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F3 - Hits 13.7% U3O8 Over 2.5m Within 5.5% Over 7.5m at JR Engaged SLR for Mineral Resource Estimate

Drill Results

F3 - Hits 13.7% U3O8 Over 2.5m Within 5.5%

Over 7.5m at JR

Engaged SLR for Mineral Resource Estimate

Kelowna, British Columbia--(Newsfile Corp. - July 16, 2025) -

F3 Uranium Corp

(TSXV: FUU)

(OTCQB: FUUFF)

("

F3

" or "

the Company

") is pleased to announce the final assay results of 2024 JR

Zone drilling including drillhole PLN24-184 (See NR October 29, 2024) which returned

13.0m of 3.2%

U

3

O

8

, including a high grade core with

2.5m of 13.7% U

3

O

8

. Exploration geochemical results are

highlighted by PLN24-187 which targeted and intersected the A1 Extension 3.2km along strike from JR

Zone, an interpreted continuation of the A1 Main Shear on the southeast side of the Harrison Fault and

which intersected strongly elevated uranium values averaging 70ppm over 8.5m, with a peak of 244ppm

at 549.0m.

Elevated uranium values of 111ppm U over 5.5m between 193.5 - 199.0m in PLN14-019 helped

prioritize the A1 conductor which hosts the JR Zone. Continued anomalous intersects across the

Harrison fault, A1 Extension and B1 areas highlight the complex geologic and structural setting which still

hosts numerous high priority untested targets.

F3 is also pleased to announce the engagement of SLR International Corporation ("SLR") to complete

the maiden resource estimate for the Company. SLR brings deep familiarity with basement hosted

uranium deposit modeling and resource estimation and is qualified to prepare a NI 43-101 Technical

Report on the Patterson Lake North Project, targeted for completion in Q4 2025.

2024 JR Zone Highlights:

PLN24-184

(line 105S):

13.0m @ 3.2% U

3

O

8

(228.5m to 241.5m), including:

2.5 @ 13.7% U

3

O

8

(238.0m to 240.5m), further including:

0.5m @ 26.3% U

3

O

8

(238.5m to 239.0m)

PLN24-185

(line 025S):

11.5m @ 2.7% U

3

O

8

(219.5m to 231.0m), including:

3.5m

@ 8.2% U

3

O

8

(222.5m to 226.0m), further including:

1.0m @ 17.7% U

3

O

8

(223.0m to 224.0m)

2024 Exploration Highlights:

PLN24-178

(line 2535S):

2.0m @ 94ppm U (446.5m to 448.5m), including:

0.5m @ 128ppm U (446.5m to 447.0m)

PLN24-179

(line 4245S):

0.5m @ 119ppm U (426.0m to 426.5m)

PLN24-187

(line 3240S):

8.5m @ 70ppm U (545.0m to 553.5m), including:

1.5m @ 198ppm U (549.0m to 550.5m), including:

0.5m @ 244ppm U (549.0m to 549.5m)

Sam Hartmann, Vice President Exploration, commented:

"F3 Uranium is pleased to report the completion of the 2024 assay results for the JR Zone drilling

program. These results will be integrated into our dataset to support the maiden mineral resource

estimate, targeted for completion in Q4 2025. This milestone represents a significant achievement for

F3 Uranium, advancing the JR Zone from discovery to a defined resource.

During this time, we will

continue drilling at our new discovery - the Tetra Zone just 12km to the south."

Table 1. Drill Hole Summary and Uranium Assay Results

Collar Information

Assay Results

Hole ID

Grid Line

Easting

Northing

Elevation

Azi

Dip

From (m)

To

(m)

Interval (m)

U

3

O

8

weight

%

PLN24-169

2820S

589486

6408554

530

113

-70

B1 Exploration; no mineralization >0.05

PLN24-170

150S

587940

6410726

546

58

-85

A1 Exploration; no mineralization >0.05

PLN24-171

3345S

589633

6408013

535

55

-66

B1 Exploration; no mineralization >0.05

PLN24-172

3780S

590006

6407749

539

56

-65

B1 Exploration; no mineralization >0.05

PLN24-173

2850S

589230

6408338

537

55

-67

A1 Exploration; no mineralization >0.05

PLN24-174

3075S

589596

6408116

533

15

-58

B1 Exploration; no mineralization >0.05

PLN24-175

4245S

590243

6407348

543

56

-67

B1 Exploration; no mineralization >0.05

PLN24-177

70S

587813

6410743

547

56

-81

199.5

212.0

12.50

0.17

inc.

210.5

211.0

0.50

1.29

PLN24-178

2535S

589250

6408365

538

54

-67

B1 Exploration; no mineralization >0.05

PLN24-179

4245S

590178

6407292

542

54

-64

B1 Exploration; no mineralization >0.05

PLN24-180

1125S

588192

6409710

542

54

-60

A1 Exploration; no mineralization >0.05

PLN24-181

2880S

589301

6408383

540

79

-65

B1 Exploration; no mineralization >0.05

PLN24-182

5280S

590644

6406355

539

54

-72

B1 Exploration; no mineralization >0.05

PLN24-183

3240S

589414

6407983

530

54

-59

B1 Exploration; no mineralization >0.05

PLN24-184

105S

587753

6410654

545

53

-62

228.5

238.0

9.50

0.73

238.0

240.5

2.50

13.72

inc.

238.0

239.0

1.00

21.65

240.5

241.5

1.00

0.05

244.5

245.0

0.50

0.05

PLN24-185

025S

587737

6410739

545

53

-66

219.5

222.5

3.00

0.19

222.5

226.0

3.50

8.16

inc.

223.0

224.0

1.00

17.70

226.0

231.0

5.00

0.34

PLN24-186

035S

587810

6410777

546

51

-79

187.0

187.5

0.50

0.08

189.5

197.0

7.50

0.33

PLN24-187

3240S

589410

6407980

531

54

-65

B1 Exploration; no mineralization >0.05

PLN24-188

4140S

590100

6407369

544

54

-70

B1 Exploration; no mineralization >0.05

PLN24-189

3450S

589589

6407853

540

54

-70

B1 Exploration; no mineralization >0.05

PLN24-190

3360S

589752

6408087

531

54

-66

B1 Exploration; no mineralization >0.05

PLN24-191

2955S

589548

6408433

531

232

-68

B1 Exploration; no mineralization >0.05

PLN24-192

2895S

589364

6408432

537

94

-66

B1 Exploration; no mineralization >0.05

PLN24-193

3015S

589469

6408464

530

109

-67

B1 Exploration; no mineralization >0.05

PLN24-194

2865S

589594

6408578

532

65

-66

B1 Exploration; no mineralization >0.05

Map 1. JR Zone Drill Holes with Uranium Results

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8110/258906_e3ccfb97a473a8ae_002full.jpg

Map 2. Exploration Highlights

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8110/258906_e3ccfb97a473a8ae_003full.jpg

Samples from the drill core are split into half sections on site. Where possible, samples are

standardized at 0.5m down-hole intervals. One-half of the split sample is sent to SRC Geoanalytical

Laboratories (an SCC ISO/IEC 17025: 2005 Accredited Facility) in Saskatoon, SK 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 % U

3

O

8

as

"high grade" and results greater than 20.0 weight % U

3

O

8

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.

About F3 Uranium Corp.:

F3 is a uranium exploration company, focusing on the high-grade JR Zone and new Tetra Zone

discovery 12km 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:

[email protected]

ON BEHALF OF THE BOARD

"Dev Randhawa"

Dev Randhawa, CEO

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/258906