Mr. Dev Randhawa reports

F3 - STARTS HIGH RESOLUTION GEOPHYSICS AT TETRA ZONE

F3 Uranium Corp. has commenced ground EM surveys at its 100-per-cent-owned Broach Lake property, where F3 intersected 67.0-metre total composite radioactivity at the Tetra zone (see news release dated Aug. 5, 2025). A uniquely designed 65 kilometres of stepwise moving loop electromagnetic (SWMLEM) surveying will be completed initially on a priority grid covering the mineralized conductive zone between the Tetra zone and historic drill hole PAT-16-002, located 1.2 km to the southeast, where maiden geochemical analysis by F3 returned 423 ppm (parts per million) uranium over 0.5 metre (see news release dated July 21, 2025). This survey will give greater confidence in locating the Tetra conductor and reduce the number of drill holes required to target along stepouts.

Sam Hartmann, vice-president of exploration, commented:

"Earlier this year (see NR February 11, 2025) we announced the commencement of our exploration program at the Patterson Lake project, including the Broach Lake project with a 41 line km moving-loop time-domain (MLTDEM) ground geophysics survey which was a first-pass exploratory survey. By March (see NR March 18, 2025) we intersected the first anomalous radioactivity with PLN25-202 which encountered six distinct zones of anomalous radioactivity over a 90 m down hole interval. In April (see NR April 15, 2025) we discovered the Tetra zone with PLN25-205 which returned a 1.0 m high-grade interval with 2.50 per cent U3O8 within a 22.5 m mineralized main interval averaging 0.26 per cent U3O8 from 384.5 m to 407.0 m.

"Today we announce a new stepwise moving-loop electromagnetic (SWMLEM) survey designed to cover the highest-priority section of the Tetra conductor over a 1,600 m strike length including the approximately 1,200 m between the Tetra zone and PAT-16-002. It aims to detect subtle basement-hosted conductors through highly conductive overburden. This tighter survey based on 200 m spaced lines will give us greater control over local conductor locations and reduce exploration drilling."

About the Patterson Lake North project

The company's 42,961-hectare 100-per-cent-owned Patterson Lake North project (PLN) is located just within the southwestern 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 23 kilometres 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 13 km 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, PGeo, president and chief operating officer of F3 Uranium, a qualified person. Mr. Ashley has reviewed and approved the data disclosed.

About F3 Uranium Corp.

F3 is a uranium exploration company, focusing on the high-grade JR zone and new Tetra zone discovery 13 kilometres to the south in the PW area on its Patterson Lake North (PLN) project in the Western Athabasca basin. F3 currently has three 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.

We seek Safe Harbor.