| F3 Begins 3,000 Meter Fall Drill Program at Tetra Zone 
 newsfilecorp.com
 
 October 08, 2025 4:30 AM EDT | Source:  F3 Uranium Corp.
 
 Kelowna, British Columbia--(Newsfile Corp. - October 8, 2025) - F3 Uranium Corp (TSXV: FUU) (OTCQB: FUUFF) ("F3" or "the Company")  is pleased to announce a fall drill program at its 100% owned Broach  Lake Property, on the recently discovered high-grade Tetra Zone (see NR  August 5, 2025).
 
 This 3,000m diamond drilling fall program is  designed to test the extent of the uranium mineralization which is  currently highlighted by PLN25-205, which returned a 1.0m high grade  interval with 2.50% U3O8 within a 22.5m mineralized main interval averaging 0.26% U3O8  and PLN25-217, which intersected a total of 67.0m composite anomalous  radioactivity including 49.0m of continuous radioactivity (see Map 1).
 
 Ground  EM surveying has also been completed, and 3D inversions are in  progress; these results will be incorporated into the targeting model  for regional drill targeting along strike.
 
 Sam Hartmann, Vice President Exploration, commented:
 
 "We  are excited to resume drilling at Tetra now that ground geophysics has  been completed, and plan to focus this fall drill program at a deposit  scale on the Tetra Zone, initially stepping out from high grade  mineralization as in PLN25-205 and the significant intervals of  radioactivity in PLN25-217. The unique geological setting of the Tetra  Zone with differs from many basement hosted uranium deposits in the  area, is also reflected in the geophysical responses, where weaker  conductivity is associated with less resistive rocks associated with a  structural damage zone hosting the Tetra Zone."
 
 
  
 Map 1. Broach Lake - Tetra Zone Fall Drilling Target Area
 
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 The  natural gamma radiation detected in the drill core, as detailed in this  news release, was measured in counts per second (cps) using a handheld  Radiation Solutions RS-125 spectrometer which has been calibrated by  Radiation Solutions Inc. The Company designates readings exceeding 300  cps on the handheld spectrometer (occasionally referred to as a  scintillometer in industry parlance; this colloquial usage 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". However, readers are  cautioned that spectrometer or scintillometer measurements often do not  directly or consistently correlate with the uranium grades of the rock  samples and should be regarded solely as a preliminary indicator of the  presence of radioactive materials.
 
 The Company considers uranium mineralization with assay results of greater than 1.0 weight % U3O8 as "high grade" and results greater than 20.0 weight % U3O8 as "ultra-high grade".
 
 All depth measurements reported are down-hole and true thicknesses are yet to be determined.
 
 About the Patterson Lake North Project:
 
 The  Company's 42,961-hectare 100% owned Patterson Lake North Project (PLN)  is located just within the south-western edge of the Athabasca Basin in  proximity to Paladin's Triple R and NexGen Energy's Arrow high-grade  uranium deposits, an area poised to become the next major area of  development for new uranium operations in northern Saskatchewan. The PLN  Project consists of the 4,074-hectare Patterson Lake North Property  hosting the JR Zone Uranium discovery approximately 23km northwest of  Paladin's Triple R deposit, the 19,864-hectare Minto Property, and the  19,022-hectare Broach Property hosting the Tetra Zone, F3's newest  discovery 13km south of the JR Zone. All three properties comprising the  PLN Project are accessed by Provincial Highway 955.
 
 Qualified Person:
 
 The  technical information in this news release has been prepared in  accordance with the Canadian regulatory requirements set out in National  Instrument 43-101 and approved on behalf of the company by Raymond  Ashley, P.Geo., President & COO of F3 Uranium Corp, a Qualified  Person. Mr. Ashley has reviewed and approved the data disclosed.
 
 This  news release also refers to neighboring properties in which F3 Uranium  has no interest, and the Qualified Person has been unable to verify the  information from those properties. Mineralization on those neighboring  properties is not necessarily indicative of mineralization on the PLN  Project. For additional information on the PLN Project, please refer to  the report titled "Technical Report on the Patterson Lake North Project,  Northern Saskatchewan, Canada" prepared by SLR International  Corporation with a signing date of January 25, 2023 and an effective  date of November 20, 2023 available at  www.sedarplus.ca, and prepared in accordance with NI 43-101.
 
 About F3 Uranium Corp.:
 
 F3  is a uranium exploration company, focusing on the high-grade JR Zone  and new Tetra Zone discovery 13km to the south in the PW area on its  Patterson Lake North (PLN) Project in the Western Athabasca Basin. F3  currently has 3 properties in the Athabasca Basin: Patterson Lake North,  Minto, and Broach. The western side of the Athabasca Basin,  Saskatchewan, is home to some of the world's largest high grade uranium  deposits including Paladin's Triple R project and NexGen's Arrow  project.
 
 Forward Looking Statements
 
 This news release  contains certain forward-looking statements within the meaning of  applicable securities laws. All statements that are not historical  facts, including without limitation, statements regarding future  estimates, plans, programs, forecasts, projections, objectives,  assumptions, expectations or beliefs of future performance, including  statements regarding the suitability of the Properties for mining  exploration, future payments, issuance of shares and work commitment  funds, entry into of a definitive option agreement respecting the  Properties, are "forward-looking statements." These forward-looking  statements reflect the expectations or beliefs of management of the  Company based on information currently available to it. Forward-looking  statements are subject to a number of risks and uncertainties, including  those detailed from time to time in filings made by the Company with  securities regulatory authorities, which may cause actual outcomes to  differ materially from those discussed in the forward-looking  statements. These factors should be considered carefully and readers are  cautioned not to place undue reliance on such forward-looking  statements. The forward-looking statements and information contained in  this news release are made as of the date hereof and the Company  undertakes no obligation to update publicly or revise any  forward-looking statements or information, whether as a result of new  information, future events or otherwise, unless so required by  applicable securities laws.
 
 The TSX Venture Exchange and the  Canadian Securities Exchange have not reviewed, approved or disapproved  the contents of this press release, and do not accept responsibility for  the adequacy or accuracy of this release.
 
 F3 Uranium Corp.
 750-1620 Dickson Avenue
 Kelowna, BC V1Y9Y2
 Contact Information
 Investor Relations
 Telephone: 778 484 8030
 Email:  ir@f3uranium.com
 
 ON BEHALF OF THE BOARD
 "Dev Randhawa"
 Dev Randhawa, CEO
 
 
  SOURCE:  F3 Uranium Corp. |