<SEC-DOCUMENT>0000950170-25-113598.txt : 20250908
<SEC-HEADER>0000950170-25-113598.hdr.sgml : 20250908
<ACCEPTANCE-DATETIME>20250908170144
ACCESSION NUMBER:		0000950170-25-113598
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250904
FILED AS OF DATE:		20250908
DATE AS OF CHANGE:		20250908

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Stewart Richard Alistair
		CENTRAL INDEX KEY:			0001713369
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	033-80623
		FILM NUMBER:		251300750

	MAIL ADDRESS:	
		STREET 1:		22722 29TH DR SE
		STREET 2:		SUITE 100
		CITY:			BOTHELL
		STATE:			WA
		ZIP:			98021

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ACHIEVE LIFE SCIENCES, INC.
		CENTRAL INDEX KEY:			0000949858
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				954343413
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		22722 29TH DR. SE
		STREET 2:		SUITE 100
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98021
		BUSINESS PHONE:		425-686-1500

	MAIL ADDRESS:	
		STREET 1:		22722 29TH DR. SE
		STREET 2:		SUITE 100
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98021

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ONCOGENEX PHARMACEUTICALS, INC.
		DATE OF NAME CHANGE:	20080821

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SONUS PHARMACEUTICALS INC
		DATE OF NAME CHANGE:	19950825
</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>2025-09-04</periodOfReport>

    <issuer>
        <issuerCik>0000949858</issuerCik>
        <issuerName>ACHIEVE LIFE SCIENCES, INC.</issuerName>
        <issuerTradingSymbol>ACHV</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001713369</rptOwnerCik>
            <rptOwnerName>Stewart Richard Alistair</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>22722 29TH DR SE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>BOTHELL</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98021</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>Chieve Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Restricted Stock Unit</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-09-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>140000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-01-22</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>140000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Restricted Stock Unit</value>
                <footnoteId id="F4"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2025-09-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>157500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-01-13</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>157500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represent PRSUs previously reported on January 24, 2024 that were earned by the Reporting Person upon the achievement of certain performance criteria as certified by the Compensation Commmittee of the Issuer's Board of Directors.</footnote>
        <footnote id="F2">Each PRSU represents a contingent right to receive one share of the issuer's common stock at settlement.</footnote>
        <footnote id="F3">Pursuant to the terms of the award agreement governing the PRSU, the total number of shares underlying the PRSU vest on the achievement of one of certain milestones.</footnote>
        <footnote id="F4">Represent PRSUs previously reported on January 14, 2025 that were earned by the Reporting Person upon the achievement of certain performance criteria as certified by the Compensation Commmittee of the Issuer's Board of Directors.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Sandra Thomson as attorney-in-fact for Richard Stewart</signatureName>
        <signatureDate>2025-09-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
