Mr. John-Mark Staude reports

RIVERSIDE RESOURCES EXPANDS RARE EARTH ELEMENTS PROGRAM INCLUDING AT REVEL PROJECT, BRITISH COLUMBIA

Riverside Resources Inc. has expanded its rare earth element program in British Columbia with work advancing at the Revel project and additional target generation across Canada and Mexico. Riverside has identified an extensive carbonatite unit at the Revel project and is prioritizing systematic work to refine exploration targets.

"Rare earth elements have been one of the focuses for Riverside, and, with the increasing global demand for critical minerals, Riverside's generative approach is well suited in the hunt for these elements," said John-Mark Staude, chief executive officer of Riverside Resources. "For over 18 years, we have executed a disciplined project generator model that turns geologic ideas into tangible assets for shareholders, and Revel fits that playbook. We see a near-to-infrastructure-accessible carbonatite system with large (several kilometres) scale potential and are advancing this project with staged work programs that tighten the geology, derisk access and set up clear next stages of mineral exploration. In parallel, we continue to build a pipeline of critical mineral assets that can be explored, partnered, optioned or spun out, as we have done before with Capitan Silver and most recently with the Blue Jay Gold share distribution in May, 2025. Our aim is simple: make mineral discoveries and create value for stakeholders. We develop optionality, limit dilution and convert technical progress into transactions and retained royalties as we progress discovery and development including the focus on REE."

Program highlights:

• Focus on Revel, a carbonatite-hosted REE target in Southern British Columbia with access north of the Trans-Canada Highway;
• Expansion of fieldwork to include detailed mapping, spectral and geochemical sampling, and ground geophysics to vector toward high-grade REE zones;
• Initiation of baseline and permit planning to enable first-pass drilling consistent with the exploration results;
• Parallel generative work on additional REE opportunities in Canada and Mexico to seed future transactions.

Strategic context and Riverside business model

Rare earth elements remain designated as critical minerals by the United States and Canada. Riverside efficiently operates a project generator model focused on discovery, partnerships and selective spinouts. The company advances targets through early exploration to a decision point, then seeks partner financing, option agreements or corporate transactions while retaining equity or royalty exposure. This approach has delivered value over 18 years through completed spinouts, partner-financed programs in Canada and Mexico, and the distribution of Blue Jay Gold shares to Riverside shareholders in 2025 at a five for one ratio. The REE program at Revel and the broader critical mineral pipeline are being advanced within this same framework to position assets for partnerships, drilling or future spinouts.

Qualified person and quality assurance/quality control

The scientific and technical data contained in this news release pertaining to the project were reviewed and approved by Freeman Smith, PGeo, a non-independent qualified person to Riverside, who is responsible for ensuring that the information provided in this news release is accurate and who acts as a qualified person under National Instrument 43-101 (Standards of Disclosure for Mineral Projects).

About Riverside Resources Inc.

Riverside is a well-financed exploration company driven by value generation and discovery. The company has a solid balance sheet with no debt and fewer than 75 million shares outstanding with a strong portfolio of gold-silver and copper assets and royalties in North America. Riverside has extensive experience and knowledge operating in Mexico and Canada, and leverages its large database to generate a portfolio of prospective mineral properties. Riverside has properties available for option.

We seek Safe Harbor.