HIGHLIGHTS OF THE PRESS RELEASE:

• Final US$50 Million Tranche Received – Receipt of the third and final tranche completes the US$200 million non-dilutive funding package with Royal Gold.
• Strong Balance Sheet – Solaris reported cash and cash equivalents of US$54 million as at June 30, 2026, with the additional US$50 million further strengthening the Company’s financial position.
• Advancing Warintza Toward Final Permits – The strengthened balance sheet provides the financial capacity to continue advancing the workstreams required to progress Warintza toward a fully permitted project.

Solaris Resources Inc. (TSX: SLS) (NYSE: SLSR) is pleased to announce that it has received the third and final US$50 million tranche under its US$200 million funding package with RGLD Gold AG, a wholly owned subsidiary of Royal Gold, Inc.

Receipt of the final tranche completes the three scheduled instalments under the funding package, comprising an initial US$100 million tranche and two subsequent US$50 million tranches.

The Company reported cash and cash equivalents of US$54 million as at June 30, 2026. The additional US$50 million further strengthens Solaris’ balance sheet and provides additional financial flexibility to advance its social, permitting, technical and operational workstreams in parallel as it progresses Warintza toward a fully permitted project.

Matthew Rowlinson, President and Chief Executive Officer of Solaris, commented: “Receipt of the final tranche completes the US$200 million Royal Gold funding package and materially strengthens our liquidity as we advance Warintza’s social, permitting and technical workstreams. The package has provided substantial capital without an equity issuance while preserving strategic flexibility. We thank Royal Gold for their partnership and continued support as we responsibly advance Warintza.”

Royal Gold Funding Package

The US$200 million non-dilutive funding package was entered into in May 2025 and comprises a gold stream and net smelter return royalty. The funding was payable in three instalments: US$100 million at closing, US$50 million following publication of the Pre-Feasibility Study and receipt of the Environmental Impact Assessment technical approval, and the final US$50 million tranche following completion of the required security filings.

About Solaris Resources Inc.

Solaris Resources is a copper-gold exploration and development company advancing a portfolio of high-quality assets across the Americas. Its flagship asset is the 100%-owned Warintza copper porphyry Project in southeast Ecuador. Solaris is committed to responsible mining practices that prioritize environmental stewardship, shared value creation, and long-term benefits for local communities and stakeholders.