Hannan Metals Significantly Expands Gold Mineralization Width Six Fold at Previsto, All 148 Channel Samples Mineralized, Peru

About this update from Hannan Metals Ltd.

Vancouver, British Columbia--(Newsfile Corp. - June 3, 2026) - Hannan Metals Limited (TSXV: HAN) (OTC Pink: HANNF) ("Hannan" or the "Company") is pleased to report a material expansion of the high-grade gold zone at its 100% owned Previsto prospect, Peru. Following the previously reported expansion of the central high-grade area, the Company made the decision to continue work in the Previsto Central gold zone and expand sampled areas with an ongoing channel sampling campaign. The results continue to exceed expectations; this campaign led to an increase in the continuous mineralized channel width from the previously reported 15.5 m to 96.5 m laterally (estimated true width approximately 90 m) with peak grades of 7.1 g/t Au and channel intervals up to 96.5 m @ 0.6 g/t Au including 81 m at 0.5 g/t Au reported here. A second channel located 20 m to the north was extended to 30.2 m @ 1.0 g/t Au (estimated true width approximately 28 m), confirming mineralization continues along strike and across the system. Sampling to date has been limited to where outcrops are exposed in the jungle, and all sampled areas represent minimum dimensions and remain open in all directions. Key Points: Significant Scale Expansion: Continuous surface mineralization in channel length expanded from 15.5 m to 96.5 m (estimated true width approximately 90 m), confirming bulk-tonnage potential. Mineralized in all directions. All 148 channel samples and 1 panel sample returned gold mineralization across the 370 m x 70 m area, with peak grades of 7.1 g/t Au (Figure 4). The high-grade zone remains open to the east, west and south. Key channel results include: 96.5 m @ 0.6 g/t Au and 15 g/t Ag, including 81 m @ 0.5 g/t Au and 15 g/t Ag (new results), including: 1.0 m @ 7.1 g/t Au and 54 g/t Ag 6.7 m @ 1.7 g/t Au and 9 g/t Ag. 13.2 m @ 1.5 g/t Au and 13 g/t Ag, including: 3.7 m @ 4.1 g/t Au and 28 g/t Ag. Two distinct breccia units discovered across 40 m cumulative estimated true width hosting mineralization. Two texturally distinct breccias appear to host mineralization in the cement - the space between the clasts - indicating they were formed during the mineral event. This is consistent with the mineralization style at Cripple Creek, Colorado and delineates a sophisticated, zoned hydrothermal plumbing system consisting of the western matrix-supported core and the eastern clast-sup...

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