Mr. Niel Marotta reports

SUN SUMMIT PROVIDES EXPLORATION UPDATE FROM THE JD PROJECT IN BC'S TOODOGGONE DISTRICT; OVER 3,100 METERS OF DRILLING COMPLETED AT THE CREEK ZONE

Sun Summit Minerals Corp. has provided an update from its continuing project-wide 2025 exploration program at the JD project, Toodoggone mining district, north-central British Columbia.

Highlights:

• Drilling nearly complete at the Creek zone: Over 3,100 metres of drilling have been completed across 10 holes at the Creek zone, with additional drill holes planned. The holes investigated the extent and continuity of near-surface, high-grade and bulk-tonnage gold mineralization. Historical and recent highlight intercepts from 2024 drilling at the Creek zone include:
  • 122.53 metres of 2.11 grams per tonne gold, including 1.5 of 121.0 g/t Au (CZ-24-0047);
  • 54.95 m of 2.69 g/t Au, including 19.50 m of 7.31 g/t Au (CZ-24-0058);
  • 22.0 m of 11.7 g/t Au, including 4.0 m of 61.2 g/t Au (CZ97-0085).
• Drilling will follow at the Finn zone where up to 2,000 metres are planned. Holes are designed to evaluate the extent and continuity of high-grade and bulk-tonnage gold-silver mineralization. Historical highlight intercepts include:
  • 35.7 m of 7.26 g/t Au and 94 g/t Ag, including 1.0 m of 215.4 g/t Au and 308 g/t Ag (JD95-0472);
  • 45.0 m of 3.02 g/t Au and 143 g/t Ag, including 5.0 m of 8.18 g/t Au and 918 g/t Ag (JD95-0762);
  • 20.85 m of 8.76 g/t Au and 68 g/t Ag, including 11.0 m of 15.1 g/t Au and 108 g/t Ag (JD95-0972);
  • 22.0 m of 6.32 g/t Au and 46 g/t Ag, including 12.6 m of 10.8 g/t Au and 66 g/t Ag (JD12-0033).
• Project-wide exploration activities focused on drill target refinement are continuing, including:
  • Over 20 line kilometres of induced polarization geophysics have been completed along the JD porphyry trend. Infill surveying across the Finn to Creek corridor is set to commence in the coming weeks.
  • Over 1,600 soil samples have been collected across the Belle South grid, the southern extent of the JD porphyry trend and the Kadah grid near the Finn to Creek corridor.
  • Geological mapping and prospecting are continuing with a current focus on McClair Creek, which transects the JD porphyry trend, as well as the McClair East area.

"Our fully funded $6-million exploration program designed to systematically advance and expand the gold-silver targets at JD is progressing nicely," said Niel Marotta, chief executive officer of Sun Summit Minerals. "We have made terrific progress at Creek zone. We are excited about the upcoming drilling at the Finn zone, where we plan to test the extent of gold mineralization, while also investigating a zone of strong silver mineralization, recently modelled through our comprehensive compilation efforts. We expect to begin reporting results from drilling completed at the Creek zone in the coming weeks, with results from additional targets to follow."

2025 JD exploration program

The primary exploration goals at JD in 2025 are to advance and expand the Creek and Finn gold-silver targets and to generate and refine new priority targets across the project. Work is currently focused on the highly prospective 4.5-kilometre-long epithermal-related Finn to Creek corridor, as well as the 12-kilometre-long JD porphyry trend.

Drilling update

Over 3,100 metres of drilling has been completed at the Creek zone with holes collared along a 500-metre northwest-southeast trend. Ten holes investigated the extent and continuity of near-surface, high-grade and bulk-tonnage gold mineralization (for example, 122.53 m of 2.11 g/t Au, including 1.5 of 121.0 g/t Au, in CZ-24-0047 and 22.0 m of 11.7 g/t Au, including 4.0 m of 61.2 g/t Au, in CZ97-0085). Holes were designed to systematically test the vein-controlling structures on 50- to 100-metre pierce points covering a strike length of over 500 metres and a downdip extent of over 200 metres.

Up to 2,000 metres of drilling is planned at the Finn zone with holes designed to investigate the downdip strike extent and continuity of near-surface, high-grade and bulk-tonnage gold-silver mineralization (for example, 35.7 m of 7.26 g/t Au and 94 g/t Ag, including 1.0 m of 215.4 g/t Au and 308 g/t Ag, in JD95-0472 and 20.85 m of 8.76 g/t Au and 68 g/t Ag, including 11.0 m of 15.1 g/t Au and 108 g/t Ag, in JD95-0972).

Modelling of recently compiled historical Finn zone drill data has outlined a compelling zone of strong silver-gold-base-metal mineralization (for example, 45.0 m of 3.02 g/t Au and 136 g/t Ag, including 5.0 m of 8.18 g/t Au and 918 g/t Ag, in JD95-0762). Planned drilling at Finn will also be aimed at investigating the structural and/or lithological controls on this gold-associated, silver-rich mineralization.

Target generation update: Project-wide exploration activities aimed at target generation and drill target refinement are continuing, including:

• Over 20 line km of induced polarization geophysical surveying has been completed along the JD porphyry trend east of the Finn zone. Additional surveying is set to commence in the coming weeks covering parts of the Finn to Creek corridor to infill historical gaps.
• Over 1,600 soil samples have been collected across the Belle South grid, the southern extent of the porphyry trend and the Kadah grid, which cover a highly prospective area south of the Finn to Creek corridor lacking historical soil coverage.
• Geological mapping and prospecting are continuing with a current focus on McClair Creek, which transects the JD porphyry trend. Mapping has also been completed along the Finn to Creek corridor, as well as the Oxide Peak West target. Mapping will continue east toward the East McClair copper target.

Timeline: Drilling and complementary exploration activities are anticipated to continue into early October. Soil and rock samples and drill core samples from the first eight holes at Creek zone have been submitted to the lab for assay analyses. Results will be released once compiled and interpreted.

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. Some technical information contained in this 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 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 project covers an area of over 15,000 hectares, and is in close proximity to active exploration and development projects, such as Thesis Gold's Lawyers and Ranch projects, TDG Gold's Baker-Shasta projects, Amarc Resource's Aurora project, and Centerra's Gold'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 diverse portfolio includes the JD and Theory projects in the Toodoggone region of north-central B.C. and the Buck project in central B.C.

We seek Safe Harbor.