<SEC-DOCUMENT>0001543174-25-000006.txt : 20251209
<SEC-HEADER>0001543174-25-000006.hdr.sgml : 20251209
<ACCEPTANCE-DATETIME>20251209180945
ACCESSION NUMBER:		0001543174-25-000006
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251205
FILED AS OF DATE:		20251209
DATE AS OF CHANGE:		20251209

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TANNENBAUM RENEE P
		CENTRAL INDEX KEY:			0001543174
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31812
		FILM NUMBER:		251560241

	MAIL ADDRESS:	
		STREET 1:		9220 KIRBY DRIVE
		STREET 2:		SUITE 500
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77054

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ANI PHARMACEUTICALS INC
		CENTRAL INDEX KEY:			0001023024
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				582301143
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		210 MAIN STREET WEST
		CITY:			BAUDETTE
		STATE:			MN
		ZIP:			56623
		BUSINESS PHONE:		2186343500

	MAIL ADDRESS:	
		STREET 1:		210 MAIN STREET WEST
		CITY:			BAUDETTE
		STATE:			MN
		ZIP:			56623

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BIOSANTE PHARMACEUTICALS INC
		DATE OF NAME CHANGE:	19991228

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BEN ABRAHAM TECHNOLOGIES INC
		DATE OF NAME CHANGE:	19991027
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1765321783.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-12-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001023024</issuerCik>
        <issuerName>ANI PHARMACEUTICALS INC</issuerName>
        <issuerTradingSymbol>ANIP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001543174</rptOwnerCik>
            <rptOwnerName>TANNENBAUM RENEE P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ANI PHARMACEUTICALS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>210 MAIN STREET WEST</rptOwnerStreet2>
            <rptOwnerCity>BAUDETTE</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>56623</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-12-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1800</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>81.15</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25157</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The shares were sold in multiple trades at prices ranging from $81.14 to $81.16. The price reported above reflects the weighted average sales price.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Renee P. Tannenbaum, by attorney-in-fact Meredith W. Cook</signatureName>
        <signatureDate>2025-12-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
