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News Release - Vancouver, British Columbia – TheNewswire - September 1, 2026: GSP Resource Corp. (TSX-V: GSPR / FSE: 0YD / OTC: GSRCF) (the “Company” or “GSP”) provides a summary of the Company’s activities completed to date in 2026 and an outlook for the fall 2026 exploration season. In the first eight months of the year the Company financed, permitted and completed an expanded 1,801 metre Phase 1 diamond drilling program at its 100%-owned Alwin Mine and Mer properties in the Highland Valley Copper Camp of British Columbia, anchored by four step-out holes designed to expand the high-grade gold discovery made in late 2024 at Alwin, and regained a 100% interest in its Olivine Mountain copper-gold-PGE property in the Similkameen Mining Division. All Phase 1 drill core has been logged, sampled and submitted for analysis, and the first assay results – from the Alwin high-grade gold target – are anticipated in September.

2026 Year-to-Date Highlights

• Four step-out holes (approximately 1,150 metres) completed at the Alwin high-grade gold discovery: The holes were designed to flank and extend 2024 discovery hole AM-24-06, which returned 5.04 g/t gold and 1.01% copper over 7.90 metres, including 22.93 g/t gold and 1.82% copper over 1.64 metres, within which an individual 0.84 metre sample assayed 35.1 g/t gold (1.02 oz/ton) (see news releases dated January 16, 2025 and April 29, 2026). Each 2026 hole yielded mineralized zones with visual characteristics similar to the 2024 discovery core and consistent with the modelled mineral resource vein lodes.  

• Gold is not yet in the Alwin resource: The Alwin Project hosts an inferred mineral resource of 1.46 million tonnes at 1.08% copper, containing 34.6 million pounds of copper, estimated on copper only (Independent NI 43-101 Technical Report, Alwin Copper-Silver-Gold Project, effective September 16, 2024, prepared by APEX Geoscience Ltd. and filed under the Company’s profile on SEDAR+). Potentially significant gold and silver values have long been known at Alwin, but a lack of historic precious metal assays prior to drilling by GSP has precluded their inclusion in resource estimation (see news release dated April 29, 2026). The 2024 discovery lies approximately 40 metres below the current resource pit shell.  

• High-grade gold-silver-copper at surface: Fall 2025 surface rock sampling at the Alwin Apex Zone returned grab sample assays including 1.85% copper, 348 g/t silver and 2.6 g/t gold (see news release dated November 26, 2025). Grab samples are selective by nature and are not necessarily representative of the mineralization hosted on the property.  

• 1,801 metres drilled across eight diamond drill holes: Phase 1 drilling at Alwin and Mer was completed on August 11, 2026, approximately 20% above the upper end of the planned 1,200 – 1,500 metre program, with the expansion driven by alteration and mineralization observed in drill core (see news release dated August 11, 2026).  

• Maiden diamond drilling at the Mer porphyry copper target: Four holes totalling approximately 651 metres constituted the first diamond drilling at Mer since a single historic hole in 1966. All four holes intersected near-surface visible copper mineralization, and hole ME-26-04 was extended to 292.7 metres – the deepest hole completed at the property to date. Assay results are pending.  

• 2,432 core samples submitted to ALS Canada Ltd., Kamloops: All Phase 1 core has been logged and sampled for multi-element and precious metals analysis, including gold by fire assay. Assay results are expected in stages from September through October 2026, with results from the Alwin high-grade gold target anticipated first.  

• $1.22 million over-subscribed private placement: Closed May 14, 2026, comprising 3,633,333 flow-through shares at $0.15 and 5,625,000 units at $0.12, with flow-through proceeds directed to exploration at Alwin and Mer eligible for the Critical Mineral Exploration Tax Credit (see news release dated May 14, 2026).  

• Five-year Mer drilling permit received: A multi-year area based (MYAB) permit for the Mer property was received on April 22, 2026, providing for the year-one program now completed and for anticipated expansion drilling over the following four years.  

• 100% interest in Olivine Mountain copper-gold-PGE property retained: On August 21, 2026 the Company announced the termination of a third-party option on its 29-title, approximately 3,022 hectare Olivine Mountain property, where a historic select surface sample from the Hop showing assayed 23.0 g/t gold, 89.5 g/t silver and 7.49% copper (see news releases dated December 11, 2018 and August 21, 2026). Select samples are by their nature not representative of mineralization hosted on the property.  

• Three 100%-owned projects totalling approximately 3,782 hectares in southwestern British Columbia: the Alwin Mine property (approximately 575 hectares) and the Mer property (approximately 185 hectares) in the Kamloops Mining Division, and the Olivine Mountain property (approximately 3,022 hectares) in the Similkameen Mining Division.  

Simon Dyakowski, Chief Executive Officer of GSP, commented: “The high-grade gold discovery we made at Alwin in late 2024 changed how we think about the project. Alwin has always been a copper story – the current resource is estimated on copper alone – yet hole AM-24-06 returned nearly 23 g/t gold over 1.64 metres, with an individual sample over an ounce per tonne, sitting just 40 metres below the pit shell, and our fall 2025 surface sampling added 2.6 g/t gold with 348 g/t silver at the Apex Zone. This year we set out to drill 1,200 to 1,500 metres and finished with 1,801, because the rocks kept giving our geologists reasons to keep drilling. Four holes now flank the gold discovery, every one of them logged mineralized zones visually similar to the 2024 core, and they are first in line at the lab. Alongside that, we completed the first diamond drill test of the Mer porphyry copper target in sixty years and brought Olivine Mountain back into the portfolio at no cost. With a funded treasury and every hole at the ALS lab, the fall will be defined by results.”

Alwin High-Grade Gold Target – The Story to Date

• Late 2024 – Discovery: West-side step-out hole AM-24-06 intersected 5.04 g/t gold and 1.01% copper over 7.90 metres, including 22.93 g/t gold and 1.82% copper over 1.64 metres (157.36 – 159.00 m), approximately 40 metres below the vertical projection of the modelled “3 Zone” copper resource. The estimated true width of mineralization is approximately 75% of the drilled width. The gold zone is visually distinct from the broader copper lodes, marked by intense, texturally destructive black chlorite-sericite alteration (see news releases dated January 16, 2025 and April 29, 2026).  

• Summer 2025 – Geophysics: An NSAMT (natural-source audio-frequency magneto-telluric) survey identified an untested deep conductive anomaly in the northern portion of the Alwin property, which could indicate a potential underlying porphyry source for the high-grade copper-gold-silver mineralization (see news release dated August 12, 2025).  

• Fall 2025 – Surface sampling and hyperspectral analysis: Rock grab sampling returned high-grade values at the Apex Zone, including 1.85% copper, 348 g/t silver and 2.6 g/t gold, and TerraSpec® hyperspectral analysis yielded muscovite and chlorite compositions indicative of a peripheral porphyry environment at Alwin (see news releases dated November 26, 2025 and December 16, 2025).  

• 2026 – Step-out drilling: Four diamond drill holes totalling approximately 1,150 metres were drilled to test laterally and vertically beyond AM-24-06 to confirm the structural setting of the gold zone and to extend into additional modelled copper lodes in the structural footwall to the north. Core observations identified several quartz-chlorite-sericite and chalcopyrite-pyrite (±bornite) mineralized zones in each hole with visual characteristics similar to the 2024 discovery core (see news releases dated July 8 and August 11, 2026).  

The occurrence of high-grade gold below the modelled copper resource supports the Company’s interpretation that the two mineralization styles are structurally and genetically linked and can be targeted within the existing Alwin geological model, presenting an opportunity to augment the open pit and underground copper resource with high-grade gold values. Visual estimates of mineralization and descriptions of alteration should not be considered a proxy or substitute for laboratory analyses. Assay results are required to determine the presence and grade of any mineralization, and the Company cautions that visual observations provide no assurance as to the results of pending laboratory assays.

Mer Porphyry Copper Target – Maiden Drill Program

The Mer property comprises 185 hectares located approximately 1.5 km northwest of the Alwin Mine and approximately 6 km west of the Valley Pit at Teck Resources’ Highland Valley Copper operations, and is surrounded by Teck’s Highland Valley Copper claim group directly west and south of the mine’s active operations. Mineralization present within Teck Resources’ Highland Valley operations is not necessarily indicative of mineralization on the Company’s properties. Historic percussion drilling at the Mer showing in the late 1960s returned intercepts including 30 metres averaging 0.53% copper, and the Company’s 2025 soil program defined a 175 x 120 metre copper-in-soil anomaly open to the northwest (see news releases dated March 13, 2025 and January 26, 2026). The four 2026 Mer holes (approximately 651 metres) were the first diamond drilling at the target since 1966. Drill core displayed fracture-related potassic, chloritic (propylitic) and silicification alteration hosted in granodiorite of the Guichon Creek Batholith, with trace sulphide mineralization observed through broad intervals of hole ME-26-04, which was extended to a final depth of 292.7 metres and terminated in trace-mineralized granodiorite.

Fall 2026 Outlook

• Staged assay results, September – October 2026: Phase 1 assay results will be released as they are received, compiled and verified by the Company’s qualified person, with results from the four Alwin high-grade gold step-out holes anticipated first, followed by the Mer holes.  

• Data integration and targeting: Assay results will be integrated with the Company’s existing geophysical, geochemical, hyperspectral (TerraSpec®) and drilling datasets across the combined Alwin-Mer property position, including the untested deep NSAMT conductor at Alwin, to guide targeting for subsequent programs.  

• Phase 2 drilling decision: Subject to the results of Phase 1, available funds and market conditions, the Company expects to evaluate and plan a second phase of drilling at the Alwin-Mer properties during the fall exploration season, consistent with the program outlined in the Company’s news release dated April 29, 2026.  

• Olivine Mountain: The Company will evaluate the two-phase follow-up exploration program recommended in the 2020 NI 43-101 technical report on the Olivine Mountain copper-gold-PGE property (see news release dated August 21, 2026).  

Property Portfolio Snapshot

Qualified Person: The scientific and technical information contained in this news release relating to the Alwin Mine and Mer properties 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. The scientific and technical information relating to the Olivine Mountain property has been reviewed and approved by Christopher I. Dyakowski, P.Geo., a director of the Company and a qualified person as defined in NI 43-101. Mineralization hosted on nearby properties is not necessarily indicative of mineralization that may be hosted on the Company’s 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 a 100% interest in and title to the past-producing Alwin Mine Copper-Silver-Gold Property and the Mer Claims, both located in the Highland Valley Copper Camp in the Kamloops Mining Division, as well as a 100% interest in and title to the Olivine Mountain Property in the Similkameen Mining Division.

Contact Information - For more information, please contact:

Simon Dyakowski, Chief Executive Officer & Director

Tel: (604) 619-7469

Email: simon@gspresource.com

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 anticipated timing and release of assay results from the Phase 1 drilling program, the planning of a second phase of drilling, future exploration work on the Alwin, Mer and Olivine Mountain properties, 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 price 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 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 conditions, decrease in the price of copper and gold, failure to maintain all necessary government permits, approvals and authorizations, failure to maintain community acceptance (including First Nations), 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.

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