<SEC-DOCUMENT>0001493152-25-010756.txt : 20250318
<SEC-HEADER>0001493152-25-010756.hdr.sgml : 20250318
<ACCEPTANCE-DATETIME>20250318160314
ACCESSION NUMBER:		0001493152-25-010756
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250306
FILED AS OF DATE:		20250318
DATE AS OF CHANGE:		20250318

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Heidet Florent
		CENTRAL INDEX KEY:			0002061167
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-42044
		FILM NUMBER:		25748153

	MAIL ADDRESS:	
		STREET 1:		NANO NUCLEAR ENERGY INC.
		STREET 2:		10 TIMES SQUARE, 30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Nano Nuclear Energy Inc.
		CENTRAL INDEX KEY:			0001923891
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		ORGANIZATION NAME:           	01 Energy & Transportation
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		10 TIMES SQUARE
		STREET 2:		30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
		BUSINESS PHONE:		6046875792

	MAIL ADDRESS:	
		STREET 1:		10 TIMES SQUARE
		STREET 2:		30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-03-06</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001923891</issuerCik>
        <issuerName>Nano Nuclear Energy Inc.</issuerName>
        <issuerTradingSymbol>NNE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002061167</rptOwnerCik>
            <rptOwnerName>Heidet Florent</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10 TIMES SQUARE,</rptOwnerStreet1>
            <rptOwnerStreet2>30TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10018</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Technology Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Options (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>26.97</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-03-06</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>338000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>338000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents options granted on March 6, 2025 (&quot;Grant Date&quot;) under the Issuer's 2023 Stock Option Plan #2 to purchase an aggregate of 338,000 shares of common stock, par value $0.0001 per share, of the Issuer. The options shall vest and become exercisable once vested according to the following vesting schedule subject to Dr. Heidet's continued employment with the Issuer through each applicable vesting date and may not be exercised for a fraction of an option share. The vesting schedule includes: (i) each 57,000 shares of common stock vest and become exercisable on the first and second anniversary of the Grant Date, respectively; and (ii) each 56,000 shares of common stock vest and become exercisable on the third, fourth, fifth and sixth anniversary of the Grant Date, respectively. The options are valid for 10 years from the Grant Date until March 6, 2035.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Florent Heidet</signatureName>
        <signatureDate>2025-03-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
