Thunder Gold drills 1.793 g/t Au over 45.0 m at UV Target

Thunder Bay, Ontario--(Newsfile Corp. - July 16, 2026) - Thunder Gold Corp. (TSXV: TGOL) (FSE: Z25) (OTCQB: TGOLF) (" Thunder Gold " or the " Company ") is pleased to announce exploration diamond drill results from the UV Target, at the Company's flagship Tower Mountain Property, 40 kilometres west of Thunder Bay, Ontario. Six (6) holes totaling 2,937 metres targeted the down-dip projection of the main mineralized trend observed in historical diamond drill holes completed from 2002 to 2005. Three (3) holes, TM26-198, 199 and 200 targeted the projected trend 100 to 150 metres below the current bottom of the optimized pit constraining the Company's 2026 Mineral Resource Estimate (the " MRE ").

The remaining holes targeted gaps in the MRE where there was insufficient drill data to estimate gold grades. Key results from the program include: TM26-204: 142.0 metres averaging 0.668 g/t Au, including 45.0 metres averaging 1.793 g/t Au and 1.5 metres averaging 44.100 g/t Au, within and immediately adjacent to the 2026 MRE optimized pit limit. TM26-200: 238.5 metres averaging 0.259 g/t Au from 361.5 metres to 600.0 metres, consistent with historical results in TM11-63, TM04-13 and TM04-12.

TM26-198: 39.0 metres averaging 0.320 g/t Au within 100 metres of surface, in a new mineralized zone immediately adjacent to the current optimized pit limit. TM26-203: 13.5 metres averaging 0.612 g/t Au from 3.0 to 16.5 metres depth in previously un-estimated rock. Full assay results, including hole locations, orientations and section references, are provided in Tables 1 and 2 below.

Drilling has confirmed that the main mineralized trend at UV continues at depth and remains open, with grades and widths consistent with historical drilling and the 2026 MRE. Importantly, multiple new zones of mineralization above the 2026 MRE cut-off grade of 0.19 g/t Au were intersected in areas p