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GSP Resource Corp. Engages Western Exploration Diamond Drilling for Phase 1 Drilling at Alwin-Mer Properties Targeting High-Grade Gold Expansion & Porphyry Copper, Highland Valley, BC

Exploration Programs

GSP Resource Corp. Engages Western Exploration Diamond Drilling

for Phase 1 Drilling at Alwin-Mer Properties Targeting High-Grade

Gold Expansion & Porphyry Copper, Highland Valley, BC

News Release - Vancouver, British Columbia – May 28, 2026: GSP Resource Corp. (TSX-V:

GSPR / FSE: 0YD / OTC: GSRCF) (the “Company” or “GSP”) announces it has engaged Western

Exploration Diamond Drilling Ltd. of Logan Lake, BC for the first phase of 2026 drilling at its

combined Alwin-Mer properties located in the Highland Valley Copper Camp of British Columbia.

Drilling crews are expected to mobilize over the next 10 days with drilling expected to commence

shortly thereafter. The initial phase of 2026 drilling is planned to target both the potential for

Porphyry Copper at the Mer property, as well as 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 to 1,500 metres.

Subject to the results of the first phase of drilling and market conditions, the Company expects to

plan and initiate a second phase of drilling during the fall exploration season.

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 Cu 2. 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.

Significantly, high-grade gold values in AM -24-06 occur in a 1.64 m core width interval, which

includes an individual sample of 0.84 m assaying 35.1 g/t Au (1.02 oz/ton) , within the interpreted

hanging wall of a broader 7.9 m core width copper-gold-silver zone3.

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

1 See GSP Resource Corp. news release dated January 16, 2025

2 Independent NI 43-101 Technical Report Alwin Copper-Silver Gold Project, with an effective date of September 16,

2024, and prepared by Apex Geoscience Ltd. is filed under the GSP Resource Corp. Issuer Profile SEDAR+

(www.sedarplus.ca)

3 The estimated true width of mineralization is approximately 75% of the drilled width

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 to 1.02% Cu, and averaging

0.4% Cu; in addition to TerraSpec® analysis yielding pargonitic 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 Resource s’ Highland Valley

Copper claim group directly west and south of the Highland Valley Copper Mine’s active operations4

(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 has 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 Mi ning & 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 m apping, bulldozer trenching, completion of 16

percussion drill holes totaling 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% Cu 5 respectively, commencing at

downhole depths ranging from 6 to 18 m.

A single diamond drill hole was centered 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 6 kilometers 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

4 Mineralization present within Teck Resources Highland Valley Operations is not necessarily indicative of GSP

Resources Corp. properties.

5 All drill holes are assumed to be vertical, and the true width of mineralization is unknown.

Figure 3: Mer Proposed Drilling Oblique View Looking North

Qualified Person: The scientific and technical information contained in this news release has been

reviewed and approved by Kristopher J. Raffle, P.Geo. (B.C.), principal and consultant of APEX

Geoscience Ltd. of Edmonton, AB, a consultant to the Company and a “qualified person” as defined

in National Instrument 43- 101 — Standards of Disclosure for Mineral Projects . Mr. Raffle has

verified the data disclosed, which includes a review of the sampling, analytical and test data

underlying the information and opinions contained herein. Mineralization hosted on nearby

properties is not necessarily indicative of mineralization that may be hosted on the Alwin property.

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: [email protected]

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 Information

This news release contains “forward‐looking information or statements” within the meaning of applicable securities laws,

which may include, without limitation, the potential drilling of the Mer and Alwin Properties and the expected timelines,

other statements relating to the technical, financial and business prospects of the Company, its projects and other matters.

All statements in this news release, other than statements of historical facts, that address events or developments that the

Company expects to occur, are forward-looking statements. Although the Company believes the expectations expressed

in such forward- looking statements are based on reasonable assumptions, such statements are not guarantees of future

performance and actual results may differ materially from those in the forward-looking statements. Such statements and

information are based on numerous assumptions regarding present and future business strategies and the environment in

which the Company will operate in the future, including the pr ice of metals, the ability to achieve its goals, that general

business and economic conditions will not change in a material adverse manner, that financing will be available if and

when needed and on reasonable terms. Such forward -looking information reflects the Company’s views with respect to

future events and is subject to risks, uncertainties and assumptions, including the risks and uncertainties relating to the

interpretation of exploration results, risks related to the inherent uncertainty of explorat ion and cost estimates and the

potential for unexpected costs and expenses, and those filed under the Company’s profile on SEDAR + at

www.sedarplus.ca. Factors that could cause actual results to differ materially from those in forward -looking statements

include, but are not limited to, continued availability of capital and financing and general economic, market or business

conditions, adverse weather or climate conditions, failure to maintain all necessary government permits, approvals and

authorizations, fa ilure to obtain or maintain community acceptance (including First Nations), decrease in the price of

copper, gold, silver and other metals, increase in costs, litigation, and failure of counterparties to perform their contractual

obligations. The Company does not undertake to update forward‐looking statements or forward‐looking information,

except as required by law.