<SEC-DOCUMENT>0001209191-23-058410.txt : 20231212
<SEC-HEADER>0001209191-23-058410.hdr.sgml : 20231212
<ACCEPTANCE-DATETIME>20231212194207
ACCESSION NUMBER:		0001209191-23-058410
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20231208
FILED AS OF DATE:		20231212
DATE AS OF CHANGE:		20231212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LHOTA JOSEPH
		CENTRAL INDEX KEY:			0001250693

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39245
		FILM NUMBER:		231482617

	MAIL ADDRESS:	
		STREET 1:		TWO PENNSYLVANIA PLAZA
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10121

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sphere Entertainment Co.
		CENTRAL INDEX KEY:			0001795250
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-AMUSEMENT & RECREATION SERVICES [7900]
		IRS NUMBER:				843755666
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		TWO PENNSYLVANIA PLAZA
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10121
		BUSINESS PHONE:		(212) 465-6000

	MAIL ADDRESS:	
		STREET 1:		TWO PENNSYLVANIA PLAZA
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10121

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Madison Square Garden Entertainment Corp.
		DATE OF NAME CHANGE:	20200417

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MSG ENTERTAINMENT SPINCO, INC.
		DATE OF NAME CHANGE:	20191126
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-12-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001795250</issuerCik>
        <issuerName>Sphere Entertainment Co.</issuerName>
        <issuerTradingSymbol>SPHR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001250693</rptOwnerCik>
            <rptOwnerName>LHOTA JOSEPH</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TWO PENNSYLVANIA PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10121</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2023-12-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4660</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4660</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21296</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each restricted stock unit (&quot;RSU&quot;) is granted under the Sphere Entertainment Co. 2020 Stock Plan for Non-Employee Directors, as amended, and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof.</footnote>
        <footnote id="F2">The RSUs are fully vested on the date of the grant and will be settled in stock or in cash on the first business day 90 days after a separation from service.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark C. Cresitello, Attorney-in-Fact for Joseph Lhota</signatureName>
        <signatureDate>2023-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
