Slovenia’s national radioactive waste management agency highlights the potential cost and operational benefits of Deep Isolation’s disposal approach

PLANO, TX – Deep Isolation Nuclear, Inc. (OTCQB: DBHL) (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced the publication of a new customer case study featuring Slovenia’s Agency for Radioactive Waste Management (ARAO). The case study highlights Deep Isolation’s work supporting Slovenia’s long-term nuclear waste disposal planning and features customer insights into the potential economic and operational benefits of its deep borehole disposal technology.

The case study showcases Deep Isolation’s engagement with ARAO to evaluate disposal options for spent nuclear fuel from Slovenia’s TRIGA II research reactor. The collaboration builds on previous assessments conducted by Deep Isolation and reflects growing international interest in flexible, cost-effective approaches to managing nuclear waste inventories.

“The nuclear waste disposal options study gave us a clear comparison of disposal pathways for TRIGA II spent nuclear fuel. It showed that integrating a small inventory into a repository for the Krško SNF can be done with minimal additional cost, without introducing significant safety or scheduling impacts,” said Sandi Viršek, CEO of ARAO.

Deep Isolation’s featured assessment evaluated the potential to integrate TRIGA II spent fuel into a proposed deep borehole repository for Slovenia’s Krško Nuclear Power Plant, compared with developing a dedicated standalone facility. The analysis found that integrating the smaller inventory could potentially increase total repository lifecycle costs by less than approximately 0.5%, highlighting the potential economic advantages of shared disposal infrastructure.

“This case study illustrates how our technology and technical expertise can support countries as they evaluate practical, economically viable pathways for the long-term management of spent nuclear fuel,” said Chris Parker, Chief Commercialization Officer at Deep Isolation. “We look forward to building on this engagement and supporting other national programs facing similar challenges.”

Read the customer case study.

About Deep Isolation

Deep Isolation (OTCQB: DBHL) is the first company to undertake development of technologies for nuclear waste disposal in deep boreholes. 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 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 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 (TYO: 7004), and Occlusion Nuclear Solutions.

For more information, visit: deepisolation.com. 

###

Media Contact:
Sophie McCallum
media@deepisolation.com

Investor Contact:
Caldwell Bailey
InvestorRelations@deepisolation.com

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.

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PLANO, TX – Deep Isolation Nuclear, Inc. (OTCQB: DBHL) (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced that CEO Rod Baltzer and CFO Joe Nelson will present at three upcoming investor conferences, offering investors opportunities to learn more about the Company’s technology, commercialization strategy and progress toward deploying deep borehole disposal for nuclear waste.

On Oct. 8 at 11.30 am ET, Baltzer and Nelson will participate in the Small Cap Growth Virtual Conference by OTC Markets, an online investor event designed to connect publicly traded companies directly with individual and institutional investors, advisers and analysts. The live, interactive format will provide investors an opportunity to hear from Company leadership and submit questions in real time. Baltzer and Nelson will also be available for 1×1 meetings with investors and analysts. Link to the conference: Registration.

On Oct. 14 at 3:30 pm ET, Deep Isolation will present at the Precious Metals & Critical Minerals Virtual Conference, also hosted by OTC Markets. Baltzer and Nelson will discuss Deep Isolation’s approach to nuclear waste disposal and the Company’s role in supporting the infrastructure needed for the continued development and deployment of nuclear energy. Investors attending virtually will have an opportunity to hear the presentation and engage with Company leadership in 1×1 meetings. Link to the conference: Registration.

On Oct. 15, Baltzer and Nelson will present in person at the ThinkEquity Conference 2026 in New York, where Deep Isolation plans to engage with investors and discuss the Company’s commercialization activities, technology portfolio and opportunities arising from growing investment in nuclear energy and its supporting infrastructure.

“These conferences provide important opportunities to engage directly with the investment community as Deep Isolation advances toward commercialization,” said Baltzer. “We are looking forward to sharing our progress, discussing the growing need for practical nuclear waste disposal solutions and outlining how we are working to make deep borehole disposal an important part of the nuclear industry’s future.”

About Deep Isolation

Deep Isolation (OTCQB: DBHL) is the first company to undertake development of technologies for nuclear waste disposal in deep boreholes. 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 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 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 (TYO: 7004), and Occlusion Nuclear Solutions.

For more information, visit: deepisolation.com. 

###

Media Contact:
Sophie McCallum
media@deepisolation.com

Investor Contact:
Caldwell Bailey
InvestorRelations@deepisolation.com

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.

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Regulatory Authorization Supports Deep Isolation’s Plans to Move Its Full-Scale, Non-Radioactive Commercialization Pilot Toward Construction and Field Activities

BERKELEY, CA – Deep Isolation Nuclear, Inc. (OTCQB: DBHL) (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced that the Texas Railroad Commission has issued a drilling permit for the Company’s full-scale, non-radioactive Commercialization Pilot near Cameron, Texas. The regulatory authorization allows the project to advance from engineering and design toward construction and field activities at the demonstration site.

“Receipt of this permit is a major milestone for Deep Isolation as we move the development of our deep borehole disposal technology into field activities,” said Jesse Sloane, Executive Vice President of Engineering at Deep Isolation. “The Commercialization Pilot is designed to demonstrate, at full scale and at depth, the integrated technologies and operations that underpin our deep borehole disposal solution. Reaching this point reflects a tremendous amount of rigorous, high-quality work by our team and our project collaborators. We are incredibly excited to move into the construction and field work phase together with these collaborators and bring years of engineering and planning into the field.”

 “This milestone demonstrates the technical design, project preparation, and collaboration behind the Commercialization Pilot,” said Steve Haden, Senior Vice President, Project Management, at Halliburton. “As we drill a new well for this effort, Halliburton will apply its subsurface, drilling, and well construction experience to support the deployment of Deep Isolation’s technology in a new application and assist the project team.”

The Commercialization Pilot is designed as a full-scale, end-to-end demonstration of Deep Isolation’s deep borehole disposal technology using non-radioactive materials. The project aims to demonstrate key operational activities associated with the Company’s solution, providing field data and operational experience intended to support future commercial deployment.

The Texas project brings together Deep Isolation with the Deep Borehole Demonstration Center, Halliburton (NYSE: HAL), Amentum (NYSE: AMTM), NAC International (TYO: 7004), and Occlusion Nuclear Solutions. With the drilling permit issued, the project team plans to advance site and construction activities in preparation for subsequent drilling and subsurface testing.

The drilling permit represents another step toward demonstrating how proven drilling practices can be adapted for deep borehole disposal of spent nuclear fuel and high-level radioactive waste. By demonstrating its system at full scale without radioactive material, Deep Isolation aims to generate practical engineering and operational experience that can inform future commercial projects.

About Deep Isolation

Deep Isolation (OTCQB: DBHL) 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 (TYO: 7004), and Occlusion Nuclear Solutions.

For more information, visit: deepisolation.com. 

###

Media Contact:
Sophie McCallum
media@deepisolation.com

Investor Contact:
Caldwell Bailey
InvestorRelations@deepisolation.com

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.

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DOE-funded study findings could help Nuclear Lifecycle Innovation Campuses evaluate integrated recycling and disposition strategies

BERKELEY, CA – Deep Isolation Nuclear, Inc. (OTCQB: DBHL) (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced results from a three-year U.S. Department of Energy-funded project showing that deep borehole disposal could provide a safe and cost-effective pathway for permanent disposal of waste generated by recycling used nuclear fuel.

Deep Isolation’s analysis performed as part of the project found that all disposal scenarios studied were projected to cost less than the program’s target of 0.1 cent per kilowatt-hour of electricity generated. Long-term safety analyses also found that all scenarios under expected conditions met the study’s safety performance criteria, with projected public radiation doses in most scenarios analyzed orders of magnitude below the 10 millirem-per-year regulatory benchmark used in the analysis. The results of the study could help address an important challenge facing the nuclear industry: how to safely and economically manage waste from future nuclear fuel recycling.

The research was conducted as part of the Department of Energy’s ARPA-E CURIE program in collaboration with Argonne National Laboratory, Oklo Inc. (NYSE: OKLO) and Case Western Reserve University. Deep Isolation developed the waste disposal component of the project, evaluating how waste from recycled nuclear fuel could be packaged and permanently isolated in deep boreholes.

“This project shows the value of designing recycling and disposal systems together rather than treating waste management as a downstream consideration,” said Jesse Sloane, Executive Vice President of Engineering at Deep Isolation. “Working alongside Argonne National Lab and Oklo, we developed a technically grounded disposal pathway that could support the economics of future fuel recycling while safely isolating the resulting waste. These findings give us another important building block toward an integrated and sustainable nuclear fuel cycle.”

Deep Isolation’s work focused on the full disposal pathway for waste produced through fuel recycling, from understanding the waste and how it would be packaged to designing a repository and evaluating its long-term safety and economics. The analysis considered Deep Isolation’s Universal Canister System (UCS) in both horizontal and vertical deep borehole configurations.

Oklo is developing an integrated fuel strategy for used fuel recycling, fuel fabrication, and power generation. It plans to recover usable fuel materials through pyroprocessing, fabricate that material into fuel, and use that fuel in its advanced fast reactors.

“Closing the fuel cycle is about unlocking the full value of used nuclear fuel — recovering its energy potential and extracting isotopes, while safely and permanently managing what remains,” said Ed Petit de Mange, Vice President of Fuel Recycling at Oklo. “This three-year study shows what’s possible when we design recycling and disposal together: an integrated approach that can meet rigorous safety standards while keeping disposal costs low. That’s the model we should work toward as we build the infrastructure for a more complete nuclear fuel cycle.”

Hosts of Nuclear Lifecycle Innovation Campuses, a new Department of Energy effort to strengthen and modernize the nation’s full nuclear fuel cycle, are exploring fuel recycling as a previously untapped energy resource.  Within each Innovation Campus, permanent disposal will remain an essential part of managing the resulting waste. The CURIE findings could help Deep Isolation, fuel-cycle companies and advanced reactor developers plan recycling and disposal together from the outset to meet a campus’ needs, supporting a more integrated approach to the future nuclear fuel cycle. 

“CURIE was structured to address several of the technical and economic challenges that need to be considered together as fuel recycling technologies advance,” said Krista Hawthorne, Section Manager, Pyroprocess Engineering, at Argonne National Laboratory. “By bringing together expertise in oxide reduction, process monitoring, fuel-cycle planning and waste disposal, this team has developed a more integrated understanding of how these systems could work together. Deep Isolation’s disposal work provides an important component of that broader fuel-cycle strategy.”

The CURIE project builds on Deep Isolation’s broader ARPA-E-funded work advancing integrated nuclear waste solutions, including the development of the UCS through Project UPWARDS under ARPA-E’s ONWARDS program. The triple-purpose UCS is designed to support storage, transportation and disposal of a range of advanced reactor and fuel-cycle waste streams.

About Deep Isolation

Deep Isolation (OTCQB: DBHL) 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 (TYO: 7004), and Occlusion Nuclear Solutions.

For more information, visit: deepisolation.com. 

###

Media Contact:
Sophie McCallum
media@deepisolation.com

Investor Contact:
Caldwell Bailey
InvestorRelations@deepisolation.com

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.

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Deep Isolation Stands Ready to Support States in Developing a Comprehensive, End-to-end Nuclear Fuel Cycle Strategy

BERKELEY, CA – Deep Isolation Nuclear, Inc. (OTCQB: DBHL) (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today welcomed the U.S. Department of Energy’s (DOE) announcement 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

Nuclear Lifecycle Innovation Campuses 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 (OTCQB: DBHL) 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: deepisolation.com. 

###

Media Contact:
Sophie McCallum
media@deepisolation.com

Investor Contact:
Caldwell Bailey
InvestorRelations@deepisolation.com

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.

### 

Deep Isolation Joins Lawrence Berkeley National Laboratory and the University of South Carolina on Three DOE Project GENESIS Awards to Accelerate AI-Enabled Repository Siting, Design, and Performance Analysis for Nuclear Waste Disposal

BERKELEY, CA – Deep Isolation Nuclear, Inc. (OTCQB: DBHL) (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced that it has been selected as the sole industrial partner on three competitive federal grants awarded through the U.S. Department of Energy’s (DOE) Project GENESIS program. Two initiatives are led by Lawrence Berkeley National Laboratory (LBNL) and one is led by the University of South Carolina (USC). Together, the projects aim to advance artificial intelligence-enabled repository site screening, design and performance analysis for nuclear waste disposal.

The two LBNL-led initiatives will bring together Deep Isolation’s industry and engineering expertise in deep borehole disposal and innovative Universal Canister System (UCS) design with LBNL’s capabilities in geoscience, digital modeling and AI-driven analysis. The USC-led initiative will pair Deep Isolation’s repository engineering, borehole data and fatal flaw screening expertise with USC’s capabilities in physics-informed artificial intelligence, uncertainty analysis and autonomous subsurface modeling to support faster, more data-driven site characterization.

The projects support DOE’s Genesis Mission to accelerate scientific discovery and energy innovation through artificial intelligence by advancing technologies with the potential to reduce the time, cost and uncertainty associated with siting, designing and evaluating repositories for the permanent disposal of spent nuclear fuel and high-level radioactive waste. Read DOE Press Release: Secretary of Energy Chris Wright Announces First Genesis Mission Projects Selected to Accelerate AI-Driven Scientific Discovery.

“Developing AI tools that can meaningfully improve nuclear waste disposal requires close collaboration between researchers and industry,” said Professor Sourav Banerjee, Director of i-MAPS at the University of South Carolina. “Deep Isolation’s expertise in repository engineering and deep borehole disposal helps ensure our project framework is grounded in practical deployment requirements while advancing AI-enabled approaches that have the potential to make site characterization faster, more data-driven, and more scientifically robust.”

“These DOE awards represent an important step toward modernizing how the nuclear industry evaluates future disposal sites and repository designs,” said Jesse Sloane, Executive Vice President of Engineering at Deep Isolation. “By combining artificial intelligence with geoscience and engineering expertise, we are helping create tools that could accelerate repository development while maintaining the scientific rigor and unwavering commitment to safety required for effective and responsible long-term nuclear waste management.”

The first LBNL-led initiative, Project GeoTrace, will use AI-assisted tools to transform legacy geological records into detailed digital models for site characterization and subsurface fatal flaw analysis. The second LBNL-led project will develop an AI-driven platform using digital twins, geographic information system data and faster computer models to support repository design and performance analysis. Building on previous collaborations between Deep Isolation and LBNL, the two initiatives combine complementary expertise in repository engineering, geoscience and artificial intelligence to create a more integrated workflow spanning site characterization, repository design and performance evaluation. The USC-led initiative, AI-STRATA3D, will combine geological data, physics-based modeling and artificial intelligence to rapidly evaluate candidate sites, identify potential fatal flaws and refine predictions as new information becomes available.

Together, the projects are expected to create a more connected framework spanning initial site screening, subsurface characterization, repository design and performance analysis. As the sole industrial partner on the three initiatives, Deep Isolation will contribute borehole data, repository engineering expertise and practical screening criteria to help ensure the resulting tools reflect the technical requirements for future borehole repository development.

About the Genesis Mission

The Genesis Mission is a national initiative led by the U.S. Department of Energy and its 17 national laboratories to build an advanced scientific platform that uses artificial intelligence to accelerate discovery science, strengthen national security and drive energy innovation. The initiative brings together DOE’s supercomputers, scientific data, research facilities and emerging quantum technologies with expertise from industry and academia. Through this integrated platform and a series of national science and technology challenges, the Genesis Mission aims to increase the productivity and impact of U.S. research and development and accelerate progress on complex challenges across energy, science and national security.

About Deep Isolation

Deep Isolation (OTCQB: DBHL) 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 solution 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: deepisolation.com. 

###

Media Contact:
Sophie McCallum
media@deepisolation.com

Investor Contact:
Caldwell Bailey
InvestorRelations@deepisolation.com

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 or upon written request to Deep Isolation at InvestorRelations@deepisolation.com or CorpSec@deepisolation.com.

### 

BERKELEY, CA – Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced that its application for listing its common stock for trading on the OTCQB Venture Market has been approved. The Company’s common stock is now available to trade under the ticker symbol “DBHL”.

“We are excited to begin trading on the OTCQB, offering public market investors the ability to invest in our innovative nuclear waste disposal technology,” said Rod Baltzer, President & CEO of Deep Isolation. “Becoming a publicly traded company allows investors to join us in advancing proven, science-based innovation to address one of the world’s most pressing energy challenges.”

The OTCQB listing provides Deep Isolation with improved access to capital markets as the Company continues to advance the development and demonstration of its proprietary technologies based on its Universal Canister System, which addresses the need for storage, transport and disposal of reactor waste and facilitates the safe, permanent disposal of nuclear waste deep underground as a cost-effective alternative to traditional methods.

Deep Isolation’s OTCQB listing builds on a series of significant achievements in 2025, highlighted by its successful Alternative Public Offering (APO), as well as an oversubscribed $33 million private offering. Since the APO, the Company has advanced multiple strategic and technical initiatives, while benefiting from increasingly favorable market conditions in the nuclear sector. These have been driven by growing global recognition of nuclear energy’s essential role in the clean energy transition and the urgent need for permanent nuclear waste solutions.

Recent strategic and technical milestones include:

• Launch of a non-radioactive, full-scale, at-depth demonstration of the Company’s deep borehole waste disposal technology at Halliburton’s Drilling Technology Facility near Cameron, TX.
• Selection for ARPA-E’s SCALEUP Ready program to support commercial deployment of Deep Isolation’s Universal Canister System. Deep Isolation is advancing through the contracting phase for funding of up to $20 million to support its Cameron, TX demonstration project and is the first company in the nuclear industry selected to participate in the SCALEUP Ready program. The project brings together a world-class project team, including Westinghouse, NAC International (TYO: 7004), Halliburton (NYSE: HAL), Occlusion Nuclear Solutions, Amentum (NYSE: AMTM), and the Deep Borehole Demonstration Center (“the DBDC”), to demonstrate a fully integrated and permanent solution for nuclear waste disposal.
• A technology licensing agreement with Navarro Research and Engineering, Inc., and the restart of the U.S. Trade and Development Agency-funded Bulgaria feasibility study.
• New strategic collaborations with Halliburton, one of the world’s leading providers of drilling and well construction services, and with Occlusion Nuclear Solutions, a global leader in well emplacement services.
• Surpassing 100 issued patents worldwide, reinforcing Deep Isolation’s position as a leading innovator in nuclear waste disposal technology and expanding protection of its proprietary deep borehole disposal and Universal Canister System technologies.
• Completion of several key technology development and commercialization projects, which together have leveraged over $7 million of grant funding to Deep Isolation from the U.S. Department of Energy and UK government to engineer and test the world’s first Universal Canister System for storage, transport, and disposal of advanced reactor waste. Through partnerships with industry leaders such as Kairos Power, Deep Isolation has further supported evidence of the performance and technical readiness of its Universal Canister System.
• Completion of work on multiple other ARPA-E funded projects, as subrecipients to Oklo (NYSE: OKLO) and Electric Power Research Institute (EPRI) all of which are expected to demonstrate Deep Isolation’s Universal Canister System and deep borehole disposal solution as an optimized platform for integrated management of high-level radioactive waste from the advanced nuclear industry.

“This listing is a significant milestone in our efforts toward the commercialization of our patented deep borehole disposal technology,” added Baltzer. “The momentum we have built demonstrates both the market opportunity and our capability in addressing this critical global nuclear waste challenge. Our successful APO and private raise in July 2025 allowed us to push ahead with development of a full-scale demonstration project to validate the safety and feasibility of our solution, and I look forward to keeping investors informed as this world-first initiative progresses.”

About the OTCQB Venture Market

The OTCQB Venture Market is designed for entrepreneurial and development stage U.S. and international companies. To be eligible, companies must meet certain financial standards, maintain current reporting, and undergo an annual verification and management certification process. The OTCQB quality standards provide a strong baseline of transparency, as well as the technology and regulation to improve the information and trading experience for investors. Companies on OTCQB are able to utilize OTC Link ATS for efficient trading and can make their information available at www.otcmarkets.com, the most visited website for researching and trading over-the-counter securities.

About Deep Isolation

Deep Isolation 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 solution 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: deepisolation.com. 

###

Media Contact:
Sophie McCallum
media@deepisolation.com

Investor Contact:
Caldwell Bailey
InvestorRelations@deepisolation.com

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, 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 on the Deep Isolation website: deepisolation.com/investors/financial-information

### 

Industry veteran relocates to Texas to support field execution of the project as Deep Isolation advances its full-scale demonstration and the next phase of commercialization

BERKELEY, CA – Deep Isolation Nuclear, Inc. (“Deep Isolation” or the “Company”), a leading innovator in nuclear waste disposal technology, today announced that Technology Demonstration Lead Jon Tedrick has relocated to Texas to support execution of the Company’s demonstration program at the Deep Borehole Demonstration Center (DBDC) near Cameron, Texas. The relocation reflects Deep Isolation’s commitment to establishing a strong field presence as the project progresses toward active operations.

The demonstration program is designed to validate key components of the Company’s deep borehole disposal solution under representative field conditions. Earlier this year, Deep Isolation and its collaborators marked the launch of the project with a groundbreaking ceremony at the DBDC. Through the project, Deep Isolation plans to demonstrate the construction of a deep borehole repository using standard oil and gas drilling practices, full-scale canister emplacement and retrieval operations using its Universal Canister System (UCS), and simulated surface handling operations.

Tedrick’s relocation coincides with Deep Isolation’s recent selection for the U.S. Department of Energy’s ARPA-E SCALEUP Ready program, which is designed to accelerate promising energy technologies toward commercial deployment. The program provides up to $20 million to the Company to support testing and demonstration activities. The Deep Isolation project brings together a world-class team, including Westinghouse, NAC International (TYO: 7004), Halliburton (NYSE: HAL), Occlusion Nuclear Solutions, Amentum (NYSE: AMTM) and the Deep Borehole Demonstration Center, to demonstrate an integrated solution for the storage, transportation and permanent disposal of advanced reactor and nuclear recycling waste.

As Technology Demonstration Lead, Tedrick is responsible for coordinating field execution activities, supporting engagement with project collaborators and contractors, and helping oversee preparations for upcoming demonstration activities at the Cameron site. Tedrick brings more than 28 years of drilling and project management experience spanning mining, geothermal, environmental and energy applications, including leadership of major drilling programs for the U.S. Department of Energy.

“The Cameron demonstration program is an important milestone in our path to commercialization and a critical opportunity to validate our technology at full scale,” said Rod Baltzer, CEO of Deep Isolation. “As we move closer to field execution, having Jon on the ground strengthens on-site coordination and helps ensure we are prepared to successfully deliver this first-of-its-kind demonstration. His extensive drilling and project leadership experience will be invaluable as we advance toward active operations.”

“Throughout my career, I have worked on complex drilling projects across the energy, mining and environmental sectors, but few have combined this level of technical innovation with such an important mission,” said Tedrick. “Relocating to Texas allows me to work closely with our field team as we prepare for the next phase of execution. I am excited to help demonstrate how proven drilling technologies can be applied to address one of the nuclear industry’s most significant challenges.”

As interest in advanced nuclear energy continues to grow, the need for practical, scalable solutions for the management and disposal of spent nuclear fuel and high-level radioactive waste has become increasingly important. Supported by ARPA-E’s SCALEUP Ready program and a consortium of leading industry collaborators, the Cameron project is designed to advance the technical, operational and regulatory foundations needed for future deployment of an integrated solution for the storage, transportation and permanent disposal of advanced reactor and nuclear recycling waste.

About Deep Isolation

Deep Isolation 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 solution 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: deepisolation.com 

Media Contact:
Sophie McCallum
media@deepisolation.com

Investor Contact:
Caldwell Bailey
InvestorRelations@deepisolation.com

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.

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