Mr. Raymond Ashley reports

F4 AND URANIUMX EXPAND MURPHY LAKE DRILLING BY 60% TO 4,000 M AS ALL TARGET AREAS RETURN ANOMALOUS RADIOACTIVITY

F4 Uranium Corp. has released positive drilling results and expanded its continuing Murphy Lake drill program in the Athabasca basin in Saskatchewan. Due to continued encouraging results including anomalous radioactivity in 100 per cent of target areas drill tested during this program, coupled with strong drilling efficiency, the program scope has been increased from the originally planned 2,500 metres to 4,000 metres.

Drill hole ML26-021 encountered strong limonite, bleaching and clay alteration in the sandstone above the unconformity. The hole also intersected anomalous radioactivity up to 350 counts per second (cps) over a total of 1.0 metre in basement rocks just below the unconformity.

The three most recent drill holes (ML26-019A, ML26-020 and ML26-021) were completed in target areas 4 and 5 on the Murphy Lake South trend. All three holes intersected anomalous radioactivity and/or strong alteration along strike from historic mineralization in ML22-006: 0.065 per cent U3O8 (triuranium octoxide) over 2.5 metres (including 0.242 per cent U3O8 over 0.5 metre) (see F3 Uranium Corp.'s news release dated Aug. 10, 2022).

Highlight drill holes:

• ML26-019A (Target Area 4):
  • Hand-held scintillometer readings greater than 300 cps over 1.0 m (323.0 to 323.5 m and 324.0 to 324.5 m), with a peak of 510 cps in basement rocks just below the unconformity;
  • Corresponding anomalous downhole gamma readings greater than 500 cps over 3.8 m (319.7 to 323.5 m), peaking at 2,564 cps;
• ML26-021 (Target Area 5):
  • Hand-held scintillometer readings greater than 300 cps over a total of 1.0 m (287.5 to 288.0 m and 292.0 292.5 m), with a peak of 350 cps; associated with strong limonite, bleaching and clay alteration in the Athabasca sandstone above the unconformity;
  • Corresponding anomalous downhole gamma readings greater than 500 cps over 7.5 m (286.2 to 293.7 m), peaking at 1,694 cps.

Program update:

• Seven holes have now been completed across multiple target areas. Anomalous radioactivity has been intersected in all target areas tested to date, with five of the seven holes returning elevated radioactivity and every hole displaying strong hydrothermal alteration at the unconformity.
• Drilling is now advancing to Target Area 6 to test a strong parallel conductor identified by the recent partner-financed MLEM (moving-loop electromagnetic) survey.

Erik Sehn, PGeo, vice-president, exploration, commented: "This Murphy Lake program continues to deliver strong results. These latest three holes on the Murphy Lake South trend have added more anomalous radioactivity and strong alteration, bringing the total to five holes with radioactivity intersected in four target areas to date -- two on the Murphy Lake North trend and two on the Murphy Lake South trend. With approximately 3,200 metres drilled so far, these encouraging intersections, combined with better-than-expected drilling efficiency, justify expanding the program to 4,000 metres. We look forward to testing additional high-priority targets with the increased metreage."

F4 is the operator of the fully financed program, with UraniumX Discovery Corp. earning up to a 70-per-cent interest pursuant to the option agreement (news release dated July 29, 2025).

The natural gamma radiation detected in the drill core, as detailed in this news release, was measured in counts per second (cps) using a hand-held Radiation Solutions RS-125 spectrometer, which has been calibrated by Radiation Solutions Inc. The company designates readings exceeding 300 cps on the hand-held spectrometer (occasionally referred to as a scintillometer in industry terminology; this stems from historical naming conventions and the shared functionality of detecting gamma radiation between a spectrometer and a scintillometer) as "anomalous," readings above 10,000 cps as "highly radioactive" and readings surpassing 65,535 cps as off-scale. The company may also report radioactivity as measured with a downhole QL-40GR gamma probe from Mount Sopris. The company designates readings exceeding 500 cps on the downhole gamma probe as "anomalous."

Readers are cautioned that hand-held spectrometer (scintillometer) and downhole gamma probe readings are preliminary in nature, are not directly or consistently correlated to uranium grades determined by chemical assay, and should not be relied upon as a substitute for analytical results. All radiometric readings are subject to confirmation by laboratory assay.

Samples from the drill core are split into half sections on site. Where possible, samples are standardized at 0.5-metre downhole intervals. One-half of the split sample is sent to SRC Geoanalytical Laboratories (an SCC ISO/IEC 17025:2005-accredited facility) in Saskatoon, Sask., while the other half remains on site for reference. Analysis includes a 63-element suite, including boron by ICP-OES, uranium by ICP-MS, and gold analysis by ICP-OES and/or AAS.

The company considers uranium mineralization with assay results of greater than 1.0 weight per cent U3O8 as "high grade" and results greater than 20.0 weight per cent U3O8 as "ultrahigh grade."

All depth measurements reported are downhole and true thicknesses are yet to be determined.

About Murphy Lake

F4's 609-hectare Murphy Lake property is located in the northeastern corner of the Athabasca basin, 30 kilometres northwest of Orano's McClean Lake deposits, five kilometres south of IsoEnergy's Hurricane uranium deposit and four kilometres east of Cameco's La Rocque Lake uranium zone, where drill hole Q22-040 intersected 29.9 per cent U3O8 over 7.0 m. The 2022 maiden drill program at the Murphy Lake property consisted of 14 completed drill holes totalling 6,850 m; drill hole ML22-006 intersected 0.065 per cent U3O8 over 2.5 m from 322.5 m to 325.0 m, including 0.242 per cent U3O8 over 0.5 m.

Qualified person

The technical information in this news release has been reviewed and approved on behalf of the company by Sam Hartmann, PGeo, president and chief operating officer of F4 and a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects.

This news release also refers to neighbouring properties in which F4 Uranium has no interest, and the qualified person has been unable to verify the information from those properties. Mineralization on those neighbouring properties is not necessarily indicative of mineralization on the Murphy Lake property.

For additional information on the Murphy Lake property, please refer to the National Instrument 43-101 report titled "Technical Report For The Murphy Lake Project, NE Athabasca Basin, Saskatchewan, Canada," effective March 20, 2024, available on SEDAR+.

About F4 Uranium Corp.

F4 Uranium is a Canadian uranium exploration company focused on the Athabasca basin in Northern Saskatchewan, led by the management and exploration team behind multiple uranium discoveries in the basin, including most recently Patterson Lake North and Broach Lake. The project portfolio comprises 16 wholly owned properties totalling approximately 157,000 hectares, several of which sit near established uranium deposits, including Paladin's Triple R, NexGen Energy's Arrow and IsoEnergy's Hurricane. The assets were spun out of F3 Uranium in 2024. F4's exploration program is split between the western and eastern sides of the Athabasca basin, with the company operating as both an explorer and project generator, providing investors early-stage exposure to the basin.

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