<SEC-DOCUMENT>0000007431-26-000062.txt : 20260615
<SEC-HEADER>0000007431-26-000062.hdr.sgml : 20260615
<ACCEPTANCE-DATETIME>20260615165234
ACCESSION NUMBER:		0000007431-26-000062
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20260612
FILED AS OF DATE:		20260615
DATE AS OF CHANGE:		20260615

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TEMPLIN ROY W
		CENTRAL INDEX KEY:			0001047391
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02116
		FILM NUMBER:		261091589

	MAIL ADDRESS:	
		STREET 1:		ARMSTRONG WORLD INDUSTRIES, INC.
		STREET 2:		2500 COLUMBIA AVENUE
		CITY:			LANCASTER
		STATE:			PA
		ZIP:			17603

ISSUER:		

	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

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-06-12</periodOfReport>

    <issuer>
        <issuerCik>0000007431</issuerCik>
        <issuerName>ARMSTRONG WORLD INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>AWI</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001047391</rptOwnerCik>
            <rptOwnerName>TEMPLIN ROY W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O ARMSTRONG WORLD INDUSTRIES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2500 COLUMBIA AVENUE</rptOwnerStreet2>
            <rptOwnerCity>LANCASTER</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>17603</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2026-06-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1265</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20716</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Restricted stock units granted under the 2016 Directors Stock Unit Plan (the &quot;2016 Plan&quot;), and as part of the Issuer's nonemployee Director Compensation Program. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the next annual shareholders meeting following the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control (as defined in the 2016 Plan).  Vested units will be acquirable by the Director, at the election of the Director: (i) at the vesting of the units on the date of the next annual shareholders meeting following the grant or (ii) at the time of the Director's termination of service.</footnote>
        <footnote id="F2">Represents an annual grant of restricted stock units as the equity portion of the Director's retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on June 12, 2026, which price was $154.21.</footnote>
        <footnote id="F3">Includes vested and unvested units as well as units not yet acquirable by the Director. Under the terms of the 2016 Plan, vested units under the 2016 Plan are not acquirable by the Director until, at the election of the Director: (i) the vesting of the units on the date of the next annual shareholders meeting following the grant or (ii) the time of the Director's termination of service.</footnote>
    </footnotes>

    <remarks>See Exhibit 24 - Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Alan M. Kidd, Attorney-in-fact</signatureName>
        <signatureDate>2026-06-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>doc1.txt
<DESCRIPTION>POWER OF ATTORNEY (PUBLIC): POA DOCUMENT
<TEXT>
POWER OF ATTORNEY

      Know all persons by these presents, that the undersigned hereby
      constitutes and appoints each of Jessica M. Cicali and Alan M. Kidd of
      Armstrong World Industries, Inc., or any of them acting individually, and
      with full power of substitution, the undersigned?s true and lawful
      attorney-in-fact to:

      1. execute for and on behalf of the undersigned, in the undersigned's
         capacity as an officer and/or director of Armstrong World Industries,
         Inc. (the "Company"), Forms 3, 4 and 5 (including amendments thereto)
         in accordance with Section 16(a) of the Securities Exchange Act of
         1934 and the rules and regulations thereunder and a Form ID, Uniform
         Application for Access Codes to File on Edgar, including any amendment
         thereto, and any other documents necessary or appropriate to obtain
         and maintain codes, passwords, and passphrases enabling the
         undersigned to make electronic filings with the United States
         Securities and Exchange Commission; and to act as an Account
         Administrator (as defined in the EDGAR Filer Manual) for the
         undersigned?s EDGAR account with full authority to manage users,
         update account information, and perform all administrative functions
         on the EDGAR system;

      2. do and perform any and all acts for and on behalf of the undersigned
         which may be necessary or desirable to complete and execute any such
         Forms 3, 4 or 5 or Form ID and timely file such forms (including
         amendments thereto) and application with the United States Securities
         and Exchange Commission and any stock exchange or similar authority;
         and

      3. take any other action of any type whatsoever in connection with the
         foregoing which, in the opinion of such attorney-in-fact, may be of
         benefit to, in the best interest of, or legally required by, the
         undersigned, it being understood that the documents executed by such
         attorney-in-fact on behalf of the undersigned pursuant to this Power
         of Attorney shall be in such form and shall contain such terms and
         conditions as such attorney-in-fact may approve in such attorney-
         in-fact's discretion.

      The undersigned hereby grants to each such attorney-in-fact full power
      and authority to do and perform any and every act and thing whatsoever
      requisite, necessary, or proper to be done in the exercise of any of the
      rights and powers herein granted, as fully to all intents and purposes as
      the undersigned might or could do if personally present, with full power
      of substitution or revocation, hereby ratifying and confirming all that
      such attorney-in-fact, or such attorney-in-fact?s substitute or
      substitutes, shall lawfully do or cause to be done by virtue of this
      power of attorney and the rights and powers herein granted. The
      undersigned acknowledges that the foregoing attorneys-in-fact, in serving
      in such capacity at the request of the undersigned, are not assuming any
      of the undersigned?s responsibilities to comply with Section 16 of the
      Securities Exchange Act of 1934.

      This Power of Attorney supersedes any power of attorney previously
      executed by the undersigned regarding the purposes outlined in the first
      paragraph hereof ("Prior Powers of Attorney"), and the authority of the
      attorneys-in-fact named in any Prior Powers of Attorney is hereby revoked.

      This Power of Attorney shall remain in full force and effect until the
      undersigned is no longer required to file Forms 3, 4 or 5 with respect to
      the undersigned's holdings of and transactions in securities issued by
      the Company, unless earlier (a) revoked by the undersigned in a signed
      writing delivered to the foregoing attorneys-in-fact or (b) superseded by
      a new power of attorney regarding the purposes outlined in the first
      paragraph hereof dated as of a later date.

      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
      be executed as of this 24th day of April, 2026.






/s/ Roy W. Templin
Name:
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
