Grid Metals Corp. (TSX-V:GRDM) (OTCQB:MSMGF) is pleased to report the final drill results from its Phase 1 cesium-focused drill program at the 100% owned Falcon West cesium property. Drilling at the Lucy South cesium target has outlined a highly fractionated lithium/cesium/tantalum enriched pegmatite with the cesium largely contained in pollucite and lithium largely contained in coarse grained spodumene.

In addition, Grid would like to cordially invite its shareholders and other stakeholders to visit us at Booth #2122 in the Investors Exchange Exhibition Room at the Prospectors and Developers Association of Canada (PDAC) Convention. PDAC, regarded as one of the world’s premier resources conferences, will run from Sunday, March 1, 2026 until Wednesday, March 4, 2026 at the Metro Toronto Convention Centre in Toronto, Ontario. Robin Dunbar, President & CEO, will be presenting during the Electric Materials Session on Tuesday, March 3 at 12:17 pm ET in Room 801B.

Drilling Highlights

• The best cesium intercept drilled at the Property to date was returned in hole LU25-51 of 3.35 m grading 20.45% Cs₂O including 2.35 m with 28.4% Cs₂O. Other highlights from the current batch of reported holes are shown in Table 1.
• Cesium is concentrated in pollucite-bearing subzones within a Cs- + Li-enriched core zone of the Lucy South LCT pegmatite. The core zone has been extensively drilled across an area of ~120m x 40-50m in which the average vertical depth to the top of the zone ranges from 15-25 metres.
• The Lucy South core zone remains open in multiple directions. There are indications that the overall extent of the host LCT pegmatite could be larger than the immediate detailed drilling area based on magnetic survey data, historical drill hole information and bedrock and vegetation geochemical survey results.
• The pollucite mineralization shows variable lateral connectivity but is most continuous in a flat-lying part of the up-dip, near-surface portion of the Lucy South pegmatite.
• The Company is currently attempting to expand the known cesium mineralization in the immediate target area with a Phase 2 drill program that commenced in late January 2026. It expects to commence work on an initial cesium resource estimate for Lucy South immediately following receipt of all assays from the Phase 2 program.

A total of 28 holes are reported in this release such that all 67 holes (3,035 metres) have now been reported from the Phase 1 cesium-focused drill program at Lucy South. Significant results include both cesium-rich and lithium-rich intersections hosted by the highly fractionated core zone of the host Lucy South pegmatite. All of the reported drillholes in the program have intercepted Lucy South at no greater than 50m vertical depth. The majority of cesium intercepts have occurred at a down hole depth of less than 30 meters.

In late January, the Company commenced a Phase 2 program at Lucy South that will include approximately an additional 60 drill holes focused on remaining gaps around the currently defined Cs-rich portion of the pegmatite.

Figure 1: Map of Lucy South target area with interpreted pierce points into the top of the flat-lying Lucy South LCT pegmatite projected to surface for holes LU25-40 to LU25-67 and previous holes completed in this area. Background image is based on a recent government LIDAR survey.

Table 1: Selected Length-Weighted Cesium Interval Assays from Drill Holes LU25-40 to LU25-67, Lucy South Phase 1 Drilling Program. See Appendix 1 for complete results and Appendix 2 for hole locations. Note the true thickness for each interval reported is estimated to represent between 80% and 100% of the reported interval lengths.

Cesium Results

Drill hole logging, quantitative mineralogical analyses and whole-rock geochemical data confirm that pollucite is the dominant cesium-bearing mineral in the Cs-rich portion of the Lucy South LCT pegmatite. Pollucite is present in abundances ranging from <1% to >80% over true thicknesses of <0.1 metres to ~4 metres. It is typically concentrated in one to three discrete intervals within a several metre-thick, quartz-, pollucite- and spodumene-rich core zone in the Lucy South pegmatite. The Company has submitted a number of samples with low, medium and high cesium grades for additional, quantitative mineralogical analysis to better characterize the distribution of pollucite in the pegmatite. Pollucite has historically been the mineral of choice for cesium extraction given its high cesium content, which is typically ~32% Cs₂O.

Lithium Results

A majority of the drillholes completed during the program intersected one or more <1 metre- to several metre-thick sections containing coarse grained spodumene that typically have average Li₂O grades in the range 1 – 3% and locally reaching 6% (Appendix 1). The spodumene-rich intervals are commonly intercalated with pollucite-rich sections in the core zone of the Lucy South pegmatite. The observed mineralogical zonation is indicative of a highly-fractionated LCT pegmatite system.

Lucy South Overview

• The Lucy South pegmatite is a highly fractionated, rare-metal enriched LCT pegmatite. These types of pegmatites, featuring percentage level grades of both cesium (associated with pollucite) and lithium (associated with spodumene) are extremely rare, globally. Global cesium production historically has occurred from only three LCT pegmatite bodies.
• The minimum strike length of the Cs-rich portion of the Lucy South pegmatite is 120 metres and the average width ranges from several metres to ~50 metres. The Cs-rich area remains open in multiple directions.
• The pollucite mineralization is interpreted to have formed during the last stages of crystallization of the host Lucy South pegmatite, post-dating the spodumene-rich mineralization and forming discrete pockets of Cs-rich pegmatite within the core zone.
• A Phase 2 drill program targeting the most obvious remaining gaps in the immediate vicinity of the currently drill-defined Cs-rich portion of the Lucy South pegmatite commenced in late January and is expected to include ~3,000 metres of drilling. The program will also include some larger step-out holes to help better understand the mineralogy, geometry and size potential of the Lucy LCT pegmatites.
• The Lucy South LCT pegmatite has an uncertain relationship to the Lucy North LCT pegmatite (Figure 2). Both pegmatites host spodumene and pollucite mineralization associated with a Li-Cs-enriched core zone averaging 5 metres in true thickness and encompassed by finer-grained wall zones. Both pegmatites have an easterly strike and dip gently to moderately to the southeast. Current drilling data suggest both may be part of the same highly-fractionated LCT pegmatite system, either as discrete sub-parallel sheets or as a structurally disrupted single pegmatite intrusion. On a similar note, an outcropping area of similar LCT pegmatite occurs ~1 km to the west of the Lucy pegmatite at the Artdon occurrence. There is no drilling between the two areas, which are connected by a strong magnetic low anomaly that underlies both the Lucy South and Lucy North pegmatites.
• The scarcity of near-term supply makes defining a resource in a stable western jurisdiction like Canada a unique opportunity. Grid expects to complete enough drilling by the end of the Phase 2 program to support an initial cesium resource estimate that it hopes to announce near the start of the third quarter of this year.

Figure 2: Map of Current Drill-Defined Extent of the Lucy LCT Pegmatite(s). Wireframes based on both the average Cs₂O grade and on LCT pegmatite intersections are shown in red and pink, respectively. The LCT pegmatite has the potential to extend along strike to both the east and west, downdip to the southeast, and downplunge to the south.

Figure 3: Drill hole LU25-51 showing core zone of pegmatite (in white) surrounded by host rock. Core grades of 3.35 m with 20.45% Cs₂O (from 22.0 m) including 2.35 m with 28.4% Cs₂O.

About Cesium and the Cesium Market

Cesium is defined as a critical metal by both Canada and the U.S. It has growing uses in high technology and important industrial applications. There is currently believed to be a significant shortage of cesium feedstock globally.

About Grid Metals Corp.

Grid Metals provides a focused cesium opportunity at its 100%-owned Falcon West cesium project with upside optionality at its other mineral projects in southeastern Manitoba:

1. The Falcon West Property (Li-Cs) is located 110 km east of Winnipeg along the Trans-Canada highway and contains highly anomalous cesium and lithium values in LCT pegmatite including the Lucy South pegmatite dyke, the focus of Grid’s current exploration efforts.
2. The Makwa Property (Ni-Cu-PGM-Co), which is subject to an Option and Joint Venture Agreement with Teck Resources Limited. Teck can earn up to a 70% interest in Makwa by incurring a total of CAD$17.3 million, comprising project expenditures (CAD$15.7 million) and cash payments or equity participation (CAD$1.6 million) with Grid. Makwa is located on the south arm of the Bird River Greenstone Belt.
3. The Mayville Property (Cu-Ni) is located on the north arm of the Bird River Greenstone Belt. The property is owned subject to a minority interest. The project contains a NI 43-101 compliant open pit resource of 32 million tonnes grading 0.61% CuEq.
4. The Donner Property (Li-Cs) is adjacent to the Mayville Property, and Grid owns 75% of the project. The project contains a NI 43-101 compliant resource of 6.8 million tonnes grading 1.39% Li₂O.

All of the Company’s southeastern Manitoba projects are located on the ancestral lands of the Sagkeeng First Nation with whom the Company maintains an Exploration Agreement.

On Behalf of the Board of Grid Metals Corp.

For more information about the Company, please visit our website at www.gridmetalscorp.com or contact:

Robin Dunbar – President, CEO & Director – rd@gridmetalscorp.com
Brandon Smith – Chief Development Officer – bsmith@gridmetalscorp.com
David Black – Investor Relations – info@gridmetalscorp.com

Appendix 1: Drilling results for holes LU25-40 to LU25-67, Lucy South Phase 1 drill program. Collar coordinates are based on the NAD 83 datum and the UTM Zone 15N projection.

Appendix 2: Drill hole specifications. Collar coordinates are based on the NAD 83 datum and the UTM Zone 15N projection.