Mr. Luke Norman reports

DIAMOND DRILLING PROGRAM UNDER WAY AT LEVIATHAN METALS' CENTRAL PROJECT, KALAHARI COPPER BELT, BOTSWANA

The diamond core drilling program of up to 10,000 metres is under way at Leviathan Metals Corp.'s 100-per-cent-owned Central project, Kalahari copper belt, Botswana.

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 D'Kar-Ngwako Pan formation contact, in an area where this contact is folded into a very clear and prominent domal structure -- the Hyena Hills dome. Over 20 kilometres of this prospective contact have been interpreted at Central from recent airborne electromagnetic survey data (news release dated April 23, 2026), as well as from high-resolution ground magnetic surveys completed at the property in 2023-2024. Initial drill holes are being positioned to locate the DKF-NPF contact with precision. Subsequent holes will then be applied in testing the contact in a series of prioritized structural target areas. Mineralization hosted on the Khoemacau property is not necessarily indicative of mineralization on Leviathan's project.

Leviathan chief operations officer Jeremy Crozier remarked: "We are very excited to have commenced drilling of this remarkable target -- with the objective of demonstrating the potential of Central to host further Khoemacau type mineralization. Our budget for this program will allow us to perform our work at a property scale, casting a net around the full extent of Central's dome structures. We look forward to working with our Botswanan geological team and Mitchell Drilling over the coming months in fulfilment of this campaign."

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.

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 million tonnes of 1.8 per cent copper and 22 grams per tonne silver and inferred mineral resources of 188 Mt of 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 of 1.4 per cent Cu and 21 g/t Ag and inferred mineral resources of 141 Mt of 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 kilometre-scale anti-forms 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, with exploration through this cover relying on a combination of geophysical methods and drilling. Airborne electromagnetics data are commonly used to map and model a conductive marker unit, typically found approximately 100 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 and the Serule uranium project. Mr. Pedley is a consultant for Leviathan.

About Leviathan Metals Corp.

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

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