<SEC-DOCUMENT>0001628280-24-024446.txt : 20240521
<SEC-HEADER>0001628280-24-024446.hdr.sgml : 20240521
<ACCEPTANCE-DATETIME>20240521081312
ACCESSION NUMBER:		0001628280-24-024446
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240517
FILED AS OF DATE:		20240521
DATE AS OF CHANGE:		20240521

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Foster Karen A.
		CENTRAL INDEX KEY:			0001683151
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36362
		FILM NUMBER:		24966889

	MAIL ADDRESS:	
		STREET 1:		C/O BIOLIFE SOLUTIONS, INC.
		STREET 2:		3303 MONTE VILLA PARKWAY, SUITE 310
		CITY:			BOTHELL
		STATE:			WA
		ZIP:			98021

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BIOLIFE SOLUTIONS INC
		CENTRAL INDEX KEY:			0000834365
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		IRS NUMBER:				943076866
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3303 MONTE VILLA PARKWAY
		STREET 2:		SUITE 310
		CITY:			BOTHELL
		STATE:			WA
		ZIP:			98021
		BUSINESS PHONE:		4254011400

	MAIL ADDRESS:	
		STREET 1:		3303 MONTE VILLA PARKWAY
		STREET 2:		SUITE 310
		CITY:			BOTHELL
		STATE:			WA
		ZIP:			98021

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BIOLIFE SOLUTION INC
		DATE OF NAME CHANGE:	20030113

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CRYOMEDICAL SCIENCES INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1716293584.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-05-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000834365</issuerCik>
        <issuerName>BIOLIFE SOLUTIONS INC</issuerName>
        <issuerTradingSymbol>BLFS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001683151</rptOwnerCik>
            <rptOwnerName>Foster Karen A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3303 MONTE VILLA PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 310</rptOwnerStreet2>
            <rptOwnerCity>BOTHELL</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98021</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Quality and Operations</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>1</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-05-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>85</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>22.18</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>158579</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The sale reported herein was made pursuant to a Rule 10b5-1 (c) trading plan adopted by the reporting person effective as of 02-08-2021 to satisfy tax withholding obligations in connection with the vesting of shares of restricted stock.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Karen A. Foster</signatureName>
        <signatureDate>2024-05-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
