Announcement PDF DevEx to Acquire Alligator Energy’s Entire Tenure Package in the World-Class Alligator Rivers Uranium Province, NT The acquisition pieces together an extensive, contiguous 9,200km2 ground holding of advanced uranium prospects surrounding DevEx’s Nabarlek Uranium Project Highlights • DevEx has entered into a binding agreement with Alligator Energy Limited (ASX:AGE, AGE) to acquire 100% of its entire uranium exploration tenement package in the Alligator Rivers Uranium Province (ARUP) in the Northern Territory. • The ARUP, an established uranium mining jurisdiction, lies on the north-western margin of the McArthur Basin and is well known for its uranium potential – with over 700Mlbs*1 of uranium endowment already defined. • The acquisition consolidates multiple highly prospective uranium corridors under DevEx’s ownership, in: – Nabarlek North: The acquisition ties together over 50 kilometres of under-explored uranium-bearing faults, including the highly prospective U40 and Angularli Fault Zones, both known for their uranium mineralisation. – Tin Camp Creek: The acquisition links together the Nabarlek Fault Corridor extending south to the Orion Fault Corridor, comprising several historical uranium prospects, including the deposit at Caramal, where AGE previously defined a historical Inferred Mineral Resource Estimate (MRE) of 6.5Mlbs @ 0.31%U3O8 1 • With most exploration activities taking place over a decade ago, DevEx sees significant opportunity to assess and follow-up numerous historical uranium intercepts along these prospective fault corridors in conjunction with the broader opportunity in the region. • Together with DevEx’s recent acquisition of Rio Tinto Exploration Pty Limited’s adjacent tenements2 , this acquisition aligns with DevEx’s regional growth strategy, which is focused on exploring for high-grade, unconformity-related uranium within the same proven geological setting as the Nabarlek, Ranger and Jabiluka deposits. 1 Cautionary Statement The Caramal Inferred MRE presented here was previously reported by AGE under the JORC Code 2004 to ASX on 19 April 2012, in an announcement titled "Alligator announces Caramal resource of 6.5Mlb U3O8 @ 0.31%". The exploration results were previously reported by AGE under the JORC Code 2004 to ASX on 13 November 2012 and 14 December 2012 and under the JORC Code 2012 to ASX on 16 October 2013 and 13 December 2013. It is acknowledged that: • the exploration results and Inferred MRE have not been reported in accordance with the JORC Code 2012 (except as noted); • a Competent Person has not done sufficient work to disclose the exploration results and Inferred MRE in accordance with the JORC Code 2012 (except as noted); • it is possible that following further evaluation and/or exploration work that the confidence in the prior reported exploration results may be reduced when reported under the JORC Code 2012; • it is possible that following evaluation and/or further exploration work the currently reported estimates may materially change and hence will need to be reported afresh under and in accordance with the JORC Code 2012; • after review of the original AGE exploration results and Inferred MRE, nothing has come to the attention of DevEx that causes it to question the accuracy or reliability of AGE's reported exploration results or Inferred MRE for the Caramal deposit; but • DevEx has not independently validated AGE's exploration results or Inferred MRE and therefore is not to be regarded as reporting, adopting or endorsing those results or estimates. ASX Announcement 1 December 2025 ASX:DEV DEVEX TO ACQUIRE ALLIGATOR ENERGY’S ENTIRE TENURE PACKAGE IN THE WORLD-CLASS ALLIGATOR RIVERS URANIUM PROVINCE, NT ASX:DEV 2 DevEx Resources Limited (ASX: DEV; “DevEx” or “the Company”) is pleased to announce that it has entered into a binding agreement with Alligator Energy Limited (ASX: AGE, AGE) to acquire its entire uranium exploration tenement package located within the world-class Alligator Rivers Uranium Province (ARUP) in the Northern Territory (Figure 1) Analogous to the world-class Athabasca Basin in Canada, home to some of the world’s most significant uranium mines, the ARUP lies on the north-western margin of the McArthur Basin which is known for its 700Mlbs1 of uranium endowment and is highly prospective for large scale unconformity type uranium deposits like those already discovered at Nabarlek, Ranger and Jabiluka (Figure 1). In addition to significantly expanding DevEx’s existing exploration footprint in this well-endowed uranium province, the acquisition ties together several priority exploration targets that lie along highly prospective uranium-bearing fault corridors south and east of the historical Nabarlek Uranium Mine. Following the acquisition, DevEx will hold 9,200 square kilometres of premier uranium exploration ground surrounding the historical Nabarlek Uranium Mine (past production of 24Mlbs at 1.84% U3O8) and directly east of two of Australia’s major uranium deposits, the (now closed) Ranger Mine (300Mlbs at 0.23% U3O8) and the Jabiluka deposit (307Mlbs at 0.55% U3O8). Figure 1: DevEx’s expanded tenement holding in the Nabarlek Project region following the acquisition of the tenement packages from Alligator Energy Limited and Rio Tinto Exploration Pty Ltd (Company tenements are combined where continuous and minor excisions are removed for ease of presentation). [3 Caramel Inferred MRE - Refer 1 – Cautionary Statement] DEVEX TO ACQUIRE ALLIGATOR ENERGY’S ENTIRE TENURE PACKAGE IN THE WORLD-CLASS ALLIGATOR RIVERS URANIUM PROVINCE, NT ASX:DEV 3 Managing Director Comment DevEx Managing Director Marnie Finlayson said: “The acquisition of Alligator Energy’s tenure package represents a major step forward for DevEx. Together with the recent Rio Tinto acquisition, we have now assembled all the pieces of a dominant and contiguous land-holding in one of the world’s premier uranium exploration districts. This will give us a much clearer line of sight as to where the next big discovery may lie, allowing us to leverage the excellent technical work completed by DevEx over the past few years. “Securing these tenements from Alligator Energy strengthens our footprint around the historical Nabarlek Mine and provides us with an exceptional pipeline of targets along proven uranium-bearing structures. With one of the largest and most strategic land positions in the Alligator Rivers Uranium Province, we are now exceptionally well positioned to advance a district-scale exploration strategy.” Nabarlek North – Fault Corridor The acquisition ties together over 50 kilometres of under-explored and highly prospective uranium- bearing faults, including the highly prospective U40 and Angularli Fault Zones – both known for their uranium mineralisation. Importantly, the acquisition provides DevEx with the opportunity to progress expanded exploration activities on these granted tenements both: • To the north of its U40 Prospect, where previous drilling has defined high-grade, shallow uranium mineralisation over 500 metres of strike, with better results including: – 6.0m @ 7.6% U3O8 from 75m (NAD7492); and – 4.8m @ 1.9% U3O8 from 80m (NAD7493). • Following the extension of the Angularli Fault Zone to the south-east from DevEx’s recently granted tenements at the Spitfire Prospect. Tin Camp Creek – Orion Fault Corridor The Orion Fault Corridor comprises a series of north trending basement fault zones that encompass several uranium prospects, including the uranium deposit at Caramal, where AGE previously defined an historical Inferred MRE of 6.5Mlbs @ 0.31%U3O8 2 . This fault corridor continues north onto DevEx’s Nabarlek Project tenure and links up with the Nabarlek Fault Corridor where recent uranium exploration targets have been defined by DevEx, including the Big Radon Prospect. At Caramal, a historical Inferred MRE of 944,000 tonnes @ 3,100ppm U3O8 (0.31% U3O8) for 6.5Mlb of contained U3O8 at a cut-off grade of 1,000ppm U3O8 (JORC Code 2004 – see Table 1). The Inferred MRE was prepared by GeoSynthesis Pty Ltd in 2012 and reported in accordance with the JORC Code 2004 to the ASX by AGE (refer to company announcement 19 April 2012). 2 Cautionary Statement The Caramal Inferred MRE presented here was previously reported by AGE under the JORC Code 2004 to ASX on 19 April 2012, in an announcement titled "Alligator announces Caramal resource of 6.5Mlb U3O8 @ 0.31%". The exploration results were previously reported by AGE under the JORC Code 2004 to ASX on 13 November 2012 and 14 December 2012 and under the JORC Code 2012 to ASX on 16 October 2013 and 13 December 2013. It is acknowledged that: • the exploration results and Inferred MRE have not been reported in accordance with the JORC Code 2012 (except as noted); • a Competent Person has not done sufficient work to disclose the exploration results and Inferred MRE in accordance with the JORC Code 2012 (except as noted); • it is possible that following further evaluation and/or exploration work that the confidence in the prior reported exploration results may be reduced when reported under the JORC Code 2012; • it is possible that following evaluation and/or further exploration work the currently reported estimates may materially change and hence will need to be reported afresh under and in accordance with the JORC Code 2012; • after review of the original AGE exploration results and Inferred MRE, nothing has come to the attention of DevEx that causes it to question the accuracy or reliability of AGE's reported exploration results or Inferred MRE for the Caramal deposit; but • DevEx has not independently validated AGE's exploration results or Inferred MRE and therefore is not to be regarded as reporting, adopting or endorsing those results or estimates. DEVEX TO ACQUIRE ALLIGATOR ENERGY’S ENTIRE TENURE PACKAGE IN THE WORLD-CLASS ALLIGATOR RIVERS URANIUM PROVINCE, NT ASX:DEV 4 Table 1: Caramal Historical Mineral Resource Estimate (note: JORC Code 2004)3 Tonnage Grade U3O8 Contained U3O8 Low cut-off U3O8 Top cut-off U3O8 944,000 0.31 % 6.5Mlb 0.1% 1.4% 3,100 ppm 2,950t 1,000 ppm 14,000 (note figures have been rounded) After reporting the historical Caramal Inferred MRE, AGE reported additional drilling results outside of the Inferred MRE in the latter half of 2012 (in accordance with the JORC Code 2004 – see Table 3) and in 2013 in accordance with the JORC Code 2012, with significant intercepts including: • 23m @ 1,504ppm U3O8 from 133m in OBD12-057 incl: – 12m @ 2,302ppm U3O8 from 133m • 12m @ 1,330ppm U3O8 from 109m in OBD12-059 and 8m @ 2,464ppm U3O8 from 126m • 4m @ 1,038ppm U3O8 from 150m in OBD12-054 • 26m @ 1,854ppm U3O8 from 123m in OBRD12-067 incl: – 15m @ 3,005ppm U3O8 from 130m • 15m @ 4,371ppm U3O8 from 75m in OBRD12-068 incl: – 5m @ 9,278ppm U3O8 from 76m • 6m @ 966ppm U3O8 from 114m in OBR13-0753 Caramal Inferred MRE and Exploration Results In the reporting of the historical Caramal Inferred MRE and subsequent Exploration Results, the Company notes the following: • That the results/estimates have been reported by the former owner rather than the acquirer The Inferred MRE for the Caramal Prospect was first reported by AGE in 2012 and has not been fully vetted by DevEx Resources Limited. The Exploration Results at Caramal which are referred to in this announcement were first reported by AGE subsequent to the Caramal Inferred MRE in 2012 and have not been fully vetted by DevEx Resource Limited. • The source and date of the reporting of the results/estimates The reporting of the Caramal Inferred MRE can be found in the announcement by AGE dated 19 April 2012 titled “Alligator announces Caramal resource of 6.5Mlb U3O8 @ 0.31%”. That announcement is available on the ASX website under the ASX code "AGE". The subsequent Exploration Results at Caramal were prepared and reported by AGE’s competent person in 2012 in accordance with the JORC Code 2004 and announced to the ASX by AGE on 13 3 Cautionary Statement The Caramal Inferred MRE presented here was previously reported by AGE under the JORC Code 2004 to ASX on 19 April 2012, in an announcement titled "Alligator announces Caramal resource of 6.5Mlb U3O8 @ 0.31%". The exploration results were previously reported by AGE under the JORC Code 2004 to ASX on 13 November 2012 and 14 December 2012 and under the JORC Code 2012 to ASX on 16 October 2013 and 13 December 2013. It is acknowledged that: • the exploration results and Inferred MRE have not been reported in accordance with the JORC Code 2012 (except as noted); • a Competent Person has not done sufficient work to disclose the exploration results and Inferred MRE in accordance with the JORC Code 2012 (except as noted); • it is possible that following further evaluation and/or exploration work that the confidence in the prior reported exploration results may be reduced when reported under the JORC Code 2012; • it is possible that following evaluation and/or further exploration work the currently reported estimates may materially change and hence will need to be reported afresh under and in accordance with the JORC Code 2012; • after review of the original AGE exploration results and Inferred MRE, nothing has come to the attention of DevEx that causes it to question the accuracy or reliability of AGE's reported exploration results or Inferred MRE for the Caramal deposit; but • DevEx has not independently validated AGE's exploration results or Inferred MRE and therefore is not to be regarded as reporting, adopting or endorsing those results or estimates. DEVEX TO ACQUIRE ALLIGATOR ENERGY’S ENTIRE TENURE PACKAGE IN THE WORLD-CLASS ALLIGATOR RIVERS URANIUM PROVINCE, NT ASX:DEV 5 November 2012 and 14 December 2012. Further drilling results were prepared and reported by AGE in 2013 in accordance with the JORC Code 2012 and announced to ASX on 16 October 2013 and 13 December 2013. These results are reported in Table 4 for completeness where it is noted whether they have been reported under the JORC Code 2004 or the JORC Code 2012. • Which edition of the JORC Code they were reported under The statement of the historical Caramal Inferred MRE, which was reported under the JORC Code 2004 may not conform to the requirements of the JORC Code 2012. The reporting of the additional Exploration Results at Caramal, subsequent to the reporting of the Caramal Inferred MRE were prepared and reported by AGE in accordance with the JORC Code 2004. • The acquirer’s view on the reliability of the results/estimates, including by reference to any of the criteria in Table 1 of JORC 2012 which are relevant to understanding the reliability of results/estimates Nothing has come to the attention of DevEx that causes it to question the accuracy or reliability of the AGE's reporting of the Caramal Inferred MRE or the modifying factors, used by the former owners. The Company’s personnel have reviewed the methodology and available reporting documents used to estimate the Mineral Resource and the Company notes that the personnel involved in the historical estimate had a high level of experience in the estimation of uranium resources. In addition, nothing has come to the attention of DevEx that causes it to question the technical reliability of the historical Caramal MRE. The Caramal Inferred MRE was undertaken by a reputable Australia-based consultancy firm; however, neither DevEx nor its consultants have reviewed the MRE in sufficient detail to make a judgement on its veracity. Future estimates will likely need to incorporate additional assessment of geological models, QAQC of chemical data sets and onsite verification of underlying drill hole data sets. • To the extent known, a summary of the work programs on which the results/estimates were based and, for estimates only, a summary of the key assumptions, mining and processing parametres and methods used to prepare the estimates The Caramal Inferred MRE modelling was based on a total of 32 diamond drill holes drilled in three phases from 1972, 1996-1998 and 2011. Although drill spacing is irregular throughout the deposit, an average drill spacing of around 20m was assumed. The re-logging of 31 drill holes, and review of geological logs were used for sectional interpretations, digitisation and conversion to 3D wireframes. The mineralised body was constructed on a combination of geological boundaries and applies an approximate cut-off grade of 500ppm U3O8. Resource estimation was undertaken by inverse distance squared interpolations in Micromine for the creation of a block model with block dimensions 10mx10mx4m. Sub-blocking to 5mx5mx2m block sizes was undertaken around the periphery of the model to conform more accurately to the wireframe boundaries. A top cut of 1.4% U3O8 was applied based on examination of population statistics data. A density of 2.75t/m3 was applied to slightly weathered and fresh Cahill Formation Schists and breccias and a density of 2.5t/m3 was applied to supergene mineralisation in moderately weathered lithologies on the outcropping mineralisation located at the south-eastern part of the deposit. A high cut-off grade (1000ppm U3O8) was used to further constrain the reported resource. It was noted that assaying of lower grade material during the 1972 program was not always undertaken and therefore grade estimates below 1000ppm U3O8 may not be representative of the true resource. The report does not discuss mining and processing parameters. DEVEX TO ACQUIRE ALLIGATOR ENERGY’S ENTIRE TENURE PACKAGE IN THE WORLD-CLASS ALLIGATOR RIVERS URANIUM PROVINCE, NT ASX:DEV 6 • Any more recent results/estimates or data relevant to the reported results/estimates available to the entity Subsequent to the reporting of the historical Inferred MRE, AGE drilled additional holes surrounding the periphery of the Inferred MRE in the latter half of 2012 and 2013 (see Table 3). These holes were reported under the JORC Code 2004. Further holes were drilled in 2013 and those holes were reported under the JORC Code 2012. These holes tested zones outside of the Inferred MRE. DevEx does not currently have a view on the significance of the uranium mineralisation reported from these holes other than to note they were targeting extensions to the uranium mineralisation at Caramal. It is DevEx’s intention to review these and other historical holes from Caramal during the latter part of the wet season in early 2026. • The evaluation and/or exploration work that needs to be completed to report the results/estimates in accordance with JORC 2012 DevEx plans to review both the historical Caramal Inferred MRE in accordance with JORC Code 2012 guidelines, and the subsequent historical Exploration Results, including site visits and drill core review and assessment of the geological framework and faults which guide the wireframes used by the former owner. • The proposed timing of any evaluation and/or exploration work that the acquirer intends to undertake and a comment on how the acquirer intends to fund the work Due to the quality of the work undertaken by the previous workers, it is envisaged that much of this work could be undertaken on a desk-top basis if no material items are identified. This desk-top work, which is envisaged to commence shortly after acquisition, will be funded out of existing cash reserves and is expected to be completed within six months. • A statement by a named Competent Person that the information in the market announcement provided is an accurate representation of the available data and studies for the Caramal deposit The information in this announcement that relates to the Caramal Inferred MRE is an accurate representation of the available data for the project. Information that relates to the JORC (2004) Caramal Inferred MRE is based on information compiled by AGE and their consultants and was reviewed by Mr Brendan Bradley. Mr Bradley is a member of the Australian Institute of Geoscientists and has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined under the 2012 JORC Code. Mr Bradley consents to the inclusion in the report of the matters based upon the information in the form and context in which it appears. DEVEX TO ACQUIRE ALLIGATOR ENERGY’S ENTIRE TENURE PACKAGE IN THE WORLD-CLASS ALLIGATOR RIVERS URANIUM PROVINCE, NT ASX:DEV 7 Table 2: Caramal Historical Exploration Results reported subsequent to, and outside of, the historical Caramal Inferred MRE reported by AGE in April 20124 Hole ID MGA94 Easting MGA94 Northing Azimuth (mag) Dip JORC Code From (m) Length (m) U3O8 (ppm) OBD12-053 321560 8617631 270 -60 2004 97 4 678 OBD12-054 321561 8617631 270 -50 2004 117 3 500 and 138 3 595 and 150 4 1038 OBD12-055 321602 8617598 192 -50 2004 NSI OBD12-056 321564 8617638 225 -50 2004 NSI OBD12-057 321562 8617642 295 -50 2004 133 23 1504 including 133 12 2302 OBD12-058 321570 8617636 295 -60 2004 NSI OBR12-059 321492 8617717 195 -60 2004 109 12 1330 and 126 8 2464 OBD12-060 321495 8617720 20 -80 2004 113 1 710 OBRD12-061 321561 8617642 247.5 -50 2004 83 2 472 OBRD12-062 321561 8617642 335 -70 2004 NSI OBRD12-063 321771 8617823 270 -60 2004 NSI OBRD12-064 322497 8617912 90 -75 2004 NSI OBRD12-065 321216 8617628 80 -80 2004 NSI OBRD12-066 321211 8617542 0 -90 2004 NSI OBRD12-067 321414 8617753 150 -52 2004 123 26 1854 including 130 15 3005 OBRD12-068 321299 8617696 156 -50 2004 75 15 4371 including 76 5 9278 OBRD12-069 321645 8617823 330 -65 2004 NSI OBRD13-070 321409 8617762 0 -90 2012 NSI OBR13-071 321297 8617696 121 -70 2012 NSI OBRD13-072 321293 8617698 250 -70 2012 NSI OBR13-073 321297 8617696 350 -60 2012 NSI OBR13-074 321299 8617694 140 -50 2012 110 9 652 OBR13-075 321349 8617702 128 -55 2012 114 6 996 OBR13-076 321606 8617789 310 -85 2012 NSI OBR13-077 322809 8618184 335 -75 2012 NSI OBR13-078 321416 8617775 85 -68 2012 NSI OBR13-079 321405 8617778 265 -53 2012 NSI OBR13-080 321445 8617816 40 -65 2012 NSI NSI: No Significant Uranium Intercept 4 Cautionary Statement The exploration results were previously reported by AGE under the JORC Code 2004 to ASX on 13 November 2012 and 14 December 2012 and under the JORC Code 2012 to ASX on 16 October 2013 and 13 December 2013. It is acknowledged that: • the exploration results have not been reported in accordance with the JORC Code 2012 (except as noted); • a Competent Person has not done sufficient work to disclose the exploration results in accordance with the JORC Code 2012 (except as noted); • it is possible that following further evaluation and/or exploration work that the confidence in the prior reported exploration results may be reduced when reported under the JORC Code 2012; • it is possible that following evaluation and/or further exploration work the currently reported estimates may materially change and hence will need to be reported afresh under and in accordance with the JORC Code 2012; • after review of the original AGE exploration results, nothing has come to the attention of DevEx that causes it to question the accuracy or reliability of AGE's reported exploration results; but • DevEx has not independently validated AGE's exploration results and therefore is not to be regarded as reporting, adopting or endorsing those results or estimates. DEVEX TO ACQUIRE ALLIGATOR ENERGY’S ENTIRE TENURE PACKAGE IN THE WORLD-CLASS ALLIGATOR RIVERS URANIUM PROVINCE, NT ASX:DEV 8 AGE Tenement Acquisition The acquisition price is $7.5 million of which $1.75 million will be held in escrow pending renewal of the exploration access agreement relating to EL’s 24921 and 24922, which is due to expire in May 2027. The Company can elect to settle $2 million of the cash component of the acquisition in Company shares. There is a $100,000 deposit payable on execution, with the remainder of the consideration payable at completion, including the $1.75 million into a third party escrow account. Under the terms of the agreement, DevEx will acquire AGE’s shares in subsidiary companies, TCC Project Pty Ltd and Northern Prospector Pty Ltd as well as certain tenements directly from AGE as follows: Table 3: Tenements Acquired Licence Number Tenement Name Ownership Interest Status EL24921 Tin Camp Creek TCC Project P/L 100 Granted EL24922 Tin Camp Creek TCC Project P/L 100 Granted EL25002 Tin Camp Creek TCC Project P/L 100 Granted EL24291 Beatrice Alligator Energy Ltd 100 Granted EL26796 Beatrice Alligator Energy Ltd 100 Granted EL26793, EL26794, EL26795 Beatrice Alligator Energy Ltd 100 Applications EL27252 Nabarlek North Northern Prospector P/L 100 Granted EL27253 Nabarlek North Northern Prospector P/L 100 Granted EL28389 Nabarlek North Northern Prospector P/L 100 Granted EL28390 Nabarlek North Northern Prospector P/L 100 Granted EL29991 Nabarlek North Northern Prospector P/L 100 Granted EL29992 Nabarlek North Northern Prospector P/L 100 Granted EL29993 Nabarlek North Northern Prospector P/L 100 Granted EL31480 Nabarlek North Northern Prospector P/L 100 Granted EL27777, EL27778, EL28176, EL28293, EL28315, EL 28863, EL 28864, EL 28865, EL28950, EL32075, EL32389, EL32390, EL32391 Various Northern Prospector P/L 100 Applications Notes: o Exploration Agreements for EL’s 24291 and EL26796, EL24921 and EL24922, and EL25002 with the Northern Land Council set out future benefits for traditional owners including future production royalties; o Exploration Agreements for EL27252, 27253, 28389, 28390, 29991, 29992, 29993 and 31480 with the Northern Land Council set out future benefits for traditional owners including future production royalties. The traditional owners also have a right to take an interest in the mineral lease under certain circumstances; o Cameco retains a claw-back to a 40% interest to the tenements comprising the Beatrice Project (EL’s 24291 and 26796 and ELA’s 26793, 26794, 26795) for a 15 year period commencing from 19 April 2018 if within that time a 100Mlb resource as defined in compliance with the JORC code; o Traditional owners have a right to take up a joint venture interest in EL’s 24921 and 24922; and o The Tin Camp Creek Tenements (EL’s 24921, 24922 and 25002) are subject to a 1% royalty on gross proceeds from sale of uranium and other refined substances. DEVEX TO ACQUIRE ALLIGATOR ENERGY’S ENTIRE TENURE PACKAGE IN THE WORLD-CLASS ALLIGATOR RIVERS URANIUM PROVINCE, NT ASX:DEV 9 Next Steps • Finalise the transfer of the AGE Tenements. • Undertake ground-based investigation targeting several fault-hosted uranium anomalies identified in the government airborne radiometric surveys. • Review and reassess the Caramal Inferred MRE to meet JORC Code 2012 guidelines. • Build priority drill targets into DevEx’s exploration plans for next year. This announcement has been authorised for release by the Board. For further information, please contact: Marnie Finlayson Managing Director DevEx Resources Limited Telephone: +61 8 6186 9490 Email: info@devexresources.com.au For media enquiries, please contact: Nicholas Read Read Corporate Telephone: +61 8 9388 1474 info@readcorporate.com.au Follow us LinkedIn devex-resources X: @DevExResources COMPETENT PERSON STATEMENT The information in this report which relates to previous Exploration Results for the Nabarlek Project is extracted from the ASX announcements titled: “DevEx ramps-up exploration at Nabarlek Uranium Project, NT after identifying new high-grade targets” released on 29 September 2021 which is available at www.devexresources.com.au. The Company confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement. FORWARD LOOKING STATEMENT This announcement contains forward-looking statements which involve a number of risks and uncertainties. These forward- looking statements are expressed in good faith and believed to have a reasonable basis. These statements reflect current expectations, intentions or strategies regarding the future and assumptions based on currently available information. Should one or more of the risks or uncertainties materialise, or should underlying assumptions prove incorrect, actual results may vary from the expectations, intentions and strategies described in this announcement. No obligation is assumed to update forward looking statements if these beliefs, opinions and estimates should change or to reflect other future developments. REPORT REFERENCES *1 Production History: McKay, A.D & Miezitis, Y. 2001. Australia’s uranium resources, geology and development of deposits. AGSO – Geoscience Australia, Mineral Resource Report. ERA Annual Production Reports 2001 to 2018. Energy Resources of Australia Limited – Annual Statement of Reserves and Resources – January 2018 Deep Yellow Limited Mineral Resource Estimate Update for Angularli – 3 July 2023. Laramide Resources Limited, Updated Mineral Resource Estimate and NI 43-101 Technical Report for Laramide’s Westmoreland Uranium Project, Queensland Australia (27 August 2025). FIGURE REFERENCES Figure 1 1. Production History: McKay, A.D & Miezitis, Y. 2001. Australia’s uranium resources, geology and development of deposits. AGSO – Geoscience Australia, Mineral Resource Report. ERA Annual Production Reports 2001 to 2018. 2. Mineral Resource: Deep Yellow Limited Mineral Resource Estimate Update for Angularli – 3 July 2023. Energy Resources of Australia Limited – Annual Statement of Reserves and Resources – January 2018. 3. Alligator Energy Limited’s Caramel Inferred MRE - Refer 1 – Cautionary Statement