F3 Hits 2.30m >10,000 cps Within 29.5m Radioactivity - 15m Step-Out at Tetra

On November 10, 2025, F3 Uranium announced initial scintillometer results from its fall drill program at the newly discovered Tetra Zone on its Broach Lake property. The program is designed to confirm the orientation and extent of mineralization.

The highlight was drill hole PLN25-219A, a 15-meter step-out from a previous hole. It intersected a 27.5-meter interval of continuous radioactivity from 392.0m to 419.5m down-hole. This zone included a 2.3-meter interval of high radioactivity (greater than 10,000 counts per second, or cps) with a peak reading of 30,500 cps.

Sam Hartmann, the VP of Exploration, stated this result validates the geological model of a northwest plunge to the mineralization and described it as the "strongest result to date at Tetra" in terms of radioactivity.

This news is materially positive. It builds directly upon the successful Tetra Zone discovery from April 2025 and subsequent positive drill results through the summer. The stated goal of this drill program was to understand the geometry of the mineralized zone, and this successful 15-meter step-out confirms the company's geological model, which is critical for efficient and effective future drilling.

The key takeaway is the description of this hole as the "strongest result to date" in terms of radioactivity. While scintillometer readings are not chemical assays, high cps readings in the Athabasca Basin are a very reliable preliminary indicator of high-grade uranium. The company's prior discovery hole at Tetra (PLN25-205) reported >10,000 cps and was later confirmed by assays to contain 1.0 meter of 2.50% U3O8. This new hole shows a wider interval of >10,000 cps radioactivity, suggesting the potential for even stronger assay results.

The stock has been in a significant downtrend since a C$20 million financing was announced in September at prices ranging from C$0.20 to C$0.33, well above the current price. This created a significant overhang. This strong operational result is the first major positive catalyst since that financing and has the potential to reverse the negative sentiment and stock trend, provided the follow-up assays confirm the high-grade potential.

However, the risk-averse view demands caution until assays are released. The market has not rewarded F3 for its recent string of positive exploration news, and a single good drill intercept may not be enough to break the technical downtrend on its own. The result is excellent, but the market's reaction is what ultimately matters for the stock price.

F3 Uranium Corp. is a Canadian uranium exploration company focused on advancing its 100%-owned Patterson Lake North (PLN) project in the Athabasca Basin, Saskatchewan. The PLN project is comprised of three contiguous properties: Patterson Lake North, Minto, and Broach. The project is host to two significant, recent, high-grade uranium discoveries: 1. JR Zone: Discovered on the PLN property, it has returned numerous high-grade intercepts, including 4.5 meters of 50.1% U3O8 (Dec 3, 2024). A maiden mineral resource estimate is expected in Q4 2025. 2. Tetra Zone: A new discovery made in April 2025 on the Broach property, located 13 km south of the JR Zone. Initial assay results confirmed high-grade mineralization (1.0m of 2.50% U3O8), and ongoing drilling, including the latest results, continues to expand the zone.