Mr. Daniel Earle reports

SOLARIS REPORTS 105M OF 0.60% CUEQ AND 132M OF 0.60% CUEQ FROM NEAR SURFACE; CONTINUED EXPANSION OF WARINTZA EAST AND WARINTZA SOUTHEAST

Solaris Resources Inc. has released assay results from a series of holes aimed at growing mineral resources at the Warintza project in southeastern Ecuador. Highlights are listed herein, with results presented in an attached table.

Highlights

Warintza East was discovered in July, 2021, with eight drill holes included in the Warintza Central mineral resource estimate (MRE) in April, 2022. Subsequent drilling has significantly expanded the dimensions of the deposit, with drilling targeting further resource growth to the north, northeast, east and southwest:

• SLSE-27 was collared on the eastern limit of the Warintza East drill grid and drilled vertically to the limit of the KD-200 rig, returning 132 metres of 0.60 per cent copper equivalent from near surface within a broader interval of 246 m of 0.55 per cent CuEq, bottoming in mineralization and remaining open at depth.
• SLSE-26 was collared 100 m north of SLSE-27 and drilled vertically to the limit of the KD-200 rig, returning 212 m of 0.52 per cent CuEq within a broader interval of 310 m of 0.45 per cent CuEq from surface, ending in mineralization and remaining open at depth.
• Stepout drilling and deeper drilling are planned, with two platforms under construction, and a further six scheduled to extend the drilling grid to the north, northeast, east and southwest.

Warintza Southeast was discovered in May, 2023, as a distinct, higher-grade porphyry centre to the south of Warintza East beyond the limit of the MRE and offers potential to add higher-grade mineral resources, with deeper drilling under way and significant stepouts to the southeast planned:

• These holes follow discovery hole SLSE-28, which returned an open-ended interval of 301 m of 0.65 per cent CuEq in a favourable andesite porphyry host (see press release dated June 1, 2023), and help establish the geometry of the upper part of the system and vectors for further drilling.
• SLSE-29 was collared east of SLSE-28 and drilled southeast to the limit of the KD-200 rig through a less-receptive intermineral diorite porphyry, returning 175 m of 0.50 per cent CuEq within 289 m of 0.40 per cent CuEq from near surface, with the final 105 m averaging 0.60 per cent CuEq and open to depth.
• SLSE-30 was collared west of discovery hole SLSE-28 and drilled southeast to the limit of the KD-200 rig, returning 30 m of 0.53 per cent CuEq from near surface within a broader interval of 275 m of 0.48 per cent CuEq, with the final 41 m averaging 0.60 per cent CuEq and remaining open to depth.
• Deeper drilling targeting extensions of higher-grade intervals noted at the end of each hole is under way, and two additional platforms are under construction for stepouts 250 m and 500 m to the southeast, where XRF (X-ray fluorescence) values of 0.3 per cent to 0.5 per cent Cu in andesite porphyry were recorded.

Technical information and quality assurance/quality control

Sample assay results have been independently monitored through a quality control/quality assurance 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 in Quito, Ecuador. Drill core is cut in half on site, and samples are securely transported to ALS in Quito. Sample pulps are sent to ALS in Lima, Peru, and Vancouver, Canada, for analysis. Total copper and molybdenum 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 the Bureau Veritas laboratory in Lima, Peru. Both ALS and Bureau Veritas are independent of Solaris. XRF is a non-destructive analytical technique used to determine the elemental composition of materials such as drill core. XRF analyzers determine the chemistry of a sample by measuring the fluorescent (or secondary) X-ray emitted from a sample when it is excited by a primary X-ray source. It should be noted that the results only provide an indication of the amount of copper, molybdenum and gold present. Certified assaying of the core samples is still required to accurately determine the amount of base metal and precious metal mineralization. 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 drill hole data have been verified by Jorge Fierro, MSc, DIC, PG, using data validation and quality assurance procedures under high industry standards.

Qualified person

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

About Solaris Resources Inc.

Solaris is a multiasset exploration company, advancing a portfolio of copper and gold assets in the Americas, including: its primary focus, a world-class, large-scale resource with expansion and discovery potential at the Warintza project in Ecuador; discovery potential at its Ricardo project and optioned/owned grassroots Tamarugo project in Chile; discovery potential at its Capricho and Paco Orco projects in Peru; 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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