Form 8-K

8-K — Nano Nuclear Energy Inc.

Accession: 0001493152-26-015923

Filed: 2026-04-09

Period: 2026-04-09

CIK: 0001923891

SIC: 4911 (ELECTRIC SERVICES)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

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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): April 9, 2026

Nano

Nuclear Energy Inc.

(Exact

name of registrant as specified in its charter)

Nevada

001-42044

88-0861977

(State

or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS

Employer

Identification No.)

Times Square, 30th Floor

New

York, New York 10018

(Address

of principal executive offices, including zip code)

Registrant’s

telephone number, including area code: (212) 634-9206

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:

☐

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:

Title of

each class

Trading Symbol(s)

Name of each

exchange on which registered

Common Stock, par value

$0.0001 per share

NNE

The Nasdaq Stock Market

LLC

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 ☒

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

8.01 Other Events.

April 9, 2026, Nano Nuclear Energy Inc. (the “Company”) issued a press release announcing that it has been awarded a Gateway

for Accelerated Innovations in Nuclear (GAIN) Voucher, NE-26-38854, by U.S. Department of Energy (DOE) relating to its KRONOS MMR™

Energy System titled, “Uncertainty Quantification and Sensitivity Analysis Support for NANO Nuclear Reactor Design Using ORNL’s

Tools – SCALE/TSUNAMI”.

copy of the press release is filed as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Item

9.01 Financial Statements and Exhibits.

(d)

Exhibits

Exhibit

No.

Description

99.1

Press Release of the Company.

104

Cover

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

SIGNATURE

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.

Dated:

April 9, 2026

NANO

Nuclear Energy Inc.

By:

/s/

James Walker

Name:

James

Walker

Title:

Chief

Executive Officer

EX-99.1

Filename: ex99-1.htm · Sequence: 2

Exhibit

99.1

NANO

Nuclear Granted U.S. Department of Energy’s GAIN Voucher Award in Collaboration with Oak Ridge National Laboratory to Develop a

Validated UQ Framework Tailored to the KRONOS MMR™ Energy System

New

York, N.Y., April 9, 2026 — NANO Nuclear Energy Inc. (NASDAQ: NNE) (“NANO Nuclear” or “the Company”),

a leading advanced nuclear micro modular reactor (MMR) and technology company focused on developing clean energy solutions, today announced

that it has been awarded a Gateway for Accelerated Innovations in Nuclear (GAIN) Voucher, NE-26-38854, by U.S. Department of Energy

(DOE) relating to its KRONOS MMR™ Energy System titled, “Uncertainty Quantification and Sensitivity Analysis Support

for NANO Nuclear Reactor Design Using ORNL’s Tools – SCALE/TSUNAMI”.

U.S.

Department of Energy’s GAIN Voucher Award can be found here: https://gain.inl.gov/uncertainty-quantification-and-sensitivity-analysis-support/.

Figure

1 – Rendering of NANO Nuclear KRONOS MMR™ (Micro Modular Reactor) Energy System

“The

receipt of this DOE’s GAIN Voucher Award represents another important achievement for our engineering and scientific teams, as

well as for our company as a whole,” said Alisha Kasam-Griffith, Ph.D., Director of Reactor Design of NANO Nuclear. “Our

collaboration with the Oak Ridge National Laboratory enables us to draw on the expertise of leading scientists, engineers, and researchers

to further advance the KRONOS MMR™ Energy System for real-world applications as we progress toward construction, demonstration,

and eventual deployment at scale.”

Figure

2 – NANO Nuclear Energy has completed site-characterization for its KRONOS MMR™ Energy System in partnership with the University

of Illinois.

a first-of-a-kind advanced reactor, the patented KRONOS MMR™ Energy System requires rigorous uncertainty quantification (UQ) and

sensitivity analysis to demonstrate safety margins, performance reliability, and licensing readiness.

NANO

Nuclear, in collaboration with the Oak Ridge National Laboratory (ORNL), will apply the SCALE/TSUNAMI code suite to quantify the impact

of nuclear data, modeling assumptions, and operational parameters on key reactor physics metrics, including reactivity, power distribution,

and temperature coefficients. ORNL’s analytical tools and expertise, which are recognized by the U.S> Nuclear Regulatory Commission

(NRC), will enable development of a validated UQ framework tailored to the KRONOS MMR™ design.

“We

are pleased to receive our second GAIN voucher as a company and the first for our KRONOS MMR™ Energy System,” said Jay

Yu, Founder and Chairman of NANO Nuclear. “This award reflects the progress we have made in advancing the micro modular reactor

through its development stages, and I want to recognize the efforts of our amazing engineering and scientific teams in securing this

voucher. Looking ahead, we expect our collaboration with ORNL to generate valuable data that will help inform ongoing development and

support the positioning of KRONOS MMR™ for future deployment.”

The

U.S. Department of Energy Office of Nuclear Energy’s (DOE-NE) Gateway for Accelerated Innovation in Nuclear (GAIN) program provides

the nuclear community with the technical, regulatory, and financial support needed to move innovative nuclear technologies toward commercialization

while ensuring the continued, safe, and economic operation of the existing fleet.

This

collaboration will strengthen confidence in design margins, create the potential to reduce regulatory uncertainty, and support pre-licensing

engagement with DOE and the NRC. The resulting analysis framework will accelerate KRONOS MMR™ design maturation and contribute

to commercialization of scalable, advanced microreactor technology.

“NANO

Nuclear is continuing to advance the KRONOS MMR™ Energy System toward real-world deployment, and the award of this GAIN voucher

provides meaningful support as we prepare the technology for the next phase,” said James Walker, Chief Executive Officer of

NANO Nuclear. “Our collaboration with ORNL, one of the nation’s leading research laboratories, builds on an established

relationship and will support targeted testing and data generation to inform system development and validation. The support of the DOE

further underscores both the technical progress we have made and the strength of our approach as we continue to move the KRONOS MMR™

through its construction, licensing and deployment stages.”

GAIN

NE voucher recipients do not receive direct financial awards as the vouchers provide funding to DOE laboratories (in this case ORNL)

to help businesses overcome critical technological and commercialization challenges. These vouchers thus grant innovators like NANO Nuclear

access to the extensive nuclear research expertise and capabilities across the DOE national laboratory complex.

About

NANO Nuclear Energy Inc.

NANO

Nuclear Energy Inc. (NASDAQ: NNE) is a North American advanced technology-driven nuclear energy company seeking to become a commercially

focused, diversified, and vertically integrated company across five business lines: (i) cutting edge portable and other microreactor

technologies, (ii) nuclear fuel supply chain, (iii) nuclear fuel transportation, (iv) nuclear applications for space and (v) nuclear

industry consulting services. NANO Nuclear believes it is the first portable nuclear microreactor company to be listed publicly in the

U.S.

Led

by a world-class nuclear engineering team, NANO Nuclear’s reactor products in development include its lead project, the patented

KRONOS MMR™ Energy System, a stationary high-temperature gas-cooled reactor that is in construction permit

pre-application engagement with the U.S. Nuclear Regulatory Commission (NRC) in collaboration with University of Illinois Urbana-Champaign

(U. of I.), ZEUS™, a solid core battery reactor, and the space focused, portable LOKI MMR™,

each representing advanced developments in clean energy solutions that are modular, on-demand capable, advanced nuclear microreactors.

Advanced

Fuel Transportation Inc. (AFT), a NANO Nuclear subsidiary, is led by former executives from the largest transportation company in

the world aiming to build a North American transportation company that will provide commercial quantities of HALEU fuel to small modular

reactors, microreactor companies, national laboratories, military, and U.S. Department of Energy programs. Through NANO Nuclear, AFT

is the exclusive licensee of a patented high-capacity HALEU fuel transportation basket developed by three major U.S. national nuclear

laboratories and funded by the Department of Energy. Assuming development and commercialization, AFT is expected to form part of the

only vertically integrated nuclear fuel business of its kind in North America.

HALEU

Energy Fuel Inc. (HEF), a NANO Nuclear subsidiary, is focusing on the development of the fuel supply chain for NANO Nuclear’s

own microreactors as well as the broader advanced nuclear reactor industry.

NANO

Nuclear Space Inc. (NNS), a NANO Nuclear subsidiary, is exploring the potential commercial applications of NANO Nuclear’s developing

micro nuclear reactor technology in space. NNS is focusing on applications such as the LOKI MMR™ system and other power

systems for extraterrestrial projects and human sustaining environments, and potentially propulsion technology for long haul space missions.

NNS’ initial focus will be on cis-lunar applications, referring to uses in the space region extending from Earth to the area surrounding

the Moon’s surface.

For

more corporate information please visit: https://NanoNuclearEnergy.com/

For

further NANO Nuclear information, please contact:

Email: IR@NANONuclearEnergy.com

Business Tel: (212) 634-9206

PLEASE FOLLOW OUR SOCIAL MEDIA PAGES HERE:

NANO Nuclear Energy LINKEDIN

NANO Nuclear Energy YOUTUBE

NANO Nuclear Energy X PLATFORM

Cautionary

Note Regarding Forward Looking Statements

This

news release and statements of NANO Nuclear’s management in connection with this news release contain or may contain “forward-looking

statements” within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation

Reform Act of 1995. In this context, forward-looking statements mean statements related to future events, which may impact our expected

future business and financial performance, and often contain words such as “expects”, “anticipates”, “intends”,

“explore”, “aims,” “estimates”, “plans”, “believes”, “potential”,

“eventual,” “goal,” “will”, “should”, “could”, “would” or “may”

and other words of similar meaning. In this press release, forward-looking statements include those related to the anticipated benefits

to the Company of GAIN Voucher award described herein. These and other forward-looking statements are based on information available

to us as of the date of this news release and represent management’s current views and assumptions. Forward-looking statements

are not guarantees of future performance, events or results and involve significant known and unknown risks, uncertainties and other

factors, which may be beyond our control. In addition, for NANO Nuclear, particular risks and uncertainties that could cause our actual

future results to differ materially from those expressed in our forward-looking statements include but are not limited to the following:

(i) risks related to our U.S. Department of Energy (“DOE”), U.S. Nuclear Regulatory Commission (“NRC”), Canadian

Nuclear Safety Commission (“CNSC”) or related state or other U.S. or non-U.S nuclear licensing submissions, (ii) risks related

the development of new or advanced technology and the acquisition of complementary technology or businesses, including difficulties with

design and testing, cost overruns, regulatory delays, integration issues and the development of competitive technology, (iii) our ability

to obtain contracts and funding to be able to continue operations, (iv) risks related to uncertainty regarding our ability to technologically

develop and commercially deploy a competitive advanced nuclear reactor or other technology in the timelines we anticipate, if ever, (v)

risks related to the impact of U.S. and non-U.S. government regulation, policies and licensing requirements, including by the DOE, and

the NRC, including those associated with the recently enacted ADVANCE Act and the May 23, 2025 Executive Orders seeking to streamline

nuclear regulation, , and (vi) similar risks and uncertainties associated with the operating a developing business a highly regulated,

competitive and rapidly evolving industry, including that our plans may change and we may use our cash on hand faster or in different

ways than anticipated as our business requires. Readers are cautioned not to place undue reliance on these forward-looking statements,

which apply only as of the date of this news release. These factors may not constitute all factors that could cause actual results to

differ from those discussed in any forward-looking statement, and NANO Nuclear therefore encourages investors to review other factors

that may affect future results in its filings with the SEC, which are available for review at www.sec.gov and at https://ir.nanonuclearenergy.com/financial-information/sec-filings.

Accordingly, forward-looking statements should not be relied upon as a predictor of actual results. We do not undertake to update our

forward-looking statements to reflect events or circumstances that may arise after the date of this news release.

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