GreenLight Metals Intersects 22.24 meters of 3.02 g/t Gold and 2.03% Copper (5.27% Copper Equivalent) at the Bend VMS Deposit in Wisconsin High-Grade Intercept in hole B25-004 includes Visible Gold at 290m; Results Confirm Strengthening Mineralization Down-

High-Grade Intercept in hole B25-004 includes Visible Gold at 290m; Results Confirm Strengthening Mineralization Down- Plunge

Medford, Wisconsin--(Newsfile Corp. - October 21, 2025) - GreenLight Metals Inc. (TSXV: GRL) ("GreenLight" or the "Company") is pleased to announce additional high-grade Copper and Gold results from its Phase 1 drilling program at the Bend Project in Wisconsin, further to its September 22, 2025 news release reporting results from holes B25-001 through B25-003. The six-hole diamond drilling program, totaling 2,037 meters, was completed from three sites along two sections entirely on the Company's leased forty-acre tract of private minerals.

Highlights

Phase 1 Program Complete: Six-hole drilling program successfully completed on schedule, targeting eastern extensions of the known Bend deposit. Drilling confirms mineralization extends eastward along a ~36-42° plunge and remains open at depth and along trend.

B25-004: Increase in both grade and thickness of mineralization ~45 meters down dip of previously released hole B25-003 (12.85m of 3.74% CuEq)

34.25 meters (drilled thickness) averaging 2.22 g/t Au, 1.35% Cu, 15.62 g/t Ag and 193.22 g/t Tellurium (Te) (3.74% CuEq, not including Te) from 275.25m Including 22.24 meters averaging 3.02 g/t Au, 2.03% Cu, 23.53 g/t Ag and 283.08 g/t Te within massive to semi-massive sulfide (5.27% CuEq) from 276.29m Localized high grade gold intersection within the main sulfide body over 6.10 meters averaging 7.41 g/t Au from 287.9 meters. Visible gold was identified at 290m

B25-005: Extension of copper and gold mineralization eastward 57m down plunge of B25-003, 47m along strike of B25-004 19.32 meters (drilled thickness) averaging 2.03 g/t Au, 0.78% Cu, 10.12 g/t Ag, 153.73 g/t Te (2.95% CuEq) from 285.83m Including 8.79 meters averaging 1.93 g/t Au, 1.64% Cu, 20.31 g/t Ag, 273.48 g/t Te (3.74% CuEq) within massive to semi-massive sulfide zone from 285.83m Including 4.00 meters averaging 4.19 g/t Au, 0.1% Cu, 2.03 g/t Ag, 100.70 g/t Te (4.52% CuEq) within footwall crystal tuff from 300m

B25-006 (assays pending):

Visual results include 17.11m of semi-massive to massive sulfide from 328.52m and 5.42m of heavily mineralized footwall crystal tuff from 345.63m

Strategic Advantage: Program executed entirely on private mineral lands with existing permits, demonstrating GreenLight's ability to advance exploration efficiently while federal permit applications remain pending

Matt Filgate, President & CEO, commented: "The results from Holes 4 and 5 demonstrate increasing grade and thickness as mineralization continues down-dip and strengthens within the deposit core. We are highly encouraged by the presence of high-grade copper and gold-including visible gold at 290 meters-which underscores the project's growth potential. The results of the Phase 1 drill program have confirmed substantial continuity of high-grade mineralization and established clear vectors for our upcoming 5,000-6,000 meter winter drill campaign."

Table 1: Summary of Significant Intercepts - Holes B25-004 and B25-005

The composite grades of select intervals are calculated on a length-weighted basis and are reported as drilled thicknesses. True thicknesses of the intervals are estimated to be 75-85% of the drilled thickness.

CuEq is reported to express the aggregate in-situ value of copper, gold and silver as a percentage copper grade. CuEq incorporates assumed metallurgical recoveries and is not a proxy for, nor evidence of, economic value. Tellurium (Te) is reported separately and is not included in CuEq.

CuEq (%) = ((Cu grade (%) / 100 * 0.9 (recovery) * 2204.6 * $4.50) + (Au grade (g/t) * 0.9 (recovery) / 31.1035 * $3,600) + (Ag grade (g/t) * 0.9 (recovery) / 31.1035 * $40)) / (2204.6 * 0.01 * $4.50).

Assumptions: metal prices of $4.50/lb Cu, $3,600/oz Au, $40/oz Ag; recoveries of 90% for Cu, Au and Ag based on the Company’s preliminary assessment of analogous VMS deposits. No allowances have been made for smelting/refining charges, penalties or deleterious elements, or payability factors. No metallurgical test work has been completed at Bend; actual recoveries and payabilities are unknown and may differ materially.

Tellurium (Te) overlimit analyses for samples >500 g/t Te are currently pending for 7 samples in B25-004 and B25-005. The grade for these intercepts were calculated using 500 g/t Te for these samples.

Figure 1: 2025 Drill Program Plan Map

Hole Details

Details for holes B25-001 through B25-003 were provided in the Company's September 22, 2025 news release.

B25-004: Collared on the same site as B25-003 and designed to test down-plunge continuity ~45m below B25-003 vertically, the mineralized horizon was intersected at 276.29m yielding 22.24m of semi-massive to massive pyrite-chalcopyrite sulfide. The 34.25-meter total mineralized interval represents a significant increase in both grade and thickness compared to B25-003 (12.85m), confirming that mineralization strengthens down-plunge. A localized high-grade gold zone averaging 7.41 g/t Au over 6.10 meters was intersected within the massive sulfide body, with visible gold identified at 290 meters. B25-004 also intersected 13.57m of pyrite in the footwall quartz- eye crystal tuff from 298.53m to 312.10m.

B25-005: Collared as a 47m step back south on the same section as B25-001/002 to test downplunge extent at 60m vertical depth below B25-002, the mineralized horizon was intersected at 285.83m with 8.79m of semi-massive to massive pyrite-chalcopyrite. This hole supported the hypothesis of a 36° to 42° plunge to the east. B25-005 also intersected 16.6m of strong pyrite mineralized footwall chloritized quartz-eye crystal tuff known for hosting gold mineralization from 294.62m to 311.22m.

B25-006: Collared from the same site as B25-005 to test 60m down dip vertically, the mineralized horizon was intersected at 328.52m coring 17.11m of semi-massive to massive sulfides. Similar to overlying holes, a 5.42m thick pyritic-rich footwall zone within the quartz-eye crystal tuff was intersected from 345.63m to 351.05m.

Next Steps

Pending assays: Results for the final Phase 1 hole, B25-006, are expected in the coming weeks and will be released once received and validated.

Phase 2: Planning is currently underway for an expanded, winter drill program to follow up on the recent drilling success at the Bend project. Permitting efforts on both the federal properties (Prospecting Permit) as well as within the privately owned Soo Line Mineral Parcel are in progress to initiate a 5,000 - 6,000 meter drill program to further expand the deposit.

GreenLight Engages Bunt Capital for Investor Relations Services

The Company also announces it has entered into a six-month agreement with Bunt Capital Corporation ("Bunt Capital"), based in Toronto, Ontario, to provide investor relations services to the Company. Bunt is a full-service marketing and consulting services company focused on the junior metals and mining sector. Bunt will communicate directly with existing shareholders, analysts and prospective investors. Under the agreement, Bunt Capital will provide investor relations and capital-markets advisory services, including institutional and family-office outreach and coordination of non-deal roadshows.

The Company will pay Bunt Capital C$15,000 per month plus applicable taxes, invoiced monthly in arrears, from working capital, for a total of C$90,000 plus taxes over the six month term. Bunt may from time to time acquire or dispose of securities of the Company through the market, privately or otherwise, as circumstances or market conditions warrant. Bunt has also agreed to the Company's insider trading policy and will observe the Company's trading blackouts. Bunt and its affiliates are at arm's length to the Company and has no other relationship with the Company, except pursuant to the engagement agreement. The engagement is subject to acceptance of the TSX Venture Exchange.

Table 2: Drill Collar Information

*Coordinates in NAD83 UTM Zone 15N

Figure 2: Long Section with DDH pierce points on plane of mineralization

Figure 3: Cross Section A-A'

Figure 4: Cross Section B-B'

B25-004: 276.1m - 286.90m

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B25-004: 286.90m – 298.20m

B25-005: 284.00m – 294.74m

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B25-004: 291.20m

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B25-005: 286.10m

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