GSP Commences Phase 1 Drilling at Alwin-Mer – Targeting High-Grade Gold & Porphyry Copper, Highland Valley, BC

News Release – Vancouver, British Columbia – TheNewswire – June 15, 2026: GSP Resource Corp. (TSX-V: GSPR / FSE: 0YD / OTC: GSRCF) (the “Company” or “GSP”) announces that 2026 drilling at the combined Alwin-Mer properties located in the Highland Valley Copper Camp of British Columbia has commenced. The first phase of 2026 drilling is targeting both porphyry copper potential at the Mer property and follow-up drilling to a gold discovery drilled at Alwin in late 2024. The first phase of drilling is expected to total between 1,200 and 1,500 metres.

GSP Resource Corp. President & CEO, Simon Dyakowski commented: “GSP has commenced 2026 drilling at a time of renewed exploration and development activity in the Highland Valley Copper Camp, with copper trading near record highs. Phase 1 pairs first-pass porphyry copper drilling at Mer with follow-up to our 2024 high-grade gold discovery at Alwin — two distinct targets within a single camp that we believe each offer meaningful upside as we advance the projects.”

Alwin High-Grade Gold Targets:

Phase 1 drilling at the Alwin high-grade gold target is expected to follow up on the discovery of high-grade gold values drilled in late 2024 in step-out hole AM-24-06 that yielded 5.04 grams-per-tonne (g/t) Gold (Au) and 1.01% Copper (Cu) over 7.90 metres (m); including 22.93 g/t Au and 1.82% Cu over 1.64 m¹.

The Alwin Project currently hosts an inferred mineral resource comprising 1.46 million tonnes (Mt), at an average grade of 1.08% Cu, yielding 34.6 million pounds of Cu². Potentially significant silver and gold values have long been known at Alwin, however a lack of historic assays for these metals prior to drilling by GSP has precluded their inclusion in resource estimation. The new discovery within west-side step-out drill hole AM-24-06 at a depth of 40 m below the current resource pit shell presents an opportunity to augment existing open pit and underground mineable copper resources with high-grade gold values.

The occurrence of high-grade gold values, below the vertical projection of existing “3 Zone” modelled copper resources, affirms the Company’s belief that these two contrasting mineralization styles are structurally and genetically linked, and can be successfully targeted within the context of the current Alwin Mine geological model. Additionally, the Alwin high-grade gold mineralization is visually distinct from the broader copper zones and is marked by the presence of intense texturally destructive black chlorite-sericite alteration.

As part of the first phase of 2026 drilling, GSP is planning to step out and potentially expand the footprint of important high-grade gold mineralization within AM-24-06. The drilling is designed to test both laterally and vertically beyond AM-24-06 to provide additional intercepts to confirm the structural setting, as well as to extend the depth of drill holes to test additional modelled copper lodes within the structural footwall to the north that are equally as prospective (Figure 1).

Figure 1: Alwin Mine Planned High-Grade Gold Target

Mer Porphyry Copper Drill Targets:

GSP also plans to drill a new porphyry target defined through compilation of historic drilling data, and recently advanced by follow-up rock and grid soil sampling as part of the first phase of 2026 drilling. Follow-up soil and rock sampling at Mer targeted the area of historic drilling and defined an approximately 175 x 120 metre copper anomaly that is open to the northwest. Rock sampling at the historic Mer showing yielded 12 samples returning between 0.14 and 1.02% Cu, and averaging 0.4% Cu; in addition to TerraSpec® analysis yielding paragonitic muscovite and magnesium-iron chlorite compositions suggesting a higher-temperature proximal porphyry environment (please see news release dated November 26, 2025, for soils and rocks; and December 16, 2025 for TerraSpec® results).

The Mer Property comprises 185 hectares in the Kamloops Mining Division, located approximately 1.5 km NW of GSP’s Alwin Mine Project and is surrounded by Teck Resources’ Highland Valley Copper claim group directly west and south of the Highland Valley Copper Mine’s active operations³ (Figure 2). The Mer Property hosts a copper exploration target zone located NW of the Company’s Alwin Mine high-grade copper-silver-gold target zone.

The permit provides for an initial year-one diamond drilling program, followed by permitting sufficient surface disturbance to support anticipated expansion diamond drilling within the following four years of the permit. The Property is well-accessed via existing logging roads that traverse the proposed drilling area where prior logging activities and excavator trenching have exposed a zone of copper mineralization at surface (Figure 3).

About the Mer Claims:

The Mer Claims were the subject of intensive exploration by the Cleveland Mining & Smelting Co. Ltd. between the years 1965 and 1971. During that time exploration within the current Mer and surrounding claims now held by Teck Highland Valley Copper Corporation comprised geochemical and IP/resistivity geophysical surveys, geologic mapping, bulldozer trenching, completion of sixteen percussion drill holes totalling 610 metres (m), and a single 150 m diamond drill hole targeting the Mer showing.

Percussion and diamond drilling were reported to define a 70 x 120 metre northeast-trending porphyry copper-molybdenum zone characterized by disseminated chalcocite, chalcopyrite, bornite and molybdenite mineralization and associated biotite and sparse potassic alteration.

At the Mer showing, historical percussion drill holes 1, 3, 15, and 16, forming a 70 x 40 m diamond pattern in plan, returned values of 9 m averaging 0.47% copper (Cu); 30 m averaging 0.53% Cu; 15 m averaging 0.50% Cu; and 21 m averaging 0.51% Cu⁴ respectively, commencing at downhole depths ranging from 6 to 18 m.

A single diamond drill hole was centred on the percussion drill holes and intersected a zone of chalcocite mineralization within biotite and potassic altered granodiorite intrusive rocks averaging 0.29% Cu over 24 m from a downhole depth of 9 m. The zone of mineralization remains open to the north and west.

No significant exploration has been reported within this project since the initial work programs ending in the early 1970s. Given the presence of drill-confirmed porphyry copper-molybdenum mineralization, a location six kilometres west of the Valley Pit at Teck Resources Limited’s Highland Valley Copper Operations, and its position within the Chataway and Guichon granodiorite phases of the Guichon Batholith, the Mer Project is a high priority for follow-up exploration.

Figure 2: Mer and Alwin Mine Claims – Highland Valley Copper Camp

Figure 3: Mer Proposed Drilling Oblique View Looking North

Qualified Person:

The scientific and technical disclosure contained in this news release has been reviewed and approved by Christopher I. Dyakowski, P. Geo., a director of the Company and a “Qualified Person” as that term is defined in National Instrument 43-101 – Standards of Disclosure for Mineral Projects. Mineralization hosted on nearby properties is not necessarily indicative of mineralization that may be hosted on the Alwin or Mer properties.

About GSP Resource Corp.

GSP Resource Corp. is a mineral exploration & development company focused on projects located in southwestern British Columbia. The Company owns 100% interest and title to the Alwin Mine Copper-Gold-Silver Property, and the Mer Property, in the Kamloops Mining Division, as well as a 100% interest and title to the Olivine Mountain Property in the Similkameen Mining Division.

For more information, please contact:

Simon Dyakowski, Chief Executive Officer & Director
Tel: +1 (604) 619-7469
Email: simon@gspresource.com

Past performance is not an indicator of future returns. NIA is not an investment advisor. Always do your own research. NIA has received compensation from GSPR of US$60,000 cash for a six-month marketing contract and the company has agreed to extend this contract for an additional six-month period for US$60,000 cash. This message is for informational and educational purposes only.