Mr. Jason Barnard reports

FOREMOST CLEAN ENERGY ANNOUNCES UPCOMING GROUND-BASED GRAVITY SURVEY AT ITS HATCHET LAKE URANIUM PROJECT, ATHABASCA BASIN, SASKATCHEWAN

Foremost Clean Energy Ltd. will commence a ground-based gravity survey in December over its Hatchet Lake uranium property located in the eastern Athabasca basin region of Northern Saskatchewan. The gravity survey is focused on the southern extent of the Richardson trend where there has been limited drilling. The survey will be conducted by MWH Geo Survey, a leading geophysical contractor with more than 40 years of experience throughout the basin.

Foremost's president and chief executive officer Jason Barnard commented: "The Hatchet Lake gravity survey marks an important step in refining our geological model along the Richardson trend. By integrating gravity, electromagnetic, magnetic and geochemical data, we are building a more complete picture of the subsurface architecture that controls uranium mineralization in this area. The results are expected to directly influence our winter 2026 drill program, ensuring that our next round of drilling is focused, data-driven and aligned with the most prospective structural targets."

Gravity survey details

The program is anticipated to comprise approximately 788 gravity stations collected at 100-metre station intervals on 200-metre line spacing across priority structural corridors on the southeast extension of the Richardson trend extending beyond the Athabasca basin margin. These measurements will assist in refining subsurface interpretations, mapping density contrasts and identifying potential zones of hydrothermal alteration associated with uranium-bearing structures.

Richardson trend

The Hatchet Lake project covers a significant portion of the Richardson trend, a well-established basement structural corridor known to host uranium mineralization both on the property and along strike. Importantly, the southeastern extension of the Richardson trend contains more than six kilometres of undertested conductor strike length. The trend hosts brittle-ductile sheared, graphitic basement conductors, which, when reactivated, serve as enhanced hydrothermal fluid pathways that create favourable conditions for the development of basement-hosted and unconformity-related uranium deposits. The structural setting is analogous to other major uranium systems along the eastern basin margin, such as La Rocque corridor, which is host to ISO Energy's Hurricane deposit, and Cameco's La Rocque Lake uranium zone.

Historic drilling along the Richardson trend conducted by Denison Mines Corp. returned multiple uranium-bearing intervals and strong alteration consistent with a fertile mineralizing system. Significant past results include the following:

• 1.52 per cent triuranium octoxide over 0.15 metre in hole RL-13-131;
• 0.45 per cent U3O8 over 2.3 m in hole RL-13-16.

The 2025 ground gravity survey is designed to identify gravity lows and gradients associated with hydrothermal alteration halos and fault-controlled fluid pathways. Gravity anomalies that overlap with graphitic shear zones, magnetically interpreted structures and geochemical anomalies will be prioritized for drill testing.

The company is planning for an anticipated drill program to commence in early 2026, which will focus on priority targets, including those along the Richardson trend and Tuning Fork target area.

Qualified person

The technical content of this news release has been reviewed and approved by Cameron MacKay, PGeo, vice-president of exploration for Foremost, 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 National Instrument 43-101. Although the historical results may not be reliable, the company nevertheless believes that it provides an indication of the property's potential and is 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 Corp. to earn an up-to-70-per-cent interest in 10 prospective uranium properties (except for Hatchet Lake, where Foremost can 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 55,000-plus acres in Manitoba and Quebec.

We seek Safe Harbor.