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| <?xml version="1.0" encoding="windows-1252"?> |
| <ownershipDocument> |
| <schemaVersion> X0508 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2024-03-18 </periodOfReport> |
| <notSubjectToSection16> false </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0000031107 </issuerCik> |
| | <issuerName> EASTERN CO </issuerName> |
| | <issuerTradingSymbol> EML </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001237393 </rptOwnerCik> |
| | | <rptOwnerName> MARDY MICHAEL J </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> 3 ENTERPRISE DRIVE </rptOwnerStreet1> |
| | | <rptOwnerStreet2> SUITE 408 </rptOwnerStreet2> |
| | | <rptOwnerCity> SHELTON </rptOwnerCity> |
| | | <rptOwnerState> CT </rptOwnerState> |
| | | <rptOwnerZipCode> 06484 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> true </isDirector> |
| | | <isOfficer> false </isOfficer> |
| | | <isTenPercentOwner> false </isTenPercentOwner> |
| | | <isOther> false </isOther> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <aff10b5One> false </aff10b5One> |
| <nonDerivativeTable> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Common Shares </value> |
| <footnoteId id="F1"/> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2024-03-18 </value> |
| </transactionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> A </transactionCode> |
| <equitySwapInvolved> false </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 701 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 28.52 </value> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 10846 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | </nonDerivativeTable> |
| <footnotes> |
| | <footnote id="F1"> 701 shares acquired under The Eastern Company Director's Fees Program pursuant to Rule 16b-3(d). The price used to determine the number of shares is the price of the shares on March 15, 2024. </footnote> |
| | </footnotes> |
| <ownerSignature> |
| | <signatureName> /s/ Michael J. Mardy </signatureName> |
| | <signatureDate> 2024-03-19 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |
