<SEC-DOCUMENT>0001127602-18-019523.txt : 20180601
<SEC-HEADER>0001127602-18-019523.hdr.sgml : 20180601
<ACCEPTANCE-DATETIME>20180601163109
ACCESSION NUMBER:		0001127602-18-019523
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180530
FILED AS OF DATE:		20180601
DATE AS OF CHANGE:		20180601

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ARIZPE ARTHUR A
		CENTRAL INDEX KEY:			0001055604

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13998
		FILM NUMBER:		18875480

	MAIL ADDRESS:	
		STREET 1:		19001 CRESCENT SPRINGS DR
		STREET 2:		C/O INSPERITY
		CITY:			KINGWOOD
		STATE:			TX
		ZIP:			77339

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INSPERITY, INC.
		CENTRAL INDEX KEY:			0001000753
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-HELP SUPPLY SERVICES [7363]
		IRS NUMBER:				760479645
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		19001 CRESCENT SPRINGS DR
		CITY:			KINGWOOD
		STATE:			TX
		ZIP:			77339
		BUSINESS PHONE:		7133588986

	MAIL ADDRESS:	
		STREET 1:		19001 CRESCENT SPRINGS DR
		CITY:			KINGWOOD
		STATE:			TX
		ZIP:			77339

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ADMINISTAFF INC \DE\
		DATE OF NAME CHANGE:	19950915
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-05-30</periodOfReport>

    <issuer>
        <issuerCik>0001000753</issuerCik>
        <issuerName>INSPERITY, INC.</issuerName>
        <issuerTradingSymbol>NSP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001055604</rptOwnerCik>
            <rptOwnerName>ARIZPE ARTHUR A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>19001 CRESCENT SPRINGS DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>KINGWOOD</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77339</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>EVP of Client Services and COO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-05-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6684</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>92.30</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>23498</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>129808</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Arizpe Investment Limited Partnership</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares are owned directly by Arizpe Investment Limited Partnership, which is controlled by Arizpe Management.  Mr. Arizpe, by virtue of his position as Manager of Arizpe Management, may be deemed to beneficially own these shares.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Christian P. Callens, by Power of Attorney</signatureName>
        <signatureDate>2018-06-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
