Tiris Uranium Project Update

Aura Energy Limited (ASX: AEE, AIM: AURA) ('Aura' or the 'Company') is pleased to provide an update on the ongoing development of its Tiris Uranium Project (Project) in Mauritania. The Company continues to advance the Project towards production, making significant progress across key development requirements including water access, leadership appointments, engineering, and progressing funding options.

Aura Energy Managing Director, Andrew Grove, commented:

"The Tiris Uranium Project is advancing well towards execution readiness, and we are pleased to see significant progress across key development areas, especially with multiple funding opportunities. Securing a water supply, strengthening our operational leadership, and making significant strides in engineering and funding are all crucial steps as we move towards production. We remain committed to delivering long-term value for our shareholders while supporting the growing global demand for clean nuclear energy and developing a new industry and new uranium province in Mauritania which will create significant long-term benefits for the country and all stakeholders."

Water Supply confirmed by hydrological studies

Aura has successfully completed extensive hydrogeological studies at the Tiris Uranium Project, confirming the availability of sufficient water resources to support future operations. Recent drilling[1], pump testing and aquifer modelling by hydrogeological specialists Knight Piésold Consulting (Knight Piésold) has defined a ground water supply of 74 L/s, 57% in excess of the Project's water requirements (47 L/s). Ground water supplies include 44 L/s from the Touadeni Basin and 30 L/s from the C22 borefield.

Considering the potential for spare total capacity from multiple borefields with high groundwater prospectivity, the tested high prospectivity, especially in the Touadeni Basin, and the availability of several options to significantly expand current borefield size, as well as to add additional borefields over an available laterally extensive area as required, there is expected to be sufficient groundwater available for the Project life. Refer to Appendix 1 for more details.

Appointment of General Manager Operations

Aura is pleased to announce the appointment of Mohamed Sid'Ahmed as General Manager Operations (GMO) for the Tiris Uranium Project. A Mauritanian national and experienced mining executive and mining engineer, Mohamed brings extensive technical, operational and management expertise from both national and international projects. Most recently he was GMO of Leo Lithium's Goulamina lithium mine in Mali where he successfully led the mine's development, operational readiness and operations of the mine. Previously Mohamed held executive roles with Kinross at the Tasiast Gold and Teranga Gold Corporation Sabodala Gold Mine in Senegal. His appointment strengthens Aura's operational leadership as the Company progresses towards production.

Funding Options Advancing

The Company has made significant progress with potential financiers and strategic partners to secure funding for the development of the Tiris Project. Aura, along with its debt and strategic investment advisors, Orimco and Macquarie, continues to actively pursue these funding opportunities. However, at this time the proposals remain non-binding, confidential and not yet at a stage where they can be announced to the market.

Aura has engaged a western sovereign development bank to provide potential debt funding covering approximately 50-60% of the total project funding requirements. The bank is currently conducting due diligence and is scheduled to visit the Project in April 2025, with the goal of securing credit approval by mid-year.

Independent technical experts RPM Global, have completed its initial due diligence review.

Discussions with potential strategic equity investors are also progressing, with due diligence and term sheet negotiations underway. These processes are expected to align with the bank's credit commitment timeline.

While the funding timeline has been extended, substantial progress has been made. Meanwhile, development and engineering activities are continuing to progress in accordance with the overall development schedule.

Project development update

Engineering activities at Tiris remain on track for delivering the Project in early 2027. Focus areas include:

§ Basic engineering with Wood on schedule to be completed in July 2025

§ Process flowsheet locked with only minor amendments to the Front End Engineering Design (FEED) Study[2] flowsheet

§ The development procurement and contract Expressions of Interest (EOI) and Request for Proposal (RFP) process commenced within Mauritania (receiving over 190 responses) and internationally

§ Vendor test work commenced for performance guarantees

§ Refining Project mass and water balances

§ Detailed pumping and pipe design underway

§ Piping and Instrumentation Diagram (P&ID) development underway

§ Power optimisation study received

§ Dynamic simulation commenced

§ Detailed Project execution planning well advanced

Aura continues to have collaborative and supportive engagement with the Mauritanian government at all levels as we advance the Project towards production in 2027. Licensing has commenced for the water supply and airstrip registration as well as discussions with the Gendarmerie with respect to future site and uranium oxide transport security. The ESIA and Project operating plans are also being updated to reflect the evolution of the Project and current international performance standards.

Next Steps

Aura Energy remains focused on de-risking and advancing the Tiris Uranium Project towards production. In the coming months, the Company will:

§ Progress discussions and support financiers to deliver Project funding

§ Advance Project engineering

§ Advance Project execution planning

The Company will continue to provide regular updates as developments progress.

This release has been approved by the Board of Aura Energy Ltd.

The Company is focused on developing a uranium mine at the Tiris Uranium Project, a major greenfield uranium discovery in Mauritania. The 2024 FEED Study[3] and Production Target Update[4] demonstrate Tiris to be a near-term low-cost uranium mine producing 2Mlbspa U3O8 over a 25-year mine life with excellent economics and optionality to expand and to accommodate future exploration success.

• 13 Dec 2024 - Tiris Uranium Project Alternative Production Targets
• 12 June 2024 - Aura increases Tiris Mineral Resources by 55% to 91.3Mlbs U3O8
• 20 Dec 2024 - Substantial increase in Tiris Uranium Project Ore Reserves

Appendix 1 - Water drilling

Knight Piésold was requested to support Aura with a review of existing work and evaluation of previously identified groundwater sources, and to undertake additional exploration studies to define supplementary project scale groundwater supply options within a 150 km radius from the proposed Tiris Uranium Project processing plant, Figure 1.

Three exploration areas were identified in preliminary desktop studies, these being:

§ The process plant area

§ The previously explored and drilled C22 borefield area, approximately 20 km from the processing plant

§ The Touadeni Basin area 100 km to 120 km to the south of the processing plant

A groundwater exploration drill programme was designed and executed in 2024, including drilling and aquifer testing of successful exploration bores at the three identified target areas. A total of 26 exploration bores were drilled in 2024 at the Touadeni Basin area, 17 bores at the C22 area and 6 bores at the process plant area. Successful bores were drilled at the C22 and Touadeni areas, with drilling airlifts ranging up to about 15 L/s (54 m3/hr) at the Touadeni Basin, and up to about 11 L/s (39 m3/hr) at the C22 area and detailed in the release dated 16 Dec 2024 - Substantial increase in Tiris Uranium Project Ore Reserves.

A number of the successful boreholes were selected for long term pump testing, nine at Touadeni Basin and four at the C22 borefield. At each borehole four 60-minute tests (step tests) were conducted before the constant rate test (CRT) commenced, to determine the flow rate for the 24-hour CRT.

Drilling, pump testing and aquifer modelling by Knight Piésold at both the Touadeni Basin and C22 borefield confirmed a combined ground water supply of 74 L/s (2.3 GL/annum or 266 m3/hr). This exceeds the Project's water demand of 47 L/s (1.5 GL/annum or 169 m3/hr) by 57%, ensuring spare capacity.

§ C22 borefield area - 30 L/s (109 m3/hr) - conductivity between 9,500 μS/cm and 20,000 μS/cm

§ Touadeni Basin - 44 L/s (158 m3/hr) - conductivity between 700 μS/cm and 13,900 μS/cm

Several additional high-potential groundwater targets remain unexplored at the C22 borefield, Touadeni Basin and process plant sites. Furthermore, the broader region offers significant opportunities for further exploration in all three areas, particularly the Touadeni Basin's sandstone and dolomite formations. These formations produced the highest producing bores in the 2024 exploration program, as indicated by both initial drilling and aquifer modelling results.

With multiple borefields demonstrating strong groundwater potential, proven high yields in the Touadeni Basin, and opportunities for expansion across an extensive lateral area, the available groundwater supply is expected to be sufficient for the Project.

Water sample analysis is ongoing and is being integrated into the project flowsheet and design. Based on positive findings, detailed pipeline and pumping designs are underway. Additionally, comprehensive groundwater management and borefield development plans are being prepared. Licensing for the identified borefields has also commenced.

Figure 1: Location plan of the Tiris Uranium project hydrogeological evaluation

[1] ASX and AIM Release: 16 Dec 2024 - Substantial increase in Tiris Uranium Project Ore Reserves

[4] ASX and AIM Release: 11 Sept 2024 - Updated Production Target Improves Economics at Tiris

[5] ASX and AIM Release: 10 Oct 2019 - Häggån Battery Metal Project Resource Upgrade Estimate

[7] ASX and AIM Release: 5 Sept 2023 - Scoping Study Confirms Scale and Optionality of Häggån