(via TheNewswire)

Vancouver, B.C. – TheNewswire - December 9, 2025: IDEX Metals Corp. ( “IDEX” or the “Company” ) (TSXV: IDEX; OTCQB: IDXMF) is pleased to announce that it has completed its maiden drill campaign at the Freeze Property in Idaho, USA ( “Freeze” or the “Property” ). The program concluded with a total of 2,282 meters of drilling across 6 drillholes at the Kismet Breccia Target. The drilling was successful in delineating and expanding a large copper-bearing magmatic-hydrothermal system in and around the Kismet Breccia Complex ( “Kismet” ).

Highlights

• Six drillholes completed totaling 2,282 m at the Kismet Breccia Complex  

• Copper mineralization was encountered in all 6 drillholes on the Property  

• The footprint of the Kismet Breccia Complex in the subsurface has laterally reached 765 m North-South, 135 m East-West and vertically extends beyond 500 m, and is open in all directions  

• Final hole KSMT25006 discovered the Property’s first intrusive-hosted (non-breccia) mineralization south of Hornet Creek, intersecting a pyrite-rich (to 20%) quartz–sericite–pyrite altered zone with pyrite-molybdenum ± chalcopyrite veins - interpreted as the outer pyrite shell of a deeper magmatic-hydrothermal system  

• The company is awaiting assay results for the 4 remaining drillholes at Freeze, with results expected in early January  

Clayton Fisher, CEO of IDEX, commented: “This was IDEX Metals’ first drill program at the Freeze Property, and it has corroborated what we’ve believed from the start: Kismet sits within a large, robust magmatic–hydrothermal system. Every hole hit copper-bearing breccias or intrusive-hosted mineralization, building a cohesive picture of scale and continuity. Most importantly, our team’s interpretation establishes that KSMT25006 pushed through a pyrite shell and ended in sulfide mineralization; this is our strongest evidence yet – reinforced by geophysical data – that a porphyry center lies south of Hornet Creek between Kismet and the North Breccia. These results not only exceeded our technical objectives, they have unlocked an entirely new level of opportunity for IDEX. We believe Freeze has the makings of a major copper discovery, and we’re moving into the next phase of exploration with confidence and momentum.”

Figure 1. Plan map of all d rillholes completed in the 2026 drill season, including the delineated scale of the Kismet Breccia Complex
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Technical Discussion

The 2025 drilling program was the first IDEX-led campaign completed at the Freeze Property, and the first in 60 years at the Kismet Breccia Target. The primary goals of the program were to a) confirm and expand the footprint of historical mineralization that had been recorded at Kismet, and b) explore for mineralization, alteration and geophysical characteristics that may indicate the potential for a deeper porphyry-style copper deposit. The Company believes that it has fundamentally achieved both of these goals, and further exploration is warranted on the Freeze Property.

To date, results have exceeded the levels of historical mineralization encountered in the 1965 drillholes (40 m at 0.83% Cu; see June 10 th , 2025 news release), with IDEX drilling returning 101 m of 1.02% Cu, from surface (see October 7 th ,2025 news release) at Kismet. To date, the Kismet Breccia Complex has laterally reached 765 m North-South and 150 m East-West in the subsurface (Figure 2) and is currently open in all directions. The deepest hole of the program was KSMT25004, which was drilled to a depth of 518 m and established that the breccia is open to the south of current drilling (for further details see the drillhole summary in this release).

Hole KSMT25006, the final hole of the 2025 drill program, also proved to be highly significant from a geological perspective. KSMT25006 intersected the first intrusive-hosted, non-breccia-dominant mineralization on the Property. This zone – encountered just south of Hornet Creek – is interpreted to represent a pyrite shell of a deeper magmatic hydrothermal system. The drillhole encountered abundant disseminated pyrite (up to 20%) with vein-hosted pyrite-molybdenum +/- chalcopyrite mineralization associated with weak-to-moderate quartz-sericite-pyrite alteration. Future drill programs will aim to follow up on this zone, to better understand its connection to the Kismet Breccia system and the North Breccia (see November 6 th news release ).

Please see a detailed description of all drillholes below.

Figure 2. N-S Section showing all drillholes completed in the 2025 drilling campaign with resistivity isosurfaces

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Hole Summaries

Table 1. Summary of Drillhole Locations

KSMT25001

• Intersected a tourmaline-bearing breccia transitioning into tourmaline-bearing monzonite with weak–moderate potassic alteration.  

• Assays for drillhole KSMT25001 returned grades of 182 m at 0.32% Cu, and 278 m at 0.29% Cu from surface (see September 7 th , 2025 news release)  

• KSMT25001 confirmed a vertically extensive, multi-phase breccia-hosted copper system with continuous mineralization at Kismet.  

KSMT25002

• Drilled into a mineralized tourmaline-bearing magmatic breccia with a distinctive potassic-altered monzonite matrix and mineralized granodiorite clasts.  

• Assays for drillhole KSMT25002 returned grades of 101 m at 1.02% Cu, within 160.11 m at 0.76% Cu from surface (see October 7 th ,2025 news release).  

• Hole KSMT25002 confirmed high-grade potential of oxide bearing mineralization at the Kismet, and helped establish possible orientation of the breccia complex.  

KSMT25003

• KSMT25003 was collared approximately 75 m north of holes KSMT25001 and KSMT25002 and was drilled at an azimuth of 340 towards the northwest. The goals of the drillhole were to extend known mineralization at the Kismet Breccia Complex to the north and attempt to gain a better understanding of the geometry of mineralization at Kismet.  

• Contains porphyritic granodiorite and tonalite clasts with moderate–intense phyllic alteration and D-type veinlets confined to clasts.  

• Hole KSMT25003 extended the Kismet Breccia complex to the north of historical and known drilling, displaying the potential of the Kismet Breccia to be a large and continuously mineralized breccia system.  

KSMT25004

• Drillhole KSMT25004 was collared approximately 75 metres north of KSMT25003 and drilled at an azimuth of 160 degrees to the southeast. The objectives of the hole were to test the extent of the breccia complex in this direction and to determine whether the weakly-to-moderately-mineralized tonalite encountered in KSMT25001 continued to the southeast.         

• Copper oxides dominate near surface; sulfide assemblages (chalcopyrite–pyrite) become more prevalent with depth, with secondary oxides still present beyond 400 m. Mineralization is variable downhole.  

• Hole KSMT25004 established that the Kismet Breccia is not closed out to the south/southeast, as no weakly mineralized tonalite was encountered, thereby opening the potential for additional drilling to the S-SE of the property in the 2026 drilling season.  

KSMT25005

• Tested the eastern margin of the system and intersected the same mineralized clast-supported breccia seen elsewhere, with strong near-surface oxide copper.  

• Copper mineralization becomes more variable downhole but remains persistent within both clasts and matrix.  

• Deeper intervals show repeated tourmaline-rich intrusive pulses and magnetite–tourmaline–pyrite overprinting of earlier tonalite.  

• Hole KSMT25005 established the lateral continuity of the Kismet Breccia and expanded the extent of mineralized breccia to the NE of historical known drilling. This infers that there are additional opportunities to expand the Kismet Breccia to the NE and add potential tonnage through additional drilling and exploration.  

KSMT25006

• The objective of the hole was to test the northern extent of the Kismet Breccia Complex, evaluate its potential connection with the North Breccia Zone and assess the structural and mineralization relationship with Hornet Creek, which is inferred to be a major control on mineralization across the Freeze Property.  

• Hole KSMT25006 encountered the first example of extensive, primary, non-brecciated, porphyry-type alteration and mineralization. The hole is interpreted to have crosscut a pyrite halo that are typically associated with porphyry-type deposits.  

A District-Scale System Emerging

The emergence of larger-scale alteration, mineralization and lithological characteristics is laying the groundwork for additional discovery potential at the Freeze Property. As more data continues to become available, a more fulsome picture should emerge, which will bolster planning efforts for a comprehensive and targeted drilling program on the Property in 2026. Furthermore, the discovery of the North Breccia Zone – the identification of a second mineralized breccia center north of Kismet – underscores the fact that the system extends well beyond the original discovery area. Further to the north, the Frostfall Zone has revealed a compelling gold-bearing trend (highlighted by assays reaching up to 2.91 g/t Au) signaling a new precious-metals component within the greater system.

Figure 3. Metallogenic Zones on the Freeze Property

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Next Steps

• Continued integration of geochemical analysis, surface mapping, geophysical surveys, and drilling data from holes KSMT25001 through KSMT25006, to define a robust model for Freeze  

• Utilizing the new project model to help identify high-priority drill targets for an expanded Phase II drilling program during the 2026 exploration season  

• Steady news flow expected to start 2026:  

  • Assay results from drill holes KSMT25003-25006  

  • Geophysics results from IP, Vector IP & ELF surveys 

  • Completion of a project wide model with defined Porphyry Copper drill targets for the 2026 exploration season - this includes testing where we left off with KSMT25006, which is interpreted to have pushed through the pyrite shell of a porphyry located between the Kismet and North Breccia Targets.  

Qualified Person

The scientific and technical information in this news release has been reviewed and approved for disclosure by David Hladky, P.Geo. (registered in Alberta), V.P. Exploration of IDEX Metals Corp. David Hladky is a "Qualified Person" for IDEX Metals Corp. within the meaning of National Instrument 43-101 - Standards of Disclosure for Mineral Projects .

About IDEX Metals Corp.

IDEX Metals Corp. is a mineral exploration company focused on advancing a portfolio of base and precious metal projects in Idaho, USA. IDEX is primarily focused on the exploration and development of the Freeze Copper-Gold porphyry prospect located in the newly discovered Idaho Copper Belt, Washington County, Idaho. With a strategic land position in a great mining jurisdiction and surrounded by major industry players, IDEX is committed to redefining district-scale exploration in Idaho.

For more information, please visit https://idexmetals.com/ .

ON BEHALF OF THE BOARD OF DIRECTORS

Clayton Fisher, CEO & Director

For further information regarding IDEX contact:

Investor Relations
info@idexmetals.com
1 (604) 260-0356

Cautionary Note Regarding Forward-Looking Statements

Statements contained in this news release that are not historical facts may be forward-looking statements. These forward-looking statements involve risks, uncertainties and other factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements. In addition, the forward-looking statements require management to make assumptions and are subject to inherent risks and uncertainties. There is significant risk that the forward-looking statements will not prove to be accurate, that the management’s assumptions may not be correct and that actual results may differ materially from such forward-looking statements. Accordingly, readers should not place undue reliance on the forward-looking statements. Generally forward-looking statements can be identified by the use of terminology such as “anticipate”, “will”, “expect”, “may”, “continue”, “could”, “estimate”, “forecast”, “plan”, “potential” and similar expressions. These forward-looking statements are based on a number of assumptions which may prove to be incorrect which, without limiting the generality of the following, include: risks inherent in exploration activities; the impact of exploration competition; unexpected geological or hydrological conditions; changes in government regulations and policies, including trade laws and policies; failure to obtain necessary permits and approvals from government authorities; volatility and sensitivity to market prices; volatility and sensitivity to capital market fluctuations; the ability to raise funds through private or public equity financings; environmental and safety risks including increased regulatory burdens; weather and other natural phenomena; and other exploration, development, operating, financial market and regulatory risks. The forward-looking statements contained in this press release are made as of the date hereof or the dates specifically referenced in this press release, where applicable. Except as required by applicable securities laws and regulation, IDEX disclaims any intention or obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by applicable securities laws. All forward-looking statements contained in this press release are expressly qualified by this cautionary statement.

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