Airborne MT Points to Patterson Lake Corridor at Todd Lake

First Work Completed by F4 on the Flagship Todd Lake Property

Kelowna, British Columbia--(Newsfile Corp. - December 15, 2025) - F4 Uranium Corp (TSXV: FFU) ("F4" or "the Company") is pleased to announce that it has completed an airborne Mobile MagnetoTellurics (Mobile MT) survey over the southern portion of its Todd Lake Project, located in the southwestern Athabasca Basin. The survey identified possible extensions to the Patterson Lake Corridor (PLC) and the Carter Trends, within the Clearwater Domain. The PLC is a prolific conductive corridor which hosts both NexGen Energy's Arrow (20km east) and Paladin's Triple R deposits (14km to the east).

The survey was carried out by Expert Geophysics Surveys Inc. and was designed to complete total coverage on the entire property, with the northern half of the property having been flown in the summer of 2023 (Fig 1). The survey was designed to identify potential conductive systems representing the continuation or extensions of the PLC which trends toward the property (Fig 1).

The results of this survey will be used to advance the understanding of the property and develop new targets for future ground geophysical surveys and drill programs on the Todd Lake Project. The Todd Lake Project has never been drill tested, despite its proximity to Triple R and Arrow deposit and being located just 4km southwest of one of the Athabasca basins' newest discoveries, F3 Uranium's Tetra Zone. The Todd Lake Project, along with Clearwater West and the Wales Lake Projects highlight F3's western Athabasca portfolio in an immerging uranium district in the western Athabasca basin.

Erik Sehn, Vice President Exploration, commented:

"F4 is pleased to have completed its first work on our westside flagship Todd Lake Project, located along trend of the prolific Patterson Lake Corridor and with no historic drilling to date. The results of the survey highlight resistivity low trends on the southern portion of the property that lie along the interpreted strike of the PLC. With F3 Uranium's recent Tetra Zone discovery being hosted within the Clearwater Domain, only 4 km north of Todd Lake, it is now demonstrated that the Clearwater Domain is capable of hosting high-grade uranium mineralization. These results reinforce F4's view that the Todd Lake Project holds strong exploration potential in what we think is amongst the most fertile areas in the region. The next steps will be to refine these results with targeted ground geophysical surveys to develop and prioritize drill targets for a maiden drill program on the property."