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| <?xml version="1.0" encoding="windows-1252"?> |
| <ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2022-09-28 </periodOfReport> |
| <notSubjectToSection16> 0 </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0001050825 </issuerCik> |
| | <issuerName> STEELCASE INC </issuerName> |
| | <issuerTradingSymbol> NYSE: SCS </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001360597 </rptOwnerCik> |
| | | <rptOwnerName> Armbruster Sara E </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> STEELCASE INC. </rptOwnerStreet1> |
| | | <rptOwnerStreet2> 901 44TH ST SE </rptOwnerStreet2> |
| | | <rptOwnerCity> GRAND RAPIDS </rptOwnerCity> |
| | | <rptOwnerState> MI </rptOwnerState> |
| | | <rptOwnerZipCode> 49508 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 1 </isDirector> |
| | | <isOfficer> 1 </isOfficer> |
| | | <isTenPercentOwner> 0 </isTenPercentOwner> |
| | | <isOther> 0 </isOther> |
| | | <officerTitle> President and CEO </officerTitle> |
| | | <otherText></otherText> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeTransaction> |
| | | <securityTitle> |
| <value> Class A Common Stock </value> |
| </securityTitle> |
| | | <transactionDate> |
| <value> 2022-09-28 </value> |
| </transactionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> P </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 5735 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 6.8289 </value> |
| <footnoteId id="F1"/> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 498511 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeTransaction> |
| | </nonDerivativeTable> |
| <derivativeTable></derivativeTable> |
| <footnotes> |
| | <footnote id="F1"> The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.80 to $6.86, inclusive. The reporting person undertakes to provide to Steelcase Inc., any security holder of Steelcase Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. </footnote> |
| | </footnotes> |
| <remarks></remarks> |
| <ownerSignature> |
| | <signatureName> Liesl A. Maloney, by power of attorney </signatureName> |
| | <signatureDate> 2022-09-28 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |
