NYSE.A: JAGU

Jaguar Uranium Reports Preliminary Surface Sampling Results from Huemul Uranium-Copper-Vanadium Project

Channel and rock chip samples from areas of visible uranium-copper-vanadium mineralization observed at surface returned preliminary assay results, including values above the upper detection limit of 25,000 ppm for uranium and copper, with over-limit reanalysis pending, as well as maximum reported values of 708 g/t silver and 1.27% vanadium1.

  • Certain samples exceeded the upper detection limit of the analytical method for U and Cu; final over-limit results are pending; therefore, the reported grades should not be considered final.
  • Samples were taken from areas of visible uranium-copper-vanadium mineralization observed at surface, in areas where historical records report average head grades of 0.21% uranium, 2.0% copper and 0.11% vanadium2.
  • A potential 4-kilometre copper trend was identified, and historic mine dumps were sampled for first time.

TORONTO, July 20, 2026 /CNW/ — Jaguar Uranium Corp. (NYSE-AM: JAGU) (“Jaguar”) is pleased to announce preliminary assay results from its initial rock sampling program at the Huemul Uranium-Copper-Vanadium (U-Cu-V) Project, located in Malargüe, Mendoza Province, Argentina. The two-week field campaign delivered encouraging early observations, consistent with previously documented mineralization and indicated potential new mineralized areas across the more than 27,000-hectare district-scale project.

Huemul Project Target and Surface Sampling Locations

1 Because sampling was selective and targeted areas of visible mineralization, the results may be biased high and should not be considered representative of grade distribution, continuity or mineralization across the Huemul Project.
2 Visible uranium-copper-vanadium-bearing mineralization has been observed at surface at certain locations. These observations are qualitative in nature. Historical records for the Huemul project report average head grades of approximately 0.21% uranium, 2.0% copper and 0.11% vanadium; however, the Company has not verified these historical results, and there is no assurance that current mineralization is consistent with such historical grades.

Sampling Program

Jaguar submitted 200 samples, consisting of 188 channel and rock chip samples with 6 Blanks and 6 Duplicates, spanning the project’s most prospective targets. Field observations were generally consistent with the presence of mineralization described in historical reports, particularly around the former Huemul mine, as described previously here.

Samples were collected from eight target areas, namely, Huemul Min, Agua Botada, Uryco, Rosa, Vega Larga, Black Zone, Cerro Mirano and Lucy (Figure 1). Most notably, sampling of strike extensions at the Uryco/Rosa zone identified a potential 4-kilometre trend of copper mineralization observed in outcrop, consistent with the scale of the system suggested by historical work.

Targeted sampling included outcrop and subcrop float, select, chip, composite and channel samples collected from areas of visible surface mineralization. Since visible mineralization was targeted, the results may be biased high and should not be considered representative of grade distribution across the project. Channel samples were collected over intervals ranging from 50 cm to 280 cm. Samples were packaged and sealed at the project site by Jaguar geologist and transported to ALS in Mendoza, Argentina for analysis using sodium peroxide decomposition method ME-MS89L™. ALS Mendoza is a full-service laboratory and is ISO/IEC 17025 accredited sample preparation and geochemical analysis. ALS Mendoza is independent of Jaguar.

Jaguar inserted six blanks and six duplicate samples as part of its QAQC program. Blank material performed satisfactorily, but two of the duplicates did not compare well. These samples will be reanalysed, but the QP considers the current preliminary disclosure suitable notwithstanding those discrepancies. The results disclosed in this news release are preliminary exploration results and do not establish the extent, continuity, grade, tonnage, economic significance, mineral resources or mineral reserves of the Huemul Project.

Selected significant results from the surface sampling with U grades greater than 100 ppm are presented in Table 1 below. The 100 ppm U reporting threshold used for Table 1 is an exploration reporting threshold selected by the Company and should not be interpreted as a cut-off grade, economic threshold, or indication of mineral resources or mineral reserves. A full tabulation of the sample coordinates, sample types and assay results is reported in Appendix 1.

Table 1 Preliminary significant results from surface sampling (U greater than 100 ppm) – not final

Sample IDAg (ppm)Cu (ppm)U (ppm)V (ppm)Sample IDAg (ppm)Cu (ppm)U (ppm)V (ppm)
4243112680107274304188080654296
4245106336013254343061333201165353
424643816020904543089368019151400
424795230001554543096247402880154
42481316850104384312112300309167
4252157301125043132510250889147
4255118020275147431921013950>2500012700
425764>250002721094321<58016384
42741441802230455432471310242314
4275142750201146433267930529271
42761669203031264334381640014151
427731294089702000433562>2500013954
427832123505470388043361817500168102
42847081460042102780433737214350102377
428568181001533734340635157016851005
42907983902270090104344<5>2500012345
42911052720207007070434813>2500020238
4292451710205007200435812>2500016159
4293172290840036504361192000027958
42941230505521055436331998013453
42955247011773543877717024133
429613320400143507270439920513550725150
429721241701525053304401151160011049
42988522801830078404402231055010249
42995770165366440538>2500032051
43006940116152440821>2500024190
43018750170734411<575026345
430225124008363244414<598023438
430391940557784421361935010664

Notes:

  1. ppm = g/t
  2. 10,000 ppm = 1.0%
  3. Values reported as ‘>25,000 ppm’ exceed the upper detection limit and are subject to over-limit reanalysis; final values may differ.

Over-limit samples for uranium and copper (indicated >25000) are to be re-analysed by ALS using XRF for base metal ores by fusion (ME-XRF15b™) and will be reported once they become available.

Rock chip and channel samples are selective by nature and may not be representative of mineralization across the property. Reported sample results should be considered preliminary exploration results and do not establish the extent, continuity, or economic significance of mineralization.

Data Verification

The QP’s review of the sampling, analytical and QA/QC information disclosed in this news release was limited to a review of information provided by the Company and its consultants, including sample locations, sample descriptions, analytical certificates, analytical methods and QA/QC results. The QP has not completed a current site visit to the Huemul Project and has not independently observed or physically verified the sampling procedures, sample locations, sample security or chain-of-custody procedures. The QP has not independently verified the historical production, historical grade or historical exploration information referenced in this news release. The QP’s review is subject to the limitations described herein, including the selective nature of the samples, pending over-limit reanalysis for certain uranium and copper results, and pending follow-up review of duplicate samples that did not compare well.

A District with Documented Historical Production

The Huemul Project is anchored by Argentina’s first-ever producing uranium mine, commissioned in 1955 and operated continuously until 1975 by the Comisión Nacional de Energía Atómica (CNEA). Historical records report that approximately 130,000 tonnes of mineralized material, historically described as ore, were processed at the Malargüe plant, with reported average head grades of 0.21% uranium, 2.0% copper and 0.11% vanadium (source: Guillermo Rojas, 1999. Distrito Uranìfero Pampa Amarilla, Mendoza. En Recursos Minerales de la Republica Argentina. Pag.1135-1140). The Company has not independently verified the historical production records or historical head-grade information, and such information should not be interpreted as current exploration results, a mineral resource estimate, a mineral reserve estimate or evidence of current economic viability.

The project hosts uranium-copper-vanadium mineralization in a classic sandstone-hosted deposit setting. The broader Malargüe Mining District remains largely untested by modern exploration methods. Based on the presence of a former producing mine, historical exploration data, and the extent of the Company’s land package, management believes the project warrants further systematic exploration.

Management Commentary

“The visible mineralization we observed in outcrop and in the historic mine dumps is generally consistent with descriptions in historical records that first drew us to Huemul, and the potential 4-kilometre copper trend at Uryco adds district-scale uranium and copper potential to the asset. We look forward to receiving further assay results to validate these observations as we plan our next phase of work, including a targeted drill program to further understand and potentially expand the Huemul project.” said Steven Gold, President & Chief Executive Officer

Cautionary Note

The Huemul Project is an exploration-stage property. No mineral resource or mineral reserve estimate has been prepared for the Huemul Project under National Instrument 43-101 — Standards of Disclosure for Mineral Projects (“NI 43-101“) or Subpart 1300 of Regulation S-K. The surface sampling results disclosed in this news release are exploration results only and should not be interpreted as establishing the presence of mineral resources or mineral reserves. Rock chip and channel samples are selective by nature and may not be representative of mineralization across the property.

Historical production, grade and exploration information referenced in this news release is historical in nature and has not been independently verified by the Company or by a qualified person under NI 43-101 or Subpart 1300 of Regulation S-K. The Company is not treating this information as current mineral resources, mineral reserves, or current exploration results. The information is considered relevant because it indicates the presence of uranium-copper-vanadium mineralization on the property, but it should not be relied upon until confirmed by additional exploration work.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and approved by George van der Walt, Pr.Sci.Nat., an independent Principal Consultant with The MSA Group (Pty) Ltd., who is a qualified person under NI 43-101 and subpart 1300 of Regulation S-K. Mr. van der Walt has reviewed the sampling, analytical and QA/QC information disclosed in this news release on the basis of information provided by the Company and its consultants and has approved the technical disclosure in the form and context in which it appears. Mr. van der Walt has not completed a current site visit to the Huemul Project and has not independently observed or physically verified the sampling procedures or sample chain of custody.

About Jaguar Uranium

Jaguar Uranium Corp. is a South America-focused uranium exploration company advancing a portfolio of prospective brownfield projects across Argentina and Colombia. In Argentina, Jaguar is advancing the Laguna Salada Project in Chubut Province and the historic Huemul uranium mine in Mendoza Province. Anchored by a former producing mine, a historic uranium district and exploration projects supported by historical drilling, the Company is focused on advancing and expanding uranium opportunities across the region. The Company’s Berlin Project in Caldas Province, Colombia is a district-scale, sedimentary-hosted polymetallic system historically reported to host uranium alongside rare earth elements, vanadium, nickel, phosphate, molybdenum, rhenium and zinc. Jaguar completed a $25 million initial public offering on NYSE American in February 2026 and is led by an experienced team with backgrounds in exploration, permitting, project development and mining finance in South America.

www.jaguaruranium.com

Forward Looking Statements

This news release contains “forward-looking statements” within the meaning of applicable U.S. and Canadian securities laws. Forward-looking statements are statements that are not historical facts and include, without limitation, statements regarding: the timing and results of assay data; the interpretation of exploration results; the potential extent, continuity, and significance of observed mineralization; the identification of prospective target areas; the potential for discovery; planned or future exploration programs; and the Company’s expectations regarding the Huemul Project and the broader Malargüe district.

Forward-looking statements are based on a number of material assumptions, including, but not limited to: the accuracy of historical data; the reliability of sampling and field observations; the completion of over-limit reanalysis and any duplicate-sample follow-up without material adverse changes to the preliminary interpretation; the continuity of mineralization observed at surface; the receipt of assay results consistent with expectations; the availability of financing and personnel; the availability of equipment, laboratory capacity, property access and required permits; and the Company’s ability to execute its exploration plans as currently contemplated.

Forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause actual results to differ materially from those expressed or implied by such statements. These risks and uncertainties include, among others: the risk that assay results or over-limit reanalysis results do not confirm preliminary observations; risks relating to the interpretation of exploration results; risks that duplicate-sample reanalysis or additional QA/QC review may affect the interpretation of results; the possibility that mineralization is not continuous or of economic grade; risks associated with early-stage exploration properties; the selective nature of rock chip, channel, composite, select and mine-dump samples; reliance on historical data that may be incomplete or inaccurate; commodity price volatility; permitting and regulatory risks; operational and technical risks; and general economic, market and industry conditions.

Forward-looking statements speak only as of the date of this news release. Except as required by applicable securities laws, the Company undertakes no obligation to update or revise any forward-looking statements to reflect events or circumstances after the date of this release or to reflect the occurrence of unanticipated events.

APPENDIX 1: Tabulation of preliminary sample assay results

Sample IDEastingNorthingSample TypeChannel
Length
(cm)
Channel
Orientation
(°)
Ag (ppm)Cu (ppm)U (ppm)V (ppm)
422624406366042968Outcrop Chip<520360
422724407036042691Subcrop Channel160250<520172
422824407036042691Subcrop Channel80250<5301177
422924407186042793Outcrop Channel100<5<20387
423024398376043204Outcrop Channel140250<5<20210
423124397566042929Outcrop Channel1200<5<20148
423224401926043308Outcrop Composite<5<20414
423324401836042783Outcrop Channel200270<5<20135
423424401766042580Outcrop Channel120260<520236
423524404286042411Outcrop Composite<5<20238
423624404466042469Outcrop Channel110280<5<20124
423724404936042537Outcrop Composite<5<20161
423824404366042855Outcrop Composite<5<20250
423924407596042423Outcrop Channel80270<5301163
424024406566042568Outcrop Composite<520243
424124407436042595Outcrop Channel80270<5301183
424224401966041287Mine Dump1913508629
424324401966041287Mine Dump11268010727
424424402106041262Mine Dump150280<512205840
424524402056041268Mine Dump200151063360132543
424624402286041289Mine Dump438160209045
424724403106041673Subcrop Composite952300015545
424824403236041677Mine Dump131685010438
424924402476041822Outcrop Composite<590483
425024402446041754Outcrop Composite<540254
425124401796041612Outcrop Composite<550387
425224402086041110Mine Dump1573011250
425324402476041081Outcrop Channel120280<520436
425424402476041081Outcrop Channel80280<520775
425524402406041074Outcrop Channel60270118020275147
425724402406041074Outcrop Channel11027064>25000272109
425924402266041078Outcrop Channel70300<5901666
426024402266041078Outcrop Channel80300<590948
426124402336041081Outcrop Channel100300<52803133
426224402146041079Outcrop Composite<550682
426324402146041079Outcrop Channel80280<560857
426424402026041075Outcrop Channel120280<5201249
426524402026041075Outcrop Channel100280<5140631
426624401976041068Outcrop Channel90280514006541
426724401976041068Outcrop Channel50270<51305104
426824401976041068Outcrop Channel70270<550441
426924401046041042Outcrop Composite<520356
427024400736040983Outcrop Channel120280<520367
427124401076040952Outcrop Composite<520252
427224399536040953Outcrop Channel120<5<20528
427324399916040998Outcrop Composite<5<20547
427424400196040663Mine Dump1501441802230455
427524400326040624Mine Dump180142750201146
427624399816040684Mine Dump170166920303126
427724399776040682Mine Dump31294089702000
427824399706040697Mine Dump321235054703880
427924400416040718Outcrop Composite<51005766
428024400596040708Outcrop Channel23030<558045124
428124400616040715Outcrop Channel200301782004399
428224400606040718Outcrop Channel2000281145045111
428324400636040718Outcrop Channel200030815074418
428424400646040722Outcrop Channel20007081460042102780
428524400626040724Outcrop Channel20006818100153373
428824400626040720Outcrop Channel200033686055114
428924400626040726Outcrop Channel200024925091117
429024400616040729Outcrop Channel2000798390227009010
429124400616040730Outcrop Channel20001052720207007070
429224400606040732Outcrop Channel2000451710205007200
429324400616040735Outcrop Channel200017229084003650
429424400636040735Outcrop Channel20001230505521055
429524400636040739Outcrop Channel200052470117735
429624400616040742Outcrop Channel200013320400143507270
429724400626040744Outcrop Channel20002124170152505330
429824400666040748Outcrop Channel18090852280183007840
429924400866040746Subcrop Composite5770165366
430024399696040765Mine Dump150906940116152
430124401496040367Mine Dump20060875017073
430224401276040380Not recorded2512400836324
430324401056040400Mine Dump200609194055778
430424400896040433Mine Dump2000188080654296
430524400676040431Mine Dump2000<532057104
430624400506040415Mine Dump20001333201165353
430724400486040411Mine Dump2000538063103
430824400266040427Mine Dump2001309368019151400
430924401026040525Mine Dump6247402880154
431024400596040485Mine Dump200120<53406586
431124400496040444Mine Dump200290<55705366
431224400066040439Mine Dump200112300309167
431324400156040444Mine Dump2510250889147
431424400236040479Mine Dump200110<51102262
431524400396040509Mine Dump200170<55809374
431824400796040521Mine Dump200150<52502786
431924400656040738Outcrop Composite21013950>2500012700
432024402416040636Subcrop Composite<5809368
432124402936040594Outcrop Channel28090<58016384
432224402036040235Outcrop Composite<53901840
432324399406040265Outcrop Composite<580948
432424401026040482Mine Dump20020071310242314
432524400506039769Outcrop Composite8208004548
432624452636035159Outcrop Composite<560439
432724452706035090Outcrop Composite26.02603298
432824452476035007Outcrop Composite<5>250005275
432924452506035005Outcrop Composite<54901145
433024487076035962Outcrop Composite3544905447
433124487116035963Outcrop Composite1714003736
433224440036037410Mine Dump67930529271
433324440006037374Outcrop Composite15202005238
433424498186037854Outcrop Select381640014151
433524497406037990Outcrop Composite62>2500013954
433624496906038031Mine Dump1817500168102
433724489986038428Outcrop Channel12027037214350102377
433824490156038412Outcrop Channel11077590646
433924448076036267Float Select<570633
434024448156036263Subcrop Select635157016851005
434124450766036272Outcrop Channel150180<5146006235
434224450806036264Outcrop Channel70180<531003074
434324450836036264Outcrop Channel100180<5130435
434424450906036269Mine Dump2000<5>2500012345
434624451816036252Outcrop Channel100180<54330441
434724452496036248Subcrop Channel200240<511750329
434824460026036256Outcrop Channel16013>2500020238
435024459616036251Outcrop Composite8105003933
435124459176036262Outcrop Channel180110<597602232
435224458526036280Outcrop Composite<57220641
435324457266036259Outcrop Channel100180<5139031101
435424457236036260Outcrop Channel150180<536201032
435524457206036263Outcrop Channel200180<55330733
435624455236036252Outcrop Channel130240<53830325
435724454456036254Outcrop Composite<57340427
435824454586036301Outcrop Channel18018012>2500016159
435924464536036262Outcrop Composite10>250007946
436024465656036305Outcrop Channel120180992605843
436124465446036304Outcrop Channel110180192000027958
436224465196036288Outcrop Channel1701807159507835
436324463496036247Mine Dump20012031998013453
436424463116036238Outcrop Composite<550701829
436524462016036261Outcrop Channel100<5>2500022111
436624470916036238Outcrop Channel150180<5>250002746
436724470786036240Outcrop Channel150180<583102547
436824467596036239Outcrop Composite<56010625
436924466396036267Outcrop Composite<583601832
437024467986036260Outcrop Composite<546023100
437124471956036214Outcrop Composite<51610635
437224479036035889Outcrop Channel120120<5235002486
437324478246035915Outcrop Composite<53390448
437424482676035877Subcrop Select5220006350
437524482876035870Subcrop Select5>250006043
437824463526035774Outcrop Channel15050<555903056
437924463476035763Outcrop Channel30<54660547
438024461266035620Outcrop Composite<559302246
438124460326035350Outcrop Composite<5403031
438224461466035400Outcrop Channel12040<53801954
438324454806035148Outcrop Composite1051325060112
438424454906035156Outcrop Composite<523700944
438524457746035357Outcrop Composite2421705994
438624457706035347Float Select856906242
438724457726035252Outcrop Channel602407717024133
438824455676034864Outcrop Composite136503667
438924455226034904Outcrop Channel16020<5703347
439024455176034897Outcrop Channel20010<5302546
439124475916036155Subcrop Composite721304534
439224482246035655Float Select<5960529
439324481876035678Subcrop Select<5810838
439424481346035690Float Select3942303665
439524481356035316Outcrop Select2656906628
439624445906036319Outcrop Channel17018062159005582
439724446676036313Outcrop Channel80180<570102229
439824447166036295Outcrop Channel170180<588001840
439924445806036321Outcrop Channel17018020513550725150
440024501096037912Outcrop Channel15014010205009430
440124497816037862Outcrop Select151160011049
440224497716037840Outcrop Select231055010249
440324498276037945Float Select27>250007848
440424497826037967Outcrop Channel1001809192009845
440524497806037962Mine Dump20015038>2500032051
440824496516038044Outcrop Composite21>2500024190
440924496676038061Float Select5177504864
441024464126034546Outcrop Select<512905937
441124462026034613Outcrop Channel100200<575026345
441224462026034613Outcrop Channel120200<51509837
441324462026034613Outcrop Select<52101440
441424459086034400Outcrop Channel170310<598023438
441524459086034399Outcrop Channel120310<5502051
441624457856034305Outcrop Channel12090<5702454
441724457916034307Outcrop Channel1100<5601232
441824452046034412Outcrop Channel160160<53930457
441924452096034419Outcrop Channel1400<5690528
442024451176034346Subcrop Composite<53670152
442124450916034329Float Select361935010664
442224450906034328Subcrop Channel10030<51350231
442324476966041535Outcrop Composite17>250002664
442424477296041426Outcrop Composite8>250001256
442524448626043361Outcrop Composite<522000440

Notes:

  1. Coordinates Projection: Campo Inchauspe / Argentina 2 (ellipsoid: International 1924)
  2. ppm = g/t
  3. 10,000 ppm = 1.0%
  4. ALS analytical method was “ME-MS89L™”, which is a sodium peroxide decomposition for complete recovery of lithium, rare earths, and associated trace elements.
  5. “<” indicates below lower limit of detection, “>” indicates above upper limit of detection.

SOURCE Jaguar Uranium

For more information, contact: Steven Gold, Chief Executive Officer, [email protected], +1-416-648-4065