DART MINING NL — Share Issue/Capital Change 2026

May 28, 2026

DART MINING

ASX Release

29 May 2026

DTM Acquires Gold, Copper, Uranium & Tungsten Tenement Package in the Northern Territory

Dart Mining NL (ASX:DTM) (Company or DTM) is pleased to announce that it has entered into a binding term sheet (Agreement) with Core Uranium Limited (ACN 652691579) (Core) for the acquisition of seven highly prospective EL Applications (4,717sq.km.) in the heavily mineralised Pine Creek Orogen in the Northern Territory of Australia (together, the Project).

HIGHLIGHTS

• DTM to acquire ~4,700km² in tenement applications as a package in the Pine Creek region of the Northern Territory, prospective for Gold, Copper, Tungsten, Tin, and Uranium.
• Total consideration of A$150,000, comprising a cash deposit of A$3,000 paid 27 May 2026, and the balance of cash due at completion.
• Confirmed Gold, Copper, Tungsten, Tin and Uranium occurrences within the tenement areas.
• The Project has high gold prospectivity typical of the Pine Creek Orogen and additionally associated with unconformity related uranium deposits.
• The Project contains historic tin and tungsten mines at the Yeuralba mineral field and gold-copper mineralisation in the Eva Valley area at Ludans, Ghost Gums, Twin Ridges and along strike from the Copper Flower deposit (Copper Flower is located in excluded MCNs within the tenements forming the project)⁵.
• The Project has uranium occurrences scattered across the tenement package and coincides with favourable locations for large scale unconformity related uranium deposits.
• DTM’s balance sheet strengthened following ~A$1.3M (before costs) Company led capital raising.

DART MINING’S CHAIRMAN, JAMES CHIRNSIDE, COMMENTED:

“The acquisition of this large tenement package in a highly mineralised region, at an attractive price, gives the company exposure to gold, copper, tin and tungsten prospectivity and, subject to favourable regulatory changes, a strong position in a region well known for world class uranium deposits.”

Webpage: www.dartmining.com.au

LinkedIn: Dart Mining NL

Twitter: @DartMining

Contact: James Chirnside

Email: jchirnside@dartmining.com.au

Mobile: +61 447 447 613

Dart Mining NL

ABN: 84 119 904 880

Level 6, 412 Collins Street

Melbourne VIC 3000

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Figure 1 - Location of Core Uranium tenement application package.

Completion of the proposed acquisition is subject to the satisfaction of certain conditions precedent, namely, technical due diligence, the execution of formal transaction documents, and Ministerial approval for the transfer of the tenement applications.

GEOLOGY AND MINERAL OCCURRENCES

The Pine Creek Orogen comprises a succession of sedimentary and volcanic rocks unconformably overlying Neoarchean granitic basement intruded by Paleoproterozoic mafic rocks and granites $^{1}$ .

The Pine Creek Orogen is highly mineralised with over 1,000 known mineral occurrences, it contains over $20\%$ of the world's low-cost uranium resources and has a gold endowment in excess of 12 million ounces $^{1}$ .

Base metals, tin, tungsten and iron ore have been historically mined in the region. Tantalum and platinum group elements (PGEs) are also present in particular deposits, e.g. PGEs at the Coronation Hill gold-platinum-palladium deposit (historically a uranium mine).

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Major uranium deposits occur in the Nimbuwah Domain, the most easterly of the three Domains in the Orogen. These deposits are known as unconformity related uranium hosted within the basal Paleoproterozoic strata close to tectonised contacts with the Neoarchean basement¹. The total endowment² of Ranger 1 and 3 stands at 130,000 t of uranium metal contained in ore grading 0.24–0.37% U₃O₈. Ranger is one of the world's largest uranium producers.

Fault related uranium occurs in the Pine Creek Orogen, for example the Thunderball prospect near Hayes Creek.⁴

Gold deposits in the Pine Creek Orogen are generally associated with late to post orogenic, I-type Cullen Supersuite granites.

Several of the unconformity-related U deposits are characterised by significant gold enrichments, e.g. Jabiluka (Figure 1): 4.6Mt ore at 3.07g/t Au.

The tenements being acquired contain the projected south easterly extension of the Coronation Hill-El Sherana NW trending faults that host significant gold, PGE and uranium mineralisation.

Historic tin and tungsten mines occur within the tenements in the eastern half of the Yeuralba mineral field.

PROXIMATE STATEMENTS

This announcement contains references to JORC Mineral Resources derived by other parties either nearby or proximate to the Project and includes references to geological similarities to that of the Project. It is important to note that such discoveries or geological similarities do not in any way guarantee that the Company will have any success or similar successes in delineating a JORC compliant Mineral Resource on the Project, if at all.

KNOWN MINERALISATION IN THE TENEMENT PACKAGE (See Figure 2)

1. Uranium occurrences are scattered across the tenement package and generally coincide with favourable locations for large scale unconformity related uranium deposits.
2. The ABC Prospect has secondary uranium mineralisation linked to fault-controlled fluid flow in volcanic units within the Kombolgie sequence. The primary source of the mineralisation has not been located and is a key target. Repeat occurrences and extensions may also be present and are obvious early targets.
3. The eastern Yeuralba mineral field covers a substantial area and contains a number of historic tin-tungsten mines.
4. Strike extensions to the Cu-Au deposit at Copper Flower (in excluded MCNs within the tenement package) are an obvious early target. The Copper Flower deposit is known to be faulted along strike and strike extensions, if present, would fall within the tenements being acquired. Historic drilling was confined to the shallow oxide Cu-Au zone and there is significant potential to use geophysics along the strike to locate possible sulphide ore bodies at depth.

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Figure 2 - Mineral occurrences within the Core Uranium tenement application package.

KEY TARGETS FOR EXPLORATION

1. Exploration for unconformity-related uranium deposits in Palaeoproterozoic metasediments below a thick cover of Kombolgie sandstone. The tenements are highly prospective for world class high-grade uranium deposits along the unconformity.
2. The southeast extension of the Coronation Hill-El Sherana-Sleisbeck Au-PGE-U deposits provide a strong target by exploring the fault extensions into the tenement package.
3. Gold enrichments associated with or peripheral to unconformity style uranium deposits.
4. Gold deposits associated with I-type intrusive related mineralised fluids and especially hosted in anticlines, favourable rock units and veins.
5. Historic tin and tungsten mines in the eastern half of the Yeuralba mineral field.
6. Tin deposits similar to the nearby substantial Maranboy tin deposit and historic mine (the largest tin endowment in the NT). Associated tungsten and tantalum.
7. Gold-base metal deposits such as the Cu-Au deposit at Copper Flower (in excluded MCNs within the tenement package) and surrounding gold and base metal prospects in the tenements at Ludans, Ghost Gums and Twin Ridges with kilometres of strike length along the mineralised banded iron formation. $^{5}$

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REFERENCES

$^{1}$ Julie A. Hollis and Andrew S. Wygralak (2012). A review of the geology and uranium, gold and iron ore deposits of the Pine Creek Orogen. Published online March 1, 2012
$^{2}$ MODAT, 2011, Mineral Occurrence Database, Northern Territory Geological Survey, Digital Information Package DIP003 (September 2011).
$^{3}$ Julien Mercadier, Roger G. Skirrow, Andrew J. Cross (2016). Uranium and gold deposits in the Pine Creek Orogen (North Australian Craton): A link at 1.8Ga? In: Precambrian Research, Vol 238, pp111-119. Published by Elsevier.
$^{4}$ Rockland Resources. Annual Report for Exploration Licence EL25553 Hayes Ck Project For period 26/7/2017 to 25/7/2018.
$^{5}$ Denehurst Limited. (1988). Compilation and Progress Report EL4457, Eva Valley, N.T. (CRO1988 – 0480).

PLACEMENT

The Company is pleased to announce that it has received firm commitments from professional and sophisticated investors to raise A$1,310,678.88 (before costs) through the issue of 52,427,155 new fully paid ordinary shares at $0.025 per share. 31,456,293 shares will be issued under Listing Rule 7.1 and 20,970,862 will be issued under Listing Rule 7.1A.

The Placement price represents a 19.3% discount to the Company's 15-day VWAP.

In addition, the Company will seek shareholder approval to issue one free (1) option for every share subscribed for under the placement. The 52,427,155 options will be listed options exercisable at $0.051 and expiring 31 October 2028 (ASX:DTMOC).

This was a Company managed placement with no lead manager appointed. A 3% selling fee and 3% management fee on the gross amount raised under the offer is payable to AFSL Holders. The Company will also seek shareholder approval to issue 5,242,716 Broker Shares and 26,213,578 Broker Options in relation to the placement on the same terms as above.

There are no related parties, as per Listing Rule 10.11, participating in the Placement.

The net funds raised in the Placement will be used to further advance drilling on Dart's flagship Triumph Gold Project, cash consideration for the acquisition of the Core Uranium Tenement package, conduct metallurgical testing and resource calculations on the Coonambula Antimony-Gold JV Project with Great Divide Mining (ASX: GDM) in Central Queensland, Drilling and surface sampling at the company's 100% owned Walwa Tin, Tungsten, Tantalum, Niobium Project in NE Victoria, various desktop and field activities related to the Core Uranium tenement package as well as for working capital.

Approved for release by the Board of Directors.

For more information contact:

James Chirnside
Managing Director
Dart Mining NL
jchirnside@dartmining.com.au
+61 419 605 842
InvestorHub Link

Terry Bates
Director
Dart Mining NL
tbates@dartmining.com.au