Widest and Highest-Grade Caesium Intercepts to Date at Vega including 28.0 m at 8.05% Cs2O and 2.2 m at 26.48% Cs2O

Widest and Highest-Grade Caesium Intercepts to Date at Vega including 28.0 m at 8.05% Cs2O and 2.2 m at 26.48% Cs2O PR Newswire MONTREAL, Feb. 3, 2026 MONTREAL, Feb. 3, 2026 /PRNewswire/ - February 4, 2026 - Sydney, Australia Highlights Widest and highest-grade caesium intercepts reported to date at theVega Zone: 28.0 m at 8.05%Cs2O including 18.3 m at 11.84%Cs2O (CV25-948). 18.2 m at 7.13%Cs2O including 3.0 m at 23.63%Cs2O (CV25-1023). 5.5 m at 14.83% Cs2O including 2.2 m at 26.48% Cs2O (CV25-1006) Includes highest-grade sample reported to date at 29.79% Cs2O 11.5 m at 1.75% Cs2O including 2.9 m at 3.88% Cs2O (CV25-1025). 16.1 m at 1.43% Cs2O including 1.3 m at 11.08% Cs2O (CV25-1010). Interpreted footprint and width of caesium mineralization at Vega expanded. High-grade caesium intercept from in-fill drilling at the Rigel Zone: 6.2 m at 5.12%Cs2O including 2.1 m at 13.68%Cs2O (CV25-914). High-grade caesium confirmed at the newly-discovered Helios Zone: 1.0 m at 21.52% Cs2O (CV25-975). Caesium assay results reported in this announcement for 8,596 m (52 holes) drilled at the CV13 Pegmatite - including the Vega, Rigel, and Helios Zones. Caesium assay results for 1,176 m (7 holes) from the Vega and Helios Zones remain pending. Darren L. Smith, Executive Vice President Exploration, comments: "Shaakichiuwaanaan continues to deliver impressive results, with the 2025 drill campaign returning the highest caesium grades reported to date at the Property - including a peak assay of 29.8% Cs2O - and confirming high-grade caesium at the newly discovered Helios Zone. With multiple intercepts exceeding 25% Cs2O, dominant pollucite mineralogy, and scale already demonstrated through defined Mineral Resources, the opportunity for the Company to further enhance shareholder value through this caesium deposit is meaningful." "We look forward to reporting caesium results for the remaining holes outstanding and integrating this opportunity into the overall Project development scenario," added Mr. Smith. PMET Resources Inc. (the "Company" or "PMET") (TSX: PMET) (ASX: PMT) (OTCQX: PMETF) (FSE: R9GA) is pleased to report caesium assay results for diamond drill holes completed at the CV13 Pegmatite, as part of its extensive 2025 drill campaign at the Company's wholly-owned Shaakichiuwaanaan Property (the "Property" or "Project"), located in the Eeyou Istchee James Bay region of Quebec. In addition to being one of the largest lithium-tantalum pegmatite Mineral Resources1 and lithium pegmatite Mineral Reserves2 globally, the Property also hosts the world's largest in-situ pollucite-hosted caesium pegmatite Mineral Resource, with 0.69 Mt at 4.40% Cs2O (Indicated) and 1.70 Mt at 2.40% Cs2O (Inferred). The CV13 Pegmatite, host to the caesium Mineral Resource, is located ~3 km along trend from the CV5 Pegmatite, which is situated approximately 13 km south of the regional Trans-Taiga Road and powerline infrastructure corridor, and is accessible year-round by road. _____________________________ (1) The Consolidated MRE (CV5 + CV13 pegmatites), which includes the Rigel and Vega caesium zones, totals 108.0 Mt at 1.40% Li2O, 0.11% Cs2O, 166 ppm Ta2O5, and 66 ppm Ga, Indicated, and 33.4 Mt at 1.33% Li2O, 0.21% Cs2O, 155 ppm Ta2O5, and 65 ppm Ga, Inferred, and is reported at a cut-off grade of 0.40% Li2O (open-pit), 0.60% Li2O (underground CV5), and 0.70% Li2O (underground CV13). A grade constraint of 0.50% Cs2O was used to model the Rigel and Vega caesium zones. Effective Date is June 20, 2025 (through CV24-787). Mineral Resources are not Mineral Reserves as they do not have demonstrated economic viability. Mineral Resources are inclusive of Mineral Reserves. (2) Probable Mineral Reserve of 84.3 Mt at 1.26% Li2O at the CV5 Pegmatite with a cut-off grade is 0.40% Li2O (open-pit) and 0.70% Li2O (underground). Underground development and open-pit marginal tonnage containing material above 0.37% Li2O are also included in the statement. The Effective Date is September 11, 2025. See Feasibility Study news release dated October 20, 2025. As part of its expansive 2025 drill campaign at Shaakichiuwaanaan, the Company completed further delineation drilling at the Vega and Rigel caesium zones. This exploration campaign also resulted in the discovery of the Helios Caesium Zone. All three caesium zones - Vega, Rigel, and Helios - are situated within the CV13 Pegmatite and are largely coincident with lithium and tantalum mineralization. Core assay results for caesium for 8,596 m (52 holes) at the CV13 Pegmatite are reported in this announcement, including prior pending overlimit3 analysis (see Figure 1, Table 1, Table 2, Table 3). Core assay results for caesium for 1,176 m (7 holes), covering the Vega and Helios zones, remain to be reported. Results for lithium and tantalum for all drill holes completed in 2025 at Shaakichiuwaanaan were previously reported (see news releases dated December 14, 2025 and January 21, 2026). All reported widths are core length (i.e., apparent and not true width). Vega Caesium Zone The strongest caesium results to date from the Property were returned from the 2025 drill campaign at the Vega Zone, including ten (10) individual samples grading >20% Cs2O and four (4) grading >25% Cs2O to a peak of29.79%, as well as multi-metre intercepts including 3.0 m at 23.63% Cs2O, 3.0 m at 23.05 Cs2O, and 2.2 m at 26.48% Cs2O (see Table 1, Figure 3, and Figure 4). Most of the holes were completed as infill, targeting a central high-grade core that had been interpreted from previous drilling. However, several holes were also completed at the margins of the modelled zone (e.g., CV25-1006). Based on the assay results reported in this announcement, the interpreted footprint and width of the caesium mineralization at Vega have increased. At Vega, drill result highlights for caesium include: 28.0 m at 8.05%Cs2O including 18.3 m at 11.84%Cs2O (CV25-948), see Figure 2. 18.2 m at 7.13%Cs2O including 3.0 m at 23.63%Cs2O (CV25-1023), see Figure 3. 5.5 m at 14.83% Cs2O including 2.2 m at 26.48% Cs2O (CV25-1006), see Figure 4. Includes highest-grade sample reported to date at the Project - 29.79% Cs2O 11.5 m at 1.75% Cs2O including 2.9 m at 3.88% Cs2O (CV25-1025). 16.1 m at 1.43% Cs2O including 1.3 m at 11.08% Cs2O (CV25-1010). 8.8 m at 0.96% Cs2O and 2.9 m at 10.89% Cs2O (CV25-1006). 9.8 m at 0.93% Cs2O and 1.2 m at 1.33% Cs2O (CV25-1024). 2.7 m at 6.47% Cs2O (CV25-1012) ________________________________ (3) Assay results which exceed the upper detection limit (1.06% Cs2O) of the base analytical package require subsequent analysis using a different analytical package to determine the Cs grade (i.e., overlimit analysis). Caesium results remain to be reported from Vega for multiple holes with overlimit4 analysis pending over intervals of 0.5 to 2.3 m. ______________________________ 4 Assay results which exceed the upper detection limit (1.06% Cs2O) of the base analytical package require subsequent analysis using a different analytical package to determine the Cs grade (i.e., overlimit analysis). Helios Caesium Zone (A NEW 2025 DISCOVERY) High-grade caesium mineralization has been confirmed at the Helios discovery (Table 1, Figure 5). Mineralization has been traced over an area of ~180 m x 80 m at ~1 to 3 m thickness and comes within at least 25 m from surface (vertical depth). Mineralization remains open in several areas. At Helios, drill result highlights to date for caesium include: 1.0 m at 21.52% Cs2O (CV25-975), see Figure 5. 0.8 m at 2.22% Cs2O (CV25-986). 1.0 m at 1.19% Cs2O (CV25-1004). Caesium results remain to be reported from Helios for multiple holes with overlimit5 analysis pending over intervals of 0.5 m to 4.9 m. Rigel Caesium Zone Several holes were completed as infill at the Rigel Zone with results presented in Table 1. The best caesium result from the program was 6.2 m at 5.12%Cs2O including 2.1 m at 13.68%Cs2O in drill hole CV25-914. The assay results from the 2025 drill holes have altered the interpreted eastern footprint of the Rigel Zone, which will be updated as part of the next Mineral Resource Estimate iteration. Some of the highest caesium grades to date have been reported from the Rigel Zone, including 1.1 m at 26.61% Cs2O within a wider zone of 3.2 m at 10.24% Cs2O (CV23-204). __________________________________ 5 Assay results which exceed the upper detection limit (1.06% Cs2O) of the base analytical package require subsequent analysis using a different analytical package to determine the Cs grade (i.e., overlimit analysis). Next Steps Caesium assays results for 1,176 m (7 holes) remain to be reported out of the total 57,024 m (245 holes) completed over the 2025 drill campaign at Shaakichiuwaanaan. These remaining results will be reported once received and compiled. The lithium and tantalum assay results have previously been reported for all 245 holes (see news releases dated December 14, 2025 and January 21, 2026). The geology team is currently interpreting and working with the 2025 drill hole data to advance the host rock and pegmatite geological models for the Project. The work is focused on the CV5 and CV13 pegmatites - including the Vega, Rigel, and Helios caesium zones - ahead of updates to their respective block models and subsequent Mineral Resource Estimate. The Company is also advancing towards an updated Feasibility Study for the CV5 Pegmatite scheduled for the second half of 2026. The data will also inform an underground bulk sample of mineralized pegmatite at CV5, which is currently being permitted. Table 1: Core assay summary for caesium zones in drill holes reported herein at the CV13 Pegmatite. Zone Hole ID From To Interval Li2O Cs2O Ta2O5 (m) (m) (m) (%) (%) (ppm) Vega CV25-948 116.5 144.5 28.0 1.47 8.05 225 incl. 116.5 134.8 18.3 1.3 11.84 117 or 120.2 123.1 3.0 0.97 23.05 58 Vega CV25-1006 151.0 153.9 2.9 1.38 10.89 911 162.3 167.8 5.5 1.19 14.83 243 incl. 165.7 167.8 2.2 0.34 26.48 13 or 165.7 166.7 1.0 0.43 29.79 24 179.1 180.8 1.7 0.61 1.38 187 202.2 211.0 8.8 4.57 0.96 166 Vega CV25-1010 130.8 146.9 16.1 2.82 1.43 114 incl. 130.8 132.1 1.3 0.79 11.08 6 incl. 135.9 136.7 0.8 0.80 3.34 87 incl. 143.6 144.8 1.3 5.78 2.69 96 Vega CV25-1012 143.1 145.8 2.7 0.30 6.47 291 Vega CV25-1016 140.5 146.6 6.1 1.35 0.84 146 224.0 225.3 1.3 0.02 4.18 477 Vega CV25-1017A 153.6 155.3 1.8 5.61 1.85 308 159.3 159.9 0.6 3.55 2.50 42 Vega CV25-1021 142.2 142.7 0.5 3.10 1.05 249 Vega CV25-1023 138.1 156.2 18.2 2.31 7.13 206 incl. 138.1 149.2 11.2 1.60 11.09 76 or 138.1 141.1 3.0 0.59 23.63 18 Vega CV25-1024 89.8 91.0 1.2 0.76 1.33 160 108.5 118.3 9.8 3.49 0.93 214 Vega CV25-1025 136.4 147.9 11.5 1.57 1.75 279 incl. 136.4 139.3 2.9 0.39 3.88 161 incl. 142.6 144.1 1.5 1.44 4.24 644 incl. 147.0 147.9 0.8 3.01 1.32 97 Rigel CV25-913 92.8 97.1 4.3 2.62 0.51 1,618 Rigel CV25-914 73.0 79.2 6.2 1.34 5.12 533 incl. 73.0 75.0 2.1 0.39 13.68 799 Helios CV25-975 36.5 37.5 1.0 1.82 21.52 0 Helios CV25-986 68.3 69.1 0.8 3.90 2.22 227 Helios CV25-1004 53.9 55.0 1.0 3.04 1.19 106 (1) All intervals are core length (i.e., apparent and not true width) and presented for all pegmatite intervals >1% Cs2O. A 0.5% Cs2O cut-off is used to constrain the pegmatite interval. Table 2: Core assay summary for lithium, caesium, and tantalum in pegmatite intervals >2 m at the CV13 Pegmatite. Hole ID From To Interval Li2O Cs2O Ta2O5 Comments (m) (m) (m) (%) (%) (ppm) CV25-913 87.3 102.3 15.0 1.15 0.21 1,105 incl. 92.8 100.7 7.9 2.15 0.38 1,974 104.5 106.5 2.0 0.21 0.00 510 CV25-914 73.0 82.6 9.7 1.34 3.36 752 CV25-917 81.9 85.2 3.4 0.07 0.01 364 88.9 96.1 7.2 0.08 0.05 131 CV25-919 74.4 85.9 11.5 2.87 0.10 413 incl. 76.5 83.4 6.9 4.40 0.11 544 CV25-967 100.0 104.4 4.4 0.14 0.00 348 CV25-969 No >2 m pegmatite intersections CV25-971 No >2 m pegmatite intersections CV25-973 25.0 37.1 12.2 0.38 0.19 90 CV25-975 35.7 38.5 2.8 0.89 7.52 198 CV25-977 29.0 35.4 6.4 2.61 0.11 251 incl. 31.3 35.4 4.1 3.94 0.09 308 CV25-980 50.5 53.1 2.6 2.54 0.07 70 CV25-986 55.3 73.8 18.4 1.19 0.17 132 incl. 64.9 71.8 6.9 2.49 0.35 191 83.1 85.3 2.2 0.17 0.06 289 CV25-989 83.1 88.3 5.2 0.17 0.06 522 CV25-992 44.3 56.8 12.4 1.65 0.05 109 CV25-995 No >2 m pegmatite intersections CV25-996 No >2 m pegmatite intersections CV25-998 No >2 m pegmatite intersections CV25-1000 No >2 m pegmatite intersections CV25-1001 No >2 m pegmatite intersections CV25-1004 51.1 60.2 9.1 0.87 0.16 106 CV25-1005 94.1 97.0 2.9 0.16 0.01 445 CV25-1008 46.8 55.9 9.1 1.44 0.05 100 incl. 50.6 55.4 4.8 2.69 0.05 162 CV25-1009 85.6 87.9 2.2 0.31 0.01 397 CV25-1010 128.7 150.8 22.1 2.31 1.07 127 incl. 138.9 147.9 9.0 4.18 0.58 129 CV25-1011 244.7 246.9 2.2 0.39 0.01 108 CV25-1012 141.2 175.5 34.3 1.12 0.64 361 incl. 164.4 175.5 11.0 1.97 0.18 396 CV25-1015 96.2 100.0 3.8 0.08 0.01 2,276 103.5 106.4 2.9 0.14 0.01 338 CV25-1016 119.4 169.1 49.7(3) 2.08 0.18 129 incl. 135.0 135.7 0.7 7.71 0.09 10 incl. 154.5 158.6 4.0 5.16 0.11 83 CV25-1017 No >2 m pegmatite intersections Hole lost CV25-1017A 146.0 170.7 24.7 4.00 0.30 126 incl. 150.3 157.3 7.0 6.04 0.64 178 incl. 162.4 162.9 0.6 7.02 0.05 12 CV25-1019 No >2 m pegmatite intersections CV25-1021 122.8 148.3 25.6 1.45 0.11 118 incl. 129.9 148.3 18.4 1.97 0.09 129 151.4 158.6 7.2(3) 1.52 0.06 132 CV25-1022 No >2 m pegmatite intersections CV25-1023 133.4 164.6 31.2 2.07 4.21 144 incl. 147.6 155.5 7.9 3.86 1.51 374 incl. 159.6 160.7 1.1 7.32 0.27 2 or 159.6 162.3 2.7 5.87 0.20 22 CV25-1024 87.6 102.6 15.0 0.15 0.14 442 106.2 126.8 20.6 3.31 0.51 173 incl. 116.1 124.8 8.8 5.02 0.32 107 CV25-1025 134.9 162.2 27.3 1.57 0.78 679 incl. 144.6 147.9 3.3 4.08 0.55 304 incl. 157.0 162.2 5.2 3.03 0.06 368 CV25-921 No >2 m pegmatite intersections Geomechanical hole CV25-924 111.7 119.6 7.9 0.26 0.04 32 Geomechanical hole CV25-927 16.9 44.8 27.9 1.87 0.08 298 Geomechanical hole incl. 22.9 34.8 11.9 2.94 0.12 217 46.7 54.2 7.5 0.41 0.03 198 129.6 133.8 4.2 0.02 0.01 101 CV25-930 126.1 128.0 2.0 0.01 0.04 23 Geomechanical hole CV25-933 146.5 172.6 26.1(3) 0.56 0.02 59 Geomechanical hole incl. 149.5 156.7 7.2 1.91 0.03 57 177.2 179.8 2.6 0.06 0.01 36 206.5 210.5 3.9 0.03 0.01 120 CV25-948 113.8 153.9 40.1 1.97 5.64 232 Geomechanical hole incl. 143.9 153.2 9.3 3.66 0.14 272 CV25-953 No >2 m pegmatite intersections Geomechanical hole CV25-957 162.6 167.9 5.3 1.06 0.02 53 Geomechanical hole CV25-962 75.5 92.4 16.9 0.88 0.05 48 Geomechanical hole CV25-964 195.0 202.7 7.7 0.62 0.04 47 Geomechanical hole CV25-976 No >2 m pegmatite intersections Geomechanical hole CV25-982 No >2 m pegmatite intersections Geomechanical hole CV25-988 104.4 109.0 4.6 0.23 0.02 108 Geomechanical hole 119.9 136.9 16.9 0.08 0.01 120 CV25-994 130.8 139.4 8.6 0.11 0.01 81 Geomechanical hole CV25-1003 116.2 122.8 6.6 0.27 0.05 152 Geomechanical hole CV25-1006 136.7 138.9 2.2 0.12 0.07 158 Geomechanical hole 151.0 153.9 2.9 1.38 10.89 911 160.0 215.0 55.0 2.58 1.80 267 incl. 183.9 213.9 29.9 4.11 0.44 340 (1) All intervals are core length (i.e., apparent and not true width) and presented for all pegmatite intervals >2 m; (2) Collared in pegmatite; (3) Includes minor intervals of non-pegmatite units (typically <3 m). Table 3: Attributes for drill holes reported herein at the Shaakichiuwaanaan Property. Hole ID Substrate Total Azimuth Dip Easting Northing Elevation Core Area Depth (°) (°) (m) Size (m) CV25-913 Land 119.1 230 -47 565067.4 5927998.6 429.0 HQ CV13 CV25-914 Land 110.0 205 -60 565068.5 5927998.2 429.0 HQ CV13 CV25-917 Land 110.0 140 -45 565070.0 5927997.7 428.9 HQ CV13 CV25-919 Land 100.9 90 -48 565070.6 5928000.5 429.2 HQ CV13 CV25-921 Land 119.0 300 -65 564969.3 5927995.9 425.5 HQ3 CV13 CV25-924 Land 143.0 88 -20 564781.0 5927945.9 411.0 HQ3 CV13 CV25-927 Land 205.9 200 -60 564741.3 5927833.1 394.7 HQ3 CV13 CV25-930 Land 164.1 145 -50 565514.7 5928132.2 412.6 HQ3 CV13 CV25-933 Land 254.0 140 -65 565379.2 5928220.5 432.3 HQ3 CV13 CV25-948 Land 220.9 0 -70 565294.0 5928610.3 390.2 HQ3 CV13 CV25-953 Land 155.0 345 -70 564235.6 5928355.1 414.4 HQ3 CV13 CV25-957 Land 187.7 200 -65 564176.9 5928325.9 414.4 HQ3 CV13 CV25-962 Land 164.0 200 -55 564218.5 5928149.5 403.2 HQ3 CV13 CV25-964 Land 256.8 50 -70 564552.5 5928183.5 415.7 HQ3 CV13 CV25-967 Land 140.0 220 -70 564859.3 5928147.3 427.5 NQ CV13 CV25-969 Land 125.9 180 -45 564859.6 5928146.5 427.5 NQ CV13 CV25-971 Land 146.1 240 -45 564858.5 5928147.1 427.5 NQ CV13 CV25-973 Land 86.1 200 -65 564744.8 5928140.9 421.1 NQ CV13 CV25-975 Land 58.9 200 -45 564822.9 5928104.3 423.8 NQ CV13 CV25-976 Land 146.2 230 -60 564991.6 5928524.0 407.0 HQ3 CV13 CV25-977 Land 79.8 20 -45 564747.0 5928143.9 421.5 NQ CV13 CV25-980 Land 121.9 0 -75 564777.9 5928210.7 425.8 NQ CV13 CV25-982 Land 151.8 325 -65 565075.2 5928839.7 396.8 HQ3 CV13 CV25-986 Land 109.3 20 -55 564821.9 5928196.6 427.0 NQ CV13 CV25-988 Land 198.2 330 -70 565706.4 5928728.9 384.9 HQ3 CV13 CV25-989 Land 161.0 280 -50 564777.3 5928209.8 425.9 NQ CV13 CV25-992 Land 79.8 180 -85 564923.3 5927904.0 409.0 NQ CV13 CV25-994 Land 173.0 145 -52 565816.3 5928738.5 384.3 HQ3 CV13 CV25-995 Land 176.0 200 -85 564935.9 5927984.4 421.5 NQ CV13 CV25-996 Land 160.9 158 -45 566373.5 5928633.7 365.1 NQ CV13 CV25-998 Land 191.0 275 -45 564858.4 5928019.3 417.6 NQ CV13 CV25-1000 Land 316.6 158 -45 566411.5 5928545.2 359.0 NQ CV13 CV25-1001 Land 160.3 20 -70 564724.3 5928234.5 424.3 NQ CV13 CV25-1003 Land 193.8 180 -52 565230.0 5928538.9 395.6 HQ3 CV13 CV25-1004 Land 188.0 200 -55 564881.3 5928226.8 431.2 NQ CV13 CV25-1005 Land 124.9 200 -45 564855.5 5928311.2 427.4 NQ CV13 CV25-1006 Land 227.6 165 -52 565131.6 5928724.8 395.5 HQ3 CV13 CV25-1008 Land 185.0 200 -80 564881.6 5928227.2 431.1 NQ CV13 CV25-1009 Land 151.9 200 -68 564855.7 5928311.7 427.4 NQ CV13 CV25-1010 Land 211.7 150 -60 565464.9 5928557.7 387.9 HQ CV13 CV25-1011 Land 299.3 200 -90 564855.4 5928312.1 427.3 NQ CV13 CV25-1012 Land 230.0 135 -60 565131.6 5928725.0 395.4 HQ CV13 CV25-1015 Land 149.0 200 -45 564918.4 5928324.9 426.7 NQ CV13 CV25-1016 Land 235.9 103 -60 565465.2 5928558.0 387.9 HQ CV13 CV25-1017 Land 26.0 180 -70 565292.0 5928611.5 390.1 HQ CV13 CV25-1017A Land 223.7 180 -70 565291.7 5928611.4 390.2 HQ CV13 CV25-1019 Land 166.8 200 -70 564918.5 5928325.3 426.7 NQ CV13 CV25-1021 Land 206.0 65 -60 565465.0 5928558.4 387.9 HQ CV13 CV25-1022 Land 133.9 200 -45 564812.1 5928337.3 423.6 NQ CV13 CV25-1023 Land 191.0 85 -60 565293.2 5928611.7 390.0 HQ CV13 CV25-1024 Land 149.1 180 -57 565600.4 5928536.8 385.4 HQ CV13 CV25-1025 Land 208.8 215 -62 565280.4 5928733.5 388.4 HQ CV13 (1) Coordinate system NAD83 / UTM zone 18N; (2) All drill holes are diamond drill; (3) Azimuths and dips presented are those 'planned' and may vary off collar/downhole. Quality Assurance / Quality Control (QAQC) A Quality Assurance / Quality Control protocol following industry best practices was incorporated into the program and included systematic insertion of quartz blanks and certified/standard reference materials into sample batches at a rate of approximately 5% each. Additionally, analysis of pulp-split sample duplicates was completed to assess analytical precision, and external (secondary) laboratory pulp-split duplicates were prepared at the primary lab for subsequent check analysis and validation. All core samples collected were shipped to SGS Canada's laboratory in Val-d'Or, QC, for sample preparation (code PRP90 special) which includes drying at 105°C, crush to 90% passing 2 mm, riffle split 250 g, and pulverize 85% passing 75 microns. The pulps were shipped by air to SGS Canada's laboratory in Burnaby, BC, where the samples were homogenized and subsequently analyzed for multi-element (including Li, Ta, and Cs) using sodium peroxide fusion with ICP-AES/MS finish (codes GE_ICP91A50 and GE_IMS91A50). Overlimits for Cs were completed at SGS Canada's laboratory in Lakefield, ON, by borate-fusion XRF (code GC_XRF76V). Qualified/Competent Person The technical and scientific information in this news release that relates to the Mineral Resource Estimate and exploration results for the Company's properties is based on, and fairly represents, information compiled by Mr. Darren L. Smith, M.Sc., P.Geo., who is a Qualified Person as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101"), and member in good standing with the Ordre des Géologues du Québec (Geologist Permit number 01968), and with the Association of Professional Engineers and Geoscientists of Alberta (member number 87868). Mr. Smith has reviewed and approved the related technical information in this news release. Mr. Smith is an Executive and Vice President of Exploration for PMET Resources Inc. and holds common shares, Restricted Share Units (RSUs), Performance Share Units (PSUs), and options in the Company. The information in this news release that relates to the Mineral Reserve Estimate and Feasibility Study is based on, and fairly represents, information compiled by Mr. Frédéric Mercier-Langevin, Ing. M.Sc., who is a Qualified Person as defined by NI 43-101, and member in good standing with the Ordre des Ingénieurs du Québec. Mr. Mercier-Langevin has reviewed and approved the related technical information in this news release. Mr. Mercier-Langevin is the Chief Operating and Development Officer for PMET Resources Inc. and holds common shares, RSUs, PSUs, and options in the Company. About PMET Resources Inc. PMET Resources Inc. is a pegmatite critical mineral exploration and development company focused on advancing its district-scale 100%-owned Shaakichiuwaanaan Property located in the Eeyou Istchee James Bay region of Quebec, Canada, which is accessible year-round by all-season road and proximal to regional hydro-power infrastructure. In late 2025, the Company announced a positive lithium-only Feasibility Study on the CV5 Pegmatite for the Shaakichiuwaanaan Property and declared a maiden Mineral Reserve of 84.3 Mt at 1.26% Li2O (Probable)6. The study outlines the potential for a competitive and globally significant high-grade lithium project targeting up to ~800 ktpa spodumene concentrate using a simple Dense Media Separation ("DMS") only process flowsheet. Further, the results highlight Shaakichiuwaanaan as a potential North American critical mineral powerhouse with significant opportunity for tantalum and caesium in addition to lithium. The Project hosts a Consolidated Mineral Resource7 totalling 108.0 Mt at 1.40% Li2O and 166 ppm Ta2O5 (Indicated) and 33.4 Mt at 1.33% Li2O and 155 ppm Ta2O5 (Inferred), and ranks as the largest8 lithium pegmatite resource in the Americas, and in the top ten globally. Additionally, the Project hosts the world's largest pollucite-hosted caesium pegmatite Mineral Resource at the Rigel and Vega zones with 0.69 Mt at 4.40% Cs2O (Indicated), and 1.70 Mt at 2.40% Cs2O (Inferred). For further information, please contact us at [email protected] or by calling +1 (604) 279-8709, or visit www.pmet.ca. Please also refer to the Company's continuous disclosure filings, available under its profile at www.sedarplus.ca and www.asx.com.au, for available exploration data. This news release has been approved by "KEN BRINSDEN" Kenneth Brinsden, President, CEO, & Managing Director Olivier Caza-Lapointe Head, Investor Relations T: +1 (514) 913-5264 E: [email protected] ___________________________ 6 See Feasibility Study news release dated October 20, 2025. Probable Mineral Reserve cut-off grade is 0.40% Li2O (open-pit) and 0.70% Li2O (underground). Underground development and open-pit marginal tonnage containing material above 0.37% Li2O are also included in the statement. Effective Date of September 11, 2025. 7 The Consolidated MRE (CV5 + CV13 pegmatites), which includes the Rigel and Vega caesium zones, totals 108.0 Mt at 1.40% Li2O, 0.11% Cs2O, 166 ppm Ta2O5, and 66 ppm Ga, Indicated, and 33.4 Mt at 1.33% Li2O, 0.21% Cs2O, 155 ppm Ta2O5, and 65 ppm Ga, Inferred, and is reported at a cut-off grade of 0.40% Li2O (open- pit), 0.60% Li2O (underground CV5), and 0.70% Li2O (underground CV13). A grade constraint of 0.50% Cs2O was used to model the Rigel and Vega caesium zones. The Effective Date is June 20, 2025 (through drill hole CV24-787). Mineral Resources are not Mineral Reserves as they do not have demonstrated economic viability. Mineral Resources are inclusive of Mineral Reserves. 8 Determination based on Mineral Resource data, sourced through July 11, 2025, from corporate disclosure. Disclaimer for Forward-Looking Information This news release contains "forward-looking statements" and "forward-looking information" within the meaning of applicable securities laws. All statements, other than statements of present or historical facts, are forward-looking statements. Forward-looking statements involve known and unknown risks, uncertainties and assumptions and accordingly, actual results could differ materially from those expressed or implied in such statements. You are hence cautioned not to place undue reliance on forward-looking statements. Forward-looking statements are typically identified by words such as "plan", "development", "growth", "continued", "intentions", "expectations", "emerging", "evolving", "strategy", "opportunities", "anticipated", "trends", "potential", "outlook", "ability", "additional", "on track", "prospects", "viability", "estimated", "reaches", "enhancing", "strengthen", "target", "believes", "next steps" or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved. Forward-looking statements include, but are not limited to, statements concerning the interpretation of the results from exploration, the exploration and development potential of various zones, including CV4, CV5, CV12, and CV13, the remaining results from the 2025 drill campaign and future exploration work, including the anticipated results therefrom, the advancement of the host rock and pegmatite geological models for the Project, the bulk sample of mineralized pegmatite at CV5, which is currently being permitted, and the preparation and release of an updated Feasibility Study in the second half of 2026. Forward-looking statements are based upon certain assumptions and other important factors that, if untrue, could cause actual results to be materially different from future results expressed or implied by such statements. There can be no assurance that forward-looking statements will prove to be accurate. Key assumptions upon which the Company's forward-looking information is based include, without limitation, the ability to make discoveries beyond Vega and to identify a new high-grade zone, the ability to expand the footprint and width of caesium mineralization at Vega, that proposed exploration work on the Property and the results therefrom will continue as expected, the accuracy of reserve and resource estimates, the classification of resources and the assumptions on which the reserve and resource estimates are based, long-term demand for lithium (spodumene), tantalum (tantalite), and caesium (pollucite) supply, and that exploration and development results continue to support management's current plans for Property development. Forward-looking statements are also subject to risks and uncertainties facing the Company's business, any of which could have a material adverse effect on the Company's business, financial condition, results of operations and growth prospects. Readers should review the detailed risk discussion in the Company's most recent Annual Information Form filed on SEDAR+, for a fuller understanding of the risks and uncertainties that affect the Company's business and operations. Although the Company believes its expectations are based upon reasonable assumptions and has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking information will prove to be accurate. If any of the risks or uncertainties mentioned above, which are not exhaustive, materialize, actual results may vary materially from those anticipated in the forward-looking statements. The forward-looking statements contained herein are made only as of the date hereof. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except to the extent required by applicable law. The Company qualifies all of its forward-looking statements by these cautionary statements. Competent Person Statement (ASX Listing Rules) The information in this news release that relates to the Feasibility Study ("FS") for the Shaakichiuwaanaan Project, which was first reported by the Company in a market announcement titled "PMET Resources Delivers Positive CV5 Lithium-Only Feasibility Study for its Large-Scale Shaakichiuwaanaan Project" dated October 20, 2025 (Montreal time) is available on the Company's website at www.pmet.ca, on SEDAR+ at www.sedarplus.ca and on the ASX website at www.asx.com.au. The production target from the Feasibility Study referred to in this news release was reported by the Company in accordance with ASX Listing Rule 5.16 on the date of the original announcement. The Company confirms that, as of the date of this news release, all material assumptions and technical parameters underpinning the production target in the original announcement continue to apply and have not materially changed. The Mineral Resource and Mineral Reserve Estimates in this release were first reported by the Company in accordance with ASX Listing Rule 5.8 in market announcements titled "World's Largest Pollucite-Hosted Caesium Pegmatite Deposit" dated July 20, 2025 (Montreal time) and "PMET Resources Delivers Positive CV5 Lithium-Only Feasibility Study for its Large-Scale Shaakichiuwaanaan Project" dated October 20, 2025 (Montreal time) and are available on the Company's website at www.pmet.ca, on SEDAR+ at www.sedarplus.ca and on the ASX website at www.asx.com.au. The Company confirms that, as of the date of this news release, it is not aware of any new information or data verified by the competent person that materially affects the information included in the relevant announcement and that all material assumptions and technical parameters underpinning the estimates in the relevant announcement continue to apply and have not materially changed. The Company confirms that, as at the date of this announcement, the form and context in which the competent person's findings are presented have not been materially modified from the original market announcement. Appendix 1 - JORC Code 2012 Table 1 (ASX Listing Rule 5.8.2) Section 1 - Sampling Techniques and Data Criteria JORC Code explanation Commentary Sampling • Nature and quality of sampling (eg cut channels, techniques random chips, or specific specialized industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. • Core sampling protocols meet industry standard practices. • Include reference to measures taken to ensure • Core sampling is guided by lithology as determined during sample representivity and the appropriate geological logging (i.e., by a geologist). All pegmatite calibration of any measurement tools or systems intervals are sampled in their entirety (half-core), regardless used. if spodumene mineralization is noted or not (in order to ensure an unbiased sampling approach) in addition to ~1 to 3 m of sampling into the adjacent host rock (dependent on pegmatite interval length) to "bookend" the sampled pegmatite. • Aspects of the determination of mineralization • The minimum individual sample length is typically 0.5 m and the that are Material to the Public Report. maximum sample length is typically 2.0 m. Targeted individual pegmatite sample lengths are 1.0 to 1.5 m. • In cases where 'industry standard' work has been • All drill core is oriented to maximum foliation prior to logging done this would be relatively simple (eg 'reverse and sampling and is cut with a core saw into half-core pieces, circulation drilling was used to obtain 1 m samples with one half-core collected for assay, and the other half-core from which 3 kg was pulverized to produce a 30 g remaining in the box for reference. charge for fire assay'). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralization types (eg submarine nodules) may warrant disclosure of detailed information. • Core samples collected from drill holes were shipped to SGS Canada's laboratory in Val-d'Or, QC, for sample preparation (code PRP90 special) which included drying at 105°C, crush to 90% passing 2 mm, riffle split 250 g, and pulverize 85% passing 75 microns. • All drill core sample pulps were shipped by air to SGS Canada's laboratory in Burnaby, BC, where the samples were homogenized and subsequently analysed for multi-element (including Li, Ta, and Cs) using sodium peroxide fusion with ICP-AES/MS finish (codes GE_ICP91A50 and GE_IMS91A50). Overlimits for Cs were completed at SGS Canada's laboratory in Lakefield, ON, by borate-fusion XRF (code GC_XRF76V). Drilling • Drill type (eg core, reverse circulation, open- • NQ, HQ, or HQ3 size core diamond drilling was completed for all techniques hole hammer, rotary air blast, auger, Bangka, holes. Core was not oriented. sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, face- sampling bit or other type, whether core is oriented and if so, by what method, etc). Drill sample • Method of recording and assessing core and chip • All drill core was geotechnically logged following industry recovery sample recoveries and results assessed. standard practices, and include TCR, RQD, ISRM, and Q-Method (since mid-winter 2023). Core recovery typically exceeds 90%. • Measures taken to maximize sample recovery and ensure representative nature of the samples. • Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/ coarse material. Logging • Whether core and chip samples have been • Upon receipt at the core shack, all drill core is pieced geologically and geotechnically logged to a level together, oriented to maximum foliation, metre marked, of detail to support appropriate Mineral Resource geotechnically logged (including structure), alteration logged, estimation, mining studies and metallurgical geologically logged, and sample logged on an individual sample studies. basis. Core box photos are also collected of all core drilled, regardless of perceived mineralization. Specific gravity measurements of pegmatite are also collected at systematic intervals for all pegmatite drill core using the water immersion method, as well as select host rock drill core. • Whether logging is qualitative or quantitative in • The logging is qualitative by nature, and includes estimates of nature. Core (or costean, channel, etc) spodumene grain size, inclusions, and model mineral estimates. photography. • The total length and percentage of the relevant • These logging practices meet or exceed current industry standard intersections logged. practices. Sub-sampling • If core, whether cut or sawn and whether quarter, • Drill core sampling followed industry best practices. Drill core techniques and half or all core taken. was saw-cut with half-core sent for geochemical analysis and sample half-core remaining in the box for reference. The same side of preparation the core was sampled to maintain representativeness. • If non-core, whether riffled, tube sampled, • The minimum individual sample length is typically 0.5 m and the rotary split, etc and whether sampled wet or dry. maximum sample length is typically 2.0 m. Targeted individual pegmatite sample lengths are 1.0 to 1.5 m. • For all sample types, the nature, quality and • Sample sizes are considered appropriate for the material being appropriateness of the sample preparation assayed. technique. • Quality control procedures adopted for all sub- • A Quality Assurance / Quality Control protocol following sampling stages to maximize representivity of industry best practices was incorporated into the program and samples. included systematic insertion of quartz blanks and certified/ standard reference materials into sample batches at a rate of approximately 5% each. Additionally, analysis of pulp-split sample duplicates was completed to assess analytical precision, and external (secondary) laboratory pulp-split duplicates were prepared at the primary lab for subsequent check analysis and validation. • Measures taken to ensure that the sampling is • All protocols employed are considered appropriate for the sample representative of the in situ material collected, type and nature of mineralization and are considered the optimal including for instance results for field duplicate/ approach for maintaining representativeness in sampling. second-half sampling. • Whether sample sizes are appropriate to the grain size of the material being sampled. Quality of assay • The nature, quality and appropriateness of the • Core samples collected from drill holes were shipped to SGS data and assaying and laboratory procedures used and whether Canada's laboratory in Val-d'Or, QC, for sample preparation laboratory tests the technique is considered partial or total. (code PRP90 special) which included drying at 105°C, crush to 90% passing 2 mm, riffle split 250 g, and pulverize 85% passing 75 microns. • For geophysical tools, spectrometers, handheld XRF • All drill core sample pulps were shipped by air to SGS Canada's instruments, etc, the parameters used in laboratory in Burnaby, BC, where the samples were homogenized and determining the analysis including instrument make subsequently analysed for multi-element (including Li, Ta, and and model, reading times, calibrations factors Cs) using sodium peroxide fusion with ICP-AES/MS finish (codes applied and their derivation, etc. GE_ICP91A50 and GE_IMS91A50). Overlimits for Cs were completed at SGS Canada's laboratory in Lakefield, ON, by borate-fusion XRF (code GC_XRF76V). • Nature of quality control procedures adopted (eg • The Company relies on both its internal QAQC protocols standards, blanks, duplicates, external laboratory (systematic use of blanks, certified/standard reference checks) and whether acceptable levels of accuracy materials, and external checks), as well as the laboratory's (ie lack of bias) and precision have been internal QAQC. established. • All protocols employed are considered appropriate for the sample type and nature of mineralization and are considered the optimal approach for maintaining representativeness in sampling. Verification of • The verification of significant intersections by • Intervals are reviewed and compiled by the EVP Exploration and sampling and either independent or alternative company Project Managers prior to disclosure, including a review of the assaying personnel. Company's internal QAQC sample analytical data. • The use of twinned holes. • No twinned holes were completed, although a few were recollared immediately adjacent if initially lost. • Documentation of primary data, data entry • Data capture utilizes MX Deposit software whereby core logging procedures, data verification, data storage data is entered directly into the software for storage, including (physical and electronic) protocols. direct import of laboratory analytical certificates as they are received. The Company employs various on-site and post QAQC protocols to ensure data integrity and accuracy. • Discuss any adjustment to assay data. • Adjustments to data include reporting lithium and tantalum in their oxide forms, as it is reported in elemental form in the assay certificates. Formulas used are Li2O = Li x 2.153, Ta2O5 = Ta x 1.221, and Cs2O = Cs x 1.0602 Location of data • Accuracy and quality of surveys used to locate • Each drill hole collar has been surveyed with a RTK Trimble points drill holes (collar and down-hole surveys), Zephyr 3, except for a minor number of holes (e.g., holes lost trenches, mine workings and other locations used in which were re-collared). Mineral Resource estimation. • Specification of the grid system used. • The coordinate system used is UTM NAD83 Zone 18. • Quality and adequacy of topographic control. • The Company completed a property-wide LiDAR and orthophoto survey in August 2022, which provides high-quality topographic control. • The quality and accuracy of the topographic controls are considered adequate for advanced stage exploration and development, including Mineral Resource estimation. Data spacing and • Data spacing for reporting of Exploration Results. • At CV5, drill hole collar spacing is dominantly grid based. distribution Several collars are typically completed from the same pad at varied orientations targeting pegmatite pierce points of ~50 (Indicated, Li-Ta) to 100 m (Inferred, Li-Ta) spacing. • Whether the data spacing and distribution is • At CV13, drill hole spacing is a combination of grid based (at sufficient to establish the degree of geological ~100 m spacing) and fan based with multiple holes collared from and grade continuity appropriate for the Mineral the same pad. Therefore, collar locations and hole orientations Resource and Ore Reserve estimation procedure(s) may vary widely, which reflect the varied orientation of the and classifications applied. pegmatite body along strike. Pegmatite pierce points of ~50 (Indicated, Li-Ta) to 100 m (Inferred, Li-Ta) spacing are targeted. • Whether sample compositing has been applied. • At CV12 and CV8, drill hole collar spacing is dominantly grid based. Several collars are typically completed from the same pad at varied orientations targeting pegmatite pierce points of ~50 m to 100 m spacing. • At CV4, drill hole spacing is fan based with multiple holes collared from the same pad. • Based on the nature of the mineralization and continuity in geological modelling, the drill hole spacing is anticipated to be sufficient to support a MRE. • Core sample lengths typically range from 0.5 to 2.0 m and average ~1.0 to 1.5 m. Sampling is continuous within all pegmatite encountered in the drill hole. • Core samples are not composited upon collection or for analysis. Orientation of • Whether the orientation of sampling achieves • No sampling bias is anticipated based on structure within the data in relation unbiased sampling of possible structures and the mineralized body. to geological extent to which this is known, considering the structure deposit type. • If the relationship between the drilling • The principal mineralized bodies are relatively undeformed and orientation and the orientation of key mineralized very competent, although have meaningful structural control. structures is considered to have introduced a sampling bias, this should be assessed and reported if material. • At CV5, the principal mineralized body and adjacent lenses are steeply dipping resulting in oblique angles of intersection with true widths varying based on drill hole angle and orientation of pegmatite at that particular intersection point. i.e., the dip of the mineralized pegmatite body has variations in a vertical sense and along strike, so the true widths are not always apparent until several holes have been drilled (at the appropriate spacing) in any particular drill-fence. • At CV13, the principal pegmatite body has a varied strike and shallow northerly dip. The Rigel and Vega zones are hosted entirely within the CV13 Pegmatite as lenses concordant to the local pegmatite orientation. • At CV12 and CV8, current interpretation supports a series of shallow, northerly dipping sheets. • At CV4, current interpretation supports a series of steeply, northerly dipping sheets. Sample security • The measures taken to ensure sample security. • Samples were collected by Company staff or its consultants following specific protocols governing sample collection and handling. Core samples were bagged, placed in large supersacs for added security, palleted, and shipped directly to Val-d'Or, QC, being tracked during shipment along with Chain of Custody. Upon arrival at the laboratory, the samples were cross-referenced with the shipping manifest to confirm all samples were accounted for. At the laboratory, sample bags are evaluated for tampering. Audits or reviews • The results of any audits or reviews of sampling • A review of the sample procedures for the Company's drill techniques and data. programs has been reviewed by several Qualified/Competent Persons through multiple NI 43-101 technical reports completed for the Company and deemed adequate and acceptable to industry best practices. The most recent Technical Report includes a review of sampling techniques and data through 2024 (drill hole CV24-787) in a technical report titled "CV5 Pegmatite Lithium- Only Feasibility Study NI 43-101 Technical Report, Shaakichiuwaanaan Project" with an Effective Date of October 20, 2025, and Issue Date of November 14, 2025. • Additionally, the Company continually reviews and evaluates its procedures in order to optimize and ensure compliance at all levels of sample data collection and handling. Section 2 - Reporting of Exploration Results Criteria JORC Code explanation Commentary Mineral tenement and • Type, reference name/number, location • The Shaakichiuwaanaan Property (formerly called "Corvette") is land tenure status and ownership including agreements or comprised of 463 CDC claims located in the James Bay Region of Quebec, material issues with third parties such as with Lithium Innova Inc. (wholly owned subsidiary of PMET Resources joint ventures, partnerships, overriding Inc.) being the registered title holder for all of the claims. The royalties, native title interests, northern border of the Property's primary claim block is located within historical sites, wilderness or national approximately 6 km to the south of the Trans-Taiga Road and powerline park and environmental settings. infrastructure corridor. The CV5 Spodumene Pegmatite is accessible year- round by all-season road is situated approximately 13.5 km south of the regional and all?weather Trans-Taiga Road and powerline infrastructure. The CV13 and CV9 spodumene pegmatites are located approximately 3 km west-southwest and 14 km west of CV5, respectively. • The security of the tenure held at the • The Company holds 100% interest in the Property subject to various time of reporting along with any known royalty obligations depending on original acquisition agreements. DG impediments to obtaining a licence to Resources Management holds a 2% NSR (no buyback) on 76 claims, D.B.A. operate in the area. Canadian Mining House holds a 2% NSR on 50 claims (half buyback for $2M), OR Royalties holds a sliding scale NSR of 1.5-3.5% on precious metals, and 2% on all other products, over 111 claims, and Azimut Exploration holds 2% NSR on 39 claims. • The Property does not overlap any atypically sensitive environmental areas or parks, or historical sites to the knowledge of the Company. There are no known hinderances to operating at the Property, apart from the goose harvesting season (typically mid-April to mid-May) where the communities request helicopter flying not be completed, and potentially wildfires depending on the season, scale, and location. • Claim expiry dates range from July 2026 to July 2028. Exploration done by • Acknowledgment and appraisal of • No previous exploration targeting LCT pegmatites has been conducted by other parties exploration by other parties. other parties at the Project. • For a summary of previous exploration undertaken by other parties at the Project, please refer to the most recent NI 43-101 Technical Report. Geology • Deposit type, geological setting and • The Property overlies a large portion of the Lac Guyer Greenstone Belt, style of mineralization. considered part of the larger La Grande River Greenstone Belt and is dominated by volcanic rocks metamorphosed to amphibolite facies. The claim block is dominantly host to rocks of the Guyer Group (amphibolite, iron formation, intermediate to mafic volcanics, peridotite, pyroxenite, komatiite, as well as felsic volcanics). The amphibolite rocks that trend east-west (generally steeply south dipping) through this region are bordered to the north by the Magin Formation (conglomerate and wacke) and to the south by an assemblage of tonalite, granodiorite, and diorite, in addition to metasediments of the Marbot Group (conglomerate, wacke). Several regional-scale Proterozoic gabbroic dykes also cut through portions of the Property (Lac Spirt Dykes, Senneterre Dykes). • The geological setting is prospective for multiple commodities over several different deposit styles including orogenic gold (Au), volcanogenic massive sulphide (Cu, Au, Ag), komatiite-ultramafic (Au, Ag, PGE, Ni, Cu, Co), and LCT pegmatite (Li, Cs, Ta, Ga, Rb). • Exploration of the Property has outlined three primary mineral exploration trends crossing dominantly east-west over large portions of the Property - Golden Trend (gold), Maven Trend (copper, gold, silver), and CV Trend (lithium, caesium, tantalum). The CV4, CV5, CV8, CV12, and CV13 pegmatites are situated within the CV Trend. • The pegmatites at Shaakichiuwaanaan are categorized as Li-Cs-Ta ("LCT") pegmatites. LCT mineralization at the Property is observed to occur within quartz-feldspar pegmatite. The pegmatite is often very coarse-grained and off-white in appearance, with darker sections commonly composed of mica and smoky quartz, and occasional tourmaline. • Core assays and ongoing mineralogical studies, coupled with field mineral identification and assays confirm spodumene as the dominant lithium-bearing mineral on the Property, with no significant petalite, lepidolite, lithium-phosphate minerals, or apatite present. The spodumene crystal size of the pegmatites is typically decimeter scale, and therefore, very large. The pegmatites also carry significant tantalum (tantalite) and caesium (pollucite). Gallium is present in spodumene and feldspar via substitution with Al. Drill hole Information • A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes: • Drill hole attribute information is included in a table herein. o easting and northing of the drill hole collar • Results for pegmatite intervals <2 m are not typically reported. o elevation or RL (Reduced Level - elevation above sea level in metres) of the drill hole collar o dip and azimuth of the hole o down hole length and interception depth o hole length. • If the exclusion of this information is justified on the basis that the information is not Material and this exclusion does not detract from the understanding of the report, the Competent Person should clearly explain why this is the case. Data aggregation • In reporting Exploration Results, methods weighting averaging techniques, maximum and/or minimum grade truncations (eg cutting of high grades) and cut-off grades are usually Material and should be stated. • Length weighted averages were used to calculate grade over width. • Where aggregate intercepts incorporate • No specific grade cap or cut-off was used during grade width short lengths of high grade results and calculations for lithium or tantalum. The lithium, tantalum, and caesium longer lengths of low grade results, the length weighted average grade of the entire pegmatite interval is procedure used for such aggregation should calculated for all pegmatite intervals over 2 m core length, as well as be stated and some typical examples of higher grade zones at the discretion of the geologist. Additionally, for such aggregations should be shown in caesium specific zones, a general cut-off of 0.5% Cs2O was used to detail. calculate pegmatite intervals assaying >1% Cs2O, which are reported when applicable. • The assumptions used for any reporting of • Pegmatites have inconsistent mineralization by nature, resulting in metal equivalent values should be clearly some intervals having a small number of poorly mineralized samples stated. included in the calculation. Non-pegmatite internal dilution is limited to typically <3 m where relevant and intervals indicated when assays are reported. • No metal equivalents have been reported. Relationship between • These relationships are particularly • At CV5, current interpretation supports a principal, large pegmatite mineralization widths important in the reporting of Exploration body of near vertical to steeply dipping orientation, flanked by several and intercept lengths Results. subordinate pegmatite lenses. • If the geometry of the mineralization • At CV13, current interpretation supports a series of sub-parallel with respect to the drill hole angle is trending sills with a flat-lying to shallow northerly dip. Within the known, its nature should be reported. CV13 Pegmatite body are the Rigel and Vega zones, which follow the local trend of the wider pegmatite body. • If it is not known and only the down • At CV12 and CV8, current interpretation supports a series of shallow, hole lengths are reported, there should be northerly dipping sheets. a clear statement to this effect (eg 'down hole length, true width not known'). • At CV4, current interpretation supports a series of steeply, northerly dipping sheets. • All reported widths are core length. Diagrams • Appropriate maps and sections (with • Please refer to the figures included herein as well as those posted on scales) and tabulations of intercepts the Company's website. should be included for any significant discovery being reported. These should include, but not be limited to a plan view of drill hole collar locations and appropriate sectional views. Balanced reporting • Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results. • Reporting is balanced. • Please refer to the table(s) included herein. • Results for pegmatite intervals <2 m are not typically reported. However, all intervals where Cs exceeds 1% Cs2O are reported. Other substantive • Other exploration data, if meaningful and • The Company is currently completing site environmental work over the exploration data material, should be reported including CV5 and CV13 pegmatite area. No endangered flora or fauna have been (but not limited to): geological documented over the Property to date, and several sites have been observations; geophysical survey results; identified as potentially suitable for mine infrastructure. geochemical survey results; bulk samples - size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances. • The Company has completed a bathymetric survey over the shallow glacial lake which overlies a portion of the CV5 Spodumene Pegmatite. The lake depth ranges from <2 m to approximately 18 m, although the majority of the CV5 Spodumene Pegmatite, as delineated to date, is overlain by typically <2 to 10 m of water. • The Company has completed significant metallurgical testing comprised of HLS and magnetic testing, which has produced 6+% Li2O spodumene concentrates at >70% recovery on both CV5 and CV13 pegmatite material. A DMS test on CV5 Pegmatite material returned a Subsequent and more expansive DMS pilot programs completed, including with non-pegmatite dilution, produced results in line with prior testwork, confirming a DMS-only flowsheet is applicable. The Company has also produced a marketable lithium hydroxide concentrate from CV5's spodumene concentrate. • The Company has produced marketable tantalite concentrates at bench- scale from the CV5 Pegmatite's DMS (spodumene) tailings fractions. The testwork used gravity or gravity + flotation methods to produce tantalite concentrates grading 8.7% Ta2O5 at 45% global recovery (MC001) and 6.6% Ta2O5 at 49% global recovery (MC002). • The Company has produced marketable pollucite concentrates at bench- scale from the CV13 Pegmatite's Vega Caesium Zone. The testwork used XRT ore sorting to produce concentrates of 11.5% Cs2O and 20.0% Cs2O at an overall 88% recovery. • Various mandates required for advancing the Project have been completed or are ongoing, including but not limited to, environmental baseline, metallurgy, geomechanics, hydrogeology, hydrology, stakeholder engagement, geochemical characterization, as well as transportation and logistical studies. A Feasibility Study for lithium-only on the CV5 Pegmatite was announced October 20, 2025. Further work • The nature and scale of planned further • The Company intends to continue drilling the pegmatites of the work (eg tests for lateral extensions or Shaakichiuwaanaan Property, primarily targetting lithium, caesium, and depth extensions or large-scale step-out tantalum as the primary commodities of interest. This is anticipated to drilling). includes step-out and infill drilling. • Diagrams clearly highlighting the areas • Further drilling is anticipated to support the development of the CV5 of possible extensions, including the main and CV13 pegmatites (i.e., resource, geotechnical, geomechanical, and geological interpretations and future hydrogeological). drilling areas, provided this information is not commercially sensitive. • Metallurgical test programs evaluating the recovery of lithium, caesium, and tantalum are ongoing. • Surface prospecting, rock sampling, and mapping is planned to continue across the Property focused on LCT pegmatite. View original content to download multimedia:https://www.prnewswire.com/news-releases/widest-and-highest-grade-caesium-intercepts-to-date-at-vega-including-28-0-m-at-8-05-cs2o-and-2-2-m-at-26-48-cs2o-302678189.html SOURCE PMET Resources Inc.