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<?xml version="1.0" encoding="windows-1252"?> |
<ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2021-04-03 </periodOfReport> |
| <notSubjectToSection16> 1 </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0000945114 </issuerCik> |
| | <issuerName> SYSTEMAX INC </issuerName> |
| | <issuerTradingSymbol> SYX </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001243716 </rptOwnerCik> |
| | | <rptOwnerName> DOOLEY ROBERT </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> C/O SYSTEMAX INC. </rptOwnerStreet1> |
| | | <rptOwnerStreet2> 11 HARBOR PARK DRIVE </rptOwnerStreet2> |
| | | <rptOwnerCity> PORT WASHINGTON </rptOwnerCity> |
| | | <rptOwnerState> NY </rptOwnerState> |
| | | <rptOwnerZipCode> 11050 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 0 </isDirector> |
| | | <isOfficer> 0 </isOfficer> |
| | | <isTenPercentOwner> 0 </isTenPercentOwner> |
| | | <isOther> 1 </isOther> |
| | | <officerTitle></officerTitle> |
| | | <otherText> Former Pres, Indtrl Prod Grp </otherText> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2021-04-03 </value> |
| </transactionDate> |
| | | <transactionCoding> |
| <transactionFormType> 5 </transactionFormType> |
| <transactionCode> A </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness> |
| <value> E </value> |
| </transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 5000 </value> |
| <footnoteId id="F1"/> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 0 </value> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 91198 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2021-04-03 </value> |
| </transactionDate> |
| | | <transactionCoding> |
| <transactionFormType> 5 </transactionFormType> |
| <transactionCode> F </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness> |
| <value> E </value> |
| </transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 2449 </value> |
| <footnoteId id="F2"/> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 42.37 </value> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> D </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 88749 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | </nonDerivativeTable> |
| <derivativeTable></derivativeTable> |
| <footnotes> |
| | <footnote id="F1"> Shares of common stock issued upon vesting of restricted stock units in accordance with the terms of a Restricted Stock Unit award originally granted on March 1, 2012 (the "2012 Restrictive Award"). </footnote> |
| | <footnote id="F2"> Shares surrendered for payment of tax liability incident to vesting of the 2012 Restrictive Award. </footnote> |
| | </footnotes> |
| <remarks> The Reporting Person retired from the Issuer effective April 3, 2021, and he is no longer subject to Section 16 filing obligations. </remarks> |
| <ownerSignature> |
| | <signatureName> /s/ Robert Dooley </signatureName> |
| | <signatureDate> 2021-04-06 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |