Mr. Adam Travis reports

COAST COPPER MAKES NEW HIGH-GRADE GOLD DISCOVERY AT EMPIRE MINE PROPERTY

Coast Copper Corp. has discovered a new mineral showing (B3) which is located approximately 700 metres (m) to the south of the Merry Widow pit on the optioned Empire mine property on northern Vancouver Island, B.C. The B3 showing was discovered during Coast Copper's summer 2023 exploration field program which included prospecting, soil and rock sampling across areas of interest, taking samples from one of the historical magnetite waste dumps and hosting several site visits with individuals from the B.C. Geological Survey (BCGS) and the University of Victoria.

Adam Travis, Coast Copper chief executive officer, comments: "As announced on June 12, 2023, several areas of interest were noted to potentially expand the property's mineral resource estimate (announced May 23, 2023). The new B3 discovery as well as the waste dump were not included in the potential expansion but going forward will be included as areas that could potentially add additional resources to the 2023 MRE. While on site, we also field-checked and confirmed the proposed drill locations for the next drill program. These drill locations are mostly located within the areas noted in our June 12 news release, which could potentially double the 2023 MRE, as well as a few additional exploration holes proposed in new areas."

B3 showing (new gold and tellurium discovery)

A total of 67 soil samples were taken around the B3 showing with two rock and four chip samples taken from the B3 outcrop itself. Soil sampling around the B3 showing has outlined an area roughly 100 metres by 150 metres with gold-in-soil values of greater than 80 parts per billion (ppb). Additional highlights of soil sampling taken around the B3 area include 3,931 ppb Au and 1,410 ppb tellurium (Te) in sample MWS2023-018 and 2,518 ppb Au and 740 ppb Te in sample MWS2023-094. Highlights of soil samples taken between the Bluebird 2 showing and the new B3 discovery include 2,194 ppb Au and 1,340 ppb Te in sample MWS2023-042. These samples warrant further follow-up.

Rock sampling at the B3 outcrop has returned results up to 51.60 grams per tonne Au, 30.66 g/t Te, 0.25 per cent cobalt and 50.52 g/t silver. The B3 showing confirms that despite the history of iron ore exploration and mining along the Merry Widow trend, limited exploration has been given to areas outside of obvious massive iron and copper sulphides, which Coast Copper's work is now showing can return very significant gold and rare earth element values peripheral to these iron and copper skarns.

Mr. Travis further comments: "Once again we are pleased with the fact that we are still able to make new discoveries on trend on the property. Even though this property has been explored and mined for over 100 years, the areas outside the core mine area remain heavily underexplored."

Additional discoveries meriting follow-up

In addition to the sampling completed around the B3 showing, a total of 42 soil and 10 rock samples were taken while prospecting areas of interest from the Whiskey Jack showing to the Battle Mountain showing (approximately 2.75 kilometres distance). Some notable results from across the property include a rock sample collected from outcrop on the southeastern margin of the South pit which returned values of 2.9 g/t Au and 4.5 per cent Cu. This result further reinforces the continuation of high-grade gold and copper mineralization along the thrust trend to the south of the current resource.

A follow-up sample from a mineralized dike near the Bluebird 1 occurrence returned values of 7.1 g/t Au and 6.5 per cent Cu, confirming presence of high-grade mineralized intrusive structures in the vicinity of known mineral occurrences.

Ground conditions on site can be very challenging, where places of thick underbrush and dense organic layers appear to have inhibited the collection of good soil samples by previous operators. As evidenced by the company's more diligent soil sampling of proper soil horizons, it is seeing significantly higher metal values in many places.

Further work will include following up on a 350 m by 550 m long gold-in-soil anomaly along the northerly trending contact of the Merry Widow pluton with Battle Mountain that has only seen limited exploration.

Merry Widow historical waste dump sampling

Several waste dumps have previously been identified across the Merry Widow mine area with a total material volume estimated at 2.8 million tonnes. One of the historical dumps (containing an estimated 550 kilotons of material) was initially sampled during the program by collecting talus fines from eight locations on the dump. Assay results for these samples returned grades ranging from 0.05 to 0.71 g/t Au, 0.04 to 0.28 per cent Cu and 15.2 to 35.8 per cent iron. The average grade for the eight dump samples was 0.23 g/t Au, 0.14 per cent Cu and 22.3 per cent Fe.

Although preliminary, these results are encouraging given the high iron (magnetite), gold and copper results for material designated as waste during the 1957 to 1967 mining operations. To properly characterize the material in these dumps and to help determine the potential economic significance, additional and more substantial sampling programs will need to be carried out. Preliminary waste dump sampling was initiated to begin characterization of the waste dump material, composition and grade for future consideration as a potential processable resource.

Government collaboration/critical minerals study

During the summer program, Coast Copper hosted several site visits with members of both the BCGS and the University of Victoria with a focus on the rare earth and critical metals potential at the property. Coast Copper will continue to collaborate with the government and academia as it works toward updating and characterizing the mineral deposit model types.

Mr. Travis comments: "The work completed by Coast Copper to date is suggestive of a larger system than previously thought that may contain zonation patterns with other metals. The new B3 discovery is an excellent example of gold-rich zones that are underexplored and may occur peripherally to the better-known iron and copper skarn occurrences."

Quality assurance/quality control procedures

Soil samples were taken at 25 m spacings when possible and by up to 50 m spacings in areas of interest. All samples were taken from the B-horizon soil profile.

Sampling completed on the project in 2023 was supervised by on-site Coast Copper personnel and subcontractors which collected and tracked samples and implemented a full QA/QC program using blanks, standards and duplicates to monitor analytical accuracy and precision. The samples were sealed on site and shipped to MSA Labs in Langley, B.C., for analysis. MSA Labs' quality control system complies with global certifications for quality ISO9001:2008. Soil samples were dried and screened to 80 mesh and then analyzed in 20-gram samples with multielement inductively coupled plasma mass spectrometry aqua regia digestion (IMS-111). Rock samples were dried and crushed to 70 per cent passing two-millimetre mesh and split to 250-gram samples which were pulverized to 85 per cent passing 75 micrometres. The samples were then analyzed by a four-acid digestion multielement ICP-MS (IMS-131). Gold assaying was completed with FAS-415, a 30-gram fusion fire assay with atomic absorption spectroscopy finish with greater than 10 g/t Au assays completed with FAS-418, a 30-gram fusion fire assay with gravimetric finish. Silver assays greater than 100 g/t were completed with ICF-6Ag, four-acid, inductively coupled plasma atomic emission spectroscopy ore grade analysis. Copper assays greater than 10,000 parts per million (ppm) were completed with ICF-6Cu, four-acid, ICP-AES ore grade analysis. Zinc assays greater than 10,000 ppm were completed with ICF-6Zn, four-acid, ICP-AES ore grade analysis.

Qualified person

The technical information contained in this news release has been prepared, reviewed and approved by Wade Barnes, PGeo (British Columbia), Coast Copper's geological consultant and a qualified person within the context of the Canadian Securities Administrators' National Instrument 43-101 Standards of Disclosure for Mineral Projects.

About Coast Copper Corp.

Coast Copper's exploration focus is the optioned Empire mine property, located on northern Vancouver Island, B.C., which covers three historical open-pit mines and two past-producing underground mines that yielded iron, copper, gold and silver. Coast Copper's other properties include its 100-per-cent-owned Knob Hill NW property located on northern Vancouver Island, its Home Brew property in central B.C. and its Scottie West property located in the Golden Triangle of Northern B.C. Coast Copper's management team continues to review precious and base metals opportunities in western North America.

We seek Safe Harbor.