Questcorp defines near-surface gold corridor at Union Norte

Vancouver, British Columbia--(Newsfile Corp. - September 9, 2026) - Questcorp Mining Inc. (CSE: QQQ) (OTCQB: QQCMF) (FSE: D910) (the "Company" or "Questcorp") , is pleased to report results from the Phase 2A summer 2026 core drilling campaign, operated by Riverside Resources Inc. ("Riverside") on the Company's behalf, at the La Union Project in northwestern Sonora, Mexico. Drilling intersected near-surface gold and polymetallic mineralization at Union Norte, confirmed the continuation of the historic Sproul manto/replacement system at Union Mine, and further advanced several priority targets ahead of the upcoming Phase 2B drill program. Questcorp enters Phase 2B with a district-scale target inventory that management believes provides multiple independent opportunities for discovery across a single land package.

Phase 2A Highlights

UND26-015 - Union Norte: 14.60 m grading 0.45 g/t AuEq from 1.00 m depth, including 5.60 m grading 0.96 g/t AuEq and 4.60 m grading 1.09 g/t AuEq. The hole intersected the interpreted NNW-trending mineralized feeder structure at shallow depth, providing a clear target for follow-up drilling along strike and down dip.

UND26-014 - Union Norte: 9.10 m grading 0.76 g/t AuEq from 1.90 m depth, including 4.50 m grading 1.18 g/t AuEq and 1.50 m grading 3.38 g/t AuEq. Together with UND26-015, the result confirms continuity of the near-surface mineralized structure between adjacent drill sections.

Union Mine: UND26-013 intersected the interpreted continuation of the historic Sproul manto/replacement body south of historic workings. Anomalous lead and zinc values support the geological interpretation and provide vectors for deeper follow-up drilling toward the interpreted feeder structure beneath the Union Mine.

Luis Hill: Induced polarization ("IP") surveying delineated a large chargeability anomaly extending for more than 1 k