Mr. Jason Barnard reports

FOREMOST CLEAN ENERGY ADVANCES MURPHY LAKE SOUTH URANIUM PROJECT WITH AMBIENT NOISE TOMOGRAPHY SURVEY AHEAD OF DRILLING

Foremost Clean Energy Ltd. has engaged Caur Technologies Inc. to conduct an ambient noise tomography (ANT) survey on the company's Murphy Lake South uranium property, located in the world-renowned Athabasca basin region of Northern Saskatchewan. The ANT survey is designed to refine targets along a notable trend of stacked graphitic conductors associated with known unconformity offsets south of MP-15-03 (0.25 per cent U3O8 (triuranium octoxide) over 6.0 metres). Many of the individual conductors within this stacked system remain underexplored. It also aims to generate new targets along east-west- and northeast-trending structural corridors defined by magnetics and EM (electromagnetics), which are largely untested by historical drilling.

Jason Barnard, president and chief executive officer of Foremost, commented: "Nuclear energy is experiencing unprecedented growth, highlighted by Westinghouse's plans to build 10 new reactors in the U.S. and more than $90-billion in private energy and AI [artificial intelligence] investments announced in Pennsylvania. These developments underscore the accelerating demand for reliable, clean nuclear power. As North America rebuilds its uranium supply chain, Foremost is advancing high-potential projects in Saskatchewan's Athabasca basin, home to the world's richest uranium deposits.

"Deploying ANT at Murphy represents another step in our systematic approach to exploration. This technology has the potential to detect structural offsets, fault zones and hydrothermal alteration within sandstone -- features directly linked to unconformity-style uranium mineralization. Recent ANT surveys across the basin have successfully mapped alteration halos extending one to two kilometres, with velocity anomalies correlating to known mineralization at deposits like IsoEnergy's Hurricane. With drilling commencing postsurvey, ANT sharpens our targeting and adds confidence as we test Murphy's most prospective zones.

"Our unique collaboration with Denison Mines Corp. positions us to benefit from their industry-leading expertise as they advance Canada's first ISR [in situ recovery] uranium mine toward production, which could ultimately enhance our ability to accelerate developmental timelines.

"The recent launch of mining at McClean North by Denison and Orano Canada (July 17, 2025), using the innovative Sabre mining method, underscores the significant production potential of the region and demonstrates how access to cutting-edge technology can unlock the value of high-grade uranium deposits. Building on Denison's historical exploration work, Foremost is systematically advancing multiple discovery-ready assets towards resource definition and discovery -- strategically positioning our company to be able deliver responsibly sourced uranium into a supply-constrained market, where analyst project that the U.S. could face up to an annual deficit of 67 million pounds U3O8 by 2035."

Previous drilling at Murphy has confirmed the presence of significant structural complexity, including approximately 60 to 90 metres of unconformity offset -- an important control on fluid flow and mineral deposition in this style of system. The ANT survey, scheduled to commence this week, is expected to produce a three-dimensional seismic velocity model of the subsurface by measuring natural background vibrations. The seismic velocities vary with rock type, structure and alteration intensity -- offering a powerful means of imaging geologic features relevant to unconformity-related uranium deposits.

The 17,676-acre/7,153-hectare Murphy Lake South project is situated just northwest of the McClean Lake mill and lies adjacent to the LaRocque Lake conductive corridor, host to IsoEnergy's Hurricane deposit, known to host the highest-grade uranium deposit in the world. Historical drilling on the property by Denison intersected anomalous uranium mineralization and key alteration signatures, such as:

• 0.25 per cent U3O8 over six metres (drill hole MP-15-03);
• 0.13 per cent U3O8 over 12.5 metres just above the unconformity (drill hole MP-16-112);
• 0.03 per cent U3O8 over 22.5 metres from 255 to 277.5 metres (MP-16-173).

These results, together with confirmed structural complexity, make Murphy a compelling target for a major uranium discovery.

The phase 1 diamond drilling program is now expected to commence upon the completion of the ANT survey in August, testing targets within 200 to 350 metres of surface. A phase 2 2026 winter program is planned to expand on successful results and test additional conductive trends best accessed through lakes.

Qualified person

The technical content of this news release has been reviewed and approved by Cameron MacKay, PGeo, vice-president of exploration for Foremost Clean Energy and a qualified person under National Instrument 43-101.

A qualified person has not performed sufficient work or data verification to validate the historical results in accordance with NI 43-101. Although the historical results may not be reliable, the company nevertheless believes that they provide an indication of the property's potential and are relevant for any future exploration program.

About Foremost Clean Energy Ltd.

Foremost is a rapidly growing North American uranium and lithium exploration company. The company holds an option from Denison Mines to earn up to a 70-per-cent interest in 10 prospective uranium properties (with the exception of the Hatchet Lake, where Foremost is able to earn up to 51 per cent) spanning over 330,000 acres in the prolific, uranium-rich Athabasca basin region of Northern Saskatchewan. As the demand for carbon-free energy continues to accelerate, domestically mined uranium and lithium are poised for dynamic growth, playing an important role in the future of clean energy. Foremost's uranium projects are at different stages of exploration, from grassroots to those with significant historical exploration and drill-ready targets. The company's mission is to make significant discoveries alongside and in collaboration with Denison through systematic and disciplined exploration programs.

Foremost also has a portfolio of lithium projects at varying stages of development, which are located across more than 55,000 acres in Manitoba and Quebec.

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