Six of Nine Holes Return Anomalous Radioactivity
Kelowna, British Columbia--(Newsfile Corp. - July 7, 2026) - F4 Uranium Corp. (TSXV: FFU) ("F4" or the "Company") is pleased to announce that 5 of 6 target areas tested, returned anomalous radioactivity during the Murphy Lake program in the Athabasca Basin, Saskatchewan. Highlights include the previously announced occurrence of visually identified pitchblende in hole ML26-015 (see news release dated June 2, 2026). The completed 4092m, 9-hole drill program has defined two prospective mineralized corridors characterized by structural, alteration and radiometric signatures, which will form the focus of future follow-up exploration and drill testing. The Murphy Lake property is located 5km south of IsoEnergy's Hurricane Deposit, the highest-grade uranium deposit in the world.
Drillhole ML26-023 was drilled in Target Area 3 and intersected anomalous radioactivity up to 400 cps over a total of 0.5 m in basement rocks just below the unconformity.
The final two drillholes (ML26-022, and ML26-023) were completed in Target Areas 6 and 3 respectively, on the Murphy Lake South Trend. The holes were testing two modelled conductors running parallel to the conductor that hosts historic mineralized drillhole ML22-006: 0.065% U₃O₈ over 2.5 m (including 0.242% U₃O₈ over 0.5 m) (see F3 uranium Corp news release dated August 10, 2022). Drillhole ML26-022 encountered limonite alteration in the sandstone above the unconformity and weakly altered shearzone in the basement.
Highlight Drill Holes:
ML26-023 (Target Area 3, Murphy Lake South Trend):
Handheld scintillometer readings >300 cps over a total of 0.5m (288.5 - 289.0 m), with a peak of 400 cps in the first basement intersected below the Athabasca Unconformity.
Corresponding anomalous downhole gamma readings >500 cps over a total of 3.2 m (286.1 - 287.7 m and 290.6 - 292.2 m) peaking at 2696.9 cps (Figure 3).
Program Update:
Nine holes have now been completed across 6 target areas. Anomalous radioactivity has been intersected in all but one of the target areas, with six of the nine holes returning elevated radioactivity and multiple holes displaying strong hydrothermal alteration at the unconformity.
The Murphy Lake project now has two distinct mineralized trends: the Murphy Lake South Trend, which hosts historic hole ML22-006 has been increased to a strike length of nearly 1.3km with 3 holes from the 2026 program intersecting anomalous radioactivity on the trend. In addition, the 2026 drill program has expanded on the previous drill results from hole ML22-012 and has now defined the Murphy Lake North Trend with anomalous radioactivity intersected over more than 330m of strike length.
Drilling concluded with a total of 4,092m, well above the original planned 2,500m.