Mr. Dev Randhawa reports

F3 TARGETS NEW DISCOVERIES IN 2026 SUMMER EXPLORATION PROGRAM ACROSS PLN

F3 Uranium Corp. has provided an update on its 2026 summer exploration program across its 100-per-cent-owned Patterson Lake North project (PLN) in the Western Athabasca basin. Building on the momentum of the company's discoveries at the JR and Tetra zones, the program will advance a number of new target areas across the project's three properties -- Patterson Lake North, Minto and Broach -- while the 3-D-DCIP and resistivity geophysical survey now under way directly over the Tetra zone continues (see news release June 2, 2026).

The PLN project is one of the largest contiguous land packages held by a single explorer along the prospective southwestern margin of the Athabasca basin -- host to Paladin's Triple R and NexGen Energy's Arrow deposits. While the JR and Tetra zones remain core to the company's activity, continuing compilation, and reinterpretation of historic and recently acquired geophysical, geological, and geochemical data sets across the broader project has advanced several additional trends to the drill-target stage.

The 2026 summer program is designed to systematically advance these new target areas in parallel with the continued evaluation of the company's flagship discoveries. Drilling is expected to commence in early July, 2026, and will initially comprise approximately 4,000 metres.

Sam Hartmann, vice-president, exploration, commented:

"Our 2026 summer program reflects the systematic, land-package-wide approach that has driven our discoveries at the JR and Tetra zones. The Tetra zone was a game-changing discovery -- the first in the Clearwater domain, an area long overlooked because of its high magnetic profile and historically weak conductor response. It showed that by applying new deposit models where others weren't looking, F3 can make discoveries in unexpected places. We are now bringing that same first-mover mind set across the project, integrating a combination of geophysical methods -- magnetotellurics, resistivity, ground EM and gravity, tailored to each target -- to build a deep pipeline of drill-ready targets. This season we are advancing the most prospective of them while continuing to unlock the significant untested potential that remains across all three properties."

Broach property

At the 19,022-hectare Broach property -- host to the Tetra zone discovery -- the 3-D-DCIP and resistivity survey currently under way is expected to refine drill targeting directly over the Tetra structure (see news release June 2, 2026). Summer targeting on the Broach property is concentrated in two areas -- the Patterson West Area surrounding the Tetra zone and the Broach Lake South (BRS) area.

Patterson West area

Surrounding the Tetra zone discovery, the Patterson West area hosts numerous targets defined by EM conductors and gravity low anomalies that exhibit geophysical signatures similar to those at the Tetra zone, of which four have been prioritized for drill testing under the 2026 summer program. F3 sampling of historic drill core in the area returned 423 ppm (parts per million) U (uranium) and identified intense bleaching, and these targets remain untested by follow-up drilling.

Broach Lake South (BRS) area

The Broach Lake South (BRS) area hosts multiple drill-ready targets. These include newly reinterpreted, steeply dipping conductors on the southern end believed to be the continuation of the Carter trend, as well as follow-up to the 2022 drilling, which intersected graphite-rich faults, strong alteration and prospective lead isotopes noted in follow-up sampling.

Patterson Lake North property

The 4,074-hectare Patterson Lake North property hosts the high-grade JR zone uranium discovery, located approximately 23 km northwest of Paladin's Triple R deposit. As the cornerstone of the PLN project, the property remains central to the company's exploration strategy. Continuing compilation and geophysical interpretation continue to develop several regional trends -- including targets in the Harrison area and along the B1 conductor -- toward the drill-ready stage. Summer work will focus on advancing this regional target generation and integrating recently acquired data sets, positioning these trends for drill testing as the program progresses.

Minto property

The 19,864-hectare Minto property hosts priority conductive corridors and geophysical anomalies along trend from the JR zone. Notably the A4 trend, which spans nearly seven kilometres and runs parallel to and shows a similar EM response to the A1 conductor that hosts the JR zone. Summer work will advance the target area around historic drill hole PLN14-021:

• Follow-up drilling planned near drill hole PLN14-021 (drilled 2014), which intersected anomalous uranium (up to 44 ppm U in basement) and 698 ppm boron directly above the Athabasca unconformity at approximately 413 m, in a corridor parallel to the A1 conductor near the Harrison fault.
• Since then, F3 has flown a magnetotelluric (MT) survey and completed ground EM over the target area.
• The MT survey identified a significant resistivity low system, hosting newly defined ground conductors.
• These results upgrade the corridor to a drill-ready target for the 2026 summer program.

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 km 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.

Marketing agreement: Delray Capital Markets Group

F3 Uranium also announces that it has entered into an agreement with Delray Capital Markets Group, a Florida corporation doing business as Delray Capital Markets Group, an investor relations firm and media company, to provide investor relations, marketing, media and capital markets awareness services to the company.

The agreement is for an initial three-month term beginning July 1, 2026, for a fee of $200,000 (U.S.). In addition, subject to TSX Venture Exchange approval, the company and Delray CMG may mutually agree to extend the agreement for a further three-month period for total consideration of up to $150,000 (U.S.). To the best of the company's knowledge, Delray CMG does not own, directly or indirectly, any equity securities, options, warrants, convertible securities or other financial instruments of the company, nor does Delray CMG have any right to acquire any such interest. Delray CMG and the company are arm's length parties.

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.

This news release also refers to neighbouring 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 neighbouring properties is not necessarily indicative of mineralization on the PLN project.

For additional information on the PLN project, including the current mineral resource estimate for F3 Uranium's JR zone uranium deposit, please refer to the report titled "NI 43-101 Technical Report, Patterson Lake North Project, Northern Saskatchewan, Canada" dated Jan. 20, 2026, available at SEDAR+.

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.

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