Graycliff drills 7.3 m of 10.51 g/t Au at Shakespeare, Ontario

Toronto, Ontario--(Newsfile Corp. - July 7, 2026) - Graycliff Exploration Limited  (CSE: GRAY) (OTCQB: GRYCF) (FSE: GE0) (the " Company " or " Graycliff ") announces additional high grade gold assay results from metallurgical drill holes B and C (see press release dated June 2, 2026). Drill core assay results include an interval of 10.5 grams per tonne ("g/t") gold over a 7.3 metre ("m") interval in drill hole B, with a 1.0 m intersection of 43.50 g/t gold as well as a 1.0 m intersection of 45.90 g/t gold, as shown in the following table and on the accompanying vertical cross section. The three metallurgical drill holes were completed using larger diameter HQ core equipment and were targeted to provide larger residual material for metallurgical and mineralogical investigation from a variety of material in the gold mineralized zone including lower grade, moderate grade and high-grade mineralization.

Extremely high-grade gold mineralization was intersected in drill hole A with the assay results reported June 2 that highlighted an interval grading 454.34 g/t gold over a 7.0 m interval. Mineralization in hole C was targeted at more near surface lower grade mineralization and this targeted mineralization returned a 2.0 m interval grading 1.76 g/t gold at a depth of 66.0 m. Table 1 - Gold Assay Results from Holes B & C   1 Reported intervals are down-hole lengths and not true thicknesses.

True widths of the mineralization cannot be determined at this time due to the early-stage nature of the program. 2 Length-weighted average grades are calculated using un-capped gold assay data. All three holes (A, B & C) drilled were located at 433802 E and 5126912 N with an azimuth of 330. The dips and lengths of the holes were as follows: hole A was -80 degrees to a depth of 149 m; hole B was -73 degrees to a depth of 117 m; and, hole C was