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<?xml version="1.0" encoding="windows-1252"?> |
<ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2022-05-20 </periodOfReport> |
| <notSubjectToSection16> 0 </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0001136294 </issuerCik> |
| | <issuerName> Williams Industrial Services Group Inc. </issuerName> |
| | <issuerTradingSymbol> WLMS </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001112508 </rptOwnerCik> |
| | | <rptOwnerName> BROWN DAVID A B </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> C/O WILLIAMS INDUSTRIAL SRVS GRP INC. </rptOwnerStreet1> |
| | | <rptOwnerStreet2> 200 ASHFORD CENTER NORTH STE 425 </rptOwnerStreet2> |
| | | <rptOwnerCity> ATLANTA </rptOwnerCity> |
| | | <rptOwnerState> GA </rptOwnerState> |
| | | <rptOwnerZipCode> 30338 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 1 </isDirector> |
| | | <isOfficer> 0 </isOfficer> |
| | | <isTenPercentOwner> 0 </isTenPercentOwner> |
| | | <isOther> 0 </isOther> |
| | | <officerTitle></officerTitle> |
| | | <otherText></otherText> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock, $0.01 par value per share </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2022-05-20 </value> |
| </transactionDate> |
| | | <deemedExecutionDate></deemedExecutionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> P </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness></transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 8717 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 1.5991 </value> |
| <footnoteId id="F1"/> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 721710 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock, $0.01 par value per share </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2022-05-23 </value> |
| </transactionDate> |
| | | <deemedExecutionDate></deemedExecutionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> P </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness></transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 24836 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 1.7238 </value> |
| <footnoteId id="F2"/> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 746546 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Stock, $0.01 par value per share </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2022-05-24 </value> |
| </transactionDate> |
| | | <deemedExecutionDate></deemedExecutionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> P </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness></transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 3200 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 1.7525 </value> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 749746 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | </nonDerivativeTable> |
| <footnotes> |
| | <footnote id="F1"> Represents the weighted average purchase price of multiple transactions, with shares purchased at prices ranging from $1.585 to $1.60 per share. The reporting person hereby undertakes to provide, upon request by the U.S. Securities and Exchange Commission staff, the issuer or a stockholder of the issuer, full information regarding the number of shares purchased at each separate price. </footnote> |
| | <footnote id="F2"> Represents the weighted average purchase price of multiple transactions, with shares purchased at prices ranging from $1.60 to $1.75 per share. The reporting person hereby undertakes to provide, upon request by the U.S. Securities and Exchange Commission staff, the issuer or a stockholder of the issuer, full information regarding the number of shares purchased at each separate price. </footnote> |
| | </footnotes> |
| <ownerSignature> |
| | <signatureName> /s/ Charles E. Wheelock for David A. B. Brown by Power of Attorney </signatureName> |
| | <signatureDate> 2022-05-24 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |