<SEC-DOCUMENT>0000919574-21-004774.txt : 20210730
<SEC-HEADER>0000919574-21-004774.hdr.sgml : 20210730
<ACCEPTANCE-DATETIME>20210730145618
ACCESSION NUMBER:		0000919574-21-004774
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210729
FILED AS OF DATE:		20210730
DATE AS OF CHANGE:		20210730

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Casdin Capital, LLC
		CENTRAL INDEX KEY:			0001534261
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40674
		FILM NUMBER:		211132016

	BUSINESS ADDRESS:	
		STREET 1:		1350 AVENUE OF THE AMERICAS
		STREET 2:		SUITE 2600
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		212.300.5575

	MAIL ADDRESS:	
		STREET 1:		1350 AVENUE OF THE AMERICAS
		STREET 2:		SUITE 2600
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Casdin Partners GP, LLC
		CENTRAL INDEX KEY:			0001534260
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40674
		FILM NUMBER:		211132015

	BUSINESS ADDRESS:	
		STREET 1:		1350 AVENUE OF THE AMERICAS
		STREET 2:		SUITE 1140
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		212.300.5575

	MAIL ADDRESS:	
		STREET 1:		1350 AVENUE OF THE AMERICAS
		STREET 2:		SUITE 1140
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Casdin Partners Master Fund, L.P.
		CENTRAL INDEX KEY:			0001534265
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40674
		FILM NUMBER:		211132017

	BUSINESS ADDRESS:	
		STREET 1:		WALKER HOUSE
		STREET 2:		87 MARY STREET
		CITY:			GEORGE TOWN
		STATE:			E9
		ZIP:			KY1-9001
		BUSINESS PHONE:		212.300.5575

	MAIL ADDRESS:	
		STREET 1:		WALKER HOUSE
		STREET 2:		87 MARY STREET
		CITY:			GEORGE TOWN
		STATE:			E9
		ZIP:			KY1-9001

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Casdin Eli
		CENTRAL INDEX KEY:			0001534264

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40674
		FILM NUMBER:		211132014

	MAIL ADDRESS:	
		STREET 1:		1350 AVENUE OF THE AMERICAS
		STREET 2:		SUITE 1140
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAXCYTE, INC.
		CENTRAL INDEX KEY:			0001287098
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
		IRS NUMBER:				522210438
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		22 FIRSTFIELD ROAD
		STREET 2:		SUITE 250
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20878
		BUSINESS PHONE:		301-517-5556

	MAIL ADDRESS:	
		STREET 1:		22 FIRSTFIELD ROAD
		STREET 2:		SUITE 250
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20878

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MAXCYTE INC
		DATE OF NAME CHANGE:	20040415
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>ownership.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-07-29</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001287098</issuerCik>
        <issuerName>MAXCYTE, INC.</issuerName>
        <issuerTradingSymbol>MXCT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001534265</rptOwnerCik>
            <rptOwnerName>Casdin Partners Master Fund, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1350 AVENUE OF THE AMERICAS</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2600</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001534261</rptOwnerCik>
            <rptOwnerName>Casdin Capital, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1350 AVENUE OF THE AMERICAS</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2600</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001534260</rptOwnerCik>
            <rptOwnerName>Casdin Partners GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1350 AVENUE OF THE AMERICAS</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2600</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001534264</rptOwnerCik>
            <rptOwnerName>Casdin Eli</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1350 AVENUE OF THE AMERICAS</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2600</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12171334</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The securities are owned directly by Casdin Partners Master Fund, LP (the &quot;Master Fund&quot;) and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC, the general partner of the Master Fund, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.</footnote>
    </footnotes>

    <remarks>Each Reporting Person disclaims beneficial ownership in the securities reported on this Form 3 except to the extent of its or his pecuniary interest, if any, therein, and this report shall not be deemed to be an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.</remarks>

    <ownerSignature>
        <signatureName>Casdin Partners Master Fund, LP, By: Casdin Partners GP, LLC, its General Partner, By: /s/ Eli Casdin, Managing Member</signatureName>
        <signatureDate>2021-07-30</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Casdin Capital LLC, By: /s/ Eli Casdin, Managing Member</signatureName>
        <signatureDate>2021-07-30</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Casdin Partners GP LLC, By: /s/ Eli Casdin, Managing Member</signatureName>
        <signatureDate>2021-07-30</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Eli Casdin, Eli Casdin</signatureName>
        <signatureDate>2021-07-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
