Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced it was selected for the U.S. Department of Energy’s ARPA-E SCALEUP Ready program, supporting the commercial deployment of its Universal Canister System (UCS) for integrated nuclear waste management. SCALEUP Ready is ARPA-E’s latest initiative to accelerate technologies toward market adoption and committed up to $40 million to support two projects, including the Deep Isolation project.

Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced that it will exhibit its full-size Universal Canister System (UCS) prototype at Booth 401 during the 2026 ARPA E Energy Innovation Summit in San Diego, California, April 7-9. The Company will also participate in a technology demonstration showcase on Tuesday, April 7, highlighting how the UCS supports safe, scalable, and flexible disposal of spent nuclear fuel from advanced reactors.

Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced the successful completion of its work under the Advanced Research Projects Agency–Energy (ARPA E) Optimizing Nuclear Waste and Advanced Reactor Disposal Systems (ONWARDS) project titled “Enabling the Near Term Commercialization of an Electrorefining Facility to Close the Metal Fuel Cycle.” The project, led by Oklo Inc. (NYSE: OKLO), aimed to enhance key technologies supporting the recycling of used nuclear fuel through electrorefining.

Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, will share insights on the deployment readiness of its Universal Canister System and the global advancement of deep borehole disposal technology at the 52nd Annual Waste Management Symposia (WM2026).

Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced the appointment of Matthew Sunseri to its Advisory Board as the Company advances its deep borehole demonstration program. Mr. Sunseri brings deep expertise in nuclear safety, regulatory engagement, organizational performance, and enterprise risk management to advanced nuclear and waste management initiatives.

Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced the appointment of Joseph Nelson as Chief Financial Officer. Mr. Nelson brings over two decades of financial leadership, including raising billions in financing, executing multiple M&A transactions, and driving corporate growth in the energy sector, further strengthening Deep Isolation’s executive leadership as it advances toward commercialization.

Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced the appointment of Paula Whitten-Doolin as the Company's General Counsel, effective immediately.

Deep Isolation Nuclear, Inc. (“Deep Isolation”), a leading innovator in nuclear waste disposal technology, today announced the launch of its multi-year, full-scale, at-depth deep borehole demonstration program (the “Demonstration Program”), in collaboration with the Deep Borehole Demonstration Center (“DBDC”), Halliburton (NYSE: HAL), Amentum (NYSE: AMTM), NAC International, and Occlusion Nuclear Solutions, to conduct testing of its deep borehole technology for safely and permanently disposing of nuclear waste.

Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced the appointment of Ralph L. Hunter to the Company’s Board of Directors, effective immediately.

Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced the successful completion of Project SAVANT (Sequential Advancement of Technology for Deep Borehole Disposal), a two-year research initiative funded by the U.S. Department of Energy Advanced Research Projects Agency–Energy (ARPA-E). The project found that Deep Isolation’s Universal Canister System (UCS) and borehole casing materials can sufficiently resist corrosion to safely store nuclear waste material, further validating the design and advancing the Company toward a full-scale deep borehole disposal demonstration.