<SEC-DOCUMENT>0000937098-18-000178.txt : 20181119
<SEC-HEADER>0000937098-18-000178.hdr.sgml : 20181119
<ACCEPTANCE-DATETIME>20181119203552
ACCESSION NUMBER:		0000937098-18-000178
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20181115
FILED AS OF DATE:		20181119
DATE AS OF CHANGE:		20181119

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Murphy Michael P
		CENTRAL INDEX KEY:			0001704736

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36373
		FILM NUMBER:		181194038

	MAIL ADDRESS:	
		STREET 1:		1100 SAN LEANDRO BLVD.
		STREET 2:		SUITE 400
		CITY:			SAN LEANDRO
		STATE:			CA
		ZIP:			94577

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRINET GROUP INC
		CENTRAL INDEX KEY:			0000937098
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				953359658
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE PARK PLACE., SUITE 600
		CITY:			DUBLIN
		STATE:			CA
		ZIP:			94568
		BUSINESS PHONE:		5103525000

	MAIL ADDRESS:	
		STREET 1:		ONE PARK PLACE., SUITE 600
		CITY:			DUBLIN
		STATE:			CA
		ZIP:			94568

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TRINET EMPLOYER GROUP INC
		DATE OF NAME CHANGE:	20000126
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4
<TEXT>
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

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    <periodOfReport>2018-11-15</periodOfReport>

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    <issuer>
        <issuerCik>0000937098</issuerCik>
        <issuerName>TRINET GROUP INC</issuerName>
        <issuerTradingSymbol>TNET</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001704736</rptOwnerCik>
            <rptOwnerName>Murphy Michael P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TRINET GROUP, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE PARK PLACE, SUITE 600</rptOwnerStreet2>
            <rptOwnerCity>DUBLIN</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94568</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>PRINCIPAL ACCOUNTING OFFICER</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-11-15</value>
            </transactionDate>
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                <transactionFormType>5</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
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            <transactionAmounts>
                <transactionShares>
                    <value>258</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>38.21</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22856</value>
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            </postTransactionAmounts>
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                    <value>D</value>
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                <equitySwapInvolved>0</equitySwapInvolved>
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        <derivativeTransaction>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
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                    <value>D</value>
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            <expirationDate>
                <footnoteId id="F4"/>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5000.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
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                </sharesOwnedFollowingTransaction>
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                    <value>D</value>
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                <value>Restricted Stock Units</value>
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                    <value>278</value>
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            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2504</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These shares were acquired under the TriNet Group, Inc 2014 Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(c) and Rule 16b-3(d).</footnote>
        <footnote id="F2">Restricted Stock Units convert into common stock on a one-for-one basis.</footnote>
        <footnote id="F3">These shares represent shares withheld for satisfaction of a tax withholding obligation arising as a result of the vesting of the Restricted Stock Units.</footnote>
        <footnote id="F4">On August 7, 2016, the Reporting Person was granted 80,000 Restricted Stock Units, subject to a 4-year vesting schedule: one-fourth of the total number of shares vesting on the first anniversary of the grant date, and thereafter one-sixteenth of the total number of shares vesting quarterly on the 15th day of the second month of each calendar quarter following the grant date. The Restricted Stock Units are also subject to accelerated vesting upon certain events.</footnote>
        <footnote id="F5">On March 24, 2017, the Reporting Person was granted 4,450 Restricted Stock Units, subject to a 4-year vesting schedule: one-sixteenth of the total number of shares vesting quarterly on the 15th day of the second month of each calendar quarter following the grant date. The Restricted Stock Units are also subject to accelerated vesting upon certain events.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Helen Hong, Attorney-in-fact</signatureName>
        <signatureDate>2018-11-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
