NANO Nuclear Energy and IMPSA Sign Master Services Agreement to Advance Engineering and Fabrication of Critical KRONOS MMR™ Components

(NASDAQ:NNE) NANO Nuclear Energy Inc. announced it has entered into an Engineering Services Master Agreement (ESMA) with the U.S. subsidiary of IMPSA, a leading Argentine engineering and heavy-manufacturing company. The three-year ESMA provides a framework for IMPSA to support the engineering, design-for-manufacture, and potential future fabrication of critical components for NANO Nuclear’s KRONOS MMR™ Energy System. The agreement leverages IMPSA's expertise in nuclear pressure vessels, ASME Section III manufacturing, welding, non-destructive examination, quality assurance, and heavy-component fabrication as the KRONOS MMR™ design advances toward manufacturing readiness. The reactor pressure vessel is specifically identified as a principal reactor-component under evaluation by IMPSA, with additional collaboration areas including reactor cavity cooling systems, spent-fuel storage systems, and other reactor and transportation components. The initial KRONOS MMR™ Engineering and Manufacturability Program under the ESMA will begin with a dedicated Design Review and Assessment – Engineering Consulting and Manufacturability Feasibility Study, estimated to last six months and supported by a retainer. IMPSA's work will include an independent review of KRONOS MMR™ components against ASME Boiler and Pressure Vessel Code Section III requirements and the application of its prior experience in engineering and fabricating nuclear pressure vessels and other nuclear components. The program aims to incorporate manufacturing expertise into the KRONOS MMR™ design process at an early stage to identify potential fabrication constraints, inspection limitations, accessibility issues, supply-chain risks, and design improvements. As required by NANO, the work may also extend to detailed engineering and fabrication drawings, code-compliant calculations, 3D models, and other engineering deliverables. The ESMA is non-exclusive and describes IMPSA as one of the few companies in Latin America certified with ASME N and ASME III N stamps, providing capabilities for the engineering and construction of Class 1 heavy nuclear components. Future component fabrication, regional projects, or other commercial activities beyond the initial engineering services will remain subject to the results of the engineering work, regulatory requirements, and, where required, additional work orders or definitive agreements. IMPSA has more than 115 years of experience and over 40 years of active participation in the Argentine nuclear industry, including the construction, refurbishment, and modernization of nuclear facilities and the development and manufacturing of small modular reactors (SMRs). NANO Nuclear Energy Inc. is a North American advanced technology-driven nuclear energy company developing microreactors, nuclear fuel supply chain, nuclear fuel transportation, nuclear applications for space, and nuclear industry consulting services. Its reactor products in development include the KRONOS MMR™ Energy System, ZEUS portable solid core battery reactor, and LOKI MMR™ for space applications. Advanced Fuel Transportation Inc. (AFT), a NANO Nuclear subsidiary, is the exclusive licensee of a patented high-capacity HALEU fuel transportation basket developed by three major U.S. national nuclear laboratories and funded by the Department of Energy. HALEU Energy Fuel Inc. (HEF), another subsidiary, is focusing on developing a domestic source for a High-Assay, Low-Enriched Uranium (HALEU) fuel fabrication pipeline. NANO Nuclear Space Inc. (NNS), also a subsidiary, is exploring commercial applications of micronuclear reactor technology in space, with an initial focus on cis-lunar applications.

NANO Nuclear Energy and IMPSA Sign Master Services Agreement to Advance Engineering and Fabrication of Critical KRONOS MMR Components

(NASDAQ:NNE) NANO Nuclear Energy Inc. announced it has entered into an Engineering Services Master Agreement (ESMA) with the U.S. subsidiary of IMPSA, a leading engineering and heavy-manufacturing company from Argentina. The three-year ESMA establishes a framework for IMPSA to support the engineering, design-for-manufacture, and potential future fabrication of critical components for NANO Nuclear's KRONOS MMR™ Energy System. The agreement specifically identifies the reactor pressure vessel as a principal reactor-component under evaluation by IMPSA, and also lists reactor cavity cooling systems, spent-fuel storage systems, and other reactor and transportation components as additional areas for potential collaboration. The initial KRONOS MMR™ Engineering and Manufacturability Program under the ESMA will begin with a dedicated Design Review and Assessment - Engineering Consulting and Manufacturability Feasibility Study, estimated to last six months and supported by a retainer. IMPSA's work will include an independent review of KRONOS MMR™ components against ASME Boiler and Pressure Vessel Code Section III requirements, leveraging IMPSA's experience in engineering and fabricating nuclear pressure vessels and other nuclear components. The program aims to incorporate manufacturing expertise into the KRONOS MMR™ design process at an early stage to identify potential fabrication constraints, inspection limitations, accessibility issues, supply-chain risks, and design improvements before manufacturing. The work may also extend to detailed engineering and fabrication drawings, code-compliant calculations, 3D models, and other engineering deliverables as required by NANO. The ESMA is non-exclusive and describes IMPSA as one of the few companies in Latin America certified with ASME N and ASME III N stamps, enabling engineering and construction of Class 1 heavy nuclear components. Future component fabrication, regional projects, or other commercial activities beyond the initial engineering services will depend on the results of the engineering work, regulatory requirements, and further agreements. Jay Yu, Founder and Chairman of NANO Nuclear Energy, stated that the relationship with IMPSA can strengthen several areas of NANO Nuclear's business and establish an important industrial relationship between the United States and Argentina. James Walker, Chief Executive Officer of NANO Nuclear Energy, highlighted IMPSA's more than four decades of nuclear engineering and manufacturing experience, especially in nuclear pressure vessels and ASME Section III fabrication. Jorge Salcedo Hernández, President of IMPSA, described the alliance as a strategic opportunity for IMPSA and the Argentine nuclear industry, aiming to accelerate the KRONOS MMR™ manufacturing process. IMPSA has over 115 years of experience and more than 40 years of active participation in the Argentine nuclear industry, including the construction, refurbishment, and modernization of nuclear facilities and the development and manufacturing of small modular reactors (SMRs). NANO Nuclear Energy Inc. is developing several reactor products, including the KRONOS MMR™ Energy System, ZEUS, and LOKI MMR™, and is engaged in construction permit pre-application engagement with the U.S. Nuclear Regulatory Commission in collaboration with the University of Illinois Urbana-Champaign. Advanced Fuel Transportation Inc. (AFT), a NANO Nuclear subsidiary, acquired Secured Transportation Services (STS) in May 2026 and is the exclusive licensee of a patented high-capacity HALEU fuel transportation basket developed by three major U.S. national nuclear laboratories and funded by the Department of Energy. HALEU Energy Fuel Inc. (HEF), another subsidiary, is focusing on developing a domestic source for High-Assay, Low-Enriched Uranium (HALEU) fuel fabrication. NANO Nuclear Space Inc. (NNS), also a subsidiary, is exploring commercial applications of micronuclear reactor technology in space, with an initial focus on cis-lunar applications.

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