Solaris Resources

While the Company has been successful in securing financing to date, there can be no assurances that debt facilities, future equity financing, or strategic alternatives will be available on acceptable terms to the Company or at all.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

FINANCE COST Three months ended June 30, Six months ended June 30, 2026 2025 2026 2025 Interest expense – deferred revenue $ 1,574 $ 462 $ 2,655 $ 462 Interest expense – loans and borrowings - 1,514 - 3,020 Other 29 30 53 72 $ 1,603 $ 2,006 $ 2,708 $ 3,554 14.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

In order to maintain the capital structure, the Company may, from time to time, issue or buy back equity, issue or repay debt, or sell assets.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

The Company, upon approval from its Board, intends to balance its overall capital structure through a combination of equity financing, debt and other forms of financing.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

The material weakness related to the design and implementation of certain controls at a sufficient level of precision within our financial statement close process and related disclosures, including: (i) recording of payroll expenses in general and administrative expenses, (ii) foreign currency calculations related to retranslation of deferred revenue to the functional currency and amortization of loan arrangement fees, (iii) disclosure and presentation of capital expenditures on exploration and evaluation assets within the condensed consolidated interim statement of cash flows, and (iv) calculation of the tax provision.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

The Company’s ability to continue as a going concern is dependent upon the successful execution of its business plan, meeting certain Warintza project milestones, raising additional capital and/or evaluating strategic alternatives for its mineral property interests.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

While the Company has been successful in securing financing to date, there can be no assurances that debt facilities, future equity financing, or strategic alternatives will be available on acceptable terms to the Company or at all.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

d) Tamarugo Tamarugo is a grass-roots copper porphyry target strategically located in northern Chile approximately 85 kilometres northeast of Copiapo and approximately 65 kilometres southwest of Codelco’s El Salvador Copper Mine.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

The decrease in the period represents a guarantee paid to ENAMI EP relating to the expansion of the Warintza district (Note 4).

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

Solaris is committed to responsible mining practices that prioritize environmental stewardship, shared value creation, and long-term benefits for local communities and stakeholders.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

As a result, material uncertainty exists that casts significant doubt about the Company’s ability to continue as a going concern.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

The accounting policies, significant judgments made by management in applying these policies and key sources of estimation uncertainty are the same as those applied in the Company’s annual audited consolidated financial statements for the year ended December 31, 2025.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

Management’s Discussion and Analysis For the three and six months ended June 30, 2026 and 2025 (Expressed in thousands of United States dollars, unless otherwise noted) The forward-looking statements are based on a number of assumptions which, while considered reasonable by the Company, are subject to risks and uncertainties, including assumptions made about the Company satisfying all closing conditions for the unclosed portion of the $200,000 financing with RGLD Gold AG (“Royal Gold”), a subsidiary of Royal Gold, Inc.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

The Company cautions readers that forward-looking statements involve and are subject to known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements to differ materially from those expressed in or implied by such forward-looking statements and forward-looking statements are not guarantees of future results, performance or achievement.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

Although the Company has attempted to identify important risks, uncertainties and other factors that could cause actual performance, achievements, actions, events, results or conditions to differ materially from those expressed in or implied by the forward-looking information, there may be other risks, uncertainties and other factors that cause performance, achievements, actions, events, results or conditions to differ from those anticipated, estimated or intended.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026

The Company’s assessment of its ability to continue as a going concern requires significant judgement about whether there are material uncertainties that may cast significant doubt about the Company’s ability to continue as a going concern.

SEC original ↗Solaris Resources — Earnings release (6-K exhibit)EX-99Aug 5, 2026