Aeonian releases Koocanusa airborne survey results

Mr. Andy Randell reports AEONIAN CONFIRMS 50-KM COPPER-FERTILE CORRIDOR AT KOOCANUSA; AIRBORNE SURVEY REFINES FOLD TARGETS AND HIGHLIGHTS FEEDER FAULT Aeonian Resources Ltd. has released results from a helicopter-borne magnetic and electromagnetic survey over the western Koocanusa copper project in southeastern British Columbia. The new data strengthen the company's geological modelling of copper mineralization within the upper Creston formation (Revett formation equivalent). This geophysical survey provides compelling structural targets for follow-up: District-scale corridor: Geophysical interpretation outlines a north-northwest-south-southeast corridor approximately 50 kilometres (km) long within the Creston formation that Aeonian considers to be the primary copper-bearing unit. Strong geophysical-geochemical agreement: Magnetic highs show spatial correlation with prior field samples, which graded 0.2 per cent or greater copper collected on surface. These results supporting target ranking objectives. Fold controls on mineralization: Two well-defined regional fold hinges demonstrate associated parasitic "trap" structures; geophysics also expresses a third, previously unknown and untested hinge. Prospective feeder structure: A prominent southwest-to-northeast-trending fault (McGillivray fault) coincident with a magnetic lineament has been interpreted to be a potential fluid upwelling conduit, with associated mineralization inferred to continue beneath the Kitchener unit cover. This may represent an extension of subsurface mineralization mobilized from within the interpreted fault toward the Jake and Yahk East showings, located as far as five kilometres to the north. Next steps: This survey provides Aeonian the final information it needs to plan an effective exploration drill program. Aeonian has obtained all the necessary drill permits to conduct such a program (see the news release dated July 9, 2025). The survey ties together a continuous north-northwest-to-south-southeast structural lithologic corridor within the Creston formation, which is the same stratigraphy that hosts copper mineralization across the Canada-United States border into Montana (within the Revett formation). Where magnetic highs coincide with the company's high-grade surface results, the confidence increases in the belief that the same mineralized horizons observed in Montana persist into Canada along strike, under shallow cover and downplunge of structural folding events. The survey improves detailed resolution of the folding and general geological architecture viewed as a key control required to understand copper grade distribution and confirms the extensive field mapping and sampling completed to date. Two regional hinges with parasitic folds, which can create ideal permeability contrasts and fluid mineralization trap sites, are now better constrained for detailed targeting. A third hinge has been recognized from the survey, located northwest of Jake, which remains to be evaluated in the field. A major southwest-to-northeast-trending fault with a clear magnetic signature is interpreted as a potential feeder structure that focused copper-bearing fluids, with mineralization likely stepping down under the Kitchener formation cap rocks, and dips toward the fault. The Jake showing lies approximately five kilometres (km) from this feature, providing a strong structural linkage for near-term work and target for drill testing. Aeonian holds multiyear drill permits for the Koocanusa project, valid through July, 2028. In accordance with permit conditions, archaeologists from the Shuswap Band completed an archaeological assessment of the Jake Hill target and classified the area as low potential for cultural heritage finds. The wildlife management plan, prepared in collaboration with the Shuswap Band, has also been completed. With these requirements now satisfied, the Jake Hill target is now ready for drill testing. "Today's airborne results pull our western claim block into sharp focus. The survey ties together pockets of mineralization within the Creston formation and line up strongly with our best copper grades at surface. Just as importantly, they tighten two known fold-hinge targets and reveal a third, completely untested hinge -- adding meaningful running room. With a clear set of priorities, multiyear permits in hand and drilling next on the plan, we're excited to advance Koocanusa and continue building value through disciplined exploration," says Andy Randell, president and chief executive officer, Aeonian Resources. With permits in place and targets defined, Aeonian's next step is first-pass drilling at Koocanusa, subject to securing appropriate financing. The company is assessing a range of equity and non-dilutive financing options, and will provide further detail as and when available. No agreements are in place at this time and there can be no assurance that financing will be completed. About Aeonian Resources Ltd. Aeonian Resources is a Canadian mineral exploration company focused on advancing sediment-hosted copper and critical mineral projects in British Columbia. With a strong commitment to environmental responsibility, indigenous engagement and sound science, Aeonian aims to uncover the next generation of sustainable mineral resources. The scientific and technical information in this news release was reviewed and approved by Kristian Whitehead, PGeo, a qualified person as defined by National Instrument 43-101. Mr. Whitehead is not independent of the company. Technical disclosure Survey contractor and dates The helicopter-borne magnetic and time-domain electromagnetic (1TEM) survey was completed by Precision GeoSurveys Inc. between May 22, 2025, and May 26, 2025, over the western portion of the Koocanusa copper project (southeastern British Columbia). Acquisition parameters The program acquired 1,343 line km of high-resolution data across approximately 364 square km on nominal 300-metre (m) traverse spacing (azimuth: 90 degrees/270 degrees) with 3,000 m tie-lines (azimuth: zero degree/180 degrees). The planned drape height was approximately 50 m above ground level (AGL), subject to terrain and safety constraints. Navigation and positioning utilized differential Global Positioning System (GPS). All survey locations are referenced to WGS84/UTM Zone 11N. Processing and products Precision processed the magnetic data set to produce standard and derivative products, including TMI, RMI, RTP, first vertical derivative/CHG, horizontal gradient/CVG, analytic signal and associated grids. The EM data set (1TEM) was processed to provide time-channel decays, stitched databases and conductivity-depth transforms (CDT) presented as sections and plan view maps. Deliverables were supplied as industry standard databases and grids with accompanying logistics/processing documentation. Quality control Contractor QA/QC (quality assurance/quality control) included systematic line-to-line and tie-line levelling and inspection of diurnal and positioning effects on the magnetic data, as well as review of EM system response and noise. Final products were evaluated for line-to-line consistency and continuity across tie-lines prior to interpretation by the company. Data context and limitations Due to steep topography and locally resistive lithologies, portions of the EM data set exhibit limited ground response at operational survey heights; therefore, not all conductive features (if present) may be expressed in the airborne EM channels. The magnetic data set shows strong internal consistency, and is considered suitable for mapping lithologic trends, fold architecture and fault lineaments at the survey scales reported. Interpretation responsibility Unless otherwise stated, geological interpretations, including the copper-fertile corridor, fold-hinge and parasitic-fold targets, and the southwest-northeast fault as a potential fluid conduit, reflect Aeonian's internal interpretation of the contractor's delivered data sets and should be considered conceptual in nature until tested by drilling. We seek Safe Harbor.