<SEC-DOCUMENT>0001515156-25-000021.txt : 20250325
<SEC-HEADER>0001515156-25-000021.hdr.sgml : 20250325
<ACCEPTANCE-DATETIME>20250325175809
ACCESSION NUMBER:		0001515156-25-000021
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250323
FILED AS OF DATE:		20250325
DATE AS OF CHANGE:		20250325

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Williamson Jeremy
		CENTRAL INDEX KEY:			0001993283
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37822
		FILM NUMBER:		25769545

	MAIL ADDRESS:	
		STREET 1:		8051 E. MAPLEWOOD AVE, SUITE 210
		CITY:			GREENWOOD VILLAGE
		STATE:			CO
		ZIP:			80111

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Arq, Inc.
		CENTRAL INDEX KEY:			0001515156
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS CHEMICAL PRODUCTS [2890]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				275472457
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		8051 E. MAPLEWOOD AVE., STE 210
		CITY:			GREENWOOD VILLAGE
		STATE:			CO
		ZIP:			80111
		BUSINESS PHONE:		720-598-3500

	MAIL ADDRESS:	
		STREET 1:		8051 E. MAPLEWOOD AVE., STE 210
		CITY:			GREENWOOD VILLAGE
		STATE:			CO
		ZIP:			80111

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Advanced Emissions Solutions, Inc.
		DATE OF NAME CHANGE:	20110311
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1742939882.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-03-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001515156</issuerCik>
        <issuerName>Arq, Inc.</issuerName>
        <issuerTradingSymbol>ARQ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001993283</rptOwnerCik>
            <rptOwnerName>Williamson Jeremy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ARQ, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>8051 E. MAPLEWOOD AVE., SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>GREENWOOD VILLAGE</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Operating Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-03-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>28069</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>143932</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-03-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5233</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.68</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>138699</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Share Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-03-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>28069</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-03-10</value>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>56138</value>
                    <footnoteId id="F4"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>28069</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.</footnote>
        <footnote id="F2">The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a &quot;sell to cover&quot; transaction.</footnote>
        <footnote id="F3">Each Performance Share Unit (&quot;PSU&quot;) represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.</footnote>
        <footnote id="F4">Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jeremy Williamson</signatureName>
        <signatureDate>2025-03-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
