Guardian Exploration Concludes 2025 Field Work at Sundog Gold Project; Reports Preliminary High Grade Gold Results

(TheNewswire)

Calgary, Alberta – TheNewswire- November 12, 2025 — GuardianExploration Inc. (TSXV: GX) (OTCQB: GXUSF) (Frankfurt: R6B) (“ Guardian ” or the “ Company ”) is pleased to announce the successfulcompletion of its 2025 field program at the Sundog Gold Project in theKivalliq Region of Nunavut and to report significant gold assayresults.

Guardian’s Sundog property spans 94.15 km² (23,265 acres) withinthe central Ennadai–Rankin Archean greenstone belt, a majorNeoarchean supracrustal complex comprising volcaniclastics, maficvolcanic flows, and clastic sedimentary units that were later deformedby Paleoproterozoic shear zones. Guardian’s Sundog and Esker Goldprojects lie within the Central Hearne domain of the Hearne Craton,part of the Western Churchill Province of the Canadian Shield—anarea that preserves one of the world’s largest and most prospectiveArchean greenstone terranes.

The Ennadai–Rankin greenstone belt covers more than 100,000 km²(38,610 sq. miles) and represents both a regionally extensivestratigraphic package and a major gold metallotect. It hosts severalsignificant deposits and gold-bearing systems, most notably theworld-class Meliadine mine, which has produced more than 2 millionounces of gold and contains an additional 7+ million ounces inreserves and resources (Agnico Eagle, 2024).

Additionally, the region includes the historic Cullaton Lake mine,located near the Shear Lake deposit. The Cullaton operation producedapproximately 200,000 ounces of gold during its years of activity inthe early to mid-1980s (1981–1985), further underscoring the goldendowment of the Central Hearne domain.

Within this geological context, the Sundog Gold Project is underlainby Archean volcanic and sedimentary rocks of the Henik Group, whichare unconformably overlain by Hurwitz Group sediments—anarchitecture typical of productive gold-bearing greenstone terranesacross the Canadian Shield.

The 2025 Sundog field program was conducted from September 1 toOctober 7, 2025, comprising geological mapping, structuralinterpretation, trenching, prospecting, and grid establishment acrossthe northern portion of the property. A total of 248 rock samples werecollected within the Sundog project area for analysis, including 86cut channel samples from historic trenches 8, 9B, 10, 17 and 29. Theprogram successfully confirmed multiple gold-bearing structures andexpanded the known footprint of mineralization.

Guardian established a 10-12 person field camp at the Cullaton lakeairstrip, adjacent to the historic Cullaton Lake mine, and located18km SW of the Sundog exploration area, which will be used for planned2026 field work. The airstrip was used in 2025 for landing DC-3 fixedwing aircraft, and historically has served larger cargo planes.

The following reports the results of the Sundog field program. Guardian did not undertake work to establish the existence of anymineral resources or mineral reserves as defined by NationalInstrument 43-101 and none are reported herein.  It is uncertain iffuture exploration will result in definition of mineral resources ormineral reserves.

The Sundog gold occurrence was first discovered in 1962. Subsequentfollow-up work by Abermin Corporation in the Fall of 1987 included aone-month field program of detailed geological mapping of a griddedarea, Very Low-Frequency (“VLF”) ground geophysics, a humusgeochemical survey and a program of excavation and mapping of 38 handtrenches, 27 of which were sampled and assayed.

As part of Guardian’s 2025 field work program all historicaltrenches from 1987 Sundog work programs were relocated with theobjective of confirming historical work and observations, as well asresampling of significant gold-bearing intervals within historicaltrenches. Three new trenches were excavated and sampled (9B, 40 and41) and 9 historical trenches were re-excavated, enlarged, and sampled(8, 9, 10, 11, 12, 17, 29, 30 and 31). Numerous grab and channelsamples returned >10 g/t Au, with peak values up to 34.45 g/t Au.

(c) Sundog traverse, baseline, and sample sites.(d) Samples prepped for transport.

Two significant conclusions from a brief report produced by ScottAnderson, Ph.D., P.Geo., following a site visit from Sept 18 – 22,include:

• Gold-bearing veins at Sundog are mainly hosted in competentmafic–intermediate intrusive sills with weak to negligible ductilefabrics, indicating that competency contrast likely focused quartzveining and mineralization. These sills form shallowly east- andnortheast-dipping structural panels, suggesting exploration potentialat depth to the east or along strike to the north and south.

• Veins are primarily associated with steep NNE–SSW brittle-dominantstructures, but the presence of shallow, low-angle ductile fabrics andhigh-strain zones indicates additional potential for flat-lyingmineralized zones, either within fractured favourable rock sheets oralong flat-lying high-strain zones.

Broad zones of anomalous mineralization (>0.5 g/t Au) have beenidentified in quartz–carbonate–sulphide veining hosted withindominantly metavolcanic rocks and possible fine-grained gabbro sills,as reinterpreted from earlier mapping. Further work in 2026 will berequired to confirm these lithological relationships.

Panning of soils and weathered bedrock from trench and historicalsample sites confirmed the presence of coarse, recoverable gold,consistent with gold reported in prior exploration by AberminCorporation (1987) and subsequent programs by other operators.

(e) Gold grains recovered from Sundog Trenches

Initial grab sampling included 162 samples of quartz vein and maficvolcanic wall rock from float, outcrop and trenches. Significantgrab/chip sample results are presented in Table 1 below. Note thatgrab/chip samples are selective in nature and may not represent theoverall grade or width of mineralization.

Table 1: Significant Grab / Chip Sample Results

Subsequently, a program of saw-cut continuous channel sampling wasundertaken in Trench 8, 9B, 10, 17 and 29 areas.

Table 2: Trenches with Cut Channels

Highlights of channel sampling include:

• Samples from Trenches 8 and 9B, located about 260mnorth of Trench 10, have returned results confirming analyses fromprevious workers and extending gold mineralization to the south ofexcavations by previous workers, almost doubling the strike lengthfrom 8.8m to 15.4m.

• Trench 10, which is centered on the historic 1962 Selco discoveryoutcrop, was re-excavated and enlarged, and has beenextended to the NE and North, compared with previous work. The strikelength of vein-hosted gold mineralization has been extended from 15.5min 1987 to at least 40m following Guardian’s channel samplingprogram.

• Trench 17, located 240m southwest of Trench 10, hasreturned anomalous to low-grade gold in almost every sample collected.Fine gold has been panned by Guardian from weathered bedrock and soilfrom several locations within Trench 17. The area is showing potentialas a lower-grade larger target, supported by possible extensions ofmineralization eastward towards trench 30 and trench 31. This areawill receive extensive follow-up investigation in the 2026 fieldseason.

• Observations and sampling from Trench 30 and 31 confirmthat gold is present in narrow quartz veins crosscutting or parallelto shallow dipping foliation in foliated fine grained mafic volcanicrocks, which has not previously been a focus of exploration.

Table 3: Significant Channel Sampling results

All cut intervals were oriented across the strike ofthe veining. Although most of the sampled veins are near-vertical, thereported intervals represent apparent widths of mineralization. Truethicknesses are not known at this time.

Additional information is available on the companywebsite at guardianex.com .

Graydon Kowal, President and CEO, commented:

“Our 2025 field work at Sundog has delivered encouraging results ina highly fertile gold field. The results confirm the presence ofhigh-grade gold, and visible coarse gold observed in the fieldsupports our interpretation of a nuggety system.  These positiveresults are providing the next level of confidence as we prepare toexpand the exploration area and for drill targeting in 2026.”

Exploration plans for 2026 field work include expansion of thehistorically gridded area, additional geological mapping, soilsampling, trenching, drone geophysics (magnetics and radiometrics),and diamond drilling.

QA/QC Protocols

All rock and channel samples collected during the 2025 program weresecurely bagged, tagged, and shipped with numbered security seals tomaintain full chain-of-custody compliance. The bags were shipped toParagon Analytical Ltd. in Surrey, B.C., a facility accredited underISO/IEC 17025 and ISO 9001 standards.

Guardian’s QA/QC program includes insertion of certified referencematerials (standards), blanks, and field duplicates. Paragon AnalyticsLtd. also follows a QA/QC program of insertion of 350-500g aliquots(the quantity required for effective Photonassay analysis) ofstandards, blanks and duplicate samples into the stream.

All QA/QC data were reviewed and verified by the Company’s QualifiedPerson prior to disclosure.

Historical Analytical Results

The historical 1987 analytical results contained in this news releasewere generated by previous operators (Abermin Corporation) prior tothe implementation of NI 43-101 and have not been independentlyverified by the Company’s Qualified Person. These results areconsidered historical in nature. While the Company considers thehistorical data to be relevant to assessing the exploration potentialof the property, the Company has not completed sufficient work toclassify the historical estimates or analyses as current in accordancewith NI 43-101. The Company is not treating the historical results ascurrent and they should not be relied upon. Future exploration work,including verification sampling, may produce results that differmaterially from those reported herein. Further to that the analyticalmethodologies, sampling procedures, and QA/QC protocols used byprevious operators may not meet current NI 43-101 standards. TheCompany’s Qualified Person has reviewed the information to theextent possible but cannot confirm the reliability or accuracy of thehistorical analytical results.

Analytical Procedure

Guardian’s 2025 samples were analyzed at Paragon Analytical Ltd., anISO-accredited geochemical laboratory based in Surrey, B.C. using thePhotonAssay™ method. All samples are also being submitted formulti-element analysis (4-acid digestion with ICP-MS 48 elementanalysis) by Paragon’s facilities in Reno, Nevada.

PhotonAssay™ is particularly advantageous in coarse-gold systemssuch as Sundog, where small-scale variability in gold distribution(the nugget effect) can cause under- or over-reporting in conventionalassays. To further assess this variability, Guardian has submittedselected high-grade samples for PhotonAssay-to-Extinction, in whichmultiple aliquots of each sample are analyzed independently andaveraged to generate a statistically representative gold value.Results are pending.

All samples returning >0.5 g/t Au are being re-analyzed usingScreen Metallic Fire Assay with AAS finish (Paragon Method FAS-211) toconfirm grade distribution and validate PhotonAssay™ results.Results are pending.

Qualified Person

The technical information in this news release has been reviewed andapproved by Steven Dudka, P.Geo., a Qualified Person as defined underNational Instrument 43-101 – Standards of Disclosure for MineralProjects.

About Guardian Exploration Inc.

Guardian Exploration Inc. is a TSXV-listed company (TSXV: GX) (OTCQB:GXUSF) (Frankfurt: R6B) engaged in oil, gas, and mineral explorationand development. Guardian’s assets include the Sundog and Esker goldprojects in Nunavut’s Kivalliq Region, the Mount Cameron Property inYukon’s Mayo Mining District, and the Kaigani claims in SoutheastAlaska.

FOR FURTHER INFORMATION PLEASE CONTACT:

Graydon Kowal
President & Chief Executive Officer
Tel: (403) 730-6333

Neither the TSX Venture Exchange nor its Regulation Services Provider(as that term is defined in the policies of the TSX Venture Exchange)accepts responsibility for the adequacy or accuracy of this release.

Forward Looking Statements

This press release contains certain forward-looking statements,including, without limitation, statements containing the words"may", "plan", "will","estimate", "continue", "anticipate","intend", "expect", "in the process" andother similar expressions which constitute "forward lookinginformation" within the meaning of applicable securities laws.Forward-looking statements reflect the Company's currentexpectation and assumptions, and are subject to a number of risks anduncertainties that could cause actual results to differ materiallyfrom those anticipated. These forward-looking statements involve risksand uncertainties including, but not limited to, our expectationsregarding mineral exploration. Such statements reflect the currentviews of the Company with respect to future events and are subject tocertain risks and uncertainties and other risks detailed fromtime-to-time in the Company's on-going filings with thesecurities regulatory authorities, which filings can be found atwww.sedar.com. Actual results, events, and performance may differmaterially. Readers are cautioned not to place undue reliance on theseforward-looking statements. The Company undertakes no obligation topublicly update or revise any forward-looking statements either as aresult of new information, future events or otherwise, except asrequired by applicable securities laws.

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