Form 8-K

8-K — Deep Isolation Nuclear, Inc.

Accession: 0001213900-26-081585

Filed: 2026-07-27

Period: 2026-07-23

CIK: 0001918080

SIC: 4953 (REFUSE SYSTEMS)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — ea0299252-8k_deep.htm (Primary)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities

Exchange Act of 1934

Date of Report (Date of earliest event reported):

July 23, 2026

DEEP ISOLATION NUCLEAR, INC.

(Exact Name of Registrant as Specified in Charter)

Delaware

000-56406

87-4225965

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

2001 Addison Street, Suite 300

Berkeley, CA

94704

(Address of Principal Executive Offices)

(Zip Code)

(509)-943-5222

(Registrant’s telephone number, including

area code)

Not Applicable

(Former Name or Former Address, if Changed Since

Last Report)

Check the appropriate box below if the Form 8-K filing is intended

to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction

A.2. below):

☐

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section

12(b) of the Act: None.

Indicate by check mark whether the registrant is an emerging growth

company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange

Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant

has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant

to Section 13(a) of the Exchange Act. ☐

Item 7.01 Regulation FD Disclosure.

On July 23, 2026, Deep Isolation Nuclear, Inc., a Delaware corporation

(the “Company”), issued a press release (the “Press Release”) announcing 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 and aim to

advance artificial intelligence-enabled repository site screening, design and performance analysis for nuclear waste disposal.

A copy of the Press Release referenced above is being furnished as

Exhibit 99.1 to this Current Report on Form 8-K.

The information in this Current Report on Form 8-K, including Exhibit

99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “1934

Act”), nor shall it be deemed “incorporated by reference” into any filing under the Securities Act of 1933, as amended,

or the 1934 Act, except as may be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

Exhibit Number

Description

99.1

Press Release, dated July 23, 2026

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934,

as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

DEEP ISOLATION NUCLEAR, INC.

Date: July 27, 2026

By:

/s/ Rodney Baltzer

Rodney Baltzer

President and Chief Executive Officer

EX-99.1 — PRESS RELEASE, DATED JULY 23, 2026

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Exhibit 99.1

Nuclear Innovator Deep Isolation Selected by

DOE for Three Project GENESIS Initiatives Advancing AI-Driven Nuclear Waste Research

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, July

23, 2026 – 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: https://www.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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