<SEC-DOCUMENT>0000052234-21-000001.txt : 20210330
<SEC-HEADER>0000052234-21-000001.hdr.sgml : 20210330
<ACCEPTANCE-DATETIME>20210330170726
ACCESSION NUMBER:		0000052234-21-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210329
FILED AS OF DATE:		20210330
DATE AS OF CHANGE:		20210330

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WINMILL & CO. INC
		CENTRAL INDEX KEY:			0000052234
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12681
		FILM NUMBER:		21787581

	BUSINESS ADDRESS:	
		STREET 1:		11 HANOVER SQ
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005
		BUSINESS PHONE:		2127850900

	MAIL ADDRESS:	
		STREET 1:		11 HANOVER SQ
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005

	FORMER NAME:	
		FORMER CONFORMED NAME:	WINMILL & CO INC
		DATE OF NAME CHANGE:	19990409

	FORMER NAME:	
		FORMER CONFORMED NAME:	BULL & BEAR GROUP INC
		DATE OF NAME CHANGE:	19920703

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Global Self Storage, Inc.
		CENTRAL INDEX KEY:			0001031235
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				133926714
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11 HANOVER SQUARE
		STREET 2:		12TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005
		BUSINESS PHONE:		2127850900

	MAIL ADDRESS:	
		STREET 1:		11 HANOVER SQUARE
		STREET 2:		12TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10005

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Self Storage Group, Inc.
		DATE OF NAME CHANGE:	20131118

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GLOBAL INCOME FUND, INC.
		DATE OF NAME CHANGE:	20060215

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GLOBAL INCOME FUND INC
		DATE OF NAME CHANGE:	19990830
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-03-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001031235</issuerCik>
        <issuerName>Global Self Storage, Inc.</issuerName>
        <issuerTradingSymbol>SELF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000052234</rptOwnerCik>
            <rptOwnerName>WINMILL &amp; CO. INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11 HANOVER SQ</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10005</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See &quot;Explanation of Responses&quot;</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-03-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>135101</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.845</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5087</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This transaction reflects a capital contribution of shares from Winmill &amp; Co. Incorporated to its wholly owned subsidiary, Midas Securities Group, Inc.</footnote>
    </footnotes>

    <remarks>The Reporting Person may be deemed to be an affiliate of the Issuer. The Winmill Family Trust owns all of the voting stock of the Reporting Person. Thomas B. Winmill and Mark C. Winmill are trustees of the Winmill Family Trust and may be deemed to have indirect beneficial ownership of the Reporting Person's shares as a result of their status as controlling persons of the Winmill Family Trust and the Reporting Person. Each of Thomas B. Winmill, Mark C. Winmill and the Winmill Family Trust disclaims beneficial ownership of these shares.</remarks>

    <ownerSignature>
        <signatureName>Donald Klimoski II, General Counsel, on behalf of Winmill &amp; Co. Incorporated</signatureName>
        <signatureDate>2021-03-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
