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UraniumX and F4 Complete Murphy Lake Drilling, Define Two Mineralized Trends

Drill Results Corporate Updates

UraniumX and F4 Complete Murphy Lake Drilling, Define Two Mineralized

Trends

SIX OF NINE HOLES RETURN ANOMALOUS RADIOACTIVITY IN EXPANDED 4,092 METRE

CAMPAIGN

VANCOUVER, BC / ACCESS Newswire / July 7, 2026 / UraniumX Discovery Corp. (CSE: STMN)

(OTCQB: STMXF) (FSE: Q7S) (“ UraniumX” or the “ Company”) is pleased to announce that it has

completed its expanded 2026 diamond drill program at its flagship Murphy Lake Property (the “Property”)

in the Athabasca Basin, Saskatchewan. Operator F4 Uranium Corp. (TSXV: FFU) (“F4”) directed the

program, which was fully funded by UraniumX under the existing option agreement through which the

Company is earning up to a 70% interest in the Property.

The program was expanded during execution from an originally planned approximately 2,500 metres to a

completed 4,092 metres in nine drill holes across six target areas. Drilling tested priority target areas

identified by the 2026 moving loop electromagneti c (“MLEM”) survey and defined two distinct trends: the

Murphy Lake North Trend and the Murphy Lake South Trend. Anomalous radioactivity was intersected in

five of the six target areas tested, with six of the nine holes returning elevated radioactivity and multiple

holes displaying strong hydrothermal alteration at the unconformity. Core has been logged and sampled,

and assay results are pending.

The final two holes of the program, ML26-022 and ML26-023, were completed on the Murphy Lake South

Trend at Target Areas 6 and 3 respectively, testing two modelled conductors running parallel to the

conductor that hosts mineralized hole ML22-006 (0.065% U3O8 over 2.5 metres, including 0.242% U3O8

over 0.5 metres; see F3 Uranium Corp. news release dated August 10, 2022). ML26-023 intersected

anomalous radioactivity of up to 400 cps over 0.5 metres in basement rocks just below the unconformity,

with downhole gamma readings greater than 500 cps over a total of 3.2 metres peaking at 2,696.9 cps,

the highest downhole gamma peak reported during the program. ML26-022 encountered limonite

alteration in the sandstone above the unconformity and a weakly altered shear zone in the basement,

with no radioactivity above 300 cps.

Program Highlights

• Program expanded by approximately 64%. The 2026 campaign was expanded from an

originally planned 2,500 metres to a completed 4,092 metres in nine drill holes; the consistently

encouraging results gave the partners the confidence to expand the program across the

Property’s target areas.

• Anomalous radioactivity in five of six target areas. Anomalous radioactivity was intersected

in five of the six target areas drill tested, with six of nine holes returning elevated radioactivity

across two distinct trends, the Murphy Lake North Trend (Target Areas 1 and 2) and the Murphy

Lake South Trend (Target Areas 3, 4, 5 and 6).

• Two trends defined. Drilling defined two mineralized trends on the Property: the North Trend,

where anomalous radioactivity was intersected over more than 330 metres of strike length

including visually identified pitchblende in ML26-015; and the South Trend, now extended to a

strike length of nearly 1.3 kilometres, where ML26- 019A, ML26-021 and ML26 -023 returned

anomalous radioactivity along strike from the 2022 mineralized intercept in hole ML22-006.

• Highest reported downhole response of the program. Hole ML26-023, one of the final two

holes of the program, returned the highest downhole gamma peak reported during the program

at 2,696.9 cps, with anomalous downhole readings greater than 500 cps over a total of 3.2

metres (286.1 to 287.7 metres and 290.6 to 292.2 metres) and handheld readings up to 400

cps in the first basement rocks below the unconformity (Figure 3), complementing ML26-019A's

peak of 2,564 cps (see Technical Disclosure; radiometric readings are preliminary, are not a

measure of uranium grade, and may not correlate with chemical assays).

• Assays are the next catalyst. Core has been logged and sampled; assay results from the

program are anticipated in the second half of 2026.

Results in Context

The Murphy Lake Property is situated in the northeastern Athabasca Basin, approximately 5 km south of

IsoEnergy’s Hurricane deposit and approximately 4 km from Cameco’s La Rocque Lake Uranium Zone.

The Property lies approximately 30 km northwest of Orano’s McClean Lake deposits and uranium

processing facility. The 2026 drill program represents the first systematic test of MLEM-defined conductors

on the Property and has established the presence of two mineralized trends with anomalous radioactivity

and strong hydrothermal alteration.

The North Trend was tested at Target Areas 1 and 2 and the South Trend at Target Areas 3, 4, 5 and 6;

Target Area 6 was the only area tested that did not return radioactivity above 300 cps. The consistency of

anomalous radioactivity across both trends, combined with strong hydrothermal alteration at the

unconformity in multiple holes, is considered highly encouraging by the Company’s geological team.

Drill Program Summary

Table 1. Final Drill Holes ML26-022 and ML26-023: Collar Information and Handheld Spectrometer Results. Composite

parameters: minimum thickness 0.5 m, cps cut off 300 cps, maximum internal dilution 2.0 m. Collar and radiometric

data for holes ML26-015 through ML26-021 were previously reported in the Company’s news releases of June 2, June

9, and June 23, 2026.

Hole ID Section

/ Target

Area

Easting Northing Elev. Azi Dip Interval

(m)

Max

cps

(hand

held)

Downhol

e peak

(cps)

Uncon.

(m)

Total

depth

(m)

Notes

ML26-

022

180N /

TA6

(South)

547858 6492045 436 293 -62 none

>300

cps

<300 326.5 407 Limonite alteration in

sandstone above the

unconformity; weakly

altered shear zone in

basement

ML26-

023

000 /

TA3

(South)

547300 6492036 440 293 -83 288.5 to

289.0

400 2,696.9

(>500 cps

over 3.2

m, 286.1

to 287.7

and 290.6

to 292.2)

288.3 461 Anomalous radioactivity

in first basement below

the unconformity; tested

conductor parallel to the

ML22-006 host

Figure 1. Murphy Lake 2026 Drill Program

Figure 2. Line 180N Cross Section

Figure 3. Line 000 Cross Section

Ground Geophysics

UraniumX intends to fund a follow -up ground geophysical survey program, subject to planning with F4 as

operator, to refine and expand drill targets across the Property. The survey is expected to extend the

coverage of MLEM and other geophysical methods along both the North Trend and South Trend to identify

additional conductive corridors for future drilling. Results would be integrated with the 2026 drill results to

prioritize targets for the next phase of exploration.

Esen Boldkhuu, CEO of UraniumX, commented: “We set out to test both trends and we did exactly that,

significantly exceeding our initial target of 2,500 metres with 4,092 metres completed across nine drill holes.

Two distinct mineralized trends are now defined across the Property: the North Trend with anomalous

radioactivity over more than 330 metres of strike and visible pitchblende in our very first hole, and the South

Trend, now nearly 1.3 kilometres, along strike from the historical intersection in hole ML22-006. ML26-023,

one of our final two holes, returned the highest downhole gamma peak reported during the program at

2,696.9 cps. Anomalous radioactivity in five of the six target areas we tested is exactly the consistency we

wanted to establish before assays, and we look forward to reporting the laboratory results as they are

received.”

Next Steps

Assay results from the 2026 drill program are anticipated in the second half of 2026. Core samples have

been submitted to Saskatchewan Research Council’s Geoanalytical Laboratories in Saskatoon for multi -

element analysis including uranium (U3O8). UraniumX will report assay results promptly upon receipt.

The integration of drill results with new geophysical data will inform the design of the next drill program at

Murphy Lake.

About Murphy Lake

The Murphy Lake Property comprises 609 hectares in the northeastern Athabasca Basin, Saskatchewan.

UraniumX is earning up to a 70% interest in the Property pursuant to an option agreement with F4 Uranium

Corp. (TSXV: FFU). The Property is located approximately 5 km south of IsoEnergy’s Hurricane deposit,

approximately 4 km from Cameco’s La Rocque Lake Uranium Zone, and approximately 30 km northwest

of Orano’s McClean Lake deposits and processing facility.

A National Instrument 43-101 technical report entitled “Technical Report For The Murphy Lake Project, NE

Athabasca Basin, Saskatchewan, Canada”, effective March 20, 2024, prepared by Terra Modelling

Services (Louis F. Fourie, P.Geo.), is available under the Company’s profile on SEDAR+ at

www.sedarplus.ca. No mineral resources have been defined on the Property to date.

References to neighboring properties and deposits, including IsoEnergy’s Hurricane deposit, Cameco’s La

Rocque Lake Uranium Zone, and Orano’s McClean Lake deposits, are provided for geographic context

only. Mineralization on neighboring properties is not necessarily indicative of mineralization on the Murphy

Lake Property. Information concerning neighboring properties is derived from public disclosure by their

respective owners and has not been independently verified by the Company or its Qualified Person.

Technical Disclosure

Handheld spectrometer readings reported in this news release were obtained using a handheld Radiation Solutions

RS-125 spectrometer on drill core. Downhole gamma readings were obtained from a Mount Sopris QL-40GR downhole

natural gamma probe. Radiometric r eadings are a preliminary indication of the presence of radioactive minerals and

are not a direct or reliable measure of uranium grade. Radiometric readings may not correlate with chemical assay

results. Visual identification of mineralization, including pitchblende, is preliminary in nature and is not a substitute for

chemical assay. Assay results from chemical analysis of core samples are required to determine uranium grades and

are pending. Composite parameters applied to handheld spectrometer data: mini mum composite thickness of 0.5 m,

cut off of 300 cps, and maximum internal dilution of 2.0 m. All reported intervals are downhole lengths; true thicknesses

have not been determined.

Qualified Person

The technical information in this news release has been reviewed and approved by Ken Wheatley, P.Geo.,

a Qualified Person as defined by National Instrument 43- 101. Mr. Wheatley has reviewed the information

disclosed by F4 Uranium Corp., as operator of the Murphy Lake program, and in doing so has relied upon

the review and approval of the underlying sampling, radiometric and geological data by Sam Hartmann,

P.Geo., Qualified Person for F4. Chemical assay results for the program are pending and have not yet been

received.

About UraniumX

UraniumX Discovery Corp. is a Canadian-based junior uranium exploration company focused on

advancing uranium properties in Saskatchewan’s Athabasca Basin, one of Canada’s most active uranium

districts. The Company’s flagship Murphy Lake Uranium Property is located in the northeastern

Athabasca Basin, where UraniumX is earning up to a 70% interest through an option agreement with F4

Uranium Corp. UraniumX additionally holds 100% interests in the Zoo Bay and NeoCore uranium

properties, and is advancing a project generator approach across its broader portfolio by optioning non-

core assets while retaining royalties and equity, allowing the Company to concentrate exploration capital

on Murphy Lake.

On Behalf of UraniumX Discovery Corp.

Esen Boldkhuu, CEO

Contact:

UraniumX Discovery Corp.

Esen Boldkhuu, CEO

Email: [email protected]

Telephone: (604) 377-8994

Website: www.uraniumx.ca

Forward Looking Statements

This news release contains “forward looking information” and “forward looking statements” (collectively, “forward

looking statements”) within the meaning of applicable Canadian securities legislation. All statements, other than

statements of historical fact, are forward looking statements and are based on expectations, estimates and projections

as at the date of this news release. Any statement that discusses predictions, expectations, beliefs, plans, projections,

objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, “is

expected”, “anticipates”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes”, or “intends” or variations of

such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be

taken to occur or be achieved) are not statements of historical fact and may be forward looking statements. In this news

release, forward looking statements relate, among other things, to: the anticipated receipt and results of assays from

the 2026 drill program; plans for a ground geophysical survey program; the Company’s ability to earn up to a 70%

interest in the Murphy Lake Property; and the Company’s plans for future exploration.

Forward looking statements are based on reasonable assumptions, estimates, analysis and opinions of management

made in light of its experience and perception of trends, current conditions and expected developments, as well as

other factors that management believes to be relevant and reasonable in the circumstances at the date that such

statements are made, but which may prove to be incorrect. The Company assumes no obligation to update forward

looking statements if circumstances or management’s estimates or opinions should change except as required by

applicable securities laws. Forward looking statements involve known and unknown risks, uncertainties and other

factors that may cause the actual results, performance or achievements of the Company to differ materially from any

future results, performance or achievements expressed or implied by any forward looking statements.

Readers are cautioned not to place undue reliance on forward looking statements. The forward looking statements

contained in this news release are made as of the date hereof and accordingly are subject to change after such date.

The Company disclaims any intent or obligation to update publicly or otherwise revise any forward looking statements,

whether as a result of new information, future events or otherwise, except as may be required by applicable securities

laws.

The CSE has neither approved nor disapproved the contents of this news release. Neither the CSE nor its Market

Regulator (as that term is defined in the policies of the CSE) accepts responsibility for the adequacy or accuracy of this

release.