<SEC-DOCUMENT>0001209191-23-058411.txt : 20231212
<SEC-HEADER>0001209191-23-058411.hdr.sgml : 20231212
<ACCEPTANCE-DATETIME>20231212194335
ACCESSION NUMBER:		0001209191-23-058411
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:			DOLAN-SWEENEY DEBORAH A
		CENTRAL INDEX KEY:			0000933025

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39245
		FILM NUMBER:		231482620

	MAIL ADDRESS:	
		STREET 1:		BAKER BOTTS L.L.P.
		STREET 2:		30 ROCKEFELLER PLAZA
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10112

	FORMER NAME:	
		FORMER CONFORMED NAME:	DOLAN DEBORAH ANN
		DATE OF NAME CHANGE:	19941121

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Sweeney Brian
		CENTRAL INDEX KEY:			0001320298

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39245
		FILM NUMBER:		231482621

	MAIL ADDRESS:	
		STREET 1:		1111 STEWART AVENUE
		CITY:			BETHPAGE
		STATE:			NY
		ZIP:			11714

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>0001320298</rptOwnerCik>
            <rptOwnerName>Sweeney Brian</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>1</isOther>
            <otherText>Trustee of 13(d) Group Member</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000933025</rptOwnerCik>
            <rptOwnerName>DOLAN-SWEENEY DEBORAH A</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>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Member of 13(d) Group</otherText>
        </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>22433</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                </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>
        <footnote id="F3">Securities are held by Brian G. Sweeney, Deborah A. Dolan-Sweeney's spouse. Ms. Dolan-Sweeney disclaims beneficial ownership of these securities beneficially owned or deemed to be beneficially owned by Mr. Sweeney and this report shall not be deemed to be an admission that Ms. Dolan-Sweeney is, for the purposes of Section 16 or for any other purpose, the beneficial owner of such securities.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Brian G. Sweeney</signatureName>
        <signatureDate>2023-12-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Brian G. Sweeney, Attorney-in-Fact for Deborah A. Dolan-Sweeney</signatureName>
        <signatureDate>2023-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
