-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 MbWTMsDWfAHFJMGi/E9jr+dtH34flZhe9CX85V3JHE6DDunxLDgn/7v/4m9EwyMk
 yvMwXGw8lQI9wT4GuTFpkA==

<SEC-DOCUMENT>0000905716-11-000004.txt : 20110301
<SEC-HEADER>0000905716-11-000004.hdr.sgml : 20110301
<ACCEPTANCE-DATETIME>20110301113240
ACCESSION NUMBER:		0000905716-11-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110224
FILED AS OF DATE:		20110301
DATE AS OF CHANGE:		20110301

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HICKOK INC
		CENTRAL INDEX KEY:			0000047307
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				340288470
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		10514 DUPONT AVE
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44108
		BUSINESS PHONE:		2165418060

	MAIL ADDRESS:	
		STREET 1:		10514 DUPONT AVE
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44108

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HICKOK ELECTRICAL INSTRUMENT CO
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HUDSON T HAROLD
		CENTRAL INDEX KEY:			0001245830

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-00147
		FILM NUMBER:		11649750

	MAIL ADDRESS:	
		STREET 1:		C/O HICKOK INCORPORATED
		STREET 2:		10514 DUPONT AVENUE
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44108
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-02-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000047307</issuerCik>
        <issuerName>HICKOK INC</issuerName>
        <issuerTradingSymbol>HICKA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001245830</rptOwnerCik>
            <rptOwnerName>HUDSON T HAROLD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O HICKOK INCORPORATED</rptOwnerStreet1>
            <rptOwnerStreet2>10514 DUPONT AVENUE</rptOwnerStreet2>
            <rptOwnerCity>CLEVELAND</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44108</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.925</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2011-02-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2021-02-24</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6000</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Granted pursuant to the Hickok Incorporated 2010 Outside Directors Stock Option Plan which complies with Rule 16b-3. These optios become exercisable in equal 33% increments over three years beginning on the first anniversary of the date of the grant.</footnote>
        <footnote id="F2">The reporting person still holds previously reported options to buy 5,000 Class A Common Shares granted pursuant to the Hickok Incorporated 2003 Outside Directors Stock Option Plan, the Hickok Incorporated 2007 Outside Directors Stock Option Plan and the Hickok Incorporated 2010 Outside Directors Stock Option Plan. All these plans comply with Rule 16b-3. Thses options were granted between February 23, 2006 and February 25, 2010 at exercise prices ranging from $2.925 to $11.00, become or became exercisable between February 23, 2007 and February 25, 2013, and will expire between February 23, 2016 and February 25, 2020.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ T. Harold Hudson</signatureName>
        <signatureDate>2011-03-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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