Mr. John-Mark Staude reports

RIVERSIDE RESOURCES EXECUTES OPTION AGREEMENT FOR THE REVEL CARBONATITE RARE EARTH ELEMENT PROJECT, BRITISH COLUMBIA

Riverside Resources Inc. has entered into an option agreement with 1575540 B.C. Ltd., a private British Columbia company, pursuant to which the optionee may acquire a 100-per-cent interest in Riverside's Revel carbonatite rare earth element (REE) project, located approximately 20 kilometres from the community of Seymour Arm, north of Revelstoke, in southeastern British Columbia, with Riverside retaining a 3-per-cent net smelter return (NSR) royalty, if the option is completed and if not the project returns 100 per cent to Riverside.

"Securing this option agreement for Revel is an excellent step forward for Riverside's REE portfolio and we can immediately move forward with a high-resolution geophysical survey of the project with partner funding to refine and expand the targets," said John-Mark Staude, president and chief executive officer of Riverside Resources. "The agreement brings dedicated funding to advance the 12-kilometre-long Revel carbonatite REE system while allowing our team to remain involved in the program and building value across our broader portfolio of British Columbia and Mexico projects. By retaining a 3-per-cent NSR, Riverside preserves meaningful long-term exposure to the discovery and development potential of the Revel project."

Terms of the option agreement

Under the terms of the option agreement, the optionee may acquire a 100-per-cent interest in the Revel project by making aggregate cash payments to Riverside totalling $450,000 and incurring aggregate exploration expenditures on the project totalling up to $2.2-million in each case in accordance with the milestone schedule set out below and over a five-year option period commencing on Feb. 18, 2026, as the effective date of the option agreement.

Upon exercise of the option and acquisition of a 100-per-cent interest in the Revel project, the optionee will grant to Riverside a 3-per-cent NSR royalty on all commercial production from the project on the terms set out in the NSR royalty agreement entered into concurrently with the option agreement. The royalty agreement provides the optionee with two buy-down rights: (i) a first right to purchase a 0.5-per-cent royalty of the NSR royalty for $1-million (U.S.) at any time prior to Jan. 1, 2033, reducing the royalty to 2.5 per cent; and (ii) a second right, exercisable only if the first buy-down has been exercised, to purchase an additional 1.0-per-cent royalty of the NSR royalty for $2-million (U.S.) at any time prior to Jan. 1, 2035, reducing the royalty to 1.5 per cent.

Riverside's exploration team will continue to provide technical input and oversight on the Revel project during the option period, with the optionee financing programs designed to advance the project toward drill testing of the carbonatite-style rare earth system.

About the Revel project

The Revel project is located approximately 20 kilometres from the community of Seymour Arm and north of Revelstoke, B.C., within a highly prospective carbonatite belt. The project covers part of the Mount Grace carbonatite, which is known to host rare earth element mineralization, and Riverside has outlined a 12-kilometre-long carbonatite-style rare earth system at Revel that remains undrilled.

The Revel claims are located on the northeastern margin of the Frenchman Cap gneiss dome, comprising part of the Shuswap Metamorphic terrain. The core gneisses are overlain by allochthonous cover rocks that host both extrusive and intrusive carbonatites and form part of the Monashee cover sequence. Recent exploration at Revel has included detailed mapping, spectral and geochemical sampling, and ground geophysics designed to vector toward higher-grade REE zones in advance of drill testing.

The next work will likely be airborne geophysics and field exploration work during the summer of 2026 with financing partner providing the capital for these efforts. Additional information on the Revel project is available on Riverside's website.

Qualified person and QA/QC (quality assurance/quality control)

The scientific and technical data contained in this news release pertaining to the project was reviewed and approved by Freeman Smith, PGeo, a non-independent qualified person to Riverside Resources, 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 strong balance sheet, no debt and tight share structure with a strong portfolio of gold-silver, copper and REE assets and royalties in North America.

We seek Safe Harbor.