8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 27, 2021

ARMSTRONG WORLD INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

Pennsylvania	1-2116	23-0366390
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(IRS Employer Identification No.)
2500 Columbia Avenue P.O. Box 3001 Lancaster, Pennsylvania		17603
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (717) 397-0611

NA

(Former name or former address if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value per share	AWI	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻

Section 1 – Registrant’s Business and Operations

Item 1.01 Entry into a Material Definitive Agreement.

On July 16, 2021, the Nominating, Governance and Social Responsibility Committee of the Board of Directors (the “Board”) of Armstrong World Industries, Inc. (the “Company”) approved an updated form of indemnification agreement (the “Indemnification Agreement”) to be entered into between the Company and its current and future directors and executive officers. The Company will execute new Indemnification Agreements with each of its directors and executive officers, which will replace and supersede any previous indemnification agreements between such parties.

The Indemnification Agreement will, among other things, require the Company to indemnify, and advance expenses to, each director and executive officer to the fullest extent permitted by law, including indemnification of expenses such as attorney’s fees, judgments, fines, penalties, interest, appeal bonds and settlement amounts incurred by the director or executive officer in any action or proceeding arising out of such person’s services as a director or executive officer of the Company and such person’s service, at the request of the Company, as a director, officer, or employee of another entity. The Indemnification Agreements are intended to provide indemnification rights to the fullest extent permitted under Pennsylvania law and shall be in addition to any other rights the directors and executive officers may have under the Company’s articles of incorporation and bylaws.

The foregoing description of the Indemnification Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the form of Indemnification Agreement, which is attached as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.

Section 2 - Financial Information

Item 2.02 Results of Operations and Financial Condition.

On July 27, 2021, the Company issued a press release announcing its second quarter 2021 consolidated financial results. The full text of the press release is attached hereto as Exhibit 99.1.

The information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1, is being furnished herewith and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (the “Act”), or the Exchange Act, except as expressly set forth by specific reference in such filing.

Section 7 – Regulation FD

Item 7.01 Regulation FD Disclosure.

On July 27, 2021, the Company issued a press release announcing that it will report its second quarter 2021 consolidated financial results via a webcast and conference call on July 27, 2021 at 10:00 a.m. Eastern Time which can be accessed through the “Investors” section of the Company’s website, www.armstrongceilings.com. During this report, the Company will reference a slide presentation, a copy of which is attached hereto as Exhibit 99.2 and incorporated herein by reference.

The information in Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.2, is being furnished herewith and shall not be deemed “filed” for the purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing under the Act, or the Exchange Act, except as expressly set forth by specific reference in such filing.

Caution Concerning Forward-Looking Statements

This Current Report on Form 8-K includes certain forward-looking statements within the meaning of Section 27A of the Securities Act, and Section 21E of the Exchange Act. Such forward-looking statements include, but are not limited to, statements about the plans, objectives, expectations and intentions of the Company, including the

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consummation of the Sale, and other statements that are not historical facts. These statements are based on the current expectations and beliefs of the Company’s management, and are subject to uncertainty and changes in circumstances. The Company cautions readers that any forward-looking information is not a guarantee of future performance and that actual results may vary materially from those expressed or implied by the statements herein, due to changes in economic, business, competitive, technological, strategic or other regulatory factors, as well as factors affecting the operation of the business of the Company. More detailed information about certain of these and other factors may be found in filings by the Company with the U.S. Securities and Exchange Commission, including its most recent Annual Report on Form 10-K in the sections entitled “Caution Concerning Forward-Looking Statements” and “Risk Factors”, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K. Various factors could cause actual results to differ from those set forth in the forward-looking statements including, without limitation, the risk that the anticipated benefits from the Sale may not be fully realized or may take longer to realize than expected. The Company is under no obligation to, and expressly disclaims any obligation to, update or alter the forward-looking statements contained in this document, whether as a result of new information, future events or otherwise.

Section 9 – Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits
 

No. 10.1	Form of Indemnification Agreement for Officers and Directors of Armstrong World Industries, Inc.
No. 99.1	Press Release of Armstrong World Industries, Inc. dated July 27, 2021
No. 99.2	Earnings Call Presentation Second Quarter 2021 dated July 27, 2021
No. 104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

ARMSTRONG WORLD INDUSTRIES, INC.
By:	/s/ Mark A. Hershey
	Mark A. Hershey
	Senior Vice President, General Counsel, Secretary and Chief Compliance Officer

Date: July 27, 2021

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EX-10.1

Exhibit 10.1

INDEMNIFICATION AGREEMENT FOR
DIRECTORS AND OFFICERS OF ARMSTRONG WORLD INDUSTRIES, INC.

This Indemnification Agreement is made and effective as of the ____ day of _____, _____, by and between Armstrong World Industries, Inc., a Pennsylvania corporation (the "Corporation") and _________________________ ("Indemnitee").

WHEREAS, it is essential to the Corporation that the Corporation retain and attract as directors and officers the most capable persons available; and

WHEREAS, Indemnitee is an officer and/or a member of the Board of Directors of the Corporation (the "Board") and in that capacity is performing a valuable service for the Corporation; and

WHEREAS, both the Corporation and Indemnitee recognize the increased risk of litigation and other claims being asserted against directors or officers of public companies; and

WHEREAS the Corporation has purchased and maintains one or more policies of Directors and Officers Liability Insurance ("D&O Insurance") covering certain liabilities which may be incurred by directors and officers in their performance of services for the Corporation; and

WHEREAS, the Corporation has provisions in both its Articles of Incorporation and its Bylaws (together referred to herein as the "Bylaws") that provide for indemnification and advancement of Expenses (as defined below) to the officers and directors of the Corporation to the fullest extent permitted by Pennsylvania law, and the Bylaws and the applicable indemnification statutes of the Commonwealth of Pennsylvania provide that they are not exclusive; and

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WHEREAS, Indemnitee serves as a director or officer of the Corporation, in part, in reliance on such provisions in the Bylaws; and

WHEREAS, the Corporation has determined that its inability to retain and attract as directors and officers the most capable persons would be detrimental to the interests of the Corporation and that the Corporation therefore should seek to assure such persons that indemnification and insurance coverage will be available in the future; and

WHEREAS, in recognition of Indemnitee's need for substantial protection against personal liability and in order to induce and retain Indemnitee's service to the Corporation, the Corporation wishes to provide Indemnitee with substantial protection against personal liability in addition to the protections afforded under the Bylaws, and to provide Indemnitee with specific contractual assurance that the protection promised by the Bylaws will be available to Indemnitee (regardless of, among other things, any amendment to or revocation of the Bylaws, any change in the composition of the Board or the composition of the governing body of any applicable Other Enterprise (as defined below) or any acquisition transaction relating to the Corporation); and

WHEREAS, the Corporation wishes to provide in this Agreement for the indemnification of and the advancement of Expenses to Indemnitee to the fullest extent (whether partial or complete) permitted by applicable law, and as set forth in this Agreement, and, to the extent D&O Insurance is maintained, for the continued coverage of Indemnitee under such D&O Insurance; and

NOW, THEREFORE, in consideration of the foregoing and of Indemnitee's agreement to serve or Indemnitee's willingness to continue to serve the Corporation directly on its behalf or at its request as an officer, director, manager, member, partner,

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tax matters partner, fiduciary, or trustee of, or in any other capacity with, another individual, domestic or foreign corporation for profit or not-for-profit, partnership, joint venture, limited liability company, estate,trust, business association, organization, governmental entity or other entity, any employee benefit plan, the Armstrong Foundation or other enterprise (each, an "Other Enterprise"), and intending to be legally bound hereby, the parties hereto agree as follows:

1. Indemnification and Advancement.

(a)The Corporation shall, to the fullest extent permitted by Pennsylvania law in effect on the date hereof and as amended from time to time, indemnify and hold harmless Indemnitee, or cause Indemnitee to be indemnified and held harmless, against (i) any and all liabilities, Expenses, damages, judgments, fines, penalties, ERISA excise taxes, and amounts paid in settlement (including all interest, assessments, and other charges paid or payable in connection with or in respect of such liabilities, Expenses, damages, judgments, fines, penalties, Employee Retirement Income Security Act of 1974, as amended ("ERISA"), excise taxes, or amounts paid in settlement), (ii) any liability pursuant to a loan, guaranty or otherwise, for any indebtedness of the Corporation or any subsidiary of the Corporation, including, without limitation, any indebtedness that the Corporation or any subsidiary of the Corporation has assumed or taken subject to, and (iii) any liability that an Indemnitee incurs as a result of acting on behalf of the Corporation (whether as a fiduciary or otherwise) in connection with the operation, administration, or maintenance of an employee benefit plan or any related trust or funding mechanism (whether such liability is in the form of an excise tax assessed by the United States Internal Revenue Service, a penalty assessed by the Department of Labor, restitution to such a plan or trust or other funding

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mechanism or to a participant or beneficiary of such plan, trust, or other funding mechanism, or otherwise ((i) through (iii) collectively, the "Indemnifiable Amounts"), in each case,that are incurred or paid by Indemnitee in connection with any threatened, potential, asserted, pending, or completed action, suit, proceeding or matter, whether civil, criminal, administrative or investigative, or other action, suit, or proceeding of any kind whatsoever, including any arbitration or other alternative dispute resolution mechanism, or any appeal of any kind thereof, or any inquiry or investigation, whether instituted by the Corporation, any governmental agency, or any other party, that Indemnitee in good faith believes might lead to the institution of any such proceeding (each, a "Proceeding"), whether or not such Proceeding is brought by or in the right of the Corporation or otherwise, to which Indemnitee is, was or at any time becomes a party, or is threatened to be made a party or is involved (as a witness or otherwise) by reason of the fact that Indemnitee is or was a director or officer of the Corporation or is or was serving, at the request of the Corporation, as a director, officer, trustee or representative of an Other Enterprise, whether acting in an official capacity or in any other capacity (collectively the foregoing is herein referred to as "Corporate Service");provided, that no change in Pennsylvania law shall have the effect of reducing the benefits available to Indemnitee hereunder based on Pennsylvania law as in effect on the date hereof or as such benefits may improve as a result of amendments to Pennsylvania law that become effective after the date hereof.  Notwithstanding the foregoing, the Corporation shall not indemnify Indemnitee (i) if the act or omission giving rise to the claimfor indemnification by Indemnitee is determined by a final adjudication of a court of competent jurisdiction to have constituted willful misconduct or

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recklessness or otherwise failed to meet the standard of conduct required for Indemnitee to be indemnified by the Corporation under applicable Pennsylvania lawor (ii) in connection with any damages or disgorgement or other accounting of profits from an actual violation of Section 16(b) of the Securities Exchange Act of 1934.

(b)Advancement of Expenses.  The Corporation shall, to the fullest extent permitted by Pennsylvania law, advance or cause to be advanced, on a current and as-incurred basis, any and all Expenses actually incurred by Indemnitee in connection with any Proceeding brought against Indemnitee by reason of Indemnitee's Corporate Service, in advance of the final disposition thereof.  The Corporation shall make, or cause to be made, all such advances promptly after receipt by the Corporation of a written request therefor stating in reasonable detail the Expenses incurred.  To the fullest extent permitted by Pennsylvania law, Indemnitee’s right to advancement of Expenses is absolute and shall not be subject to any prior determination that Indemnitee has satisfied any applicable standard of conduct for indemnification. Such advances (i) shall be unsecured and interest free; (ii) shall be made without regard to Indemnitee's ability to repay the advances and without regard to Indemnitee's ultimate entitlement to indemnification under the other provisions of this Agreement; and (iii) shall include any and all Expenses actually incurred pursuing an action to enforce any right of advancement or indemnification under this Agreement, including Expenses actually incurred preparing and forwarding statements to the Corporation to support the advances claimed.  Indemnitee hereby undertakes to repay any amounts advanced (without interest) to the extent it is ultimately determined that Indemnitee is not entitled under this Agreement to be indemnified by the Corporation in respect thereof.  No other

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form of undertaking shall be required of Indemnitee other than execution of this Agreement.  If Indemnitee commences legal proceedings in a court of competent jurisdiction to secure a determination that Indemnitee should be indemnified under applicable law, then Indemnitee shall not be required to reimburse the Corporation for any Expensesadvancedby the Corporation until a final judicial determination is made with respect thereto.As used herein, "Expenses" shall mean all direct or indirect costs, expenses, and obligations, including attorneys’ fees, judgments, fines, penalties, interest, appeal bonds, amounts paid in settlement with the approval of the Board, and counsel fees and disbursements (including, without limitation, experts’ fees, court costs, retainers, appeal bond premiums, transcript fees, duplicating, printing, and binding costs, as well as telecommunications, postage, and courier charges), paid or incurred in connection with investigating, prosecuting, defending, being a witness in, or participating in (including on appeal), or preparing to investigate, prosecute, defend, be a witness in, or participate in, any Proceeding relating to Indemnitee's Corporate Service, and shall include (without limitation) all attorneys’ fees and all other expenses incurred by or on behalf of Indemnitee in connection with preparing and submitting any requests or statements for indemnification, advancement, or any other right provided by this Agreement (including, without limitation, such fees or expenses incurred in connection with legal proceedings contemplated by Section 1(d) hereof).

(c)The obligation of the Corporation to indemnify Indemnitee under Section 1(a) above and to advance Expenses under Section 1(b) above shall not extend to Indemnifiable Amounts, in the case of Section 1(a), or Expenses, in the case of Section 1(b), in each case, incurred in connection with any Proceeding (or part thereof) initiated

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by Indemnitee unless (x) such Proceeding is to enforce Indemnitee's rights to indemnification or advancement under this Agreement or (y) such Proceeding (or part thereof) was authorized by the Board.

(d)The Corporation shall indemnify, or cause the indemnification of, Indemnitee against any and all Indemnifiable Amounts in accordance with Section 1(a) above and shall advance Expenses to Indemnitee in accordance with Section 1(b) above that are incurred by Indemnitee in connection with any Proceeding brought by Indemnitee for (i) indemnification of Indemnifiable Amounts or advancement of Expenses by the Corporation under this Agreement or any other agreement or provision of the Bylaws now or hereafter in effect and (ii) recovery under any directors’ and officers’ liability insurance policies maintained by the Corporation, regardless of whether Indemnitee ultimately is determined to be entitled to such indemnification, advancement of Expenses, or insurance recovery, as the case may be.

2. Mandatory Indemnification for Successful Party.

In addition to the other provisions of this Agreement, without limitation of Indemnitee's other rights under this Agreement and without regard to any determination of Indemnitee's entitlement to indemnification under Section 3 of this Agreement, to the extent that Indemnitee is successful, on the merits or otherwise, in any Proceeding to which Indemnitee is, was or at any time becomes a party, or is threatened to be made a party or is involved (as a witness or otherwise) by reason of Indemnitee's Corporate Service, or in defense of any claim, issue or matter in such Proceeding, in whole or in part, the Corporation shall be liable to indemnify Indemnitee against all Indemnifiable Amounts actually incurred by Indemnitee in connection therewith.  If Indemnitee is not wholly successful in such Proceeding but is successful, on the merits or otherwise, as to

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one or more but less than all claims, issues or matters in such Proceeding, the Corporation shall be liable to indemnify Indemnitee against all Indemnifiable Amounts actually incurred by Indemnitee in connection with each successfully resolved claim, issue or matter.  For purposes of this Section 2 and without limitation of the foregoing, the termination of any claim, issue or matter in a Proceeding to which Indemnitee is, was or at any time becomes a party, or is threatened to be made a party or is involved (as a witness or otherwise) by reason of Indemnitee's Corporate Service, by dismissal, with or without prejudice, shall be deemed to be a successful result as to such claim, issue or matter.

3. Procedure for Payment of Indemnification.

(a) Indemnitee shall, as soon as practicable after becoming aware of facts giving rise to a Proceeding for indemnification hereunder, submit to the Corporation a written request for indemnification, including such documentation and information as are reasonably available to Indemnitee and necessary to establish that Indemnitee is entitled to indemnification hereunder, specifying the amounts for which Indemnitee seeks payment under this Agreement and the basis for the claim for indemnification.  The Corporation shall pay such indemnifiable amounts to or on behalf of Indemnitee within ninety (90) calendar days of receipt of the request, unless Indemnitee agrees to a longer period of time or unless a court orders payment of amounts indemnifiable under this Agreement within a shorter period of time.

(b)To the extent, and only to the extent, that a determination of Indemnitee's entitlement to indemnification at the time of or prior to any award or payment of indemnification is required by applicable law which cannot be waived, then such determination shall be made as follows:  

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(i)At the request of the Corporation, Indemnitee shall furnish such documentation and information as are reasonably available to Indemnitee and necessary to establish that Indemnitee is entitled to indemnification hereunder; provided, however, that Indemnitee shall not be required to furnish any document or information protected from disclosure by the attorney-client privilege, the work-product protection or other privilege or protection.  

(ii)Once Indemnitee submits such a written request for indemnification (and only at such time that Indemnitee submits such a written request for indemnification) pursuant to Section 3(a) of this Agreement, a determination shall thereafter be made as to Indemnitee's entitlement to indemnification.  In the event that the Corporation objects to Indemnitee's request for indemnification, the Corporation shall submit a written objection to Indemnitee within 15 days after receipt of Indemnitee's written request for indemnification.  In no event shall a determination of Indemnitee's entitlement to indemnification be made, or required to be made, as a condition to or otherwise in connection with any advancement of Expenses pursuant to Section 1(b) of this Agreement.  Any such determination of Indemnitee's entitlement to indemnification shall be made within seventy (70) days after receipt of Indemnitee's written request for indemnification pursuant to Section 3(a) of this Agreement, unless Indemnitee agrees to a longer period or a court orders payment of the amounts indemnifiable under this Agreement within a shorter period of time.  

(iii)Any determination of Indemnitee's entitlement to indemnification shall be made by Independent Counsel, selected pursuant to Section 10 of this Agreement, in a written opinion to the Corporation and Indemnitee, unless Indemnitee,

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in Indemnitee's sole discretion, elects to have the directors of the Corporation who are independent with respect to such claim andProceeding (the "Disinterested Directors")make the determination, in which case the Disinterested Directors will make the determination as elected by Indemnitee.  Notwithstanding the preceding sentence, if a quorum consisting of the Disinterested Directors is not obtainable or a Change in Control has occurred, then such determination shall be made by Independent Counsel.  If a determination is made by either(A) Independent Counsel or (B) a majority vote of a quorum consisting of the Disinterested Directorsthat Indemnitee is entitled to indemnification, the Corporation shall make payment to Indemnitee within twenty (20) days after such determination, unless Indemnitee agrees to a longer period or a court orders payment within a shorter period.  Indemnitee shall reasonably cooperate with Independent Counsel or the Disinterested Directors, as applicable,with respect to Indemnitee's entitlement to indemnification, including providing, upon reasonable advance request, any documentation or information which is not privileged or otherwise protected from disclosure and which is reasonably available to Indemnitee and reasonably necessary to such determination.  Any Expenses actually incurred by Indemnitee in so cooperating with Independent Counsel or the Disinterested Directors, as applicable,shall be advanced and borne by the Corporation as provided in Section 1(b)of this Agreement.

(iv)In making the determination required to be made under Pennsylvania law with respect to an Indemnitee's entitlement to indemnification hereunder, the person, persons or entity making such determination shall presume that Indemnitee is entitled to indemnification under this Agreement if Indemnitee has

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submitted a request therefor in accordance with Section 3(a) of this Agreement, and the Corporation shall have the burden of proof to establish by clear and convincing evidence that Indemnitee is not so entitled (including in a Proceeding regarding whether Indemnitee is entitled to indemnification under this Agreement).

(v)The Corporation shall be bound by and shall have no right to challenge a determination of Indemnitee's entitlement to indemnification by Independent Counsel (or, if applicable, by the Disinterested Directors) that is favorable to Indemnitee.  

4. Remedies of the Indemnitee.

(a)If a determination of Indemnitee's entitlement to indemnification is made and such determination is adverse to Indemnitee, Indemnitee shall have the right to commence a Proceeding before a court of competent jurisdiction to challenge such adverse determination.  If Indemnitee fails to challenge an adverse determination, or if Indemnitee challenges an adverse determination and such adverse determination has been upheld by a final judgment of a court of competent jurisdiction from which no appeal can be taken, then, to the extent and only to the extent required by such adverse determination or final judgment, the Corporation shall not be obligated to indemnify Indemnitee under this Agreement.

(b)If (i) a claim for indemnification under Section 1(a) of this Agreement is not paid in full by the Corporation within the period of time specified in Section 3(a) of this Agreement or (ii) a claim for advancement of Expenses under Section 1(b) of this Agreement is not paid in full by the Corporation within thirty (30) days after a written request for advancement of Expenses has been received by the Corporation, Indemnitee may, at any time thereafter, bring suit against the Corporation to recover the unpaid amount of such claim for indemnification or advancement of Expenses in any

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court of competent jurisdiction.  The burden of proving by clear and convincing evidence that indemnification or advancement of Expenses is not appropriate shall be on the Corporation.  As provided in Section 1(d) of this Agreement, Indemnitee shall be entitled to be advanced the Expenses actually incurred by Indemnitee in prosecuting such claim, and the Corporation shall pay such Expenses actually incurred by Indemnitee in connection with prosecuting, pursuing, investigating, preparing for, litigating, defending or settling any action brought under this Section 4(b) in advance of the final disposition of such action and in accordance with the terms and conditions for advancement of Expenses set forth in Section 1(b) of this Agreement.  

5. Indemnification Trust.

(a)  Establishment of the Indemnification Trust.  In the event of a Potential Change in Control or a Change in Control, the Corporation shall, upon written request by Indemnitee, create a trust (the "Indemnification Trust") for the benefit of Indemnitee, and from time to time upon written request of Indemnitee shall fund such Indemnification Trust in an amount sufficient to satisfy any and all Indemnifiable Amounts reasonably anticipated at the time of each such request to be reasonably incurred in connection with investigating, preparing for, participating in or defending any Proceedings to which Indemnitee is, was or at any time becomes a party, or is threatened to be made a party or is involved (as a witness or otherwise) by reason of Indemnitee's Corporate Service, from time to time actually paid or claimed, reasonably anticipated or proposed to be paid.  The trustee of the Indemnification Trust (the "Trustee") shall be a bank or trust company or other individual or entity chosen by Indemnitee and reasonably acceptable to the Corporation.  Nothing in this Section 5(a) shall relieve the Corporation of any of its obligations under this Agreement.  The amount

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or amounts to be deposited in the Indemnification Trust pursuant to the foregoing funding obligation shall be determined by mutual agreement of Indemnitee and the Corporation or, if the Corporation and Indemnitee are unable to reach such an agreement, by Independent Counsel selected in accordance with Section 10 of this Agreement.

(b)The terms of the Indemnification Trust shall provide that, except upon the consent of both Indemnitee and the Corporation:  (i) the Indemnification Trust shall not be revoked or amended or the principal thereof invaded, without the written consent of Indemnitee; (ii) the Trustee shall advance, to the fullest extent permitted by applicable law, within two (2) business days of a request by Indemnitee, any and all Expenses actually incurred by Indemnitee in connection with any and all Proceedings to which Indemnitee is, was or at any time becomes a party, or is threatened to be made a party or is involved (as a witness or otherwise) by reason of Indemnitee's Corporate Service; (iii) the Indemnification Trust shall continue to be funded by the Corporation in accordance with the funding obligations set forth above; (iv) the Trustee shall promptly pay to Indemnitee all amounts for which Indemnitee shall be entitled to indemnification pursuant to this Agreement or otherwise; and (v) all unexpended funds in such Indemnification Trust shall revert to the Corporation upon mutual agreement by Indemnitee and the Corporation or, if Indemnitee and the Corporation are unable to reach such an agreement, upon determination by Independent Counsel selected in accordance with Section 10 of this Agreement, that Indemnitee has been fully indemnified under the terms of this Agreement;provided, however, that the funds shall not revert to the Corporation until the later of a dismissal with prejudice of all then-

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outstanding Proceedings or two years following any other termination of all outstanding Proceedings.  

(c)A "Change in Control" shall be deemed to have occurred if any of the following shall have occurred after the date hereof:

(i) at any time (x) any Person (other than a Person that is, at such time, a Permitted Holder) is or becomes the Beneficial Owner of 30% or more of the Voting Power of the Corporation and (y) no Person that is, at such time, a Permitted Holder Beneficially Owns as of such time, without giving effect to the existence of any group other than a group that is itself a Permitted Holder, a greater percentage of the Voting Power of the Corporation than the percentage of the Voting Power of the Corporation Beneficially Owned by the Person referred to under clause (x) at such time;

(ii) during any period of two (2) consecutive years, the following individuals cease for any reason (other than the occurrence of an emergency or other condition or event described in Section 1509(a) of the Pennsylvania Business Corporation Law) to constitute at least a majority of the Board:  (A) individuals who at the beginning of such period were members of the Board and (B) any new director whose appointment or election by the Board or nomination for election by the Corporation's shareholders was approved by a vote of at least a two-thirds (2/3) of those directors then in office who were directors at the beginning of such two (2) year period or whose election or nomination for election was previously approved in accordance with this clause (B), but excluding any such new director who is initially proposed for office in an actual or threatened election contest or other actual or threatened solicitation of proxies or consents by or on behalf of any Person other than the Board;

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(iii) the consummation of (A) a merger or consolidation involving the Corporation, (B) a sale or other disposition of all or substantially all of the assets of the Corporation (on a consolidated basis), including a sale or disposition of all or substantially all of the assets of the Corporation (on a consolidated basis) pursuant to a spin-off or split-up, or (C) any other substantially similar transaction or series of related transactions involving the Corporation (each of the transactions in clauses (A), (B) and (C), a "Corporate Transaction"), but excluding a Non-Control Acquisition or a Spin-Off; or

(iv) the shareholders of the Corporation approve a plan of complete liquidation or dissolution of the Corporation.

Notwithstanding anything to the contrary in the foregoing, for purposes of clause (i) of the definition of Change in Control, the following transactions shall not constitute a Change in Control:

(x)  any Person becomes the Beneficial Owner of 30% or more of the Voting Power of the Corporation as a result of a reduction in the number of shares of Common Stock pursuant to a transaction or series of transactions that is approved by a majority of the Board, unless such Person thereafter becomes the Beneficial Owner of additional shares of Common Stock representing 1% or more of the Voting Power of the Corporation;

(y)  if a majority of the Board determines in good faith that a Person has acquired Beneficial Ownership of 30% or more of the Voting Power of the Corporation inadvertently and, no later than the date set by the Board such Person divests a sufficient number of shares so that, after such divestiture, such Person no longer

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Beneficially Owns 30% or more of the Voting Power of the Corporation; or

(z)  any Person becomes the Beneficial Owner of 30% or more of the Voting Power of the Corporation as a result of an issuance or sale of securities by the Corporation or any of its Subsidiaries.

Other definitions used in the "Change in Control" definition:

"Affiliate" shall mean with respect to any person or entity, any other person or entity that, at any time that a determination is made hereunder, directly or indirectly, controls, is controlled by, or is under common control with such first person or entity.  For the purpose of this definition, "control" shall mean, as to any person or entity, the possession, directly or indirectly, of the power to elect or appoint a majority of directors (or other persons acting in similar capacities) of such person or entity or otherwise to direct or cause the direction of the management and policies of such person or entity, whether through the ownership of voting securities, by contract or otherwise.

"Beneficial Owner", "Beneficially Own" and "Beneficial Ownership" shall have the meaning as set forth in Rules 13d-3 and 13d-5 promulgated under the Exchange Act or any successor provision.

"Common Stock" shall mean the common stock of the Corporation.

"Group" or "group" shall have the meaning ascribed thereto in Section 13(d)(3) or Section 14(d)(2) of the Exchange Act or any successor provision.

"Non-Control Acquisition" shall mean a Corporate Transaction that is a merger or consolidation involving the Corporation (or any other substantially similar transaction or series of related transactions involving the Corporation) where:

(1) Persons who are the Beneficial Owners of the Voting Power of the

16

Corporation immediately prior to such Corporate Transaction will Beneficially Own, by reason of such immediately prior Beneficial Ownership, immediately after such Corporate Transaction an aggregate of more than 45% of the Voting Power of the surviving, resulting or acquiring entity in such Corporate Transaction; and

(2) such Corporate Transaction shall not result in a Change in Control with respect to the surviving, resulting or acquiring entity under clause (i) of the definition of "Change in Control" (as if such definition and the definition of "Permitted Holder" referred to such surviving, resulting or acquiring entity and taking into account the paragraph beginning "Notwithstanding" immediately following clause (iv) of such definition); and

(3) individuals who were members of the Board immediately prior to such Corporate Transaction constitute at least a majority of the members of the board of directors (or similar governing body) of the Corporation or other surviving, resulting or acquiring entity in such Corporate Transaction immediately after such Corporate Transaction.

"Permitted Holder" shall mean any of (a) the Corporation or any entity controlled by the Corporation, (b) any employee benefit plan (or related trust) sponsored or maintained by the Corporation or by any entity controlled by the Corporation, (c) any group of which any of the foregoing are members or (d) any member of any group that is a Permitted Holder pursuant to clause (c) of this definition at the time of the determination of whether such member is a Permitted Holder, and any of such member's Affiliates.

"Person" shall mean any individual, entity or group, including any "person" or

17

"group" within the meaning of Section 13(d)(3) or Section 14(d)(2) of the Exchange Act, or any successor provision.

"Spin-Off" shall mean a disposition of what the Board determines in good faith, after consultation with its outside counsel, to be all or substantially all of the assets of the Corporation (on a consolidated basis) pursuant to a spin-off, split-up or similar transaction where Persons who are the Beneficial Owners of the Voting Power of the Corporation immediately prior to such transaction will Beneficially Own, by reason of such immediately prior Beneficial Ownership, an aggregate of more than a majority of the Voting Power of each of the entities resulting from such transaction (including Armstrong World Industries, Inc.) immediately after such transaction; provided, that, if another Corporate Transaction involving any entity resulting from such transaction (including Armstrong World Industries, Inc.) occurs in connection with a Spin-Off, such Corporate Transaction shall be analyzed separately for purposes of determining whether a Change in Control has occurred with respect to the entity resulting from such Spin-Off that employs Indemnitee immediately after such Spin-Off (which may be Armstrong World Industries, Inc.).

"Voting Power" shall mean, calculated at a particular point in time, the aggregate votes represented by all the then outstanding securities of an entity then entitled to vote generally in the election of directors of such entity (as applicable) but excluding any votes which a Person shall have upon and by reason of the non-payment of dividends on preferred shares in accordance with the terms of such preferred shares.

(d)A "Potential Change in Control" shall be deemed to occur if any of the following shall have occurred after the date hereof: (A) the Corporation enters into an

18

agreement or arrangement, the consummation of which would result in the occurrence of a Change in Control; (B) any Person publicly announces a tender offer or comparable action which if consummated would constitute a Change in Control; or (C) the Board of the Corporation adopts a resolution to the effect that, for the purposes of this Agreement, a Potential Change in Control has occurred.

6. Maintenance of Insurance and Funding.

(a)The Corporation has in place one or more policies of D&O Insurance (the “Insurance Policies”) for the benefit and protection of its directors and officers, including Indemnitee, and the Corporation believes the coverage amounts and terms of such Insurance Policies are reasonable and appropriate under the circumstances.  The Corporation hereby agrees that, so long as Indemnitee shall continue to perform Corporate Service and thereafter so long as Indemnitee shall be subject to any Proceeding by reason of Indemnitee’s Corporate Service, the Corporation (i) shall use its reasonable best efforts to maintain in effect for the benefit of Indemnitee a binding and enforceable policy or policies of D&O Insurance providing coverage at least comparable to that provided pursuant to the Insurance Policies, and agrees that Indemnitee shall continue to be covered by such policies in accordance with their terms and to the maximum extent of the coverage available for any director or officer under the Insurance Policies; provided, that, if the Corporation, after employing such reasonable best efforts, determines in good faith that such comparable insurance is not reasonably available, then the Corporation agrees that Indemnitee shall be covered by such policy or policies of D&O Insurance as provides coverage to the maximum extent that is then provided to any other director or officer of the Corporation, and (ii) shall

19

ensure that any successor-in-interest to the Corporation shall maintain such insurance coverage for the benefit of Indemnitee.

(b)Upon receipt of a notice of a claim for indemnification or advancement of Expenses pursuant to Section 1(a) or 1(b) of this Agreement, the Corporation shall give prompt notice of the commencement of such Proceeding to the insurers in accordance with the procedures set forth in the respective policies. The Corporation shall thereafter take all necessary or desirable action to cause such insurers to pay, on behalf of Indemnitee, all amounts payable as a result of such Proceeding in accordance with the terms of such policies.

7. Continuation of Indemnity.

All agreements and obligations of the Corporation contained in this Agreement shall continue during the period that Indemnitee is performing Corporate Service.  Following termination of Indemnitee's Corporate Service or resignation by Indemnitee, all agreements and obligations of the Corporation contained in this Agreement shall continue thereafter; provided, however, that such agreements and obligations of the Corporation shall continue only with respect to any Proceeding arising out of, and by reason of, Indemnitee's Corporate Service prior to such termination of Indemnitee's Corporate Service or resignation by Indemnitee.

8. Notification and Defense of Proceeding.  

Indemnitee shall notify the Corporation in writing as soon as practicable after becoming aware of any Proceeding to which Indemnitee is, was or at any time becomes a party, or is threatened to be made a party or is involved (as a witness or otherwise) by reason of Indemnitee's Corporate Service, if a claim for indemnification in respect thereof may be or is being made by Indemnitee against the Corporation under this

20

Agreement.  Such notice shall include a brief description (based upon information then available to Indemnitee) of the nature of, and the facts underlying, such Proceeding. The failure by Indemnitee to timely notify the Corporation hereunder shall not relieve the Corporation from any liability hereunder unless the Corporation's ability to participate in the defense of such Proceeding was materially and adversely affected by such failure. With respect to any such Proceeding as to which Indemnitee has so notified the Corporation:

(a)Indemnitee shall be entitled to retain counsel of Indemnitee's own choosing to represent Indemnitee in the Proceeding to the extent such Proceeding involves Indemnitee.  The Corporation shall, in all events, be entitled to participate in the Proceeding at its own expense.  If Indemnitee is a participant in such Proceeding with any other person(s) to whom the Corporation owes an obligation to advance expenses in connection with such Proceeding, the Corporation shall not be required to advance expenses for more than one law firm (and, if necessary, one additional law firm to act as local counsel) to represent collectively Indemnitee and such other person(s) in respect of the same matter unless Indemnitee reasonably concludes that the representation of Indemnitee and such other person(s) gives rise to an actual or potential conflict of interest.  

(b)The Corporation shall not be obligated to indemnify Indemnitee under this Agreement for any amounts paid in settlement of such Proceeding to the extent effected without the Corporation's prior written consent. The Corporation shall not settle such Proceeding, whether or not including Indemnitee, in any manner which would: (i) impose any penalty or limitation on Indemnitee, (ii) include an admission of fault of, or

21

adverse finding with respect to, Indemnitee, (iii) not include, as an unconditional term thereof, the full release of Indemnitee from all liability in respect of such Proceeding, which release shall be in form and substance reasonably satisfactory to Indemnitee, or (iv) have the actual or purported effect of extinguishing, limiting or impairing Indemnitee's rights hereunder, including without limitation the entry of any contribution bar order, other bar order or other similar order, decree or stipulation pursuant to 15 U.S.C. § 78u-4 or any other foreign, federal or state statute, regulation, rule or law, without the prior written consent of Indemnitee.  Neither the Corporation nor Indemnitee will unreasonably withhold, condition or delay consent to any proposed settlement; provided that Indemnitee may withhold consent to any settlement that does not provide a complete and unconditional release of Indemnitee.

9. Notice.

All notices, requests, consents, and other communications hereunder to any party shall be deemed to be sufficient if contained in a written document delivered in person or sent by facsimile, e-mail or other electronic transmission, nationally recognized overnight courier, or personal delivery, addressed to such party at the address set forth below or such other address as may hereafter be designated on the signature pages of this Agreement or in writing by such party to the other party:

(a)If to the Corporation, to:

Armstrong World Industries, Inc.

2500 Columbia Avenue

Lancaster, Pennsylvania 17603

Facsimile:

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E-mail:

Attn: Secretary

(b)If to Indemnitee, to the address set forth on the signature page hereof.  

All such notices, requests, consents, and other communications shall be deemed to have been given or made if and when received (including by overnight courier) by the parties at the above addresses, sent by electronic transmission (including e-mail) to the e-mail addresses specified above, or sent by facsimile transmission to the facsimile numbers specified above (or at such other address, e-mail address, or facsimile number for a party as shall be specified by like notice).  Any notice delivered by any party hereto to any other party hereto shall also be delivered to each other party hereto simultaneously with delivery to the first party receiving such notice.

10. Independent Counsel.

(a)"Independent Counsel" shall mean any law firm, or a member of a law firm, that (i) is experienced in matters of Pennsylvania corporation law and (ii) is not, at such time, or has not been in the five (5) years prior to such time, retained to represent either (x) the Corporation or Indemnitee in any matter material to either such party or (y) any other party to the Proceeding giving rise to a claim for indemnification hereunder.  Notwithstanding the foregoing, the term "Independent Counsel" shall not include any person who, under the applicable standards of professional conduct then prevailing, would have a conflict of interest in representing either the Corporation or Indemnitee in an action to determine Indemnitee's rights under this Agreement.

(b)Independent Counsel shall be selected by Indemnitee, and Indemnitee shall give written notice to the Corporation advising the Corporation of the identity of the Independent Counsel so selected, simultaneously with providing the Corporation with the written request for indemnification.  The Corporation may, within ten (10) days after such written notice of selection shall have been received, deliver to Indemnitee a written objection to such selection; provided, however, that such objection may be asserted only on the grounds that the Independent Counsel so selected does not meet the requirements of "Independent Counsel" as defined in Section 10(a) of this Agreement, and the objection shall set forth with particularity the factual basis of such assertion.  Absent a proper and timely objection, the person so selected shall act as Independent Counsel.  If a written objection is so made and substantiated, the Independent Counsel so selected may not serve as Independent Counsel unless and until such objection is withdrawn or a court of competent jurisdiction has determined that such objection has not been established by the Corporation.  If, within twenty (20) days after such written notice of selection shall have been received, no Independent Counsel shall have been selected and not objected to, either the Corporation or the Indemnitee may petition a court of competent jurisdiction for resolution of any objection which shall have been made by the Corporation to Indemnitee's selection of Independent Counsel and/or for the appointment as Independent Counsel of a person selected by such court, and the person with respect to whom all objections are so resolved or the person so appointed shall act as Independent Counsel.

23

(c)The Corporation agrees to pay the reasonable fees and expenses of Independent Counsel and to fully indemnify such Independent Counsel against any and all expenses, claims, liabilities and damages arising out of or relating to this Agreement

24

or its engagement pursuant hereto.

11. Severability.

If any provision or provisions of this Agreement shall be held to be invalid, illegal or unenforceable for any reason whatsoever:

(a)the validity, legality and enforceability of the remaining provisions of this Agreement (including without limitation, each portion of any Section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby; and

(b)to the fullest extent possible, the provisions of this Agreement (including, without limitation, each portion of any Section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall be construed so as to give effect to the intent manifested by the provision held invalid, illegal or unenforceable.

12. Indemnification Under this Agreement Not Exclusive.

The rights of the Indemnitee hereunder shall be in addition to any other rights Indemnitee may have under the Bylaws or under any other agreement, any vote of stockholders or directors, or otherwise; provided, however, that this Agreement shall supersede any prior indemnification agreement between the Corporation and Indemnitee.  To the extent that a change in applicable law (whether by statute or judicial decision) permits greater indemnification than would be afforded currently under the Bylaws, applicable law or this Agreement, it is the intent of the parties hereto that Indemnitee enjoy by this Agreement the greater benefits so afforded by such change.  To the extent that there is a conflict or inconsistency between the terms of this

25

Agreement and the Bylaws, it is the intent of the parties hereto that Indemnitee shall enjoy the greater benefits regardless of whether contained herein or in the Bylaws.  No amendment or alteration of the Bylaws or any other agreement shall adversely affect the rights provided to Indemnitee under this Agreement.

13. Corporation as Primary Indemnitor.

The Corporation hereby acknowledges that Indemnitee may have certain rights to indemnification, advancement of Expenses and/or insurance provided by a third party and its affiliates (collectively, "Third-Party Indemnitors").  The Corporation hereby acknowledges and agrees (i) that it is the indemnitor of first resort (i.e., its obligations to Indemnitee are primary and any obligation of such Third-Party Indemnitors to advance Expenses or to provide indemnification for the Indemnifiable Amounts incurred by Indemnitee are secondary), (ii) that it shall be required to advance the full amount of Expenses incurred by Indemnitee and shall be liable to indemnify Indemnitee for the Indemnifiable Amounts as required by the terms and conditions of this Agreement and the Bylaws (or any other agreement between the Corporation and Indemnitee), without regard to any rights Indemnitee may have against the Third-Party Indemnitors, and, (iii) that it irrevocably waives, relinquishes and releases the Third-Party Indemnitors from any and all claims against the Third-Party Indemnitors for contribution, subrogation or any other recovery of any kind in respect thereof.  The Corporation further agrees that no advancement or payment by the Third-Party Indemnitors on behalf of Indemnitee with respect to any claim for which Indemnitee has sought indemnification from the Corporation shall affect the foregoing and the Third-Party Indemnitors shall have a right of reimbursement and/or be subrogated to the extent of such advancement or payment to all of the rights of recovery of Indemnitee against the Corporation.  The Corporation

26

and Indemnitee agree that the Third-Party Indemnitors are express third party beneficiaries of this Section 13.

14. Subrogation; No Duplication of Payments.

(a)Except as provided in Section 13 above, in the event of any payment under this Agreement, the Corporation shall be subrogated to the extent of such payment to all of the rights of recovery of Indemnitee (other than against the Third-Party Indemnitors), who shall execute all papers required and take all action necessary to secure such rights, including execution of such documents as are necessary to enable the Corporation to bring suit to enforce such rights.  

(b)Except as provided in Section 13 above, the Corporation shall not be liable under this Agreement to make any payment of amounts otherwise indemnifiable hereunder (or for which advancement is provided hereunder) if and to the extent that Indemnitee has otherwise actually received such payment under any insurance policy, contract, agreement or otherwise.

15. Miscellaneous.

(a)This Agreement shall be governed by and construed and enforced in accordance with the laws of the Commonwealth of Pennsylvania.

(b)This Agreement shall be binding upon and inure to the benefit of the Corporation and its successors and assigns (including any direct or indirect successor by purchase, merger, consolidation or otherwise to all or substantially all of the business or assets of the Corporation), and shall be binding upon and inure to the benefit of Indemnitee, his or her heirs, executors, personal representatives and assigns.  This Agreement shall continue in effect regardless of whether Indemnitee continues to serve as an officer or director of the Corporation or of any Other Enterprise at the

27

Corporation's request. In furtherance and not in limitation of Section 5 of this Agreement, if the Corporation shall merge or consolidate with another corporation or shall sell, lease, transfer or otherwise dispose of all or substantially all of its assets to one or more persons or groups (in one transaction or series of transactions), (i) the Corporation shall cause the successor in the merger or consolidation or the transferee of the assets that is receiving the greatest portion of the assets or earning power transferred pursuant to the transfer of the assets, by agreement in form and substance satisfactory to Indemnitee, to expressly assume all of the Corporation's obligations under and agree to perform this Agreement, and (ii) the term "Corporation" whenever used in this Agreement shall mean and include any such successor or transferee or any other surviving entity following any merger, consolidation, sale, lease, transfer or otherwise of all or substantially all of the assets of the Corporation.

(c)No amendment, modification, termination or cancellation of this Agreement shall be effective unless in writing and signed by both of the parties hereto.  No waiver of any of the provisions of this Agreement shall be effective unless in writing and signed by the party granting such waiver, and no such waiver shall be deemed or shall constitute a waiver of any other provisions hereof (whether or not similar), nor shall such waiver constitute a continuing waiver  

(d)This Agreement may be executed in one or more counterparts, each of which will be deemed to be an original copy of this Agreement and all of which, when taken together, will be deemed to constitute one and the same agreement.  Delivery of executed signature pages by facsimile or electronic transmission shall constitute effective and binding execution of this Agreement.

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(e)The parties recognize that if any provision of this Agreement is violated by the parties hereto, Indemnitee may be without an adequate remedy at law.  Accordingly, in the event of any such violation, Indemnitee shall be entitled, if Indemnitee so elects, to institute a Proceeding, either at law or in equity, to obtain damages, to enforce specific performance, to enjoin such violation, or to obtain any relief or any combination of the foregoing as Indemnitee may elect to pursue.

[Signature Page Follows]

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IN WITNESS WHEREOF, the parties hereto have executed this Agreement this ___ day of ____________, ______.

INDEMNITEE ARMSTRONG WORLD INDUSTRIES, INC.

By: By:

      Name: Name:

Address: Title:

[Signature Page to AWI D&O Indemnification Agreement]

EX-99.1

Exhibit 99.1

Armstrong World Industries Reports Second Quarter 2021 Results

Key Highlights

• Net sales up 38% versus the prior-year quarter

• Operating income up 26% versus the prior-year quarter

• Adjusted EBITDA up 44% versus the prior-year quarter

• Increased full-year 2021 sales and earnings guidance

LANCASTER, Pa., July 27, 2021 -- Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of commercial and residential ceiling, wall and suspension system solutions, today reported strong year-over-year sales and earnings growth for the second quarter 2021 as market conditions continued to rebound from the impact of COVID-19.

“Our strong second quarter results demonstrate a continued recovery in many of our key markets from COVID-19 challenges, as well as operational excellence and best-in-class service and distribution models that continue to distinguish Armstrong within the industry,” said Vic Grizzle, President and CEO of AWI. “While the recovery remains uneven and choppy, our actions and investments in support of our digital initiatives, Healthy Spaces products and Architectural Specialties portfolio have enhanced our growth potential. The momentum in our business fuels our confidence to increase our full-year 2021 guidance.”

Second Quarter Results from Continuing Operations

(Dollar amounts in millions except per-share data)	For the Three Months Ended June 30,
	2021		2020		Change
Net sales	$	280.0	$	203.2		37.8	%
Operating income	$	78.3	$	62.4		25.5	%
Earnings from continuing operations	$	55.1	$	49.5		11.3	%
Diluted earnings per share	$	1.14	$	1.03		10.7	%
Additional Non-GAAP* Measures
Adjusted EBITDA	$	100	$	69		44	%
Adjusted net income	$	56	$	35		62	%
Adjusted diluted earnings per share	$	1.16	$	0.72		61	%
Adjusted free cash flow	$	64	$	63		1	%

* The Company uses non-GAAP adjusted measures in managing the business and believes the adjustments provide meaningful comparisons of operating performance between periods and are useful alternative measures of performance. Reconciliations of the most comparable GAAP measure are found in the tables at the end of this press release. Non-GAAP figures are rounded to the nearest million and corresponding percentages are rounded to the nearest percent based on unrounded figures.

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Consolidated net sales for the 2021second quarter increased 37.8% from prior-year results, driven primarily by higher Mineral Fiber sales volumes, incremental sales from theacquisitionof Turf, Moz and Arktura in 2020 (“2020 Acquisitions”) and favorable Average Unit Value (“AUV”). Volumes for both segments were driven higher by an increase in demand amid improving economic conditions and lesser COVID-19 impact when compared with the prior-year quarter.

Operating income increased 25.5% from second-quarter 2020 results, primarily driven by higher sales volumes in both the Mineral Fiber and Architectural Specialties segments, favorable AUV in the Mineral Fiber segment and an increase in WAVE equity earnings. The company also reported a $10 million reduction in the fair value contingent consideration related to Turf and Moz. These benefits were partially offset by higher SG&A costs attributable to the 2020 Acquisitions, a resumption in discretionary spending and variable compensation, both of which had been curtailed at the height of the COVID-19 pandemic in the prior year, and investments for future growth.

Second Quarter Segment Highlights

Mineral Fiber

(Dollar amounts in millions)	For the Three Months Ended June 30,
	2021		2020		Change
Net sales	$	208.1	$	157.9		31.8	%
Operating income	$	72.1	$	45.6		58.1	%
Adjusted EBITDA*	$	90	$	62		44	%

Second-quarter 2021 Mineral Fiber net sales increased 32% due to higher sales volumes and a 10% increase in AUV. An increase in like-for-like pricing and improved sales mix driven by regional improvements in major metropolitan areas compared to the second quarter of 2020 contributed equally to the AUV increase.

Operating income increased sharply as expected in the second quarter primarily due to the positive impact of higher sales volume, favorable AUV and increased WAVE equity earnings, partially offset by higher SG&A expenses attributable to an increase in discretionary spending including variable compensation and investments in growth initiatives.

Architectural Specialties

(Dollar amounts in millions)	For the Three Months Ended June 30,
	2021		2020		Change
Net sales	$	71.9	$	45.3		58.7	%
Operating income	$	7.4	$	4.3		72.1	%
Adjusted EBITDA*	$	10	$	6		48	%

Second-quarter 2021 net sales in Architectural Specialties increased 59% from prior-year results, driven by the 2020 Acquisitions and higher organic sales volumes due to the lessening impact from COVID-19 on economic activity compared to the prior year period.

Operating income increased in the second quarter due to the positive impact of higher sales volumes and a $10 million reduction in the fair value of contingent consideration related to Turf and Moz, which was partially offset by a $6 million increase in amortization expense and a $4 million increase in acquisition-related charges, both related to the 2020 Acquisitions.

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Unallocated Corporate

Unallocated corporate operating loss was $1 million in the second quarter of 2021 compared to income of $13 million in the second quarter of 2020, driven by a $14 million gain reported in the prior-year period from the sale of the idled, legacy mineral fiber plant in China.

Market Outlook and 2021 Guidance

“We are increasingly confident about improving market conditions and expect to exit the year on a sales rate per day basis comparable to 2019,” said Brian MacNeal, AWI CFO. “As we monitor the impacts and evolution of the pandemic, we will remain vigilant in our management of inflationary pressures and continue to adjust our pricing accordingly. As a result of our team’s solid execution through the first half of the year, a robust project pipeline and additional clarity around the current marketplace, we are elevating our 2021 guidance. We now expect to grow net sales 16% to 18% and adjusted EBITDA 12% to 15% versus the prior year, as we continue to invest to capitalize on improving market conditions.”

Earnings Webcast

Management will host a live internet broadcast beginning at 10:00 a.m. ET today, to discuss second quarter 2021 results. This event will be broadcast live on the Company's website. To access the call and accompanying slide presentation, go to www.armstrongceilings.com and click Investors. The replay of this event will also be available on the Company's website for up to one year after the date of the call.

Uncertainties Affecting Forward-Looking Statements

Disclosures in this release, including without limitation, those relating to future financial results, market conditions and guidance, the impacts of COVID-19 on our business, and in our other public documents and comments, contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Those statements provide our future expectations or forecasts and can be identified by our use of words such as “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe,” “outlook,” “target,” “predict,” “may,” “will,” “would,” “could,” “should,” “seek,” and other words or phrases of similar meaning in connection with any discussion of future operating or financial performance.Forward-looking statements, by their nature, address matters that are uncertain and involve risks because they relate to events and depend on circumstances that may or may not occur in the future. As a result, our actual results may differ materially from our expected results and from those expressed in our forward-looking statements. A more detailed discussion of the risks and uncertainties that could cause our actual results to differ materially from those projected, anticipated or implied is included in the “Risk Factors” and “Management’s Discussion and Analysis” sections of our reports on Form 10-K and 10-Q filed with the U.S. Securities and Exchange Commission (“SEC”). Forward-looking statements speak only as of the date they are made. We undertake no obligation to update any forward-looking statements beyond what is required under applicable securities law.

COVID-19

The impact of the COVID-19 pandemic on our future consolidated results of operations remains uncertain. In 2020, we experienced a significant decrease in customer demand throughout our business during the second through fourth quarters due to COVID-19. Specifically, we noted delays in construction driven by temporary closures of non-essential businesses, with the most significant impacts in the major metropolitan areas impacted by COVID-19. In response to COVID-19, we temporarily reduced capital expenditures and discretionary spending including compensation, travel and marketing expenses in 2020. Customer demand continued to improve in the first half of

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2021 but remained lower than pre-pandemic levels. We are closely monitoring COVID-19 variants and their potential impact to our business.

About Armstrong and Additional Information

Armstrong World Industries, Inc. (AWI) is a leader in the design and manufacture of innovative commercial and residential ceiling, wall and suspension system solutions in the Americas. With $937 million in revenue in 2020, AWI has approximately 2,800 employees and a manufacturing network of 15 facilities, plus six facilities dedicated to its WAVE joint venture.

More details on the Company’s performance can be found in its report on Form 10-Q for the quarter ended June 30, 2021 that the Company expects to file with the SEC today.

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As Reported Financial Highlights

FINANCIAL HIGHLIGHTS

Armstrong World Industries, Inc. and Subsidiaries

(Amounts in millions, except for per-share amounts, quarterly data is unaudited)

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2021			2020			2021			2020
Net sales	$	280.0		$	203.2		$	531.9		$	451.9
Cost of goods sold		175.1			135.4			339.5			292.8
Gross profit		104.9			67.8			192.4			159.1
Selling, general and administrative expenses		60.0			33.0			114.2			67.8
Change in fair value of contingent consideration		(9.7	)		-			(9.5	)		-
(Gain) related to sale of fixed and intangible assets		-			(14.1	)		-			(14.1	)
Equity earnings from joint venture		(23.7	)		(13.5	)		(44.7	)		(33.0	)
Operating income		78.3			62.4			132.4			138.4
Interest expense		5.6			5.9			11.3			12.6
Other non-operating (income) expense, net		(1.6	)		(4.4	)		(2.9	)		365.0
Earnings (loss) from continuing operations before income taxes		74.3			60.9			124.0			(239.2	)
Income tax expense (benefit)		19.2			11.4			31.4			(66.1	)
Earnings (loss) from continuing operations		55.1			49.5			92.6			(173.1	)
Net gain (loss) from discontinued operations		-			0.8			(2.1	)		(2.8	)
Net earnings (loss)	$	55.1		$	50.3		$	90.5		$	(175.9	)
Diluted earnings (loss) per share of common stock, continuing operations	$	1.14		$	1.03		$	1.92		$	(3.61	)
Diluted earnings (loss) per share of common stock, discontinued operations	$	-		$	0.02		$	(0.04	)	$	(0.06	)
Net earnings (loss) per share of common stock	$	1.14		$	1.05		$	1.88		$	(3.67	)
Average number of diluted common shares outstanding		48.1			48.0			48.1			47.9

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SEGMENT RESULTS

Armstrong World Industries, Inc. and Subsidiaries

(Amounts in millions)

(Unaudited)

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2021			2020		2021			2020
Net Sales
Mineral Fiber	$	208.1		$	157.9	$	396.8		$	355.6
Architectural Specialties		71.9			45.3		135.1			96.3
Total net sales	$	280.0		$	203.2	$	531.9		$	451.9
	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2021			2020		2021			2020
Segment operating income (loss)
Mineral Fiber	$	72.1		$	45.6	$	132.7		$	115.6
Architectural Specialties		7.4			4.3		2.5			11.8
Unallocated Corporate		(1.2	)		12.5		(2.8	)		11.0
Total consolidated operating income	$	78.3		$	62.4	$	132.4		$	138.4

Selected Balance Sheet Information

(Amounts in millions)

	June 30, 2021		December 31, 2020
Assets
Current assets	$	317.5	$	311.8
Property, plant and equipment, net		527.6		529.9
Other noncurrent assets		871.6		876.8
Total assets	$	1,716.7	$	1,718.5
Liabilities and shareholders’ equity
Current liabilities	$	177.6	$	172.3
Noncurrent liabilities		1,040.8		1,095.3
Equity		498.3		450.9
Total liabilities and shareholders’ equity	$	1,716.7	$	1,718.5

Selected Cash Flow Information

(Amounts in millions)

(Unaudited)

	For the Six Months Ended June 30,
	2021			2020
Net earnings (loss)	$	90.5		$	(175.9	)
Other adjustments to reconcile net earnings (loss) to net cash provided by operating activities		9.0			278.7
Changes in operating assets and liabilities, net		(17.6	)		(24.1	)
Net cash provided by operating activities		81.9			78.7
Net cash (used for) provided by investing activities		(6.8	)		10.3
Net cash (used for) financing activities		(93.4	)		(16.7	)
Effect of exchange rate changes on cash and cash equivalents		0.4			(0.5	)
Net (decrease) increase in cash and cash equivalents		(17.9	)		71.8
Cash and cash equivalents at beginning of year		136.9			45.3
Cash and cash equivalents at end of period	$	119.0		$	117.1

6

Supplemental Reconciliations of GAAP to non-GAAP Results (unaudited)

(Amounts in millions, except per share data)

To supplement its consolidated financial statements presented in accordance with accounting principles generally accepted in the United States (“GAAP”), the Company provides additional measures of performance adjusted to exclude the impact of certain discrete expenses and income including adjusted net sales, adjusted EBITDA, adjusted diluted earnings per share (EPS) and adjusted free cash flow.  Investors should not consider non-GAAP measures as a substitute for GAAP measures.  The Company excludes certain acquisition related expenses (i.e. – changes in the fair value of earnouts, deferred compensation accruals, impact of adjustments related to the fair value of inventory and deferred revenue) for recent acquisitions. The deferred compensation accruals are for cash and stock awards that will be recorded over the vesting period, as such payments are subject to the sellers’ and employees’ continued employment with the Company. The Company excludes all acquisition-related intangible amortization from adjusted earnings from continuing operations and in calculations of adjusted diluted earnings per share. Examples of other excluded items include plant closures, restructuring charges and related costs, impairments, separation costs, environmental site expenses and related insurance recoveries, endowment level charitable contributions, and certain other gains and losses. The Company also excludes income/expense from its U.S. Retirement Income Plan (“RIP”) in the non-GAAP results as it represents the actuarial net periodic benefit credit/cost recorded. For all periods presented, the Company was not required and did not make cash contributions to the RIP based on guidelines established by the Pension Benefit Guaranty Corporation, nor does the Company expect to make cash contributions to the plan in 2021. Adjusted free cash flow is defined as cash from operating and investing activities, adjusted to remove the impact of cash used or proceeds received for acquisitions and divestitures, legacy environmental matters and litigation. The Company believes adjusted free cash flow is useful because it provides insight into the amount of cash that the Company generates for discretionary uses, after expenditures for capital investments and adjustments for acquisitions and divestitures. The Company uses these adjusted performance measures in managing the business, including communications with its Board of Directors and employees, and believes that they provide users of this financial information with meaningful comparisons of operating performance between current results and results in prior periods. The Company believes that these non-GAAP financial measures are appropriate to enhance understanding of its past performance, as well as prospects for its future performance.  The Company also uses adjusted EBITDA and adjusted free cash flow as factors in determining at-risk compensation for senior management. These non-GAAP measures may not be defined and calculated the same as similar measures used by other companies.  A reconciliation of these adjustments to the most directly comparable GAAP measures is included in this release and on the Company’s website. These non-GAAP measures should not be considered in isolation or as a substitute for the most comparable GAAP measures. Non-GAAP financial measures utilized by the Company may not be comparable to non-GAAP financial measures used by other companies.

In the following charts, numbers may not sum due to rounding. Non-GAAP figures are rounded to the nearest million and corresponding percentages are rounded to the nearest percent based on unrounded figures.

7

Consolidated Results from Continuing Operations – Adjusted EBITDA

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2021			2020			2021			2020
Earnings (Loss) from continuing operations, Reported	$	55		$	50		$	93		$	(173	)
Add/(Less): Income tax expense (benefit), as reported		19			11			31			(66	)
Earnings (Loss) before tax, Reported	$	74		$	61		$	124		$	(239	)
Add: Interest/other income and expense, net		4			2			8			378
Operating Income, Reported	$	78		$	62		$	132		$	138
Add: RIP expense (1)		1			1			2			3
(Less): Acquisition-related impacts (2)		(6	)		-			(2	)		-
(Less)/Add: Net environmental expenses		-			-			-			1
(Less): Gain on sale of idled China plant facility		-			(14	)		-			(14	)
Operating Income, Adjusted	$	74		$	49		$	133		$	128
Add: Depreciation		16			15			31			29
Add: Amortization		10			5			21			9
Adjusted EBITDA	$	100		$	69		$	185		$	166

(1) RIP expense represents only the plan service cost that is recorded within Operating Income. For all periods presented, we were not required to and did not make cash contributions to our RIP.

(2) Represents the impact of acquisition-related adjustments for the fair value of acquired inventory and deferred revenue, changes in fair value of contingent consideration and deferred compensation and restricted stock expenses.

Mineral Fiber

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
Operating Income, Reported	$	72	$	46	$	133	$	116
Add: Net environmental expenses		-		-		-		1
Operating Income, Adjusted	$	72	$	45	$	133	$	116
Add: D&A		18		17		35		33
Adjusted EBITDA	$	90	$	62	$	168	$	149

Architectural Specialties

	For the Three Months Ended June 30,					For the Six Months Ended June 30,
	2021			2020		2021			2020
Operating Income, Reported	$	7		$	4	$	3		$	12
(Less): Acquisition-related impacts (1)		(6	)		-		(2	)		-
Operating Income, Adjusted	$	2		$	4	$	0		$	12
Add: D&A		8			2		16			4
Adjusted EBITDA	$	10		$	6	$	16		$	16

(1) Represents the impact of acquisition-related adjustments for the fair value of acquired inventory and deferred revenue, changes in fair value of contingent consideration and deferred compensation and restricted stock expenses.

8

Unallocated Corporate

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2021			2020			2021			2020
Operating (Loss) Income, Reported	$	(1	)	$	13		$	(3	)	$	11
Add: RIP expense (1)		1			1			2			3
(Less): Gain on Sale of Idled China Plant Facility		-			(14	)		-			(14	)
Operating (Loss), Adjusted		-			-			-			-
Add: D&A	-			-				-			-
Adjusted EBITDA	$	-		$	-		$	-		$	-

(1) RIP expense represents only the plan service cost that is recorded within Operating Income. For all periods presented, we were not required to and did not make cash contributions to our RIP.

Adjusted Free Cash Flow

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021			2020
Net cash provided by operations	$	62	$	53	$	82		$	79
Net cash provided by (used for) investing activities		2		-		(7	)		10
Add: Payments related to sale of international, net		-		10		12			10
Add: Environmental payments, net		-		-		-			1
Adjusted Free Cash Flow	$	64	$	63	$	87		$	100

Consolidated Results from Continuing Operations – Adjusted Diluted Earnings Per Share

	For the Three Months Ended June 30,										For the Six Months Ended June 30,
	2021					2020					2021					2020
	Total			Per Diluted Share		Total			Per Diluted Share		Total			Per Diluted Share		Total			Per Diluted Share
Earnings (Loss) from continuing operations, As Reported	$	55		$	1.14	$	50		$	1.03	$	93		$	1.92	$	(173	)	$	(3.61	)
Add/(Less): Income tax expense (benefit), as reported		19				$	11					31				$	(66	)
Earnings (Loss) from continuing operations before income taxes, As Reported		74				$	61				$	124				$	(239	)
(Less)/Add: RIP (credit) expense (1)		-					(2	)				-					370
(Less): Acquisition-related impacts (2)		(6	)			-						(2	)			-
Add: Acquisition related amortization (3)		7					1					14					2
(Less)/Add: Net environmental expenses		-					-					-					1
(Less): Gain on sale of idled China plant facility		-					(14	)				-					(14	)
Adjusted earnings from continuing operations before income taxes	$	75				$	46				$	136				$	119
(Less): Adjusted income tax expense (4)		(19	)				(11	)				(34	)				(29	)
Adjusted net income	$	56		$	1.16	$	35		$	0.72	$	101		$	2.11	$	90		$	1.86
Adjusted EPS change versus Prior Year	61%										13%
Diluted Shares Outstanding (5)	48.1					48.0					48.1					48.4
Adjusted Tax Rate (6)	26%					24%					25%					25%

9

(1) RIP expense (credit) represents the entire actuarial net periodic pension expense (credit) recorded as a component of earnings from continuing operations. For all periods presented, we were not required to and did not make cash contributions to our RIP.

(2) Represents the impact of acquisition-related adjustments for the fair value of acquired inventory and deferred revenue, changes in fair value of contingent consideration and deferred compensation accruals.

(3)   Represents the intangible amortization related to acquired entities, including customer relationships, developed technology, software, trademarks and brand names, non-compete agreements and other intangibles.

(4) Adjusted income tax expense is calculated using the adjusted tax rate multiplied by the adjusted earnings from continuing operations before income taxes.

(5) Dilutive shares are as-reported. 2020 dilutive shares outstanding for the six months ended June 30, 2020 include anti-dilutive common stock equivalents which are excluded from U.S. GAAP Accounting.

(6) The tax rate for the three and six months ended June 30, 2020 excludes the first quarter 2020 pension annuitization and the gain on the sale of our idled China facility.

Adjusted EBITDA Guidance

	For the Year Ending December 31, 2021
	Low				High
Net income	$	190		to	$	198
Add: Interest expense		25				25
(Less): RIP credit (1)		(8	)			(8	)
Add: Income Tax Expense		61				63
Operating income	$	267		to	$	277
Add: RIP expense (2)		5				5
Add: Depreciation		63				63
Add: Amortization		35				35
Adjusted EBITDA	$	370		to	$	380

(1) RIP credit represents the actuarial net periodic benefit expected to be recorded as a component of other non-operating income. We do not expect to and do not plan to make cash contributions to our RIP in 2021 based on guidelines established by the Pension Benefit Guaranty Corporation.

(2) RIP expense represents only the plan service cost that is recorded within Operating Income. For all periods presented, we were not required and did not make cash contributions to our RIP.

Adjusted Diluted Earnings Per Share (EPS) Guidance

	For the Year Ending December 31, 2021
	Low			Per Diluted Share(1)			High			Per Diluted Share(1)
Net income	$	190		$	3.96	to	$	198		$	4.12
Add: Interest expense		25						25
(Less): RIP Credit (2)		(8	)					(8	)
Add: Income tax Expense		61						63
Operating income	$	267				to	$	277
Add: RIP expense (3)		5						5
(Less): Interest expense		(25	)					(25	)
Add: Acquisition related amortization (4)		21						21
Adjusted earnings before income taxes	$	269				to	$	279
(Less): Income tax expense (5)		(67	)					(70	)
Adjusted net income	$	201		$	4.20	to	$	209		$	4.40

(1) Adjusted EPS guidance for 2021 is calculated based on an adjusted effective tax rate of 25% and based on ~48 million of diluted shares outstanding.

(2) RIP credit represents the actuarial net periodic benefit expected to be recorded as a component of other non-operating income. We do not expect to be required to make, nor do we plan to make cash contributions to our RIP based on guidelines established by the Pension Benefit Guaranty Corporation.

(3) RIP expense represents only the plan service cost related to the U.S. pension plan and is recorded as a component of operating income. We do not expect to be required to make, nor do we plan to make cash contributions to our RIP based on guidelines established by the Pension Benefit Guaranty Corporation.

(4) Represents the intangible amortization related to acquired entities, including customer relationships, developed technology, software, trademarks and brand names, non-compete agreements and other intangibles.

(5)   Adjusted income tax expense is based on adjusted earnings before income tax.

10

Adjusted Free Cash Flow Guidance

	For the Year Ending December 31, 2021
	Low				High
Net cash provided by operating activities	$	200		to	$	210
Add: Return of investment from joint venture		75				85
Adjusted net cash provided by operating activities	$	275		to	$	295
Less: Capital expenditures		(80	)			(85	)
Adjusted Free Cash Flow	$	195		to	$	210

11

EX-99.2

Earnings Call Presentation 2nd Quarter 2021 July 27, 2021 Exhibit 99.2

Safe Harbor Statement Our disclosures in this presentation, including without limitation, those relating to future financial results market conditions and guidance, the impacts of COVID-19 on our business, and in our other public documents and comments contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act. Those statements provide our future expectations or forecasts and can be identified by our use of words such as “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe,” “outlook,” “target,” “predict,” “may,” “will,” “would,” “could,” “should,” “seek,” and other words or phrases of similar meaning in connection with any discussion of future operating or financial performance. Forward-looking statements, by their nature, address matters that are uncertain and involve risks because they relate to events and depend on circumstances that may or may not occur in the future. As a result, our actual results may differ materially from our expected results and from those expressed in our forward-looking statements. A more detailed discussion of the risks and uncertainties that may affect our ability to achieve the projected performance is included in the “Risk Factors” and “Management’s Discussion and Analysis” sections of our reports on Form 10-K and 10-Q filed with the U.S. Securities and Exchange Commission (“SEC”). Forward-looking statements speak only as of the date they are made. We undertake no obligation to update any forward-looking statements beyond what is required under applicable securities law. In addition, we will be referring to non-GAAP financial measures within the meaning of SEC Regulation G. A reconciliation of the differences between these measures with the most directly comparable financial measures calculated in accordance with GAAP are included within this presentation and available on the Investor Relations page of our website at www.armstrongceilings.com. The guidance in this presentation is only effective as of the date given, July 27, 2021 and will not be updated or affirmed unless and until we publicly announce updated or affirmed guidance.

Basis of Presentation Explanation All figures throughout the presentation are in $ millions and all comparisons are versus prior year unless otherwise noted. Figures may not sum due to rounding. When reporting our financial results within this presentation, we make several adjustments. Management uses these non-GAAP measures in managing the business and believes the adjustments provide meaningful comparisons of operating performance between periods. As reported results will be footnoted throughout the presentation on a continuing operations basis (excludes corporate unallocated). Results throughout this presentation are presented on a normalized basis. We remove the impact of certain discrete expenses and income in certain measures including adjusted net sales, adjusted EBITDA, adjusted earnings per share (EPS) and adjusted free cash flow. The Company excludes certain acquisition related expenses (i.e. – changes in the fair value of earnouts, deferred compensation accruals(1), impact of adjustments related to the fair value of inventory and deferred revenue) for recent acquisitions. The Company excludes all acquisition-related amortization from adjusted earnings from continuing operations and in calculations of adjusted diluted earnings per share. Examples of other excluded items include plant closures, restructuring actions and related costs, impairments, separation costs, environmental site expenses and related insurance recoveries, endowment level charitable contributions, and other large unusual items. We also adjust for our U.S. pension plan (credit) expense(2). Our tax rate may be adjusted for certain discrete items which are identified in the footnotes. Investors should not consider non-GAAP measures as a substitute for GAAP measures. The deferred compensation accruals are for cash and stock awards that will be recorded over the vesting period, as such payments are subject to the sellers’ and employees’ continued employment with the Company. U.S. pension (credit) expense represents the actuarial net periodic benefit cost expected to be recorded as a component of earnings from continuing operations. For all periods presented, we were not required to and did not make cash contributions to our U.S. Retirement Income Plan based on guidelines established by the Pension Benefit Guaranty Corporation.

+32% +59% Second-Quarter 2021 Highlights Strong performance and momentum supports increased guidance Net Sales Adjusted EBITDA* +44% Strong year-over-year and sequential improvements in sales and earnings Average Unit Value (AUV) up 10% on both price and mix improvements; pricing actions offsetting inflation pressures Increasing full-year 2021 guidance Strong operations and service performance despite challenged supply chains in the industry *Non-GAAP measure. See appendix for reconciliation to nearest GAAP measure. $203 $280

Second Quarter 2021 Consolidated Company Key Metrics As defined by the terms of our credit agreement. Excludes change in depreciation Excludes change in amortization $35 $69 $100 *Non-GAAP measure. See appendix for reconciliation to nearest GAAP measure.

Mineral Fiber Second Quarter 2021 Results Price over inflation & sales per shipping day improvement continues Key Highlights Volumes surged on more normalized demand vs. peak impacts from COVID-19 in prior-year period Fourth consecutive quarter of sequential improvement in sales per shipping day AUV up 10% vs. Q2 2020 on positive like-for-like pricing and territory mix improvements Strong performance from WAVE JV *Non-GAAP measure. See appendix for reconciliation to nearest GAAP measure.

Architectural Specialties Second Quarter 2021 Results Organic growth and 2020 Acquisitions contribute to solid performance Key Highlights *AS organic excludes 2020 Acquisitions of Turf, Moz, Arktura. **Non-GAAP measure. See appendix for reconciliation to nearest GAAP measure. 2020 Acquisitions added $17 million in sales Organic* sales up 20% or $9 million driven by diminished Covid-19 impacts vs. prior year Adjusted EBITDA** up 48% vs. prior year Adjusted EBITDA** margin expanded 255 bps sequentially Growth investments in capabilities and capacity across the segment continued

Consolidated Company Key Metrics – 1st Half 2021 Excludes change in depreciation Excludes change in amortization ($9) ($3) $15 $34 *Non-GAAP measure. See appendix for reconciliation to nearest GAAP measure.

Adjusted Free Cash Flow* Bridge – Q2 YTD 2021 vs. PY ($12) Cash earnings decline driven by higher, planned CapEx vs. 2020 $1 $2 ($7) (1) Includes cash earnings, working capital and other current assets and liabilities $87 $4 *Non-GAAP measure. See appendix for reconciliation to nearest GAAP measure.

2021 Guidance – July Update ⁽¹⁾ $3.74 Adjusted EBITDA* Adjusted EPS* Adjusted Free Cash Flow* Revenue $937 $330 MF AUV 6%-9%, positive like-for-like pricing & mix Growth Initiatives, primarily kanopi & Healthy Spaces, drive MF volume up 2% - 4% 2020 acquisitions benefit AS 20% - 25% AUV and volume gains fall through Manufacturing productivity and improved earnings from WAVE drive margin improvement Includes benefit of 2020 acquisitions Investment in growth initiatives continues in 2021 $80-$85 million of Cap Ex $25 million of cash interest expense Cash tax rate 20% - 25% Higher Working Capital due to increased sales 2020 Actual Current Guidance $25 million of interest expense 25% book tax rate ~$63 million depreciation, ~$35 million amortization 48 million average diluted shares outstanding Excludes $21 million of acquisition amortization $212 *Non-GAAP measure. See appendix for reconciliation to nearest GAAP measure. Adjusted EPS excludes $0.11 in relation to acquisition-related amortization in 2020. ⁽¹⁾Assumes no significant pandemic-related shutdowns or project delays due to supply chain disruptions. Updated from prior guide Prior Guidance

Clear Strategy Driving Value Creation Consistent strategic priorities enabling shareholder value creation Strategic Overview Healthy Spaces to drive renovation “renaissance” Product innovation to meet new customer needs and improve product mix kanopi e-commerce platform for new demand Continued integration of acquisitions Robust pipeline of additional opportunities Leverage new design capabilities across platform Mineral Fiber volume growth of 0% to 2% and AUV growth of 3% to 6% 10-3-1 path from optimization to disruption Digital platforms to reduce friction with customers Focus on productivity and scalability Consistent capex Invest for growth and productivity Return to shareholders via dividends and buybacks >15% Architectural Specialties top-line growth with margin expansion Declining net debt and adjusted FCF ~20% of sales Critical enabler for sales, productivity and efficiency improvements Value Creation Model* *Current management estimates; reflects medium-to-long term annual growth targets

Appendix

Adjusted EBITDA Reconciliation RIP expense represents only the plan service cost that is recorded within Operating Income. For all periods presented, we were not required to and did not make cash contributions to our RIP. Represents the impact of acquisition-related adjustments for the fair value of acquired inventory and deferred revenue, changes in fair value of contingent consideration and deferred compensation and restricted stock expenses.

Adjusted Diluted Earnings Per Share Reconciliation (1) RIP expense (credit) represents the entire actuarial net periodic pension expense (credit) recorded as a component of earnings from continuing operations. For all periods presented, we were not required to and did not make cash contributions to our RIP. (2) Represents the impact of acquisition-related adjustments for the fair value of acquired inventory and deferred revenue, changes in fair value of contingent consideration and deferred compensation accruals. (3) Represents the intangible amortization related to acquired entities, including customer relationships, developed technology, software, trademarks and brand names, non-compete agreements and other intangibles. (4) Adjusted income tax expense is calculated using the adjusted tax rate multiplied by the adjusted earnings from continuing operations before income taxes. (5) Dilutive shares are as-reported. 2020 dilutive shares outstanding for the six months ended June 30, 2020 include anti-dilutive common stock equivalents which are excluded from U.S. GAAP Accounting. (6) The tax rate for the three and six months ended June 30, 2020 excludes the first quarter pension annuitization and the gain on the sale of our idled China facility.

Adjusted Free Cash(1) Flow Reconciliation Adjusted free cash flow is defined as cash from operations and dividends received from the WAVE joint venture, less expenditures for property and equipment, and is adjusted to remove the impact of cash used or proceeds received for acquisitions and divestitures, legacy environmental matters and litigation. The Company believes adjusted free cash flow is useful because it provides insight into the amount of cash that the Company has available for discretionary uses, after expenditures for capital commitments and adjustments for acquisitions and divestitures. Free cash flow includes discontinued international operations.

Segment Reported Operating Income (Loss) to Adjusted EBITDA RIP expense represents only the plan service cost related to the RIP that is recorded within Operating Income. For all periods presented, we were not required to and did not make cash contributions to our RIP. Represents the impact of acquisition-related adjustments for the fair value of acquired inventory and deferred revenue, changes in fair value of contingent consideration and deferred compensation accruals.

Adjusted Net Sales Reconciliation Represents the impact of acquisition-related deferred revenue adjustments to fair value.

2021 Adjusted EBITDA Guidance Reconciliation Adjusted EBITDA RIP credit represents the actuarial net periodic benefit expected to be recorded as a component of other non-operating income. We do not expect to be and do not plan to make cash contributions to our U.S. Retirement Income Plan based on guidelines established by the Pension Benefit Guaranty Corporation. RIP expense represents only the service cost related to the U.S. pension plan that is recorded within Operating Income. For all periods presented, we were not required to and did not make cash contributions to our U.S. Retirement Income Plan.

2021 Adjusted EPS Guidance Reconciliation Adjusted Diluted Earnings Per Share Adjusted EPS guidance for 2021 is calculated based on an adjusted effective tax rate of 25% and based on ~48 million of diluted shares outstanding. RIP credit represents the actuarial net periodic benefit expected to be recorded as a component of other non-operating income. We do not expect to be required to make, nor do we plan to make cash contributions to our U.S. Retirement Income Plan based on guidelines established by the Pension Benefit Guaranty Corporation. RIP expense represents only the service cost related to the U.S. pension plan and is recorded as a component of operating income. We do not expect to be required to make, nor do we plan to make cash contributions to our U.S. Retirement Income Plan based on guidelines established by the Pension Benefit Guaranty Corporation. Represents the intangible amortization related to acquired entities, including customer relationships, developed technology, software, trademarks and brand names, non-compete agreements and other intangibles. Adjusted income tax expense is based adjusted earnings before income tax.

2021 Adjusted Free Cash Flow Guidance Reconciliation Adjusted Free Cash Flow

XML

Document And Entity Information	Jul. 27, 2021
Cover [Abstract]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Jul. 27, 2021
Entity Registrant Name	ARMSTRONG WORLD INDUSTRIES, INC.
Entity Central Index Key	0000007431
Entity Emerging Growth Company	false
Entity File Number	1-2116
Entity Tax Identification Number	23-0366390
Entity Address, Address Line One	2500 Columbia Avenue P.O. Box 3001
Entity Address, City or Town	Lancaster
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	17603
City Area Code	(717)
Local Phone Number	397-0611
Entity Incorporation, State or Country Code	PA
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	AWI
Security Exchange Name	NYSE