<SEC-DOCUMENT>0000950170-24-109324.txt : 20240925
<SEC-HEADER>0000950170-24-109324.hdr.sgml : 20240925
<ACCEPTANCE-DATETIME>20240925160004
ACCESSION NUMBER:		0000950170-24-109324
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240923
FILED AS OF DATE:		20240925
DATE AS OF CHANGE:		20240925

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WHITMORE R JANET
		CENTRAL INDEX KEY:			0001173970
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22333
		FILM NUMBER:		241323988

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NANOPHASE TECHNOLOGIES Corp
		CENTRAL INDEX KEY:			0000883107
		STANDARD INDUSTRIAL CLASSIFICATION:	PERFUMES, COSMETICS & OTHER TOILET PREPARATIONS [2844]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		IRS NUMBER:				363687863
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1319 MARQUETTE DRIVE
		CITY:			ROMEOVILLE
		STATE:			IL
		ZIP:			60446
		BUSINESS PHONE:		6303231200

	MAIL ADDRESS:	
		STREET 1:		1319 MARQUETTE DRIVE
		CITY:			ROMEOVILLE
		STATE:			IL
		ZIP:			60446

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NANOPHASE TECHNOLOGIES CORPORATION
		DATE OF NAME CHANGE:	19970305
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-09-23</periodOfReport>

    <issuer>
        <issuerCik>0000883107</issuerCik>
        <issuerName>NANOPHASE TECHNOLOGIES Corp</issuerName>
        <issuerTradingSymbol>NANX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001173970</rptOwnerCik>
            <rptOwnerName>WHITMORE R JANET</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1319 MARQUETTE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ROMEOVILLE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60446</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>false</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-09-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>26000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.59</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1979909</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2024-09-24</value>
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                    <footnoteId id="F2"/>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                    <value>2003059</value>
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                <value>Common Stock</value>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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    <derivativeTable>
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                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20030</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20030</value>
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            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.9</value>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2016-11-17</value>
            </exerciseDate>
            <expirationDate>
                <value>2026-11-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.05</value>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2016-11-17</value>
            </exerciseDate>
            <expirationDate>
                <value>2026-11-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.18</value>
                <footnoteId id="F6"/>
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            <exerciseDate>
                <value>2016-11-17</value>
            </exerciseDate>
            <expirationDate>
                <value>2026-11-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.84</value>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
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            </exerciseDate>
            <expirationDate>
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            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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                <sharesOwnedFollowingTransaction>
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                <footnoteId id="F6"/>
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            <underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
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            <conversionOrExercisePrice>
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                <footnoteId id="F6"/>
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            <exerciseDate>
                <value>2016-11-17</value>
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            <expirationDate>
                <value>2026-11-17</value>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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        </derivativeHolding>
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            <expirationDate>
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            <underlyingSecurity>
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        <derivativeHolding>
            <securityTitle>
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                <footnoteId id="F7"/>
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            <expirationDate>
                <value>2027-02-21</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
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        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
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            <conversionOrExercisePrice>
                <value>0.82</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2019-05-23</value>
                <footnoteId id="F7"/>
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            <expirationDate>
                <value>2028-05-23</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000</value>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            <exerciseDate>
                <value>2021-06-18</value>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <value>2027-06-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
                    <value>6667</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.17</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2022-12-28</value>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-12-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20000</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.165</value>
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            <exerciseDate>
                <value>2023-12-20</value>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-12-20</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                    <value>20000</value>
                </underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
                    <value>20000</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock (right to purchase)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.61</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2024-12-27</value>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <value>2030-12-27</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>12600</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12600</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The purchase of these 26,000 shares was made through 10 trades, all at $1.59/share.  The trades were made throughout the day, with the smallest purchases (3 different transactions) being 100 shares and the largest being 6,000 shares.  The average purchased amount among these transactions was 2,600 shares.</footnote>
        <footnote id="F2">The purchase of these 23,150 shares was made through 3 trades, all at $1.60/share.  The trades amounted to 3,000, 20,050, and 100 shares, respectively.</footnote>
        <footnote id="F3">Each share of deferred common stock represents the right to receive one share of common stock.</footnote>
        <footnote id="F4">The deferred common stock becomes payable upon the reporting person's termination of service as a director of the Company.</footnote>
        <footnote id="F5">Pursuant to such plan, the reporting person elected to defer receipt of such shares and receive a cumulative total of 20,030 shares of deferred common stock which will all be accounted for under the Company's Non-Employee Director Deferred Compensaion Plan.</footnote>
        <footnote id="F6">The stock appreciation rights payable upon the reporting person's termination of service as a director of the Company were terminated, with stock options issued at identical exercise prices to the conversion prices of the respective stock appreciation rights.  Two-thousand shares were issued with an exercise price of $0.90, 2,000 were issued with an exercise price of $1.05, 2,000 were issued with an exercise price of $1.18, 2,000 were issued with an exercise price of $0.84, 2,000 were issued with an exercise price of $1.85. 2,000 were issued with an exercise price of $1.10, and 2,000 were issued with an exercise price of $0.99.</footnote>
        <footnote id="F7">Subject to certain restrictions, beginning on this date, options vest in three equal annual installments.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Jess Jankowski under UPA for R. Janet Whitmore</signatureName>
        <signatureDate>2024-09-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
