Mr. Jeremy Crozier reports

LEVIATHAN METALS PROVIDES UPDATE ON ITS DIAMOND DRILLING PROGRAM AT THE CENTRAL PROJECT, KALAHARI COPPER BELT, BOTSWANA

Leviathan Metals Corp. has provided an update on its diamond drilling program at the company's 100-per-cent-owned Central project, Kalahari copper belt (the KCB), Botswana.

• Fourteen diamond drill holes completed at Central for approximately 3,600 metres of drilling, target KCB stratigraphy present in all but two holes.
• Copper sulphides observed in eight holes. Core cutting, sampling and laboratory analysis are continuing, assay results pending.
• Domal structure confirmed, northestern limb demonstrates marked veining, brecciation and alteration, and is regarded as a key structural target for mineralization.

Fourteen mostly widely spaced diamond drill holes have been completed at Central for approximately 3,600 metres of drilling, with the D'Kar-Ngwako Pan formation (DKF-NPF) contact -- that is, target KCB stratigraphy -- in evidence in all but two of the holes drilled (Table 1).

Drilling has also confirmed the presence of the domal structure at Central previously identified by Leviathan's geological team in ground magnetic and airborne EM (AEM) data sets. This structure has a gently dipping southeastern limb, a more steeply dipping northwestern limb and structural nose. The steeper dip of the northwestern limb, in combination with sedimentary facies variations also recorded by Leviathan's team, appear to be affected by a greater degree of structure, veining, brecciation and alteration -- and as such may host pathways and trap sites for potential mineralizing fluids. Notwithstanding its emergence as a prospective target area, the northwestern limb accounts for only 50 per cent of drilling meterage to date.

Leviathan chief operations officer Jeremy Crozier remarked: "Based mostly on very broad drill hole spacing, our findings provide an excellent basis for targeted follow-on work. Drilling at Central has readily confirmed target KCB stratigraphy in practically every hole drilled, with copper sulphide minerals observed in the majority of cases. We've also confirmed the presence of the Hyena Hills dome, with the deformed northwestern limb showing as a particularly favourable target structure -- put more simply a zone with potential to have hosted more concentrated fluid flow and mineralization.

Leviathan chief executive officer added: "Right rocks, right place. We've hit the DKF-NPF contact in almost every hole, seen visual copper sulphides in the majority of holes, and demonstrated the presence of a previously untested domal structure on Central, all in the opening stages of our program. Sitting next to MMG's Khoemacau mine and hosting more than 20 kilometres of contact in one of the world's most prominent copper belts gives us real discovery and scale potential."

Copper sulphide minerals -- in the form of chalcopyrite, in some cases accompanied by bornite and/or chalcocite -- have been observed in eight holes where they occur in minor amounts, over intervals of up to 10 metres or more. Galena, a lead sulphide mineral is also observed in the drill core: seen to form "haloes" peripheral to copper mineralization elsewhere on the KCB this may be a favourable proximity indicator. Visual observations are indicative in nature.

Following completion of the initial drill holes and receipt of sample analyses, stepout drilling will target zones of greatest interest. In the meantime, further holes are planned and in progress on the nose area and on both of the limbs. All such drilling works fall within the drilling program announced by Leviathan on June 2, 2026, which is continuing. All drill holes encountered Kalahari overburden (mostly sand) from surface to a depth of approximately 70 to 80 metres.

Drilling has been designed to target potential sediment-hosted copper mineralization of the style and magnitude observed at MMG Ltd.'s adjoining Khoemacau property, specifically at the DKF-NPF contact, in an area where this contact is folded into a very clear and prominent large domal structure -- the Hyena Hills dome. Over 20 kilometres of this prospective contact has been interpreted at Central from airborne electromagnetic survey data (news release dated April 23, 2026), as well as from high-resolution ground magnetic surveys completed at the property in 2023 to 2024. Initial drill holes were been positioned to locate the DKF-NPF contact with precision. Drilling works are being performed by Mitchell Drilling International using a Sandvik DE710 diamond rig. Mitchell draws on 57 years of drilling experience globally and in Africa, including almost 20 years of drilling under similar conditions within the KCB in Botswana. To date, no drill holes have been lost in the current program

Visual observations are preliminary, and laboratory assays are required to determine copper grades and potential mineralized interval widths. Core cutting, sampling and laboratory analysis are continuing. Assay results are expected in due course and may assist targeting and guide subsequent stepout drilling across the most prospective areas of the Central Dome. A portable XRF analyzer is now in use and will support rapid multielement geochemical screening of drill core, assisting with lithological correlation, alteration mapping and drill targeting while laboratory assays are pending.

About the Central project

The Central project, which directly adjoins MMG's Khoemacau group of deposits and discoveries (combined measured and indicated mineral resources of 94 Mt (million tonnes) at 1.8 per cent Cu (copper) and 22 g/t Ag (silver) and inferred mineral resources of 188 Mt at 1.6 per cent Cu and 20 g/t Ag) on the KCB which, together with the nearby Banana zone, Zone 6 and Ophion (combined measured and indicated mineral resources of 33 Mt at 1.4 per cent Cu and 21 g/t Ag, and inferred mineral resources of 141 Mt at 0.9 per cent Cu and 10 g/t Ag) were acquired by MMG Ltd. in 2023 for $1.9-billion (U.S.). Leviathan and its qualified person have been unable to independently verify the information in respect of MMG's Khoemacau group of deposits and the mineralization hosted on the Khoemacau deposits is not necessarily indicative of mineralization on Leviathan's project.

Central displays similar large-scale geological characteristics to those observed at Khoemacau, making the property prospective for a Tier 1 copper discovery. Specifically, all known KCB copper deposits -- including those of Khoemacau -- occur at or close to a well-understood stratigraphic contact (namely the interface between the D'Kar and Ngwako Pan formations) on the flanks or hinges of kilometer-scale antiforms or domes, typically within secondary folds, shears or other structural trap sites, which focused the mineralizing fluids.

The project boasts over 20 kilometres of this contact, mostly around the main domal structure referred to as the Hyena Hills dome, as supported by recent airborne electromagnetic data, as well as high-resolution ground magnetic data collected in 2023 and 2024. The Hyena Hills dome is the next dome south from those hosting the Khoemacau deposits and discoveries (including Zone 5 and Zone 9); each of the other domes at Khoemacau hosts at least two copper deposits or discoveries. The project area is almost entirely "blanketed" by a cover of poorly consolidated Kalahari sediments, exploration through this cover relying on a combination of geophysical methods and drilling. AEM data are commonly used to map and model a conductive marker unit, typically found approximately 100 to 200 metres above the DKF-NPF contact. Interpretations of this marker are used to increase confidence in the location of the DKF-NPF contact and in the identification of structures affecting it, which are considered important controls on mineralization.

Botswana is a politically stable pro-mining investment jurisdiction -- ranked No. 2 in Africa by the Fraser Institute (2024), enjoying investor-friendly legislation, a highly proficient and well-educated work force, and first world infrastructure -- set up to support mining, which is a pivotal and widely accepted national economic driver. The KCB is regarded by the USGS as one of the world's most prospective areas for sediment-hosted copper deposits.

Qualified person and data verification

Andrew Pedley (PrSciNat), a qualified person under National Instrument 43-101 -- Standards of Disclosure for Mineral Projects, has approved the scientific and technical information contained in this news release relating to the Central project. Mr. Pedley is a consultant for Leviathan and has observed the drill core and drilling information gathered to date.

About Leviathan Metals Corp.

Leviathan Metals, previously known as Leviathan Gold Ltd., is a Canadian-based mineral exploration company listed on the TSX Venture Exchange (LVX) and Germany (0GP).

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