Silver Bow Mining Reports Initial Assay Results From Drill Program

Silver Bow Mining Reports Initial Assay Results From Drill Program

Silver Bow Mining's First Drill Results Confirm Significant Critical Minerals Enrichment and Vein Extensions Well Beyond Current Inferred Mineral Resource Estimate

Silver Bow Mining Corp. (NYSE American: SBMT) (“Silver Bow Mining” or the “Company”) announced today the assay results from the first two drill holes of its 25,000-foot surface diamond drilling program at the Rainbow Block Project in Butte, Montana.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260622167188/en/ Figure 1. Map and inset of drill hole traces of SBM26-01 and SBM26-02 with surface projections of modeled veins and the inferred Mineral Resource Estimate.

Drill holes SBM26-01 and SBM26-02 comprise approximately 2,065 feet of diamond core drilling conducted above the water table. The results represent significant step outs from the existing inferred Mineral Resource Estimate as detailed in the Company’s S-K 1300 Technical Report Summary released May 2025 and updated February 2026. Drill hole SBM26-01 intersected mineralization from 640 to 1,980 feet beyond the current inferred Resource boundary along strike, while SBM26-02 extended from 930 to 2,270 feet beyond the boundary. Multiple veins intercepted in both holes lie entirely outside the current inferred Mineral Resource Estimate footprint, and in some cases, represent new veins which were previously unknown.