Announcement PDF ASX RELEASE | 13 August 2026 | ASX:C1X Strategic agreement executed with VULTEC Engage with this announcement at http://www.eaulithium.com Key highlights: • Strategic partnership: Agreement executed between EAU Lithium and VULTEC (Vulcan Energy Resources Limited’s German technology subsidiary) • Comprehensive scope: MSA covers engineering feasibility studies, geothermal power integration studies, DLE process optimisations, by-product opportunities (Mg, K) and future plant operations and training support, as well as pilot plant mobilisation, installation, transport and commissioning, and market development and offtake support. • German technology: Agreement formalises access to the team and expertise behind the world-class VULSORB technology and VULTEC’s broader engineering support in Germany, with VULTEC responsible for technology provision, process design, sorbent supply, and A-DLE system performance. • Advanced technology: Leverages the German VULTEC team supporting the roll-out of VULSORB® A-DLE closed-loop technology to process complex brines with a minimal environmental footprint (consistent with the licence agreement already signed between Vulcan Energie Ressourcen GmbH and EAU Lithium). • Collaboration: The MSA is additionally designed to encourage collaboration and transparency as part of its philosophical foundation for technical collaboration, as well as commitments to align with any environmental protection and community consultation requirements. Chairman, James Durrant, comments: "We're pleased to formalise this partnership with VULTEC, the German subsidiary of Vulcan Energy Resources Limited, having worked closely with them over an extended period to reach this point. VULTEC is backed by a world-renowned team of experts in chemistry, engineering and geology, and their VULSORB® technology underpins one of Europe's most advanced lithium extraction projects. Their deep technical expertise and proven track record make them an outstanding partner, and this agreement gives us a strong operational foundation as we continue advancing our strategy." ASX RELEASE | 13 August 2026 | ASX:C1X Cosmos Exploration Limited (ASX: C1X) (“Cosmos” or “the Company”) is pleased to report that its subsidiary, EAU Lithium Pty Ltd, has executed the second of two critical Master Services Agreements (MSAs). These contracts together secure any future engineering and technical services required to advance its lithium aspirations in Bolivia. This strategic agreement has been signed with VULTEC GmbH (the German technology subsidiary of Vulcan Energy Resources Limited (ASX:VUL)) (VULTEC) and follows the signing of an MSA with CONSTRUCCIONES SEPCON S.R.L. (one of Bolivia’s leading Engineering, Procurement and Construction Management (EPCM) firms) (SEPCON). Advancing the strategy The two MSAs give the Company a full operational suite. VULTEC will oversee technology integration, including optimisation testing of synthesised brine samples at its active German facility, geothermal studies and broader, technology support - in keeping with the technology licencing agreement already in place – as well as future operational support. Concurrently, SEPCON will be ready to provide multidisciplinary engineering, field logistics, and construction services within Bolivia. Disclaimer The activities described in this announcement, including but not limited to the SEPCON and VULTEC partnership arrangements, are technical, engineering, operational or commercial activities undertaken independently by EAU Lithium to support its evaluation of potential future development opportunities in Bolivia. These activities do not represent or imply the granting of any rights, approvals, concessions or interests by any Bolivian government authority, nor do they constitute an industrialisation agreement or other definitive agreement. About Vulcan Energy VulcanEnergy(ASX: VUL, FSE: VUL)is buildingthe world’s first integrated carbon neutral lithium and renewable energy business to decarbonise battery production. Located in the Upper Rhine Valley Brine Field between Germany and France, Vulcan’s Lionheart Project (Lionheart) is alighthouse projectforEurope’s energyand criticalraw material resilience. Lithiumis tobe extractedfrom lowimpurity geothermalsubsurface brines usingVulcan’s industry-leading VULSORB® technology. Naturally heated, the brine powers production and conversion of lithium to battery-quality material by creating a renewable energy co- product for use in operations, with surplus sold into the local energy market. This integration, technology and favourable brine chemistry collectively enables one of the lowest cost lithium operations globally. ASX RELEASE | 13 August 2026 | ASX:C1X Extraction is only the starting point for Vulcan. The Company has reimagined mining using innovation to integrate and capture more of the value chain. The Company has made its positive Final Investment Decision on Lionheart, construction is underway, offtake contracted and further phases of production are in planning. VULTEC as a technology subsidiary of Vulcan Energie Ressources GmbH was created to: 1. Develop technologies and materials in the field of direct lithium extraction sfrom lithium-containing aqueous solutions using extraction agents. 2. Provide technical services based on these technologies and materials, and the fee-based provision of these technologies and materials to cooperation partners, customers, and licensees. 3. Develop and advance intellectual property rights based on the technologies and materials. For more information, please go to www.v-er.eu About EAU Lithium EAU Lithium, in strategic partnership with Vulcan Energy Resources and with a VULSORB® technology licence, are preparing to support the Bolivian state, via Yacimientos de Litio Bolivianos (YLB), in developing future lithium production. Bolivia holds a significant portion of the world’s lithium reserves in high altitude – complex chemistry, brine lakes with social and environmental sensitivity. EAU Lithium, with Vulcan’s VULSORB® A-DLE technology have the processing expertise to unlock the value of these deposits for all stakeholders whilst ensuring a minimal water and environmental footprint though a fully closed loop circuit. Cosmos merged with EAU Lithium in May 2026, bringing EAU Lithium’s executive team into the newly merged company. This announcement has been authorised by the Board of Cosmos Exploration Limited. Engage with the company via the EAU Lithium Investor Hub. For further information please contact: Australia and Bolivia Germany and Europe Jacinta Martino Investor Relations Matthew Reynolds Investor Relations Jacinta.martino@eaulithium.com investors@eaulithium.com ASX RELEASE | 13 August 2026 | ASX:C1X Disclaimer: No representation or warranty, express or implied, is made by Cosmos that the material contained in this announcement will be achieved or proved correct. Except for statutory liability which cannot be excluded, each of Cosmos, its directors, officers, employees, advisors and agents expressly disclaims any responsibility for the accuracy, fairness, sufficiency or completeness of the material contained in this announcement and excludes all liability whatsoever (including in negligence) for any loss or damage which may be suffered by any person as a consequence of any information in this announcement or any effort or omission therefrom. Cosmos will not update or keep current the information contained in this announcement or to correct any inaccuracy or omission which may become apparent, or to furnish any person with any further information. Any opinions expressed in the announcement are subject to change without notice. Not offer of securities: This announcement has been prepared for publication in Australia and may not be released to US wire services or distributed in the United States. The distribution of this announcementinjurisdictions outside Australia may be restricted by law and you should observe any such restrictions. Any failure to comply with such restrictions may constitute a violation of applicable securities law. This announcement does not constitute an offer to sell, or a solicitation of an offer to buy, securities in the United States or any other jurisdiction. Any securities described in this announcement have not been, and will not be, registered under the US Securities Act and may not be offered or sold in the United States except in transactions exempt from, or not subject to, the registration requirements of the US Securities Act and applicable US state securities laws.