Riverside Resources and Questcorp Complete Expanded Aeromagnetic Drone Survey at La Union Project

Vancouver, British Columbia--(Newsfile Corp. - May 21, 2026) - Riverside Resources Inc. (TSXV: RRI) (OTCQB: RVSDF) (FSE: 5YY0) ("Riverside" or the "Company"), with partner Questcorp, the Company has completed an expanded aeromagnetic drone survey at the La Union Project in Sonora, Mexico. The new data refines the drill targets and improves understanding of district-scale geologic structures.