Mr. Daniel Earle reports

SOLARIS IDENTIFIES ADDITIONAL VEINS AS CELESTINA EPITHERMAL TARGET TAKES SHAPE; REPORTS 16,019 G/T SILVER AND 25.3 G/T GOLD IN FOLLOW-UP SAMPLING

Solaris Resources Inc. has provided an update on recent results from the Celestina target area as part of its continuing district exploration program. Celestina lies within the search domain for epithermal deposits east of the Warintza porphyry cluster and is defined by a 4.5-kilometre-by-three-kilometre area of hydrothermal alteration and elevated zinc, lead, arsenic and mercury values in soil.

Additional prospecting in an overburden-covered area outside of these anomalies has identified three parallel vein exposures in creek beds within 100 metres on either side of the original breccia outcrop (see press release dated June 25, 2024). Follow-up rock-chip sampling has returned high values of 16,019 grams per tonne silver and 25.3 grams per tonne gold, with other samples supporting the presence of an underlying silver-gold-base metal vein system.

The exposures that have been identified to date are located in a soft and chemically reactive mudstone unit that may have acted as a caprock to the hydrothermal system. The conceptual exploration target at Celestina therefore lies in the underlying volcanic rocks that had full exposure to the hydrothermal cell while also having the properties to support robust vein and fracture formation.

Continuing fieldwork is now focused on locating additional exposures that provide further views to the underlying vein system while expanding coverage to define its areal extent. More detailed mapping, sampling and alteration studies are aiming to better define zonation while nearby geotechnical drilling this month is expected to confirm the stratigraphic sequence. Together, these efforts will aid in establishing vectors to support site selection for initial reconnaissance drilling.

District exploration efforts in other target areas continue to progress with recent geotechnical drilling in the Caya-Mateo target area encountering epithermal clay alteration beneath overburden in a sandstone unit and high-temperature alteration in the underlying volcanics. Geotechnical drilling in the Mateo area encountered the same high-temperature alteration in volcanics with follow-up mapping and sampling programs planned to extend coverage farther southeast toward its interpreted core.

Technical information and quality assurance/quality control

Soil and rock sample assay results have been independently monitored through a QA/QC program that includes the insertion of blind certified reference materials (standards), blanks and field duplicate samples. Logging and sampling are completed at a secured company facility located on site. Sample pulps are sent to ALS Labs in Lima, Peru, and Vancouver, Canada, for analysis. Total copper and silver contents are determined by four-acid digestion with AAS finish. Gold is determined by fire assay of a 30-gram charge. In addition, selected pulp check samples are sent to Bureau Veritas in Lima, Peru. Both ALS Labs and Bureau Veritas are independent of Solaris. Solaris is not aware of any drilling, sampling, recovery or other factors that could materially affect the accuracy or reliability of the data referred to herein. The technical data have been verified by Jorge Fierro, MSc, DIC, PG, using data validation and quality assurance procedures under high industry standards. The verification activities included a search for factual errors, completeness of the lithological and assay data, and suitability of the primary data. As part of the database verification activities, the assay information and certificates obtained directly from the analytical laboratory have been examined as well.

Qualified person

The scientific and technical content of this press release has been reviewed and approved by Jorge Fierro, MSc, DIC, PG, vice-president, exploration, of Solaris, who is a qualified person as defined in National Instrument 43-101, Standards of Disclosure for Mineral Projects. Mr. Fierro is a registered professional geologist through the SME (registered member No. 4279075).

About Solaris Resources Inc.

Solaris is advancing a portfolio of copper and gold assets in the Americas, which includes a world-class copper resource with expansion and discovery potential at its Warintza project in Ecuador; a series of grassroots exploration projects with discovery potential in Peru and Chile; and significant leverage to increasing copper prices through its 60-per-cent interest in the La Verde joint venture project with a subsidiary of Teck Resources in Mexico.

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