Aeonian Resources Commences Follow-up Drill Program at the Koocanusa Project, British Columbia
AEONIAN RESOURCES COMMENCES FOLLOW-UP DRILL PROGRAM AT THE
KOOCANUSA PROJECT, BRITISH COLUMBIA
Vancouver, British Columbia – 1st June, 2026 - Aeonian Resources Corp. ("Aeonian" or the "Company")
(TSX.V: ALTN) is pleased to announce that drilling has commenced at the Koocanusa Project in southeastern
British Columbia as the Company advances follow -up drilling at the Jake Target. The current program will
build on results from drill hole KOO26-01, which confirmed a Revett-style copper-silver system and provided
vectoring toward higher priority targets closer to surface geochemical anomalies and the interpreted core
of the Jake system.
HIGHLIGHTS
• Follow-up drilling has commenced at the Jake Target utilizing a low impact, track mounted drill rig
• Initial drill hole KOO26-01 successfully confirmed subsurface Revett-style copper-silver system and
successfully intersected distal mineralization, providing vectoring toward higher -priority targets
closer to surface anomalies
• Minimum 1,000 metre drill program designed to test interpreted higher-priority portions of the Jake
system between surface mineralization and KOO26-01, in addition to potential drilling at the highly
prospective Oke Target to the north
• Concurrent regional exploration including soil sampling and prospecting will advance additional
targets including Oke, Yahk East, Yahk West and Lilo
• Ongoing structural interpretation integrating more than 1,800 measurements from historical and
recent fieldwork continues to strengthen the Company's district-scale geological model and refine
higher priority drill targets
• Koocanusa now hosts at least 19 identified copper -silver targets across a 360 km² district -scale
land package, including a 50 km western mineralized trend and 22 km eastern trend, highlighting
significant long-term discovery potential
The initial 2026 drill program successfully completed drill hole KOO26-01 prior to seasonal road restrictions
temporarily pausing operations (see May 5, 2026 , news release). Results from KOO26 -01 confirmed the
presence of Revett-style copper-silver mineralization hosted within Creston Formation rocks and validated
key aspects of the Company's geological and structural model. With drilling now underway, the Company is
continuing to test higher priority portions of the Jake system and refine its understanding of the broader
mineralized corridor.
Andy Randell, CEO of Aeonian Resources, commented:
“Commencing drilling again at Koocanusa represents an exciting step forward for the Company.
Drill hole KOO26 -01 successfully confirmed that the Revett -style copper -silver mineralization
observed at surface continues into the subsurface, validating important aspects of our geological
model and provid ing important vectoring toward higher -priority target areas . With drilling now
underway, we now have an opportunity to test closer to the interpreted core of the Jake system
while continuing to expand our understanding of the broader district-scale opportunity.
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What continues to stand out is the scale of the opportunity. Koocanusa now hosts at least 19
identified targets across a 360 square kilometre land package within the same broader Purcell Basin
package associated with major sediment -hosted copper -silver sys tems in Montana, including
Hecla’s Libby Project. These early drill programs are helping us systematically refine the structural
controls, continuity, and broader architecture of what we believe could be a significant regional
copper-silver system.”
Highlights from previously released drill hole KOO26-01 include:
• Copper values of up to 607 parts per million (“ppm”) over 0.50 metres encountered in targeted
stratigraphy alongside key indicators of a large, evolving hydrothermal system
• Localized zones of elevated metals, including up to 77.7 grams per tonne (“g/t”) silver, 6.11 g/t
mercury and 1.5% lead over 0.69 metres, highlight active fluid pathways and support the
interpretation of a dynamic, metal-bearing system
• Confirmation of stratabound copper -silver mineralization hosted within favourable Revett -style
sedimentary horizons
• Intersections of distal and down -dip mineralization associated with the broader Jake structural
system
Figure 1. West Koocanusa Targets
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The current drill program comprises a minimum of 1,000 metres focused initially on the Jake Target (Figure
1). The objective of the program is to continue testing and refining the interpreted mineralized system
between the high grade surface exposures and hole KOO26-01, which successfully intersected down -dip
mineralization distal to the interpreted core of the system.
The Jake Target hosts extensive surface copper-silver mineralization, including historical grab sample values
of up to 0.32% copper and 31.1 grams per tonne silver, associated with structurally controlled mineralized
horizons exposed at surface (see December 8, 2025 , news release) . Previous drilling at KOO26 -01
confirmed the presence of a mineralized Revett-style copper-silver system and provided important vectoring
toward higher priority target areas.
Recent structural interpretation work integrating more than 1,800 measurements from both historical
datasets and recent field programs continues to strengthen the Company's understanding of mineralization
controls across Koocanusa. Early interpretations in dicate a coherent district scale structural framework
characterized by folded sedimentary packages and structural corridors that may have acted as pathways
and trap sites for mineralizing fluids. The Company believes this work is increasingly helping shift targeting
from isolated su rface occurrences toward a broader understanding of basin architecture, structural
repetition, and mineralized corridors across the property.
Concurrent with drilling, Aeonian will also conduct a regional soil sampling and prospecting program focused
on advancing additional target areas including Oke, Yahk East and the Yahk West Target (Figure 1). These
programs are intended to continue refining and expanding the Company's growing pipeline of drill -ready
targets across the district.
In parallel, the Company continues to work collaboratively with local First Nations regarding access to the
nearby Oke Target located north of Jake. Historical sampling at Oke has returned encouraging copper-silver
values up to 2,912 parts per million copper (0.29%) and 9.9 g/t silver (see December 8, 2025, news release)
and represents an important exploration target and potential along -strike extension of the broader
mineralized corridor.
Both the Jake and Oke targets exhibit structural characteristics considered highly prospective for Revett -
style copper-silver mineralization, including fault -controlled fluid pathways and anticlinal trap geometries.
These structures are interpreted to have acted as both fluid delivery systems and mineral traps during
mineralization. Despite the strong geological indicators, these targets remain largely untested by modern
first-pass drilling.
For the current drill program, the Company is utilizing a self propelled, track mounted drill rig operated by
New Age Drilling, with a significantly smaller disturbance footprint than conventional skid mounted systems.
This approach minimizes ground disturbance and aligns with Aeonian’s commitment to responsible
exploration and environmental stewardship during the exploration phase.
The Koocanusa Project represents a district -scale exploration opportunity covering approximately 360
square kilometres. To date, the Company has identified at least 19 distinct copper-silver targets across the
property, with a potential 20th target recognized during recent 2026 fieldwork. The project includes a western
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mineralized trend extending approximately 50 kilometres and an eastern trend extending approximately 22
kilometres, highlighting the exceptional scale and exploration potential of the district.
The current exploration programs represent the early stages of systematically defining and understanding
the subsurface continuity, geometry, and lateral extent of these mineralized systems. At the same time,
ongoing surface exploration programs continue refining the Company’s understanding of the structural trap
architectures controlling mi neralization across the district. While the scale of the Koocanusa Project
represents a significant long -term exploration opportunity that will require methodical advancement,
management believes the early drilling results continue to demonstrate the potential for a substantial district-
scale Revett-style copper-silver system.
Qualified Person and NI 43-101 Disclosure
The scientific and technical information in this news release was reviewed and approved by Kristian
Whitehead, P .Geo., a Qualified Person as defined by NI 43-101. Mr. Whitehead is not independent of the
Company. Mr. Whitehead has verified the data disclosed in this press release, including the sampling,
analytical and test data underlying this information that has been collected. Verification procedures include
industry standard quality control practices.
About the Koocanusa Project
The Koocanusa Project is a district-scale copper-silver exploration property located in southeastern British
Columbia near the Canada-United States border. The project covers approximately 360 km² of prospective
ground within the Purcell Basin, a large Proterozoic sedimentary basin known to host stratiform copper -
silver mineralization.
Exploration at Koocanusa has focused on identifying conductive stratigraphic horizons and structural trap
zones within Revett-equivalent sedimentary units that may host sediment-hosted copper mineralization.
The Koocanusa Project benefits from excellent infrastructure and access, including highway access on three
sides of the property and the ability to conduct exploration activities throughout the year.
The current exploration permit allows for drilling activities over a three-year period, providing the Company
with flexibility to advance exploration depending on results.
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. For additional information, visit the Company's website
www.aeonianresources.com.
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ON BEHALF OF THE BOARD OF AEONIAN RESOURCES CORP.
“Andy Randell”
Chief Executive Officer
For further information, please contact:
Sharyn Alexander, Corporate Communications
Telephone: +1 (604) 800 6849
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Exchange) accepts responsibility for the adequacy or accuracy of this release.
All statements in this press release, other than statements of historical fact, are "forward-looking information" with respect to
Aeonian within the meaning of applicable securities laws, including statements with respect to the Company’s planned drilling and
exploration activities. The Company provides forward-looking statements for the purpose of conveying information about current
expectations and plans relating to the future and readers are cautioned that such statements may not be appropriate for other
purposes. By its nature, this information is subject to inherent risks and uncertainties that may be general or specific and which
give rise to the possibility that expectations, forecasts, predictions, projections or conclusions will not prove to be accurate, that
assumptions may not be correct, and that objectives, strategic goals and priorities will not be achieved. These risks and
uncertainties include but are not limited to those identified and reported in Aeonian’s public filings under Aeonian Resources
SEDAR profile at www.sedarplus.ca. Although Aeonian has attempted to identify important factors that could cause actual actions,
events or results to differ materially from those described in forward-looking information, there may be other factors that cause
actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that such information will
prove to be accurate as actual results, and future events could differ materially from those anticipated in such statements.
Aeonian disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new
information, future events or otherwise unless required by law.