Tower drills 2.57 g/t Au over 18.8 m at Rabbit North

Vancouver, British Columbia--(Newsfile Corp. - August 13, 2026) - Tower Resources Ltd. (TSXV: TWR) (" Tower " or the " Company ") is pleased to report the gold results for the first three holes of the June diamond drilling program on the Company's Rabbit North property near Kamloops, B.C. (see Fig. 1).

Drilling Summary

Eight holes totaling 2303.5 m were drilled. Three of the four intended targets ( see April 23, 2026 press release ) were tested, all in the main discovery area. The historical Au intersection further east in percussion hole No. 1990-05 (see Fig. 2) was not followed up because the risk of forest fires was too high to access the site.

The assay results presented herein are from the first three drill holes, Nos. RN26-074 to 076, which targeted the possible western extension of the Thunder gold zone toward the Durand Creek Fault (see Fig. 2). The geologically older Rainbow porphyry Cu-Au-Mo breccia pipe, which occurs in the same area, was also intersected but was not specifically targeted.

Figure 1 – Location of the Rabbit North property showing the geology of the central part and the major shear structures controlling Tower's gold discoveries. These shear zones are roughly coincident with more recent graben fault valleys that have been infilled by Chilcotin basalt flows. The yellow stars mark the locations of the main Au intersections in the initial discovery holes on the gold zones. Areas targeted in the current drill program are highlighted.

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Figure 2 – Locations of Holes 074 to 076 relative to the Thunder gold zone. See Fig. 1 for bedrock lithologies and expanded legend.

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