Questcorp and Riverside Resources Complete Complementary Geophysics Programs as Drilling Continues at La Union Project

About this update from Questcorp Mining, Inc.

Vancouver, British Columbia--(Newsfile Corp. - July 9, 2026) - Questcorp Mining Inc. (CSE: QQQ) (OTCQB: QQCMF) (FSE: D910) (the "Company" or "Questcorp") is pleased to announce the completion of the expanded drone magnetic and IP geophysical programs linked to the current drilling at the La Union Project, Sonora, Mexico. Geophysics targeted both known zones and new target areas defined in the H1 2026 surface program prior to drilling. Joint Venture partner Riverside Resources Inc., under the direction of CEO John-Mark Staude, continues to conduct the onsite exploration. Highlights Initial exploration efforts relied on surface mapping, geochemistry, and past mine activity as a guide. These more robust and expansive geophysical datasets help place Union's discovery potential in a larger regional context, similar to major deposits in Arizona and Sonora where these tools have proven effective at that scale: "With the IP survey now complete, combined with the processed aeromagnetic data, we have an expanded view of the Union Project's targets and structural framework, both at depth and along strike from current drilling," said John-Mark Staude, President and CEO, Riverside Resources Inc. "Our teams are in the field continuing Phase 2 drilling, and this data is immediately helping us expand targeting and prioritize the project's robust set of targets. The program is going well, and our teams are processing drill core and sending samples to the laboratory for assays. We're also now using the new geophysics to put our surface geology observations into a mineralization targeting context, helping focus our efforts toward discovering high-grade gold and base metals similar to what was previously mined here, now with geophysics to help image potential source targets at depth."

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