<img src="https://ml.globenewswire.com/Resource/Download/466f2ed4-4546-4da9-a340-7a896a7627f8?size=2" nborder="0" align="left" hspace="5" vspace="5" title="DI_Logo_Horizontal_Color (1).png" alt="Deep Isolation"/>Deep Isolation Stands Ready to Support States in Developing a Comprehensive, End-to-end Nuclear Fuel Cycle StrategyBERKELEY, Calif., July 28, 2026 (GLOBE NEWSWIRE) -- Deep Isolation Nuclear, Inc. (<a href="https://www.globenewswire.com/Tracker?data=Kx4T6Z4uawNdSP-UfylJidJ0o9J09wkKqX9lR89rjMR7EzcsJNpgkIJ2Vj_RqvlKaIIvcgSlPVzd3Rbwu1Ynvd-USZbv_H4AEn-Iy68946mblMWNiRbfnvuwCiCe0BHS" rel="nofollow" target="_blank" title="">OTCQB: DBHL</a>) (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today welcomed the U.S. <a href="https://www.globenewswire.com/Tracker?data=bt22vKnesZoBG9XziK1K6i84udG_zMwQ61t-E_6Sisy_Jwq30F5e220j2kfNf-9f0aM-VLFa94mK9w6ptTsf8piWHSyriTOJKpxdRBC16Q2bozIPiPc1h1DPlm-xrr5qG0kG7obPABLNJfXuLEpjCXzndGW64QclESexmpgPi3mLTl62DcUbV5q0ShLaN6jY0DXA0q2rdJgk9fqPxkO82Q==" rel="nofollow" target="_blank" title="Department of Energy’s (DOE) announcement">Department of Energy’s (DOE) announcement</a> advancing the Nuclear Lifecycle Innovation Campus initiative, a new effort to modernize the nation’s nuclear fuel cycle, strengthen domestic energy security and support the continued development of advanced nuclear energy.   Through the Innovation Campus initiative, DOE is establishing voluntary State-Federal partnerships with states interested in exploring the potential development of regional campuses supporting activities across the nuclear fuel lifecycle, including ultimate disposition of used nuclear fuel. “The Nuclear Lifecycle Innovation Campus initiative is a game-changing opportunity to secure America’s nuclear energy future,” said Rod Baltzer, President and Chief Executive Officer of Deep Isolation. “As new reactors are deployed and domestic nuclear capabilities expand, it is imperative to also deliver safe, secure and permanent disposal of used nuclear fuel and other radioactive waste – and the Campus initiative rightly establishes that stewardship as the centerpiece of these vital new State-Federal partnerships.” Deep Isolation stands ready to work with DOE, state governments, local communities, industry partners and other stakeholders as states evaluate the opportunity to host Nuclear Lifecycle Innovation Campuses. The Company’s patented deep borehole disposal technology is particularly well suited to the campus model due to its modularity, scalability and adaptability to a very wide range of geologic settings. It supports disposal of used nuclear fuel from the United States’ legacy fleet of light water reactors, from advanced reactor designs, and also of the highly radioactive residues that remain after recycling of the used nuclear fuel. Disposal capacity can be developed in phases as needed, allowing states to incorporate a permanent waste solution into their broader nuclear development plans from the outset. Deep Isolation’s technical, regulatory and stakeholder engagement expertise can also help states evaluate their options and integrate responsible waste management and disposal planning into the earliest stages of campus development. “Communities and states considering a role in the future nuclear fuel cycle should have confidence that the backend can be addressed safely and responsibly,” Baltzer added. “Deep Isolation looks forward to supporting all interested states as they create economic opportunity, strengthen national energy security and ensure that nuclear waste is managed safely for generations to come.” About Nuclear Lifecycle Innovation Campuses <a href="https://www.globenewswire.com/Tracker?data=zF-x2GRyLoSDfpts7MxxgS_P-pgfJ-fp8vOIUmEO3CaAmKk8qqJd_09vszCoI8i-F_zf7M23gHmdqvORdlb22oDlPyAApJi3eCOZ6aWONJl3TjiYyxqIOLYze5cQlPxNK9jIvW8H6Yu6js-AKNSVIYw7PJ7QceXATDZz3n43g4w=" rel="nofollow" target="_blank" title="Nuclear Lifecycle Innovation Campuses">Nuclear Lifecycle Innovation Campuses</a> are a new effort to modernize the nation’s full nuclear fuel cycle by co-locating functions such as fuel fabrication, enrichment, reprocessing used nuclear fuel, and disposition of waste. Innovation Campuses will be established through voluntary federal-state partnerships designed to advance manufacturing and regional economic growth, enhance national energy security and build a coherent end-to-end nuclear strategy for the country. About Deep Isolation Deep Isolation (<a href="https://www.globenewswire.com/Tracker?data=Kx4T6Z4uawNdSP-UfylJiRTxo3G1LF_fsP0IJu7gYTMogCHFcF7Oxi8fHn8sGey4c86ce7GLWc6WFWcAe41wOwmSZ76imlW7qChUUSFASm4sIM-KZASq0gU5ow1NIwpO" rel="nofollow" target="_blank" title="">OTCQB: DBHL</a>) is the first company to undertake development of technologies for nuclear waste disposal in deep boreholes. When commercialized, Deep Isolation’s solution will offer a unique approach to help countries identify, plan for and complete the necessary steps to dispose of their nuclear waste inventories. With over 100 patents issued to date, Deep Isolation’s technology is being designed to leverage proven drilling practices to allow safe isolation of waste deep underground in horizontal, vertical, or slanted borehole repositories. Deep Isolation’s Universal Canister System was developed through a three-year project funded by the U.S. Department of Energy’s Advanced Research Projects Agency–Energy and is engineered to support integrated management of spent fuel and high-level radioactive waste from legacy and advanced reactors across storage, transportation, and eventual disposal. In January 2026, Deep Isolation launched a full-scale, at-depth deep borehole Commercialization Pilot for its solution at Cameron, Texas, in collaboration with the Deep Borehole Demonstration Center, Halliburton (NYSE: HAL), Amentum (NYSE: AMTM), NAC International, and Occlusion Nuclear Solutions. For more information, visit: <a href="https://www.globenewswire.com/Tracker?data=3JfKJZIOwZ5jTOMRMtsZ3pOllIwQAsrmMA-CKQEB3tWOiTm1pV1I9ruHQuPcm1h0S2GjqUGGnsksOErSgrVMknOpK9wGKZl8xtPqnwBfD8D35V4qtdbj48KSWwYQdqIJ" rel="nofollow" target="_blank" title="">https://www.deepisolation.com</a> Media Contact: Sophie McCallum <a href="https://www.globenewswire.com/Tracker?data=rq6OxVnqku9QTBzZ7k4BZyvY-TpkwCaqFxA1fVLY0GOE8ot9v2Sk6PLFQKIYuhgKaQLStXCpbSlORz1ba_Ofd05z4YO40FCUP9p8OQKa-8NX1ZejBBmMMQA0x508yMYg" rel="nofollow" target="_blank" title="media@deepisolation.com">media@deepisolation.com</a> Investor Contact: Caldwell Bailey <a href="https://www.globenewswire.com/Tracker?data=UN7Y7YPynJsr6Q5BZ0POngEunEMtUe07jWo1nEg78YIsAg60TfZ54lYO5Blj_HHrqnD6nqNHWV5hXXF3_K5DBW59a4AV3JrGHpyI0xwJM2pjIQItTTXPXBoUPlnDtjTHbvw5T8OU8msD_dWqHgwQQA==" rel="nofollow" target="_blank" title="InvestorRelations@deepisolation.com">InvestorRelations@deepisolation.com</a> Forward-Looking Statements Statements contained in this news release that are not historical facts are “forward-looking information” or “forward-looking statements” (collectively, “forward-looking statements”) within the meaning of Section 27A of the Securities Act and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements include, but are not limited to, statements regarding our plans, objectives and expectations for our business, the future growth of our business and the nuclear energy and nuclear waste disposal industries as a whole, and future benefits expected to arise from our strategic partnerships. In certain cases, forward-looking statements can be identified by the use of words and phrases or variations of words and phrases or statements such as “may,” “should,” “expect,” “intend,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “will,” “could,” “project,” “target,” “potential,” “continue” and similar expressions. Forward-looking statements are based on management’s belief and assumptions, including current expectations and projections about future events and trends, and on information currently available to management. Forward-looking statements in this or any other news release are subject to a number of risks, uncertainties, and assumptions that could cause actual results to be materially different from those expressed or implied by such forward-looking statements. Such risks, uncertainties, and assumptions are subject to a number of factors, including, among others: the failure of a market to develop for our deep borehole disposal solutions as quickly as we expect or at all; a failure of demand for our solution to develop sufficiently; regulatory and legal developments, including issues relating to obtaining regulatory approvals or permissions on the timelines we expect or at all; our lack of profitability; delays or failure in our initiative to complete a full-scale, at-depth demonstration of our Universal Canister System and our deep borehole solution; our failure to enter into contracts with customers or, once we do enter into contracts, to continue such contractual relationships or to receive new contract awards; our dependency on governmental contracts and awards and our ability to finalize negotiations on same; our failure to manage our growth effectively or to execute our business plan; our failure to sustain and expand relationships with governmental entities and strategic partners; a failure in the assumptions or analyses we have used in supporting forecasts or plans; our inability to commercialize our products at scale; the development or deployment of other technologies or solutions supplanting or competing with our technologies; challenges to our intellectual property; failures to protect, maintain, enforce, and enhance our intellectual property, and claims by others of intellectual property infringement; political and public perceptions of nuclear energy, including perceptions as to accidents or other high-profile events involving nuclear power facilities or radioactive materials; our liquidity and ability to raise capital; any inability to control operating and project costs and project delays or other project-related problems; security (including cybersecurity) breaches or disruptions; geopolitical, macroeconomic, domestic events or crises, including supply chain disruptions and other risks and uncertainties outside of our control; weather and effects of climate change; and litigation or legal proceedings that may be brought against us. The foregoing is not an exhaustive list of all the factors that may cause any forward-looking statements to prove inaccurate or our actual results to differ materially from our expectations and forecasts. Moreover, we operate in a highly regulated environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties, and assumptions, the future events and trends discussed in this release may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements, and we cannot guarantee future results, performance, or achievements. Accordingly, readers should not place undue reliance on forward-looking statements. We undertake no obligation to update any forward-looking statements for any reason after the date of this release or to conform these statements to actual results or revised expectations, except as required by law. Additional information concerning the factors above and other factors will be found in the Company’s public filings with the Securities and Exchange Commission (the “SEC”), including the sections titled “Forward-Looking Statements” and “Risk Factors” in the Company’s Reports on Form 10-K and 10-Q for the fiscal year ended December 31, 2025 and the quarter ending March 31, 2026, respectively, as filed with the SEC on March 30, 2026, our Form S-1, originally filed August 18, 2025 and subsequently amended, our Proxy Statement for our 2026 Annual Meeting as filed on April 29, 2026, and in filings with the SEC that will be made in the future. The Company’s SEC filings are available free of charge at www.sec.gov or upon written request to Deep Isolation at InvestorRelations@deepisolation.com or CorpSec@deepisolation.com. <img alt="" src='https://ml.globenewswire.com/media/ZjQ0NjY5NWMtYjcxMS00MzY1LTgwMmMtZWEyZTBhYmJlMGIyLTEzMTM1ODEtMjAyNi0wNy0yOC1lbg==/tiny/Deep-Isolation.png' referrerpolicy='no-referrer-when-downgrade' />

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Deep Isolation Welcomes DOE Nuclear Lifecycle Innovation Campus Initiative

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