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<?xml version="1.0" encoding="windows-1252"?> |
<ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2017-09-11 </periodOfReport> |
| <notSubjectToSection16> 0 </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0001500217 </issuerCik> |
| | <issuerName> American Assets Trust, Inc. </issuerName> |
| | <issuerTradingSymbol> AAT </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001221359 </rptOwnerCik> |
| | | <rptOwnerName> RADY ERNEST S </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> 11455 EL CAMINO REAL </rptOwnerStreet1> |
| | | <rptOwnerStreet2> SUITE 200 </rptOwnerStreet2> |
| | | <rptOwnerCity> SAN DIEGO </rptOwnerCity> |
| | | <rptOwnerState> CA </rptOwnerState> |
| | | <rptOwnerZipCode> 92130 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 1 </isDirector> |
| | | <isOfficer> 1 </isOfficer> |
| | | <isTenPercentOwner> 1 </isTenPercentOwner> |
| | | <isOther> 0 </isOther> |
| | | <officerTitle> Chairman, CEO & President </officerTitle> |
| | | <otherText></otherText> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock, par value $0.01 </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2017-09-11 </value> |
| </transactionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> P </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 1010 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 40.79 </value> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 1117685 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> By AAI </value> |
| <footnoteId id="F1"/> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> Common Stock, par value $0.01 </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 4865718 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> By ERT </value> |
| <footnoteId id="F2"/> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> Common Stock, par value $0.01 </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 624572 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> By ICW </value> |
| <footnoteId id="F3"/> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> Common Stock, par value $0.01 </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 597341 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> By RFF </value> |
| <footnoteId id="F4"/> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> Common Stock, par value $0.01 </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 200000 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> By EIC </value> |
| <footnoteId id="F5"/> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> Common Stock, par value $0.01 </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 27000 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> By ESRT </value> |
| <footnoteId id="F6"/> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> Common Stock, par value $0.01 </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 133675 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| <footnoteId id="F7"/> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | </nonDerivativeTable> |
| <derivativeTable></derivativeTable> |
| <footnotes> |
| | <footnote id="F1"> Represents shares held by American Assets, Inc. ("AAI"), which is directly controlled by the Reporting Person. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein. </footnote> |
| | <footnote id="F2"> Represents shares held by Ernest Rady Trust U/D/T March 10, 1983 ("ERT"), for which the Reporting Person is the trustee. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein. </footnote> |
| | <footnote id="F3"> Represents shares held by Insurance Company of the West ("ICW"), which is directly controlled by the Reporting Person. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein. </footnote> |
| | <footnote id="F4"> Represents shares held by Rady Family Foundation dated August 2, 2002 ("RFF"), for which the Reporting Person is the trustee. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein. </footnote> |
| | <footnote id="F5"> Represents shares held by Explorer Insurance Company ("EIC"), which is directly controlled by the Reporting Person. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein. </footnote> |
| | <footnote id="F6"> Represents shares held by Evelyn Shirley Rady Trust U/D/T March 10, 1983 ("ESRT"), for which the Reporting Person is the trustee. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein. </footnote> |
| | <footnote id="F7"> Amount includes (a) 52,500 shares held by Ernest Rady IRA and (b) 81,175 shares of restricted common stock issued pursuant to the American Assets Trust, Inc. and American Assets Trust, L.P. 2011 Equity Incentive Award Plan. </footnote> |
| | </footnotes> |
| <remarks></remarks> |
| <ownerSignature> |
| | <signatureName> /s/ Adam Wyll, Attorney-in-fact </signatureName> |
| | <signatureDate> 2017-09-12 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |