Mr. Raymond Ashley reports

F4 AND URANIUMX REPORT ANOMALOUS RADIOACTIVITY AT MURPHY

F4 Uranium Corp. has released initial results from the first two drill holes of the continuing Murphy Lake drill program in the Athabasca basin in Saskatchewan.

Drill hole ML26-015 drilled at Target 1 encountered a 1.0-metre interval of anomalous radioactivity up to 460 counts per second, along with visually identified pitchblende within Athabasca sandstone, approximately three metres above the Athabasca unconformity.

The approximately 2,500-metre drill program has completed two drill holes to date. Both drill holes were completed on the northern portion of the property Target Area 1, following up on historic hole ML22-012, which intersected 56 parts per million uranium in sandstone immediately above the unconformity.

F4 is the operator of the program, which is being fully financed by UraniumX Discovery Corp. pursuant to the option agreement, under which UraniumX can earn up to a 70-per-cent interest (see news release dated July 29, 2025).

Current drilling highlights -- ML26-015 (L1230N):

• Anomalous radioactivity:
  • Hand-held scintillometer readings greater than 300 cps over 1.0 metre (316.5 to 317.5 metres), peaking at 460 counts per second from 317.0 to 317.5 metre;
  • Corresponding anomalous downhole gamma readings exceeding greater than 500 counts per second over 4.3 metres (312.8 to 317.1 metres) above the Athabasca unconformity;
• Visually identified pitchblende:
  • Visually identified pitchblende based on core logging, present as bedding concordant blebs and nodules in Athabasca sandstone just above the unconformity;
• Intense alteration:
  • Intense hydrothermal alteration, including bleaching and clay alteration in the Athabasca sandstone immediately above the unconformity, strong chlorite alteration in the basement rocks below the unconformity, and intervals of disseminated sulphides and graphite within the basement.

ML26-016, a stepout from ML26-015 on the same section line (L1230N), intersected similar styles of hydrothermal alteration but less intense through the unconformity. Hand-held scintillometer readings on core did not exceed 300 counts per second.

Drilling will now advance to Target 2 to test a conductor target along strike of the same resistivity-low trend from the current drill holes, as identified by the recent partner-financed moving-loop electromagnetic (MLEM) survey (see news release dated May 5, 2026).

Previous results guiding current targeting:

• ML22-006: 0.065 per cent U3O8 (triuranium octoxide) over 2.5 metres (including 0.242 per cent U3O8 over 0.5 metre) within a 4.2-metre graphitic deformation zone and intense alteration;
• ML22-012 (1.4 kilometres north): 56 parts per million uranium in sandstone immediately above the unconformity;
• 2026 MLEM survey: refined and extended key conductive trends, defining up to five priority target areas, including along strike from the 2022 mineralized intercepts.

Erik Sehn, PGeo, vice-president, exploration, commented: "The presence of visually identified pitchblende in the first hole of the 2026 program, together with the associated alteration and geophysical setting, is consistent with our targeting model at Murphy Lake. We look forward to assay results and to testing the additional high-priority targets across the property."

The natural gamma radiation detected in the drill core, as detailed in this news release, was measured in counts per second using a hand-held Radiation Solutions RS-125 spectrometer, which has been calibrated by Radiation Solutions Inc. The company designates readings exceeding 300 counts per second 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 counts per second as "highly radioactive" and readings surpassing 65,535 counts per second 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 counts per second 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 McLean 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 metres. The 2022 maiden drill program at the Murphy Lake property consisted of 14 completed drill holes totalling 6,850 metres; drill hole ML22-006 intersected 0.065 per cent U3O8 over 2.5 metres from 322.5 metres to 325.0 metres, including 0.242 per cent U3O8 over 0.5 metre.

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 NI 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 deposit, NexGen Energy's Arrow deposit and IsoEnergy's Hurricane deposit. 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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