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Acquisition of Highly Prospective Copper-Gold Project

Vancouver, B.C. – June 15, 2021 – Kainantu Resources Ltd. (TSX-V: KRL, FSE: 6J0) (“KRL” or the “Company”), the Asia-Pacific focused gold mining company, is pleased to announce the execution of definitive agreements to acquire control of the May River Project (together, the “Acquisitions”) in the world-renowned copper-gold district of Frieda River, Papua New Guinea (“PNG”).

Matthew Salthouse, Chief Executive Officer commented:

“The May River Project is an exciting acquisition for KRL, given its location in an exceptionally prospective and proven district for significant copper-gold projects.

May River will give KRL access to a number of highly prospective copper-gold prospects in close proximity to the world-renowned Frieda River Copper-Gold Project.

The deal also demonstrates KRL’s ability to execute value accretive acquisitions, in line with our broader strategy of developing a portfolio of high-quality gold and copper-gold projects in the Asia-Pacific region; and advancing these through the value curve.

The May River acquisitions fits KRL’s strategy, and we are excited to access the ground and advance the existing data. KRL looks forward to continuing to work with the key stakeholders of Niuminco and Hardrock in developing both the May River Project and KRL as an emerging mining company.”

Highlights of the Project

  • KRL has entered into two definitive agreements to purchase, indirectly through the acquisition of two holding companies, the highly prospective copper-gold mineral concessions, known as the May River Project (“Project”) consolidating three adjoining tenements: see below further details on the Acquisitions under “Commercial Terms”;
  • The Project is less than 15km from the PanAust owned world-renowned Frieda River Project;
  • Key Project prospects (Skiraisa, Foya, Eserebe, Mountain Gate and Iku Hill) are situated along a 7km long N-NW trending structural corridor, exhibiting many attributes similar to the extended mineralised system identified at the Frieda River Project (between 10 and 15km to the east);
    • Soil, rock chip and channel anomalies indicate the existence of porphyry style Copper-Gold mineralisation in addition to near surface structurally controlled and breccia-hosted epithermal gold veins and berccias;
    • Previous drilling at the Skiraisa prospect has demonstrated significant gold potential: 54m at 1.83g/t Au; 109m at 1.53g/t Au and 96m at 0.89g/t Au;
    • Copper-in-soil anomalies of > 2,500ppm have been reported from several areas at the Mountain Gate prospect;
    • At the Iku Hill prospect, airborne geophysical surveys (and reprocessing of data) have identified intense magnetic targets over a 2km² area; sharing similar structures to the Frieda River Project’s dominant Horse-Ivaal Cu-Au deposit (less than 10km to the east);
  • The Project is in “good standing” and the consolidation of the tenements is expected to be well received by local PNG stakeholders and the National government;
  • On closing of the Acquisitions, KRL will take full ownership and management of the Project;
  • The current owners, Niuminco Group Limited (“Niuminco”) and Hardrock Limited (“Hardrock”), through wholly-owned subsidiaries, will continue collaborating with the Company and will take an equity interest in KRL (on value accretive terms and pricing for KRL); and
  • These Acquisitions are consistent with KRL’s stated corporate strategy of adding quality regional projects to the Company’s portfolio (building on KRL’s current Kainantu projects).

May River Project

Background

The Project is located in the northern foothills of the PNG Highlands in West Sepik Province, near the Frieda and Sepik rivers; and approximately 200km from the northern coast. A map of the Project and location appears in Figure 1.

Figure 1: May River Project: Tenements and Location

In aggregate, the Project comprises three tenements over a total area of 1,697km², as summarised in Figure 2.

Figure 2: May River Project Tenements

Exploration Licence/NameSizeCurrent HolderProspects/Anomalous Areas
EL2603 – May River331km²HardrockSkiraisa, Foya, Mountain Gate
EL2623 – Hotmin1272km²HardrockVarious Au-Cu drainage anomalies
EL2527 – Iku Hill94km²Niuminco (ND) Ltd.Iku Hill

The three tenements were previously contained in one licence: EL1441 (under control of Niuminco (ND) Ltd, before being separate into different holdings and owners in 2018/2019. The Acquisitions by KRL now provide an opportunity to consolidate the Project; albeit with both agreements being standalone and having been negotiated separately between KRL and the respective counterparties.

Niuminco is an Australian company, which has been listed on the Australian Securities Exchange. Hardrock is a private company with founders who are highly regarded mining professionals and active in South-East Asia.

Each of the tenements are currently in “good standing” and the local community has indicated support for further exploration activities in the region.

The Project is located adjacent to Frieda River, one of the world’s largest undeveloped copper resources. The district is world renowned for both porphyry and high-sulphidation epithermal copper and gold styles of mineralisation trending along the Fiak Fault.

Geology

The Project is located on an extensive tenement footprint, with prior holders having conducted exploration and drilling demonstrating significant copper and gold prospectivity. The broader regional geology indicates the likelihood of a number of highly prospective zones across the Project.

Focusing on the southern reaches of the Project in close proximity to Frieda River (ie: within 15km), surface anomalies strongly suggest partly outcropping porphyry copper-gold mineralisation largely concealed beneath extensive areas of high sulphidation alteration, hosting near surface epithermal gold systems.

Historic field work, sampling and drilling by prior holders has identified five highly encouraging prospects: Skiraisa, Foya, Mountain Gate and Iku Hill noted on Figure 1; in addition to Eserebe. These are located on a N-NW trending 7km long corridor splaying off the Fiak Fault and likely to be associated with the mineralizing events identified at the Frieda River Project. They display both epithermal and porphyry style mineralisation, hosted by metamorphics and intermediate intrusive and volcanic rocks, with large diatreme breccia bodies common to at least three of them.

Skiraisa: currently, this prospect has an 850x300m area of anomalous Au-Pb-As-Zn within a larger Zn anomaly of 850x750m. Thirteen diamond drill holes were drilled by the prior tenement holders, including:

  • 54m at 1.83g/t Au;
  • 109m at 1.53g/t Au;
  • 96m at 0.89g/t Au; and
  • 6m at 6.8g/t Au at surface.

Some of the holes terminated in strong mineralisation.

Foya: this prospect has a current area of 150m x 150m of anomalous Au-Ag-Pb, within a larger 1,000m x 200m Ag anomaly.

Eserebe: this prospect, in close proximity to Mountain Gate, displays a 400m x 400m coincident Cu-Au-Ag-Pb-Zn-in soil anomaly open to the east, north, and west. It has not yet been drilled.

Mountain Gate: this prospect is highly prospective in terms of copper-gold potential; with a coincident Cu-Au-Ag-As-Pb-Zn-in-soil anomaly, which is approximately 900x700m centred on a double peaked topographic high. Cu-in-soil samples of >2,500ppm have been reported in several areas across the larger anomaly, with anomalous Au-in-soil (from 0.1 to >0.5ppm) reported from an area of 500x400m. The size and nature of the soil geochemical signature along with context of this prospect suggests an outcropping gold rich porphyry copper body, with tropical weathering and surface leaching of copper apparent. At this stage, the prospect has not been drill tested.

Iku Hill: reprocessed airborne magnetic survey data from this prospect by prior holders identified an intense magnetic target, defined over a 2km² area in diameter, of similar magnitude and intensity as the Horse-Ivaal anomaly (one of the Frieda River Project’s dominant copper-gold deposits): see Figure 3. Iku Hill also demonstrates similar E-NE and NW intersecting lineaments and intrusion orientations as observed at Horse-Ivaal.

Figure 3: Total Magnetic Intensity: Iku Hill and Horse-Ivaal

The intense magnetic anomaly, which is haloed by a series of VTEM anomalies at Iku Hill is extremely encouraging, as porphyry copper-gold systems commonly have a concentrated halo of sulphides with high metal grades around the edges of the host intrusive bodies (as is the case at Horse-Ivaal).

Commercial terms

KRL expects to consolidate the Project tenements in collaboration with the current owners, having executed two separate definitive agreements with Niuminco and Hardrock to acquire the respective PNG holding companies, which currently own and control the tenements. KRL is at arm’s length to both Numinco and Hardrock, and their respective affiliates and shareholders.

In combination and on closing both Acquisitions, KRL will control the Project and the upside potential to develop these highly prospective copper-gold prospects; and the stakeholders of Niuminco and Hardrock will take equity positions in KRL and remain active in supporting KRL.

Definitive Agreement with Niuminco

KRL and its related entities have entered into a definitive agreement with Niuminco and its related entities (the “Niuminco Acquisition”) whereby KRL will acquire the outstanding shares of Niuminco (which holds EL2527) and all historic data in respect of the Project, in exchange for (i) payment of A$250,000 and (ii) issuance by KRL of its common shares equal to A$250,000 in total value based on a 14-day volume weighted average trading price prior to closing (and subject to the rules of the TSX-V). A$250,000 is equivalent to approximately C$234,000 as at June 14, 2021, based on the Australian/Canadian $ exchange rate published by Bloomberg.

Closing of the Niuminco Acquisition is subject to a number of conditions precedent, including:

  • KRL completing corporate and project level due diligence;
  • KRL being satisfied as to the “good standing” of EL2527;
  • receipt of all necessary regulatory and third-party approvals in Canada, Australia and PNG, including approval of the TSXV, if necessary; and
  • such other terms as are customary for transactions of this nature.

A sunset date of August 31, 2021 has been agreed for closing and satisfaction of conditions precedent.

Definitive Agreement with Hardrock

KRL and its related entities have entered into a definitive option agreement with Hardrock and its shareholders (the “Hardrock Agreement”) to acquire Hardrock (which holds EL2603 and EL2623) by way of a series of option arrangements. Specifically, the parties have agreed the following (subject to TSX-V approval where applicable):

  • KRL will, at its expense, complete a field study and sampling programme at May River (the “Study”) to increase confidence and understanding of the Project;
  • on completion of the Study, KRL may exercise a first option (“First Option”) and elect to acquire a 10% equity interest in Hardrock by way of a share subscription (for no further consideration beyond the “in-kind” expenditure incurred to complete the Study);
  • on completion of the First Option, KRL will act as operator of the tenements held by Hardrock;
  • on completion of further exploration, valuations and satisfaction of certain conditions precedent (including obtaining all necessary regulatory approvals in Canada and PNG, including from the TSXV), KRL may exercise a second option (“Second Option”) to purchase the remaining 90% of Hardrock by way of acquisition from the Hardrock shareholders of the remaining outstanding shares of Hardrock for consideration;
  • equal to 90% of the fair value of Hardrock, as determined by an independent valuation and accepted by KRL, the consideration payable by KRL will be settled by way of the issuance of KRL shares equal to such valuation (determined by reference to the 14-day VWAP of KRL shares prior to closing, less a payment of Kina 600,000 (approximately C$200,000));
  • 80% of the KRL share consideration will be issued to Hardrock shareholders on closing, with the remaining 20% representing deferred consideration (and only issued on KRL announcing a JORC compliant resource; and
  • Certain protections in favour of (i) KRL in the event of closing being delayed for reasons beyond KRL’s control; and (ii) Hardrock where 9 months has passed after KRL exercises the first option to acquire the initial 10% of Hardrock.

KRL anticipates the independent valuation to be obtained for exercise of the Second Option to be for an amount not exceeding other recent transactions in the sector in PNG, taking into account comparable per hectare values (including KRL’s internal valuation determined in respect of the transfer of KRL’s assets from Pacific Energy Consulting Limited prior to KRL’s reverse take-over transaction in December 2020).

Closing of the Hardrock Acquisition under the Second Option is subject to a number of conditions

precedent, including:

  • KRL completing corporate and project level due diligence;
  • KRL being satisfied as to the “good standing” of the tenements held by Hardrock;
  • receipt of all necessary regulatory and third party approvals in Canada, Australia and PNG, including approval of the TSX-V; and
  • such other terms as are customary for transactions of this nature.

Closing of the exercise of the Second Option under the Hardrock Agreement is expected to occur on or

before the date that is six months following exercise of the First Option.

Next Steps

KRL will continue to work co-operatively with the management of both Niuminco and Hardrock (and key stakeholders in PNG) to move to obtain all necessary regulatory approvals for the Acquisitions for completion and consolidate the Project. KRL is currently conducting the field work necessary for the Study under the Hardrock Agreement. Initial field work appears positive and KRL will update shareholders on Study findings in due course.

Qualified Person

The scientific and technical information disclosed in this release has been reviewed and approved by Graeme Fleming, B. App. Sc., MAIG, an independent “qualified person” as defined under National Instrument 43-101, Standards of Disclosure for Mineral Projects.

About KRL

KRL is an Asia-Pacific focused gold mining company with two highly prospective gold projects, KRL South and KRL North, in a premier mining region, the high-grade Kainantu Gold District of PNG. Both of KRL’s projects show potential to host high-grade epithermal and porphyry mineralisation, as seen elsewhere in the district. KRL has a highly experienced board and management team with a proven track record of working together in the region; and an established in-country partner.

Enquiries:

Kainantu Resources
Matthew Salthouse, Chief Executive Officer (Tel: + 65 8318 8125)
Callum Jones, Corporate Development Co-ordinator (Tel: + 61 450 969 697)
Email: info@krl.com.sg

IR / Financial PR: Camarco
Gordon Poole / Nick Hennis
Tel: +44(0) 20 3757 4980

For further information please visit https://kainanturesources.com/

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

Disclaimer and Forward-Looking Information Mineralization hosted on adjacent and/or nearby properties is not necessarily indicative of mineralization hosted on the Company’s property. The data disclosed in this release relating to drilling results is historical in nature. Neither the Company nor a qualified person has yet verified this data and therefore investors should not place undue reliance on such data, and no representation or warranty, express or implied, is made by the Company, its affiliated companies, or any other person as to its fairness, accuracy, completeness, or correctness. This release contains forward-looking statements, which relate to future events or future performance and reflect management’s current expectations and assumptions. Such forward-looking statements reflect management’s current beliefs and are based on assumptions made by and information currently available to the Company. All statements, other than statements of historical fact, are forward-looking statements or information. Forward-looking statements or information in this news release relate to, among other things: expectations regarding completion of the Acquisitions, including timing, the results of the Study and further exploration activities on the Project, the valuation of Hardrock, receipt of necessary regulatory approvals and the formulation of plans for drill testing; and the success related to any future exploration or development programs.  These forward-looking statements and information reflect the Company’s current views with respect to future events and are necessarily based upon a number of assumptions that, while considered reasonable by the Company, are inherently subject to significant operational, business, economic and regulatory uncertainties and contingencies. These assumptions include; success of the Company’s projects; prices for gold remaining as estimated; currency exchange rates remaining as estimated; availability of funds for the Company’s projects; capital, decommissioning and reclamation estimates; prices for energy inputs, labour, materials, supplies and services (including transportation); no labour-related disruptions; no unplanned delays or interruptions in scheduled construction and production; all necessary permits, licenses and regulatory approvals are received in a timely manner; and the ability to comply with environmental, health and safety laws. The foregoing list of assumptions is not exhaustive.  The Company cautions the reader that forward-looking statements and information involve known and unknown risks, uncertainties and other factors that may cause actual results and developments to differ materially from those expressed or implied by such forward-looking statements or information contained in this news release and the Company has made assumptions and estimates based on or related to many of these factors. Such factors include, without limitation: fluctuations in gold prices; fluctuations in prices for energy inputs, labour, materials, supplies and services (including transportation); fluctuations in currency markets (such as the Canadian dollar versus the U.S. dollar); operational risks and hazards inherent with the business of mineral exploration; inadequate insurance, or inability to obtain insurance, to cover these risks and hazards; our ability to obtain all necessary permits, licenses and regulatory approvals in a timely manner; changes in laws, regulations and government practices, including environmental, export and import laws and regulations; legal restrictions relating to mineral exploration; increased competition in the mining industry for equipment and qualified personnel; the availability of additional capital; title matters and the additional risks identified in our filings with Canadian securities regulators on SEDAR in Canada (available at www.sedar.com). Although the Company has attempted to identify important factors that could cause actual results to differ materially, there may be other factors that cause results not to be as anticipated, estimated, described, or intended. Investors are cautioned against undue reliance on forward-looking statements or information. These forward-looking statements are made as of the date hereof and, except as required under applicable securities legislation, the Company does not assume any obligation to update or revise them to reflect new events or circumstances.

Drill hole ONED26-007 returns 12 m at 3.1 g/t Au, including 1 m at 18.1 g/t Au, at the new Megabe target; two rigs turning at Ontenu NE within the Osena Project, with a porphyry test being prepared at Ontenu Central; surface exploration and drill-target definition advancing at the Anga Project, adjacent to K92 Mining’s operation; reconnaissance at May River secures community consent and site access

Vancouver, British Columbia – June 16, 2026 – South Pacific Metals Corp. (TSXV: SPMC; OTCQB: SPMEF; FSE: 6J00) (“SPMC” or “South Pacific Metals” or the “Company”) is pleased to report new high-grade gold drill results from its Ontenu NE project and to provide a corporate update across its portfolio of gold-copper exploration projects in Papua New Guinea (“PNG”). Drill hole ONED26-007, the first hole testing the new Megabe target at Ontenu NE, returned 12 m at 3.1 g/t Au, including 1 m at 18.1 g/t Au. The Company has two diamond drills turning at Ontenu NE, within the Osena Project on the southwest border of K92 Mining Inc.’s Kainantu Gold Mine, while drill targeting is being finalised at the adjacent Ontenu Central prospect; surface exploration and drill targeting are underway at the Anga Project (northeast of, and adjacent to, K92); and field work is restarting at May River following a recent reconnaissance visit that secured community consent and confirmed site access.

Executive Chairman, Michael Murphy, commented:

“This is an important stretch for SPMC. Two rigs are turning at Ontenu NE, where our first hole into the new Megabe target has returned high-grade gold, a porphyry test is taking shape at Ontenu Central, and we have completed a reconnaissance visit to May River that secured community consent and site access. We built this position deliberately, and this is the stage where years of groundwork start to show up in the drill core.”

Figure 1: SPMC exploration progress and H2 2026 outlook, showing work completed across the portfolio through 2025 and anticipated activity and news flow at the Ontenu NE, Ontenu Central, Anga, Kili Teke and May River projects. Sequencing and timing are indicative only and subject to change.

OSENA PROJECT – Active Drilling

Ontenu NE is the engine of the current campaign. Two rigs are now turning, with Exploration Manager Octavio Garcia overseeing the program. The Company has drilled both the Onki target and the Jorkol vein system and is currently drilling newly identified NW-trending structures at Megabe (between Onki and Jorkol). Assays from the first Megabe hole, ONED26-007, have now been received and are reported below; holes ONED26-008 (Jorkol) and ONED26-009B (Megabe) have recently been completed and are pending assay results.

New High-Grade Gold at the Megabe Target

  • New high-grade gold zone intersected at the Megabe target, in the corridor between the Jorkol and Onki prospects at Ontenu NE.
  • 12 m @ 3.1 g/t Au and 15.4 g/t Ag from 185 m downhole, including 1 m @ 18.1 g/t Au and 84 g/t Ag.
  • Mineralisation hosted in NW-SE-striking fault breccia within metasediments — a comparable geological host and orientation to K92 Mining’s nearby Kora-Judd operations.
  • The Megabe area is located at Otitapa Creek, a notable source of alluvial gold mined by local artisanal miners.
  • Two drill rigs continue to operate at Ontenu NE; a second Megabe hole, ONED26-009, has been completed and dispatched to the laboratory for assay.

Hole ONED26-007 was the first hole into the Megabe area, which lies within a package of interlayered metasediments and porphyry rocks, proximal to the Onki Diorite contact, and is transected by Otitapa Creek. The hole intersected a recently surface-mapped NW-SE structure in the hanging wall of the main Megabe structure and returned 1 m @ 18.1 g/t Au within 12 m @ 3.1 g/t Au. Other assays within the intercept include up to 1,462 ppm copper and 84 g/t silver. Reported intervals are downhole (core) lengths; based on the interpreted orientation of the host structure relative to the drill hole, true width is estimated at approximately 30% of the downhole interval, preliminary and subject to confirmation by further drilling. Mineralisation is dominantly gold and silver associated with sulphides (mainly pyrite) within a fault breccia zone. The hole was terminated at 198.8 m.

Figure 2: Cross-section through hole ONED26-007 at the Megabe target, Ontenu NE.

Table 1 – Assay results from ONED26-007

Hole_ID

From (m)

To (m)

Intercept (m)

Gold (g/t)

Silver (g/t)

Copper (ppm)

ONED26-007

140

158

18

0.24

3

83

ONED26-007

185

197

12

3.10

15

540

INCLUDING:

      

ONED26-007

185

186

1

18.10

84

153

ONED26-007

186

187

1

0.99

4

71

ONED26-007

187

188

1

0.11

3

109

ONED26-007

188

189

1

0.04

2

93

ONED26-007

189

190

1

2.97

5

126

ONED26-007

190

191

1

1.48

14

1462

ONED26-007

191

192

1

0.69

18

1371

ONED26-007

192

193

1

1.03

14

1347

ONED26-007

193

194

1

0.17

7

830

ONED26-007

194

194.4

0.4

5.47

14

0.5

ONED26-007

194.4

195.2

0.8

4.33

15

375

ONED26-007

195.2

196

0.8

3.58

11

641

ONED26-007

196

197

1

3.18

7

104

Intervals are downhole (core) lengths. True width is estimated at approximately 30% of the downhole interval and is preliminary.

Figure 3: Regional geology and drill plan at the Ontenu Project.

The Ontenu NE Target Areas

Ontenu NE is a single project area that contains several distinct drill targets along one mineralised corridor. To date the Company has reported drilling from three of these — Jorkol, Onki and, for the first time in this release, Megabe.

Jorkol — the western target. Hosts gold-silver mineralisation in structurally controlled zones; drilling to date has returned assays up to 3.16 g/t Au (holes ONED25-001 and ONED26-001, -004 and -005).

Onki — the north-eastern target, centred on the Onki Diorite. Carries copper-gold porphyry-style and higher-grade vein mineralisation; drilling to date has returned peak assays of 9.92 g/t Au and 2.35% Cu (holes ONED26-002, -003 and -006).

Megabe — the new central target reported in this release, in the corridor between Jorkol and Onki and transected by the gold-bearing Otitapa Creek. First-hole results (ONED26-007) returned 12 m at 3.1 g/t Au, including 1 m at 18.1 g/t Au.

All three targets sit within the same NW-SE structural corridor, which the Company interprets as analogous to the setting of K92 Mining’s nearby Kora-Judd system.

Table 2 – Drill hole details

Hole ID

Target

Easting

Northing

Elev (m)

Length (m)

Azimuth

Dip

Assay Status

ONED25-001

Jorkol

365,693

9,295,361

1,771

318.8

45

-61

Received Au+Full ME

ONED26-001

Jorkol

365,745

9,295,652

1,762

400.0

235

-57

Received Au+Full ME

ONED26-002

Onki

366,382

9,296,303

1,817

348.8

290

-55

Received Au+Full ME

ONED26-003

Onki

366,254

9,296,133

1,823

401.9

290

-55

Partial Received preliminary Au-Cu-Ag

ONED26-004

Jorkol

365,667

9,295,561

1,769

171.1

347

-55

Received Au+Full ME

ONED26-005

Jorkol

365,667

9,295,561

1,760

123.0

0

-55

Received Au+Full ME

ONED26-006

Onki

366,261

9,296,122

1,851

304.0

93

-55

Received preliminary Au-Cu-Ag

ONED26-007

Megabe

366,147

9,295,620

1,824

198.8

325

-55

Received preliminary Au-Cu-Ag for part of hole.

ONED26-008

Jorkol

365,670

9,295,560

1,760

167

7

-56

Pending assay

ONED26-009

Megabe

366,160

9,295,800

1,889

371

220

-59

Pending assay

Ontenu NE Drill Program Highlights to Date

(see news release dated May 20, 2026)

  • Gold mineralisation confirmed in 7 of 8 holes at Ontenu NE. Seven holes for 2,804 m completed within the wider Osena Project area on the Kainantu Transfer Zone, the same regional structural corridor that hosts K92 Mining’s producing Kainantu gold-copper mine.
  • Onki Zone, hole ONED26-006: 92 m @ 0.34 g/t Au from 67 m, including 2 m @ 5.74 g/t Au, 1.49% Cu and 35 g/t Ag from 119 m (peak re-assay of 9.92 g/t Au and 2.35% Cu over 1 m).
  • Jorkol Zone, hole ONED26-001:5 m @ 0.77 g/t Au, 0.14% Cu and 19 g/t Ag from 203.5 m, including a 0.5 m peak sample assaying 3.16 g/t Au, 0.62% Cu and 96 g/t Ag with 602 ppm Bi — the strongest bismuth signature of the program. Elevated Bi-Te with Au is a recognised indicator of intermediate- to high-sulfidation epithermal systems.
  • Wide low-grade halos surrounding both high-grade peaks, with multi-element pathfinder signatures (As, Sb, Bi, Te) consistent with the upper levels of such a system.
  • Geological evidence of an intact, vertically zoned hydrothermal system at Onki. Probable phreatic breccia overlying an intensely silicified horizon, interpreted as a silica cap above a preserved system, implying the productive levels of the system may sit at depth, intact and as yet untested.
  • Ontenu Central advancing in parallel: a 2 km zoned alteration footprint with a classic porphyry signature and a relatively shallow (~400 m) porphyry target. Recently identified NW-trending mineralised zones overlying the northern margin of the porphyry signature continue to indicate the potential for K92 Mining Kora-Judd-style structures in the Ontenu area.
  • Two rigs now active: continued drilling at Ontenu NE, with ONED26-007 (Megabe) reported above and holes ONED26-008 and ONED26-009B pending assay; holes ONED26-010 and ONED26-011 in progress; and additional holes planned.

CEO Timo Jauristo commented:

“Our new hole at the Megabe target returned 12 m at 3.1 g/t Au, including 1 m at 18.1 g/t Au, finding gold in another one of the NW trending structures, within a fault-breccia setting similar to K92 Mining’s nearby Kora-Judd system. Our maiden holes had already confirmed that the Ontenu area hosts gold-copper mineralisation within these NW-trending structures, and the multi-element pathfinders are pointing us deeper and along strike, toward where we’d expect the higher-grade mineralisation to sit. With two rigs turning, the assays and the alteration are telling the story and guiding us towards the better parts of the system. We are looking forward to commencing drilling at Ontenu Central — where there are near-surface epithermal targets as well as the makings of a porphyry target at depth.”

Ontenu Central may be the most important target of the campaign. Partially completed detailed geological mapping has outlined three NW-trending mineralised zones overlying and along the northern margin of a 2 km zoned porphyry alteration footprint. The current program contemplates a minimum of three drill holes as a first-pass test of these new NW-trending trends. The Company is also planning a first hole of approximately 600 m to test the porphyry target, the top of which is interpreted at a relatively shallow depth of around 400 m.

The Company is conducting detailed geological mapping over both the Ontenu NE and Ontenu Central projects and has planned a drone-based LiDAR survey across the broader Ontenu area to further tighten the geological understanding and drill targeting.

ANGA PROJECT – Surface Exploration

SPMC’s Anga Project borders K92 Mining’s operations to the northeast, 1.5 km east of K92’s plant and 3 km along strike from K92’s Arakompa–Maniape vein systems. Within a 4 × 3 km footprint, coincident gold-in-soil and magnetic-low geophysical anomalies define prospective structural corridors. Mapping and rock-chip sampling at Golkona are continuing with the objective of locating the sources of these large soil anomalies and defining drill targets to test them. Previously reported Au-Cu-As-Ag soils anomalies up to 1,080 ppb Au, 3,397 ppm Cu, 2,160 ppb Ag and nearby stream-sediment pan concentrates including 281.8 ppm Au, 79.1 ppm Au, 64.9 ppm Au, and 51.6 ppm (see news release dated October 14, 2025). The Company recently commenced first-pass reconnaissance and sampling, which will continue.

Figure 4: Anga Project geophysics and soil geochemistry compilation, showing apparent conductivity (709 Hz), Au-in-soil anomalies, and mapped vein and shear structures along the SPMC-K92 property boundary. Target prospects (Golkona, Golkona South, Binano, Satup) and surface rock-chip results are annotated.

KILI TEKE PROJECT – 4.2 Moz AuEq Inferred Resource

SPMC’s wholly-owned Kili Teke Project in Hela Province hosts an NI 43-101 Inferred Mineral Resource of 4.2 Moz AuEq* (effective 18 November 2022), comprising 1.81 Moz Au, 802 kt Cu and 40 kt Mo, and remains the largest defined resource in the Company’s portfolio. Prior operator Harmony Gold completed extensive drilling and metallurgical testwork at the project; results outside the current resource include 7.8 m @ 12.98% Cu plus 11.75 g/t Au, with surface samples up to 27.5% Cu (see news release dated October 1, 2024).

* Au-equivalent contained ounces based on equal recoveries of Au and Cu only and prices of US$3,300/oz Au and US$4.45/lb Cu. Preliminary metallurgical testwork by Harmony Gold shows gold reporting to copper minerals, indicating the two can be co-recovered. Molybdenum is not included in the Au-equivalent figure.

MAY RIVER PROJECT – Data Compilation & Validation

May River is a district-scale gold-copper system adjacent to PanAust’s Frieda River deposit in PNG’s East Sepik region. Historical drilling at the project includes a copper-gold intercept of 19 m @ 11.47% Cu, 2.17 g/t Au (hole 010UF97) and gold intercepts of 109 m @ 1.53 g/t Au, 57 m @ 1.1 g/t Au and 58 m @ 1.5 g/t Au at the Skirasia prospect (holes 006SK98, 001SK98 and 011SK98), highlighting the scale and grade potential the Company is now working to advance (see news release dated October 30, 2024).

SPMC’s technical team recently completed a reconnaissance visit to the project, which set out to secure community consent for exploration, locate historical drill collars at the Skirasia prospect, and confirm site access — and achieved all three. Communities within proximity to the work area were consulted and briefed on the program, welcoming the Company to begin work.

At Skirasia, a target located within the broader Skygate Cu-Au Porphyry-Epithermal Trend, the team relocated four historical drill sites (one cemented collar and three drill pads) and recorded eight historical trenches and soil-sampling sites, with further historical holes still to be relocated. Field observations during the visit included active local alluvial mining, diatreme breccia, and highly deformed calcareous schist with secondary copper staining in creek float.

Access to the remote site was confirmed, and operational contacts were established with the PNG Defence Force, police, and PanAust at Frieda River. The reconnaissance positions May River for a renewed, community-supported exploration program, with planning for the Company’s first phase of exploration underway.

Figure 5: May River Project regional tenement map showing SPMC tenement boundaries over regional topography, prospect and target locations, historical drill-hole intercepts (including 010UF97: 19 m @ 11.47% Cu, 2.17 g/t Au and 006SK98: 109 m @ 1.53 g/t Au), existing and proposed access, and PanAust’s Frieda River deposit and proposed open pit to the southeast.

The Company will report further results from its ongoing drilling and exploration programs as they are received and reviewed.

Surface assay values referenced above are from selective rock-chip, grab and stream-sediment samples; such samples are selective by nature and are not necessarily representative of the mineralisation hosted on the Company’s properties.

Quality Assurance and Quality Control

All drill holes are logged on site by the Company’s geology team. Drill core (PQ or HQ) is half-cut, with samples secured and shipped to Intertek Laboratory in Lae, Papua New Guinea. Gold is assayed by 50 g fire assay with AAS finish (FA50/AA); copper and silver are assayed by 3-acid digest with AAS finish (PGGA03) at Intertek Lae (“preliminary” in Table 2 above). Sample pulps are subsequently sent to Intertek in Perth, Western Australia for multi-element ICP-MS analysis using a 4-acid digest (4A/MS) (“Full ME” in Table 2 above). Two certified reference materials (standards), one blank and one duplicate are inserted within each batch of 100 samples to monitor laboratory performance.

Qualified Person

The scientific and technical information disclosed in this news release is compiled by Company geologists and consultants and reviewed and approved by Darren Holden, BSc(Hons) (Geology), PhD, FAusIMM, a “Qualified Person” as defined in National Instrument 43-101 *Standards of Disclosure for Mineral Projects*. Dr. Holden is a Technical Advisor to the Company.

Marketing Agreement

The Company is providing supplemental disclosure to its news release dated June 5, 2026, in which it announced that it had entered into an online marketing agreement dated June 5, 2026, with i2i Marketing Group, LLC (“i2i”), pursuant to which i2i will provide corporate marketing and investor awareness services to the Company, including, but not limited to, content creation management, author sourcing, project management and media distribution (the “Agreement”).

The Company had agreed to an initial creation and media budget of US$300,000 (the “Initial Media Budget”) with services contemplated to commence on or about June 12, 2026, and continue until the Initial Media Budget had been fully expended. In order to comply with the policies of the TSX Venture Exchange, the Agreement has been amended to provide that the Initial Media Budget will cover a period of four months, with services contemplated to commence on or about June 22, 2026, subject to acceptance by the TSX Venture Exchange.

Following the initial four-month term, the Agreement may continue on a month-to-month basis for additional campaign expenditures as agreed upon by the parties in advance, subject to acceptance by the TSX Venture Exchange.

About South Pacific Metals Corp.

South Pacific Metals Corp. is an emerging gold-copper exploration company operating in the heart of Papua New Guinea’s proven gold and copper production corridors. SPMC has four exploration properties:

  • Ontenu (Osena) – Bordering K92 to the southwest. Drilling underway on K92-style targets with surface assays up to 21% Cu, 13.9 g/t Au, 645 g/t Ag and 73 g/t Au defining kilometre-scale corridors.
  • Anga – Bordering K92 to the northeast, along strike from K92’s Arakompa discovery; soils to 1,080 ppb Au, 3,397 ppm Cu and stream samples up to 8 g/t Au.
  • Kili Teke2 Moz AuEq* NI 43-101 Inferred Resource (effective 18 November 2022) containing 1.81 Moz Au, 802 kt Cu, & 40 kt Mo; results outside of resource include drilling 7.8 m @ 12.98% Cu plus 11.75 g/t Au, surface samples up to 27.5% Cu.
  • May River – District-scale system beside Frieda River; high-grade drilling includes 19 m @ 11.47% Cu, 2.17 g/t Au and 109 m @ 1.53 g/t Au.

* Au-equivalent contained ounces based on equal recoveries of Au and Cu only and prices of US$3,300/oz Au and US$4.45/lb Cu. Preliminary metallurgical testwork by Harmony Gold shows gold reporting to copper minerals, indicating the two can be co-recovered. Molybdenum is not included in the Au-equivalent figure.

SPMC common shares are listed on the TSX Venture Exchange (TSX.V: SPMC), the OTCQB Marketplace (OTCQB: SPMEF) and Frankfurt Stock Exchange (FSE: 6J00).

For further information please contact:

Michael Murphy, Executive Chairman

Tel: +1-604-260-0309

Email: info@southpacificmetals.ca

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.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of applicable Canadian securities laws. Forward-looking information is often, but not always, identified by words and phrases such as “anticipates”, “expects”, “intends”, “plans”, “believes”, “estimates”, “may”, “could”, “would”, “will”, “potential”, “proposed”, “subject to” and similar expressions, or statements that certain actions, events or results “may”, “could”, “would” or “will” occur or be achieved. Forward-looking information in this news release includes, among other things, statements regarding the Company’s planned and ongoing drilling and exploration programs, the timing and expected results of those programs, the interpretation of geological, geochemical and geophysical data, the potential for mineralisation on the Company’s properties.

Forward-looking information is based on the Company’s current expectations, estimates, forecasts and projections, as well as assumptions that the Company considers reasonable as of the date of this news release. These assumptions include, among others: the continuity of mineralisation; the accuracy of the Company’s interpretation of geological, geochemical and geophysical data; the timing and results of planned and ongoing drilling and exploration; the timeliness of assay results from third-party laboratories; the Company’s ability to obtain and maintain required permits and regulatory approvals; the continued support of local communities and government stakeholders in PNG; the availability of equipment, personnel and consultants; continued access to project sites; and general business, economic and capital market conditions.

Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to differ materially from those expressed or implied by such forward-looking information. These risks and uncertainties include, among others: risks inherent in mineral exploration and development, including that exploration may not result in the discovery of an economically viable mineral deposit; the risk that drilling results, assays and geological interpretations may not be indicative of the presence, continuity or grade of mineralisation; delays in receiving assay results or in the progress of exploration programs; the risk that historical results and third-party data may not be verified or replicated; uncertainties relating to mineral resource estimates, including the Kili Teke Inferred Mineral Resource; the risk that planned exploration activities may be delayed, modified, suspended or terminated; risks relating to title, permitting and access to mineral properties; risks relating to operations in Papua New Guinea, including political, security, infrastructure, community-relations and logistical risks; the Company’s ability to fund its business and exploration activities; commodity price volatility; currency fluctuations; and the other risks described in the Company’s public disclosure documents filed under its profile on SEDAR+.

Readers are cautioned not to place undue reliance on forward-looking information. The forward-looking information contained in this news release is made as of the date hereof, and the Company does not undertake any obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by applicable securities laws.