Premier American Uranium: Asset Purchase Agreement Signed With DISA Uranium Corp.

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As announced on September 15, Premier American Uranium (PUR) has entered into an asset purchase agreement dated September 14, 2026, with DISA Uranium Corporation, in which Premier has agreed to sell all of its rights, title and interest in a non-core portfolio of Colorado assets in return for US$2.0M in DISA Uranium shares and an equal number of warrants. Moreover, DISA Uranium has agreed to make a concurrent US$5.0M equity investment in Premier at C$0.75 per subscription receipt, representing a 41% premium to close on September 14.

STRATEGIC TRANSACTIONS WITH DISA URANIUM

As per the announced transaction, DISA Uranium will be receiving a Colorado portfolio consisting of 8 U.S. Department of Energy leases under the Uranium Leasing Program, and 545 unpatented and patented mining claims. The specific Projects in the portfolio will be the Outlaw Mesa, Atkinson Mesa, Monogram Mesa and Slick Rock Projects - all considered to be non-core by Premier. In return, Premier will receive US$2.0M worth of equity consisting of 25,413 DISA Uranium shares and warrants on closing of the transaction which is expected towards year-end. Concurrent to the asset purchase, DISA Uranium has also agreed to acquire subscription receipts at the offering price of C$0.75 per subscription receipt for aggregate proceeds of US$5.0M (as converted to CAD dollars using the applicable exchange rate). Each subscription receipt will entitle the holder thereof to automatically receive one common share of Premier. This represents a 41.5% premium to the closing price of Premier shares on September 14, 2026.  Upon close and conversion, DISA Uranium will own ~8.8% pro forma of Premier common shares and DISA CEO Greyson Buckingham will be nominated to the Premier Board of Directors. Along with Sachem Cove (~20%), IsoEnergy (8%) and Mega Uranium (2%), DISA will be added to an already impressive list in Premier’s shareholder registry.

DISA URANIUM ACTING QUICKLY POST-FORMATION & FINANCING

As announced last month, DISA Technologies signed a landmark definitive agreement to form DISA Uranium Corp. Following a $105M financing, DISA Uranium started building its uranium portfolio by acquiring IsoEnergy’s Utah uranium portfolio. The rationale was that DISA Uranium will now be able to combine a portfolio of permitted, past producing conventional uranium assets with its proprietary High-Pressure Slurry Ablation (HPSA) processing technology and remediation/recovery business. Given the recent $105M financing, DISA is positioning itself to be an integrated domestic uranium platform boasting both proprietary processing capabilities and a portfolio of uranium assets located in Utah. The assets being contributed from IsoEnergy included the Tony M Mine, the Daneros Mine, the Rim Mine, the Sage Plain Project and the Flatiron Project – all of which are permitted and past producing assets. As announced today, DISA has added Premier’s non-core Colorado portfolio to its uranium asset mix.

Founded in 2018 and based out of Wyoming, DISA Technologies is a company that offers solutions to enhance recovery and transform waste material into productive assets across mining and remediation. The company specializes in clean resource recovery and legacy mine remediation using a patented High-Pressure Slurry Ablation (HPSA) processing technology. The core technology uses high pressure slurry jets to selectively fracture and liberate critical minerals from ore or waste, without needing the more traditional methods involving grinding or harsh chemicals. HPSA technology is a scalable and modular platform which can be integrated into multiple points in the processing flowsheet. When applied, HPSA has been proven to extract additional value from lower grade ore in a faster, cleaner and more efficient way. When applied, HPSA has the potential to significantly reduce operating costs by upgrading mineralized feedstock and by reducing waste volumes. This technology has been applied to various minerals including copper, zinc, potash, rare earths, precious metals, nickel and of course, uranium. HPSA benefits include:

PREMIER’S FOCUS NOW SQUARELY ON THE KEY ASSETS – CEBOLLETA & KAYCEE

With DISA Uranium now involved with Premier, the development focus will sit squarely on two key assets: Cebolleta IN New Mexico and Kaycee in Wyoming.

Cebolleta - Given Cebolleta’s sandstone-hosted uranium mineralization, Premier management believes that HPSA technology may be well suited for future recovery. In terms of recent developments, earlier this summer Premier completed a drill program on the property. Core drilling occurred at four locations targeting mineralization representative of the underground mining portion of the company’s current MRE. Mineralized core was collected from a total of 18 vertical holes (between 4 to 6 per location). The program encompassed a total of 6,030ft of PQ-core drilling. Metallurgical testing was also undertaken with results expected in the weeks ahead. Recall that as released last October, a PEA for the project outlined a life of mine spanning 13 years and averaging the production of 1.4M lbs U3O8 per year. The latest from Cebolleta can be found here:

Kaycee - Located in Wyoming’s Powder River Basin (PRB), the Kaycee Project covers over 46 square miles of mineral rights over a 36-mile mineralized trend hosting more than 430 miles of interpreted roll fronts. The Project is believed to be the only project in the PRB where all three known historically productive sandstone formations (Wasatch, Fort Union, and Lance) are mineralized and potentially accessible for ISR extraction. Excluding the current 100,000ft drilling campaign, ~328,000ft have been drilled since 2023. Recall that an updated NI43-101 Technical Report (2025) identified an exploration target between 11.5M-30.0M lbs U3O8 at average grade of 0.06%-0.10%. The Project is strategically located near established ISR mines such as Nichols Ranch, Christensen Ranch and Irigaray (among others). The latest from Kaycee can be found here:

VALUATION & CONCLUSION

The announced transaction demonstrates a mutually beneficial partnership between Premier and DISA Uranium, a company with an established High Pressure Slurry Ablation (HPSA) recovery technology which is currently being used to efficiently recover ore across a multitude of mines and commodity types. Recall that DISA Uranium was formed last month and raised $105M in a private placement supported by strategic mining and technology investors including BHP Ventures, Galvanize Climate Solutions, Valor Equity Partners, Evok Innovations, Halliburton Labs, Veriten and Tembo Capital. Given Cebolleta’s sandstone-hosted uranium mineralization, Premier management believes that DISA’s HPSA technology may be well suited for future recovery. We also note that upon conversion of the subscription receipt, DISA Uranium will own ~8.8% of Premier’s common shares on a pro-forma basis. DISA Uranium would be the latest Premier strategic owner joining the likes of Sachem Cove, IsoEnergy and Mega Uranium. DISA is positioning itself to becoming a major integrated player in the U.S. uranium space so we see any involvement with Premier as beneficial to both parties. We maintain our $100 per lb LT uranium price deck along with our 0.65x NPV8% derived valuation methodology for Premier. This results in a maintained price objective of C$1.55 per share (rounded). Shares of Premier American Uranium currently trade at a P/NAV of 0.25x, or given cash on hand in treasury, at ~0.11x cash/mcap.