<SEC-DOCUMENT>0001398344-25-020888.txt : 20251114
<SEC-HEADER>0001398344-25-020888.hdr.sgml : 20251114
<ACCEPTANCE-DATETIME>20251114090022
ACCESSION NUMBER:		0001398344-25-020888
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251114
DATE AS OF CHANGE:		20251114

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARMSTRONG WORLD INDUSTRIES INC
		CENTRAL INDEX KEY:			0000007431
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS PRODUCTS, NEC [3089]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				230366390
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-30703
		FILM NUMBER:		251481614

	BUSINESS ADDRESS:	
		STREET 1:		2500 COLUMBIA AVE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603
		BUSINESS PHONE:		7173970611

	MAIL ADDRESS:	
		STREET 1:		2500 COLUMBIA AVE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARMSTRONG CORK CO
		DATE OF NAME CHANGE:	19800611

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LONDON CO OF VIRGINIA
		CENTRAL INDEX KEY:			0001259887
		ORGANIZATION NAME:           	
		EIN:				900824693
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1800 BAYBERRY COURT
		STREET 2:		SUITE 301
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23226
		BUSINESS PHONE:		804 775 0317

	MAIL ADDRESS:	
		STREET 1:		1800 BAYBERRY COURT
		STREET 2:		SUITE 301
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23226
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>SCHEDULE 13G/A</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <!-- Field: Pseudo-Tag; ID: Name; Data: LONDON CO OF VIRGINIA -->
          <cik>0001259887</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>5</amendmentNo>
      <securitiesClassTitle>Common Stock, with no par value</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>09/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0000007431</issuerCik>
        <issuerName>ARMSTRONG WORLD INDUSTRIES INC</issuerName>
        <issuerCusip>042384107</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>2500 COLUMBIA AVE</com:street1>
          <com:city>LANCASTER</com:city>
          <com:stateOrCountry>PA</com:stateOrCountry>
          <com:zipCode>17603</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>The London Company</reportingPersonName>
      <citizenshipOrOrganization>VA</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>2135597.00</soleVotingPower>
        <sharedVotingPower>0.00</sharedVotingPower>
        <soleDispositivePower>2065166.00</soleDispositivePower>
        <sharedDispositivePower>3733.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>2135597.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>4.94</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>ARMSTRONG WORLD INDUSTRIES INC</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>2500 COLUMBIA AVE, LANCASTER, PA, 17603</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>The London Company</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>1800 Bayberry Court, Suite 301, Richmond, Virginia 23226</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Virginia</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>2135597</amountBeneficiallyOwned>
        <classPercent>4.94</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>2135597</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>2065166</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>3733</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>N</notApplicableFlag>
        <classOwnership5PercentOrLess>Y</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>The London Company</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Andrew J. Wetzel</signature>
        <title>Andrew J. Wetzel, Chief Compliance Officer</title>
        <date>11/14/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
