Mr. Niel Marotta reports

SUN SUMMIT IDENTIFIES A 12.0 KM TREND OF PORPHYRY TARGETS AND EXPANDS THE CR SOUTH IP ANOMALY, BUCK PROJECT, CENTRAL B.C.

Sun Summit Minerals Corp. has released the results from the summer 2026 exploration program on the Buck project, central British Columbia. The program focused on the western side of the project area, centred on the CR porphyry trend.

Highlights:

• New DCIP (direct current induced polarization) data enhance the CR porphyry trend: The new DCIP data, together with compiled data from previous surveys, highlight strong geophysical anomalies locally associated with zones of porphyry-related copper-molybdenum mineralization.
• Compilation highlights untested porphyry targets: Multiple coincident chargeability, magnetic and multielement soil geochemical anomalies are identified across the interpreted 12-kilometre (km) trend. Only two targets have been previously drill tested.
• Planning under way for future exploration program: The largely drift-covered and concealed CR porphyry trend will be the focus for further DCIP and soil geochemical surveys aimed at refining drill targets.

"While our primary focus remains on our flagship JD property in the Toodoggone mining district, we allocated a modest budget at our 100-per-cent-owned Buck project in central B.C. The filed expenditures have pushed out the anniversary date for the CR claims to the year 2030," stated Niel Marotta, chief executive officer of Sun Summit Minerals. "The CR porphyry trend, on the western side of the Buck project, hosts multiple near-surface porphyry targets that offer discovery and expansion potential. The project is road accessible and benefits from excellent infrastructure, sitting just south of Houston, B.C. Central British Columbia remains a premier jurisdiction for porphyry and epithermal exploration, as demonstrated by the strong regional activity from peers like Amarc, Vizsla Copper, Surge Copper, Equity Metals and American Eagle."

2026 CR exploration program

The 2026 exploration program at the Buck project, 10 km south of Houston, B.C., focused on the CR porphyry trend -- a 12-kilometre north-south corridor of porphyry-related copper-molybdenum targets on the western side of the project area. The program was designed to evaluate the exploration potential of the trend through integration of historical exploration data with newly acquired geochemistry and DCIP geophysical data.

The 2026 program expanded the geochemical database through collection of 430 soil samples, 26 rock samples and 13 stream sediment samples, and included a statistical evaluation of 2026 geochemical data sets. The purpose of the work was to evaluate the exploration potential of the western side of the property through integration of historical exploration data, recent geological mapping, rock sampling, stream sediment sampling, soil geochemistry and interpretation of newly collected exploration geochemistry.

Soil samples were collected on an east-west-oriented grid with 100 m sample spacing and 200 m line spacing. Silt samples were collected opportunistically where east-west-oriented sampling grid lines intersected streams containing suitable fine-grained sediment accumulations. Rock samples were collected opportunistically where east-west-oriented survey lines intersected outcrop.

The 2026 grid-based, DCIP survey focused on the CR South porphyry target and consisted of 8.8 line kilometres across four north-south-oriented lines spaced 400 metres apart. The survey was designed to characterize and detect sulphide mineralization east of an open-ended high-chargeability anomaly defined in the historical data and associated with known porphyry-related copper-molybdenum mineralization.

Data from the 2026 DCIP survey have been compiled with results from over 61 line kilometres of historical IP data collected between 1994 and 2019. The compilation model covers only 8.0 kilometres of the CR porphyry trend and defines three broad chargeability anomalies. Highlights include:

• CR South: The DCIP compilation defines a strong, more-than-20-millivolt-per-volt (mV/V) chargeability anomaly that covers approximately 1.7 kilometres by 0.7 kilometre and is spatially coincident with an elliptical magnetic anomaly (magnetic low within a circular magnetic high). These coincident geophysical anomalies are also coincident with broad zones of elevated copper in potassic altered rock samples (up to 1.3 per cent copper (Cu) (1)) and consistent high copper-in-soil geochemistry. Mineralization occurs within an east-west-oriented corridor, hosted primarily in granodiorite, hydrothermal breccia and quartz-feldspar porphyries. The CR South target has been investigated by 15 shallow drill holes totalling 3,570 metres primarily in 2005 and 2007. Significant drill intercepts include 68.0 metres at 0.50 per cent Cu and 0.015 per cent molybdenum (Mo) in drill hole CR05-03 (1), and 168.0 metres at 0.37 per cent Cu and 0.017 per cent Mo in drill hole CR07-14 (2). Copper-molybdenum mineralization consists of quartz-chalcopyrite-molybdenite-plus-or-minus-bornite veins and stockwork zones, and as hydrothermal cement (chalcopyrite-biotite-magnetite) within brecciated granodiorite. Results from the 2026 DCIP survey are interpreted to indicate potential for additional porphyry-related mineralization at depth and to the east of previous drilling.
• CR North: The dominantly till-covered CR North porphyry target is centred approximately 1.8 kilometres north of the CR South porphyry target. Sparse outcrop comprises mostly andesite cut by local granodiorite and QFP dikes with variable propylitic and phyllic alteration. A broad and open zone of sulphide-cemented breccia has been observed near the southern extent of the target. The target area consists of a broad 1.2-kilometre-by-0.6-kilometre copper-in-soil anomaly on the margins of a strong magnetic high anomaly, coincident with the southern extent of the broad approximately 2.7 by 1.0 km, more than 20 mV/V high-chargeability anomaly. Most of the chargeability anomaly is associated with a broad magnetic-low anomaly interpreted to represent zones of hydrothermal alteration. This broad target area has only been evaluated by two previous drill holes totalling 876.5 metres by Teck Resources in 2019. Both holes intersected zones of hydrothermal alteration with local intervals of porphyry-related copper mineralization (4.1 metres at 1.05 per cent Cu and 18.1 metres at 0.18 per cent Cu in drill hole CR19-02 (1)) associated with propylitic and local k-feldspar-biotite alteration. Further exploration and drilling are warranted across the broad and highly prospective target area.
• CR Far North and CR Far South: Two additional targets are defined based on geophysical data on the northern and southern extent of the CR porphyry trend. The CR Far North target consists of a broad moderate high-chargeability anomaly coincident with a magnetic-high anomaly. The CR Far South target represents a discrete magnetic-high anomaly along trend from the CR South porphyry system. The magnetic-high anomaly is interpreted to represent a concealed magnetic intrusion, similar to the margins of the CR South and CR North porphyry targets. Both targets lack soil geochemical coverage and the CR Far South target lacks IP coverage.

The CR porphyry trend is interpreted to be underlain by a package of andesite, rhyolite and associated volcaniclastic rocks of the Lower to Middle Jurassic Telkwa formation of the Hazelton Group. These volcanic rocks are cut by prospective quartz-feldspar porphyry intrusions, granodiorite dikes and feldspar-porphyritic andesite locally associated with porphyry-related copper-molybdenum mineralization.

Next steps

Planning is under way for future exploration across the CR porphyry trend and includes compilation of all new data and interpretation and drill target prioritization.

Quality assurance and quality control

Samples were placed in rice bags and security tags were affixed to each rice bag to maintain sample security and chain of custody. Samples were subsequently shipped to ALS Canada Ltd. in North Vancouver, via Bandstra Transportation Systems, for geochemical analysis. ALS Global is registered to ISO/IEC 17025:2017 accreditations for laboratory procedures.

Soil and silt samples were prepared and analyzed at ALS Canada in North Vancouver. The soil samples were dried at less than 60 C and then sieved to minus 180 microns (80 mesh) in preparation for analysis. A 25-gram (g) split was weighed out from the sieved sample and then analyzed using the AuME-TL43 package. This package is a multielement (51 elements) trace level method using aqua regia digestion and analyzed by an ICP-MS (inductively coupled plasma mass spectrometry) finish. ALS is independent of the company.

Rock samples were prepared and analyzed at ALS Canada in North Vancouver. The rock samples were finely crushed to a target of 70 per cent passing two millimetres (mm). Then the sample was passed through a riffle splitter and up to 250 g was pulverized to a target of 85 per cent passing 75 microns. Rock samples were then analyzed with the trace-level analytical packages Au-AA23 and ME-MS61. The Au-AA23 package analyzes gold (Au) by 30 g lead fire assay and atomic absorption spectroscopy (AAS). The remaining elements were analyzed with multielement (48 elements) package ME-MS61 that uses a four-acid digestion and ICP-MS finish.

National Instrument 43-101 disclosure

This news release has been reviewed and approved by Sun Summit's vice-president, exploration, Ken MacDonald, PGeo, a qualified person as defined in National Instrument 43-101, Standards of Disclosure for Mineral Projects, of the Canadian Securities Administrators. Mr. MacDonald has verified the data disclosed in this news release, including the sampling, analytical and test data underlying this information that have been collected by Sun Summit. Verification procedures include industry standard quality control practices. Some technical information contained in this news release is historical in nature and has been compiled from public sources believed to be accurate. The historical technical information has not been verified by Sun Summit and may in some instances be unverifiable dependent on the existence of historical drill core and grab samples.

Community engagement

Sun Summit is engaging with first nations on whose territory the company's projects are located, and is discussing their interests and identifying contract and work opportunities, as well as opportunities to support community initiatives. The company looks forward to continuing to work with local and regional first nations with continuing exploration.

About the Buck project

The Buck property consists of 62 mineral claims covering approximately 53,638 hectares (ha) and is located approximately 10 km south of Houston, B.C., within the Omineca mining division. The property is readily accessible from Highway 16 via Morice River Road and Buck Flats Road, and a network of forestry and exploration roads. The Buck project is situated in a historic mining district with excellent nearby infrastructure that allows for year-round, road-accessible exploration. Mineralization on nearby properties is not necessarily indicative of mineralization on the Buck project.

The property is situated within the Stikine Terrane and is underlain by a diverse assemblage of volcanic, volcaniclastic, sedimentary and intrusive rocks, including Hazelton Group volcanic rocks, Skeena Group sedimentary rocks, Kasalka Group volcanic rocks and related intrusive phases. Regional deformation is characterized by northwest-trending faults that provide favourable pathways for hydrothermal fluid flow and mineralization.

The project is host to the Buck Main intermediate-sulphidation epithermal-related gold-silver-zinc system. Most of the mineralization drilled to date at Buck Main consists of long, continuous zones of disseminated and breccia-hosted, bulk-tonnage-style gold-silver-zinc. Vein-hosted, high-grade mineralization has also been intersected near the centre of Buck Main.

Exploration at the Buck project is focused on investigating the lateral and vertical extent of gold-silver-zinc mineralization at the Buck Main system, and to define additional drill targets across the entire land package through systematic exploration programs.

About the JD project

The JD project is located in the Toodoggone mining district in north-central British Columbia, a highly prospective deposit-rich mineral trend. The JD project covers an area of over 15,000 hectares and is in close proximity to active exploration and development projects, such as Thesis Gold and Silver Inc.'s Lawyers and Ranch projects, TDG Gold Corp.'s Baker-Shasta projects, Amarc Resource Ltd.'s AuRORA project, Centerra Gold Inc.'s Kemess East and Underground projects, as well as the past-producing Kemess open-pit copper-gold mine.

The project is 450 kilometres northwest of the city of Prince George and 25 kilometres north of the Sturdee airstrip. It is proximal to existing infrastructure in place to support the past-producing Kemess mine, including roads and a hydroelectric power line.

The JD project is in a favourable geological environment characterized by both high-grade epithermal gold and silver mineralization, as well as porphyry-related copper and gold mineralization. Some historical exploration, including drilling, geochemistry and geophysics, has been carried out on the property, however, the project area is largely underexplored.

About Sun Summit Minerals Corp.

Sun Summit Minerals is a mineral exploration company focused on the discovery, expansion and advancement of district-scale gold and copper assets in British Columbia. The company's portfolio is anchored by its flagship JD project, alongside the Theory and Orbit projects in the prolific Toodoggone region of north-central B.C., and the Buck project in central B.C.

(1) 2026 geological assessment report on the CR zone of the Buck property, B.C. Ministry of Energy and Mines, AR TBD, 296 pages.

(2) Kraft et al., 2019, year-end report on geophysical, geological and geochemical work conducted during 2019, CR mineral tenure, Omineca mining division, B.C. Ministry of Energy and Mines, AR 39054, 352 pages.

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