Pacifica Silver Drills 6.35 m of 2.94 g/t Au and 313 g/t Ag, Including 0.85 m of 9.27 g/t Au and 1,905 g/t Ag; Confirms Northern Extension of the Aguilareña Vein at the Claudia ProjectVancouver, British Columbia--(Newsfile Corp. - December 15, 2025) - Pacifica Silver Corp. (CSE: PSIL) (OTCQB: PAGFF) ("Pacifica Silver" or the "Company") is pleased to report assay results from the first 10 of 29 drill holes completed to date in the Company's Phase I, 8,000-metre drill program at its 100% owned Claudia Silver-Gold Project located in the historic El Papantón Mining District in Durango State, Mexico. Initial Phase I Drill HighlightsHole 25CLAU039D intersected 6.35 m of 2.94 g/t Au and 313 g/t Ag from 192.5 to 198.85 m, including:1.30 m of 6.40 g/t Au and 1,390 g/t Ag, including0.85 m of 9.27 g/t Au and 1,905 g/t AgHole 25CLAU037D intersected 6.55 m of 3.38 g/t Au and 74 g/t Ag from 116.95 to 123.5 m, including:3.45 m of 5.10 g/t Au and 74 g/t Ag Initial results feature 1,905 g/t Ag over 0.85 m in hole 25CLAU039D, the highest silver grade recorded since the property was consolidated in 1991. Results have also extended high-grade mineralization along the main Aguilareña vein system by more than 300 m north of historical underground workings and 55 m north of historical hole 21CLAU011D which intersected 4.05 m at an average of 10.54 g/t Au and 317 g/t Ag from 158.75 to 162.8 m (see Figure 1). In addition, drilling at the Guadalupana vein down-dip from historical drill holes has intersected wider vein intervals which include hydrothermal breccia facies with textures indicating multiple phases of hydrothermal fluid boiling at depth—a highly favourable setting for silver and gold mineralization. Core photos are included in this press release, with assay results pending. "We are thrilled to hit outstanding silver grades at the outset of our maiden drill campaign at the Claudia Project," stated Todd Anthony, CEO of Pacifica Silver. "Early results have also confirmed that high-grade mineralization at the Aguilareña vein extends over 300 metres north of historical underground workings, or more 700 metres north of the Aguilareña shaft and headframe. There is also clear evidence of improving silver and gold grades with increasing depth, which we are keen to follow up in our Phase II drill program.""Additionally, Phase I drilling has demonstrated that the Guadalupana vein increases in width down-dip below historical drilling, and these intercepts include significant, multi-stage hydrothermal breccia and vein fill that are highly indicative of mineralization. While assay results are pending on these holes, it is highly encouraging to see greater widths at this district-scale vein, which signals the potential for a new high-grade discovery along Guadalupana. With these compelling early successes and numerous high-priority targets yet to be tested, we are just getting started and are truly excited for what lies ahead," concluded Mr. Anthony.The Company expects to conclude its Phase I drill program by the end of December 2025 and commence Phase II drilling in January 2026 with three active drill rigs on site.Phase I Drill Program Summary & Discussion of Initial Drill Results As of December 12, a total of 7,992 metres has been drilled in 29 holes (Figure 1), with an average depth of approximately 260 metres per hole. This includes:3,584 metres in 15 holes at the Aguilareña vein; 2,285 metres in eight holes at the Guadalupana vein; and1,457 metres in six holes testing the Justina, West, Central and Pinolera veins.Silver and gold assay results for the first 10 holes are summarized in Table 1. Results are reported for holes corresponding to the following areas (Figure 1 - blue labels):Aguilareña - Tres Reyes vein: Holes 037D, 038D, 039D, 040D, 041D, 044D and 045DCentral and Justina veins: Holes 042D and 043D, respectivelyGuadalupana vein: Hole 046DThe Company is awaiting assay results from holes 047D through 066D (Figure 1 - black labels).Figure 1 - Map Showing Locations of 2025 Phase I Drill Program at Claudia ProjectTo view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/10814/278032_7c9fd68ef4b1882f_001full.jpgTable 1 - Significant Assay Results from Phase I Drill Program at Claudia ProjectHole IDFrom mTo mLength m*Au g/tAg g/tAgEq** g/tArea25CLAU037D61.8064.252.45ave0.4546 85 hanging wall veinincluding62.4562.800.35at1.15113 211 hanging wall veinand113.00123.5010.50at ave2.2951 248 Aguilareña veinincluding116.95123.506.55at ave3.3874 364 Aguilareña veinwhich contains116.95117.550.60at20.3081 1,827 Aguilareña vein25CLAU038D104.05107.353.30at ave0.7689 154 hanging wall veinincluding106.05106.850.80at0.64117 172 hanging wall veinand145.05145.600.55at0.9830 115 hanging wall veinlets and stockworkand154.90155.400.50at1.1216 112 hanging wall veinlets and stockworkand175.85176.901.05at1.0210 98 hanging wall veinlets and stockworkand181.10181.400.30at1.1834 135 hanging wall veinlets and stockworka