 25,480 acres. Through these leases, permits and claims the Company has the ability to explore for potash, lithium, and potential by-products across the entire Green River Project (approx. 32,530 acres). The Company is authorized to drill a total of 7 drill holes across the Green River Project.

Intrepid Potash, Inc. is America's largest potash company and only U.S. domestic potash producer and currently produces potash from its nearby Moab Solution Mine, which the Company believes provides strong evidence of stratigraphic continuity within this part of the Paradox Basin (www.intrepidpotash.com). Anson Resources Ltd. has advanced lithium development projects contiguous to the northern boundary of our Green River Project and neighbouring to the south. Anson has a large initial resource, robust definitive feasibility study and has recently completed successful piloting operations through its partnership with Koch Technology Solutions, as well as an offtake agreement with LG Energy Solution. The Anson exploration targets encompass the combined Mississippian Leadville Formation and the Pennsylvanian Paradox Formation brine-bearing clastic layers, which also underlie American Critical Minerals' entire project area (www.ansonresources.com).***

In 2022, the U.S. imported approx. 96.5% of its annual potash requirements with domestic producers receiving a higher sales price due to proximity to market (intrepidpotash.com/ August 15, 2024, Investor Presentation). In March 2024, the US Senate introduced a bill to include key fertilizers and potash on the US Department of Interior list of Critical Minerals which already includes lithium, and this process is well advanced with potash being added to the USGS Draft Critical Minerals List. In August 2025. Recent market estimates suggest that the global potash market is over US$50 billion annually and growing at a compound annual growth rate ("CAGR") of close to 5%. Annual lithium demand is now estimated to be over 1 million tonnes globally and continuing to grow rapidly.****

Qualified Person

The scientific and technical content of this news release has been reviewed and approved by Dean Besserer, P.Geo., the Chief Operations Officer of the Company and a qualified person for the purposes of NI 43-101.

*Historical data disclosed in this news release relating to historical wells from previous operators are historical in nature. Neither the Company nor a qualified person has yet verified this data and therefore investors should not place undue reliance on such data. The Company's future exploration work may include verification of the data. The Company considers historical results to be relevant as an exploration guide and to assess the mineralization as well as economic potential of exploration projects. Any historical well data disclosed are selective and may not represent true underlying mineralization. Please refer to the report titled "Amended and Restated NI 43-101 Technical Report, Green River Potash and Lithium Project, Grand County, USA' dated January 27, 2026, and available under the Company's profile at www.sedarplus.ca.

** The potential quantity and grades are conceptual in nature and there has been insufficient exploration to define a mineral resource, and, while reasonable potential may exist, it is uncertain whether further exploration will result in the determination of a mineral resource under NI 43-101. Targets for further exploration for potash, lithium and bromine at the Green River Project are used to provide a conceptual estimate of the potential quantity and grade of a mineral deposit, based on known and additional limited geological evidence. It is an early-stage assessment that will help to guide further exploration, but it is not a mineral resource or mineral reserve and should not be treated as such. The report titled "Amended and Restated NI 43-101 Technical Report, Green River Potash and Lithium Project, Grand County, USA' dated January 27, 2026, and available under the Company's profile at www.sedarplus.ca provides details of the basis on which the targets for further exploration have been determined.

*** American Critical Minerals' management cautions that results or discoveries on properties in proximity to the American Critical Minerals' properties may not necessarily be indicative of the presence of mineralization on the Company's properties.

**** United States Geological Survey, Mineral Commodity Summaries, January 2024 (https://pubs.usgs.gov/periodicals/mcs2024/mcs2024-potash.pdf).

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

This news release contains forward-looking information or forward-looking statements within the meaning of applicable securities legislation. All statements, other than statements of historical fact, are forward-looking statements and are based on expectations, estimates and projections as at the date of this news release. Any statement that involves discussion with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always using phrases such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", or "believes" or variations (including negative variations) of such words and phrases, or state that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved) are not statements of historical fact and may be forward-looking statements. In this news release, forward-looking statements relate, among other things, to: statements with respect to the Company's future plans and potential of its mineral properties; the Program; use of proceeds from the Program; and prospective funding of the Company.

Although the Company believes that such statements are reasonable, it can give no assurances that such expectations will prove to be correct. All such forward-looking statements are based on certain assumptions and analyses made by the Company in light of their experience and perception of historical trends, current conditions and expected future developments, as well as other factors management believes are appropriate in the circumstances. Forward-looking statements also involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance, or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Important factors that could cause actual results to differ from this forward-looking information include those described under the heading "Risks and Uncertainties" in the Company's most recently filed MD&A.

Forward-looking information contained herein are made as of the date of this news release and the Company does not intend, and expressly disclaims any obligation to, update or revise the forward-looking information contained in this news release, except as required by law. There can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements.

Neither the Canadian Securities Exchange nor its Market Regulator (as that term is defined in the policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release.

Contact:
1100-1199 West Hastings St.
Vancouver, BC Canada V6E 3T5
T 604 551 9665
E dpekeski@acmineralscorp.com

SOURCE: American Critical Minerals Corp.

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