Drilling Intersects Anomalous Radioactivity 1km East of Tetra Zone

F3 Uranium reports highest radioactivity to date at PLN, with key assays still pending.

What the company is saying

F3 Uranium Corp. (TSXV:FUU, OTCQB:FUUFF) is highlighting technical progress at its 100% owned Patterson Lake North Project, emphasizing the discovery of the highest handheld spectrometer radioactivity reading to date outside the JR and Tetra Zones. The company frames PLN26-232 as a significant step forward, citing five intervals of anomalous radioactivity, peaking at 4,400 cps, and interprets this as evidence for a potentially larger mineralized system. Management, through President and VP Exploration Raymond Ashley, presents the results as an 'encouraging progression' and signals increased confidence in the Broach area by announcing the imminent addition of a second drill rig. The tone is optimistic, focusing on momentum and the potential for further discoveries, while acknowledging that assay results for the most promising hole are still pending. The announcement also provides context on property scale and prior results, but operational and financial details are limited to technical disclosures.

What the data suggests

The update details three summer 2026 drill holes at PLN, with PLN26-232 intersecting five discrete intervals of anomalous radioactivity between 352.0m and 649.5m, including a peak of 4,400 cps from 610.5m to 611.0m, the highest recorded outside the JR and Tetra Zones. The other two holes, PLN26-230 and PLN26-231A, encountered strong alteration but no radioactivity above 300 cps. Assay results for PLN26-232 are pending, so uranium grade and economic significance remain unconfirmed. The winter 2026 program drilled approximately 3,350m, with PLN26-225 returning 0.5m at 0.06% U₃O₈ from 418.5m to 419.0m, while other holes did not meet reporting thresholds. Previously, PLN25-217 returned 3.5m at 0.30% U₃O₈, including 0.5m at 1.04% U₃O₈. The project covers 42,960 hectares, with the Broach Property (19,022 hectares) hosting the Tetra Zone. The technical data is specific and transparent, but the absence of assays for PLN26-232 means the true mineral potential is still unproven.

Analysis

The announcement provides concrete, realised technical results from recent drilling, including specific radioactivity readings and uranium assay intervals, which are credible and appropriate for an exploration-stage uranium company. However, the tone is somewhat inflated by forward-looking statements about the potential for a larger mineralized system and the addition of a second drill rig, which, while operationally relevant, are not yet supported by assay results for the most promising hole (PLN26-232). The expansion of drilling capacity signals increased capital outlay, but there is no immediate earnings or resource impact disclosed. The majority of claims are realised (drill results, locations, technical context), but the most material upside (pending assays, system potential) remains speculative. The gap between narrative and evidence is moderate: technical progress is real, but the language around 'potential' and 'momentum' slightly overstates what has been achieved to date.

Risk flags

• ●The main technical risk is that the high radioactivity readings in PLN26-232 may not translate into economically significant uranium grades when assays are returned. Handheld spectrometer readings are preliminary and not always directly correlated with uranium content, so there is a risk of disappointing chemical results.
• ●Operational risk is elevated as the company is expanding its drilling program with a second rig, increasing capital outlay before confirming the economic significance of the new zone. If follow-up drilling fails to yield meaningful uranium intervals, sunk costs could rise without advancing the project.
• ●Disclosure risk exists as no financial data, cost estimates, or cash position are provided. Investors have no visibility into the company's ability to sustain expanded drilling or manage exploration budgets if results do not meet expectations.

Bottom line

F3 Uranium's latest drilling at Patterson Lake North has delivered the highest radioactivity readings yet outside its core zones, but the economic significance hinges on pending assays for PLN26-232. The company is moving quickly to capitalize on these technical results by adding a second drill rig, signaling confidence but also increasing spend before confirming uranium grades. The technical disclosure is robust, but without assay data, investors cannot yet assess the true value or scale of the new discovery. The main catalyst will be laboratory results for PLN26-232 and subsequent follow-up drilling. Until those assays are released, the upside remains speculative and the key takeaway is that technical promise has not yet translated into proven resource value.

Announcement summary

(TSXV:FUU, OTCQB:FUUFF) F3 Uranium Corp. provided an update on three drill holes completed during its 2026 summer exploration program at the 100% owned Patterson Lake North Project (PLN) in the Western Athabasca Basin, British Columbia, Canada. The three holes are located between 1 km and 1.6 km east, southeast, and south of the Tetra Zone discovery on the Broach Lake property. All three holes intersected hydrothermal alteration associated with the Athabasca Unconformity, but hole PLN26-232 encountered several discrete intervals of anomalous radioactivity, with a peak of 4,400 counts per second (cps) from 610.5m to 611.0m, which is the highest recorded on a handheld spectrometer to date on the PLN Project outside the JR and Tetra Zones. PLN26-232 intersected five discrete intervals of radioactivity ranging from 0.5m to 1.0m each, between 352.0m and 649.5m depth, with a peak radioactivity of 4,400 cps at 610.5m to 611.0m in strongly altered basement lithology. A second drill rig will be added to the program to follow up on the results of PLN26-232. Holes PLN26-230, 231A, and 232 are located approximately 1,600m south, 1,300m southeast, and 1,000m east of the Tetra Zone discovery, respectively. Hole PLN26-232 was drilled approximately 1 km east of the Tetra Zone discovery, testing Target Area 1, as a follow-up of alteration observed in hole PLN26-229. Assay results for PLN26-232 are pending. Holes PLN26-230 and PLN26-231A tested modelled electromagnetic conductors and gravity-low anomalies in Broach Target Area 2, encountering strong alteration near the unconformity but no radioactivity above 300 cps. The company also reported assay and geochemical results from its approximately 3,350 m winter 2026 drill program, which tested extensions of the Tetra Zone. PLN26-225 returned 0.5 m at 0.06% U₃O₈ from 418.5 to 419.0m, while other completed holes returned no uranium assay intervals meeting reporting criteria. Previously reported results from PLN25-217 included 3.5 m at 0.30% U₃O₈ from 400.0 to 403.5 m, including 0.5 m at 1.04% U₃O₈. The Patterson Lake North Project covers 42,960 hectares and includes the 4,074-hectare Patterson Lake North Property (hosting the JR Zone uranium discovery), the 19,864-hectare Minto Property, and the 19,022-hectare Broach Property (hosting the Tetra Zone discovery). All three properties are accessed by Provincial Highway 955. Raymond Ashley, P.Geo., President and VP Exploration, is the Qualified Person for the technical information in this release.

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