AWI / Armstrong World Industries, Inc. - SEC Filings, Annual Report, Proxy Statement

Armstrong World Industries, Inc.
US ˙ NYSE ˙ US04247X1028

Basic Stats
LEI KXMRXXOJ88Q45Y45MG74
CIK 7431
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Armstrong World Industries, Inc.
SEC Filings (Chronological Order)
This page provides a complete, chronological list of SEC Filings, excluding ownership filings which we provide elsewhere.
September 3, 2025 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): September 3, 2025 ARMSTRONG WORLD

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): September 3, 2025 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

September 3, 2025 EX-99.1

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

Armstrong World Industries Investor Presentation September 2025 Exhibit 99.1 Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, market and broader economic conditions and guidance. Those statemen

July 29, 2025 EX-99.2

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

2nd Quarter 2025 Earnings Presentation July 29, 2025 Exhibit 99.2 Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, market and broader economic conditions and guidance. Those statements provide

July 29, 2025 EX-99.1

Armstrong World Industries Reports Record Second-Quarter 2025 Sales and Earnings

Exhibit 99.1 Armstrong World Industries Reports Record Second-Quarter 2025 Sales and Earnings • Quarterly net sales increased 16% to $425 million with a 7% increase in Mineral Fiber net sales and a 37% increase in Architectural Specialties net sales • Operating income increased 30% and diluted net earnings per share increased 34% • Adjusted EBITDA up 23% and adjusted diluted net earnings per share

July 29, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

July 29, 2025 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 29, 2025 ARMSTRONG WORLD IND

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 29, 2025 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 o

July 23, 2025 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 23, 2025 ARMSTRONG WORLD IND

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 23, 2025 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 o

July 23, 2025 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., July 23, 2025 – Armstrong World Industries, Inc. (NYSE:AWI), an Americas leader in the design and manufacture of innovative interior and exterior architectural applications including ceilings, specialty walls and exterior metal solutions, announced today that its Board of Directors has declared a cash dividend of

June 17, 2025 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): June 12, 2025 ARMSTRONG WORLD IND

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): June 12, 2025 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 o

May 28, 2025 EX-1.01

Conflict Minerals Report of Armstrong World Industries, Inc.

Exhibit 1.01 Armstrong World Industries, Inc. Conflict Minerals Report For the Year Ended December 31, 2024 Armstrong World Industries, Inc. (“AWI”) is a Pennsylvania corporation incorporated in 1891. We are a leader in the design, innovation and manufacture of interior and exterior architectural applications including ceilings, specialty walls and exterior metal solutions. We manufacture and sour

May 28, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-02116 23-0366390 (State or other jurisdiction of incorporation or organization) (Commission file number) (I.R.S. Employer Identification No.) 2500 Columbia Avenue, Lancaster, Pennsylvania

May 8, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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): May 8, 2025 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 org

May 8, 2025 EX-99.1

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

Armstrong World Industries Investor Presentation May 2025 Exhibit 99.1 Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, market and broader economic conditions and guidance. Those statements pro

April 29, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): April 29, 2025 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

April 29, 2025 EX-99.1

Armstrong World Industries Reports Record-Setting First-Quarter 2025 Results

Exhibit 99.1 Armstrong World Industries Reports Record-Setting First-Quarter 2025 Results • Net sales up 17% on benefits from 2024 acquisitions and strong Mineral Fiber Average Unit Value (AUV) growth • Operating income increased 14% and diluted net earnings per share increased 16% • Adjusted EBITDA up 16% and adjusted diluted net earnings per share up 20% • Reaffirming 2025 guidance across all ke

April 29, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

April 29, 2025 EX-99.2

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

1st Quarter 2025 Earnings Presentation April 29, 2025 Exhibit 99.2 Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, market and broader economic conditions and guidance. Those statements provide

April 28, 2025 DEF 14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒       Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

April 28, 2025 DEFA14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒        Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

April 23, 2025 8-K

Financial Statements and Exhibits, Other Events

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): April 23, 2025 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

April 23, 2025 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., April 23, 2025 – Armstrong World Industries, Inc. (NYSE:AWI), an Americas leader in the design and manufacture of innovative interior and exterior architectural applications including ceilings, specialty walls and exterior metal solutions, announced today that its Board of Directors has declared a cash dividend of

April 2, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): March 31, 2025 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

March 10, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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): March 10, 2025 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

March 10, 2025 EX-99.1

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

Armstrong World Industries Investor Presentation March 2025 Exhibit 99.1 Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, market and broader economic conditions and guidance. Those statements p

February 25, 2025 EX-10.16

Form of Long-Term Performance-Based Restricted Stock Unit Grant for 2023 and 2024 under the 2022 Equity and Cash Incentive Plan.*†

Exhibit No. 10.16 Certain information has been excluded from this exhibit because it is not material and would likely cause competitive harm to the company if publicly disclosed. Redacted information is indicated by brackets. Consolidated Form of Long-Term Performance-Based Restricted Stock Unit Grant Company Confidential ARMSTRONG WORLD INDUSTRIES 2500 Columbia Ave., P.O. Box 3001 Lancaster, PA 1

February 25, 2025 EX-10.33

Offer Letter to Jill Crager Dated November 14, 2021.*†

Exhibit No. 10.33 November 14, 2021 Personal & Confidential Jill Crager Dear Jill, Congratulations. I am pleased to confirm the compensation details of your assignment to Senior Vice President Sales Operations of Armstrong World Industries (AWI) effective January 1, 2022. Compensation Terms: Effective January 1, 2022, you will earn a semi-monthly gross base salary of $12,500, or $300,000 annualize

February 25, 2025 EX-21

Armstrong World Industries, Inc.’s Subsidiaries.†

Exhibit No. 21 Subsidiaries of Armstrong World Industries, Inc. December 31, 2024 The following is a list of subsidiaries of Armstrong World Industries, Inc., omitting certain subsidiaries, which, when not considered in the aggregate, but as a single subsidiary, would not constitute a significant subsidiary. U.S. Subsidiaries Jurisdiction of Incorporation Armstrong Cork Finance LLC Delaware Armstr

February 25, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-2116 ARMSTRONG WORLD IN

February 25, 2025 EX-19

Trading in Company Securities By Employees, Officers and Directors.*†

Exhibit No. 19 TRADING IN SECURITIES BY EMPLOYEES, OFFICERS, DIRECTORS AND OTHERS (Company Policy CP-70.D) This is a Company Policy of Armstrong World Industries, Inc. (“Armstrong”). It applies to you, in your capacity as an Armstrong employee, and to all employees, directors, and officers of Armstrong and its subsidiaries worldwide, and others as set forth below. 1. PURPOSE AND OBJECTIVES We must

February 25, 2025 EX-99.2

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

4th Quarter and Full Year 2024 Earnings Presentation February 25, 2025 Exhibit 99.

February 25, 2025 EX-10.12

Nonqualified Deferred Compensation Plan effective January 2005, as amended July 23, 2010 and January 1, 2014.*†

Exhibit No. 10.12 Plan Document Amended as of January 1, 2014 ARMSTRONG NONQUALIFIED DEFERRED COMPENSATION PLAN The Armstrong Nonqualified Deferred Compensation Plan (the "Plan") was established by the Retirement Committee of Armstrong World Industries, Inc. effective January 1, 2005. The Plan was most recently amended and restated effective January 1, 2014. The Plan is a nonqualified deferred com

February 25, 2025 EX-4.1

Description of Securities Registered under Section 12 of the Securities Exchange Act of 1934.†

Exhibit No. 4.1 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following is a summary description of the common shares, par value $0.01 per share (“common stock”) of Armstrong World Industries, Inc., a Pennsylvania corporation (the “Company”, “we”, “us” or “our”), which is the only class of securities of the Company registered under Section 12 of t

February 25, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 25, 2025 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

February 25, 2025 EX-99.1

Worthington Armstrong Venture consolidated financial statements as of December 31, 2024 and 2023 and for the years ended December 31, 2024, 2023 and 2022.†

Exhibit No. 99.1 WORTHINGTON ARMSTRONG VENTURE Consolidated Financial Statements December 31, 2024 and 2023 (With Independent Auditors’ Report Thereon) WORTHINGTON ARMSTRONG VENTURE Table of Contents Page Independent Auditors’ Report 1-2 Consolidated Balance Sheets, December 31, 2024 and 2023 3 Consolidated Statements of Income and Comprehensive Income, Years ended December 31, 2024, 2023, and 202

February 25, 2025 EX-14

The Armstrong Code of Business Conduct.†

Code of Business Conduct Exhibit No. 14 Table of Contents CEO Message Our Vision, Mission & Operating Principles Our Responsibility to Ourselves Compliance with Laws Responsibility of Employees Additional Responsibilities of Managers Speaking Up Asking Questions & Raising Concerns Resources for Getting Help or Raising a Concern Confidentiality No Retaliation Reporting Our Own Mistakes 11 Our Respo

February 25, 2025 EX-10.32

Offer Letter to Dawn Kirchner-King date March 22, 2024.*†

Exhibit No. 10.32 Armstrong World Industries, Inc. 2500 Columbia Ave. Lancaster, PA 17604 March 22, 2024 Personal & Confidential Dawn Kirchner King Dear Dawn, On behalf of Armstrong World Industries, Inc. (“AWI”), I am pleased to confirm our offer of employment to you for the position of SVP Chief Human Resources Officer. This position is based in Lancaster, PA, reporting to me. Your anticipated s

February 25, 2025 EX-99.1

Armstrong World Industries Reports Record-Setting Fourth-Quarter and Full-Year 2024 Results

Exhibit 99.1 Armstrong World Industries Reports Record-Setting Fourth-Quarter and Full-Year 2024 Results Fourth-Quarter 2024 • Net sales of $368 million, an increase of 18% • Operating income increased 24% and diluted net earnings per share increased 34% • Adjusted EBITDA up 14% and adjusted diluted net earnings per share up 23% • Completed acquisition of A. Zahner Company ("Zahner") Full-Year 202

February 25, 2025 EX-10.17

Form of Long-Term Time- Based Restricted Stock Unit Grant for 2023 and 2024 under the 2022 Equity and Cash Incentive Plan.*†

EX-10.17 5 awi-ex1017.htm EX-10.17 Exhibit No. 10.17 Long-Term Time-Based Restricted Stock Unit Grant Participant Name (First, Middle & Last) I am pleased to inform you that the Company’s Management Development and Compensation Committee granted you the following: Date of Grant: [Grant Date] Time-Based Restricted Stock Units: [Number of Shares Granted ] This grant is subject to the terms of the Eq

February 25, 2025 EX-10.31

Release Agreement with Monica Maheshwari dated February 20, 2024.* †

Exhibit No. 10.31 EXHIBIT 1 SECOND RELEASE AGREEMENT THIS SECOND RELEASE AGREEMENT (the “Second Release”) is made as of this 20th day of February, 2024, by and between Monica M. Maheshwari (“Executive”) and Armstrong World Industries, Inc. (the “Company”). 1. FOR AND IN CONSIDERATION of the payments and benefits provided in the Severance Agreement between Executive and the Company dated as of Marc

February 19, 2025 8-K

Financial Statements and Exhibits, Other Events

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): February 19, 2025 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

February 19, 2025 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., Feb. 19, 2025 – Armstrong World Industries, Inc. (NYSE:AWI), an Americas leader in the design and manufacture of innovative interior and exterior architectural applications including ceilings, specialty walls and exterior metal solutions, announced today that its Board of Directors has declared a cash dividend to

December 4, 2024 EX-99.1

Armstrong World Industries Expands Exterior Architectural Metal Capabilities with Acquisition of A. Zahner Company

Exhibit 99.1 Armstrong World Industries Expands Exterior Architectural Metal Capabilities with Acquisition of A. Zahner Company LANCASTER, Pa. (Dec. 4, 2024) — Armstrong World Industries. Inc. (NYSE: AWI), a leader in the innovation and manufacture of ceiling and wall solutions, announced today that it has acquired A. Zahner Company (Zahner). Based in Kansas City, Mo., Zahner is a widely recognize

December 4, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

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): December 2, 2024 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

December 4, 2024 EX-99.2

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

Armstrong World Industries Acquires A. Zahner Company, LLC (“Zahner®”) December 4, 2024 Exhibit 99.2 Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, market and broader economic conditions and

October 29, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

October 29, 2024 EX-99.1

Armstrong World Industries Reports Third-Quarter 2024 Results

Exhibit 99.1 Armstrong World Industries Reports Third-Quarter 2024 Results • Record setting quarterly net sales of $387 million, an increase of 11% • Operating income increased 11% and diluted net earnings per share increased 12% • Adjusted EBITDA up 11% and adjusted diluted net earnings per share up 13% • Raising full-year 2024 guidance for adjusted EBITDA, adjusted diluted net earnings per share

October 29, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 29, 2024 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

October 29, 2024 EX-99.2

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

3rd Quarter 2024 Earnings Presentation October 29, 2024 Exhibit 99.2 Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, market and broader economic conditions and guidance. Those statements provi

October 23, 2024 EX-99.1

Armstrong World Industries Announces Increase in Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Increase in Quarterly Dividend LANCASTER, Pa., Oct. 23, 2024 – Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, announced today that its Board of Directors has approved a 10% increase in the company’s quarterly cash dividend to $0.308 per share of common stock. The divide

October 23, 2024 8-K

Financial Statements and Exhibits, Other Events

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): October 23, 2024 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

August 21, 2024 EX-99.1

Safe Harbor Statement 1. Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those

Armstrong World Industries Investor Presentation August 2024 Exhibit 99.1 Safe Harbor Statement 1. Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings from

August 21, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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): August 21, 2024 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

July 30, 2024 EX-99.1

Armstrong World Industries Reports Second-Quarter 2024 Results

Exhibit 99.1 Armstrong World Industries Reports Second-Quarter 2024 Results • Net sales up 12% on solid Mineral Fiber AUV growth and Architectural Specialties' acquisitions • Operating income increased 9% and diluted net earnings per share increased 12% • Adjusted EBITDA up 13% and adjusted diluted net earnings per share up 17% • Raising full-year 2024 guidance (All comparisons versus the prior ye

July 30, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

July 30, 2024 8-K

Regulation FD Disclosure, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 30, 2024 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 o

July 30, 2024 EX-3.1

Amended and Restated Bylaws of Armstrong World Industries, Inc., are incorporated by reference from the Current Report on Form 8-K filed on July 30, 2024, wherein it appeared as Exhibit 3.1

AMENDED AND RESTATED BYLAWS of ARMSTRONG WORLD INDUSTRIES, INC. (A Pennsylvania corporation) Exhibit 3.1 As in effect on October 2, 2006 and as amended August 5, 2010, July 25, 2014, December 5, 2017, April 17, 2020, April 19, 2023 and July 24, 2024 ARTICLE I Certain Definitions; Principal Office; Notices to the Corporation SECTION 1. Certain Definitions. Unless the context otherwise requires, the

July 30, 2024 EX-99.2

Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those re

2nd Quarter 2024 Earnings Presentation July 30, 2024 Exhibit 99.2 Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings from cost manag

July 24, 2024 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., July 24, 2024 – Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, announced today that its Board of Directors has declared a cash dividend of $0.28 per share of common stock. The dividend will be paid on August 22, 2024, to stockholders o

July 24, 2024 8-K

Financial Statements and Exhibits, Other Events

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 24, 2024 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 o

June 17, 2024 8-K

Other Events, Submission of Matters to a Vote of Security Holders

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): June 13, 2024 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 o

May 31, 2024 EX-1.01

Conflict Minerals Report of Armstrong World Industries, Inc.

Exhibit 1.01 Armstrong World Industries, Inc. Conflict Minerals Report For the Year Ended December 31, 2023 Armstrong World Industries, Inc. (“AWI”) is a Pennsylvania corporation incorporated in 1891. We are a leader in the design, innovation and manufacture of ceiling and wall solutions in the Americas. Our products primarily include mineral fiber, fiberglass wool, metal, wood, wood fiber, glass-

May 31, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-02116 23-0366390 (State or other jurisdiction of incorporation or organization) (Commission file number) (I.R.S. Employer Identification No.) 2500 Columbia Avenue, Lancaster, Pennsylvania

May 10, 2024 SC 13G/A

AWI / Armstrong World Industries, Inc. / Capital International Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* Armstrong World Industries, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 04247X102 (CUSIP Number) April 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropri

April 30, 2024 EX-99.2

Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those re

1st Quarter 2024 Earnings Presentation April 30, 2024 Exhibit 99.2 Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings from cost mana

April 30, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

April 30, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): April 30, 2024 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

April 30, 2024 EX-10.1

Offer Letter to Dawn Kirchner-King dated March 22, 2024. *†

Exhibit No. 10.1 Armstrong World Industries, Inc. 2500 Columbia Ave. Lancaster, PA 17604 March 22, 2024 Personal & Confidential Dear Dawn, On behalf of Armstrong World Industries, Inc. (“AWI”), I am pleased to confirm our offer of employment to you for the position of SVP Chief Human Resources Officer. This position is based in Lancaster, PA, reporting to me. Your anticipated start date is April 2

April 30, 2024 EX-99.1

Armstrong World Industries Reports Record-Setting First-Quarter 2024 Results

Exhibit 99.1 Armstrong World Industries Reports Record-Setting First-Quarter 2024 Results • Net sales up 5% with mid-single digit growth in both Mineral Fiber and Architectural Specialties segments versus the prior-year period • Operating income increased 23% and diluted net earnings per share increased 31% versus the prior-year period • Adjusted EBITDA up 16% and adjusted diluted net earnings per

April 29, 2024 EX-99.1

Armstrong World Industries Expands Architectural Specialties Portfolio with Acquisition of Architectural Resin Leader 3form, LLC

Exhibit 99.1 Armstrong World Industries Expands Architectural Specialties Portfolio with Acquisition of Architectural Resin Leader 3form, LLC LANCASTER, Pa. (April 29, 2024) — Armstrong World Industries. Inc. (NYSE:AWI), a leader in the innovation and manufacture of ceiling and wall solutions, announced today that it has acquired 3form, LLC. Based in Salt Lake City, Utah, 3form is a leading design

April 29, 2024 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): April 29, 2024 ARMSTRONG WORLD IN

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): April 29, 2024 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

April 29, 2024 DEFA14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒        Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

April 29, 2024 DEF 14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒        Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

April 24, 2024 8-K

Financial Statements and Exhibits, Other Events

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): April 24, 2024 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

April 24, 2024 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., April 24, 2024 – Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, announced today that its Board of Directors has declared a cash dividend of $0.28 per share of common stock. The dividend will be paid on May 23, 2024, to stockholders of

February 20, 2024 EX-10.13

Nonqualified Deferred Compensation Plan effective January 2005, as amended July 23, 2010 and January 1, 2014.*†

Exhibit No. 10.13 Plan Document Amended as of January 1, 2014 ARMSTRONG NONQUALIFIED DEFERRED COMPENSATION PLAN The Armstrong Nonqualified Deferred Compensation Plan (the "Plan") was established by the Retirement Committee of Armstrong World Industries, Inc. effective January 1, 2005. The Plan was most recently amended and restated effective January 1, 2014. The Plan is a nonqualified deferred com

February 20, 2024 EX-10.30

Offer Letter to Monica Maheshwari dated January 20, 2023.*†

Exhibit No. 10.30 Armstrong World Industries, Inc. 2500 Columbia Ave. Lancaster, PA 17604 January 20, 2023 Personal & Confidential Dear Monica, On behalf of Armstrong World Industries, Inc. (“AWI”), I am pleased to confirm our offer of employment to you for the position of SVP Human Resources. This position is based in Lancaster, PA, reporting to me. Your anticipated start date is March 1, 2023. C

February 20, 2024 EX-21

Armstrong World Industries, Inc.’s Subsidiaries.†

Exhibit No. 21 Subsidiaries of Armstrong World Industries, Inc. December 31, 2023 The following is a list of subsidiaries of Armstrong World Industries, Inc., omitting certain subsidiaries, which, when not considered in the aggregate, but as a single subsidiary, would not constitute a significant subsidiary. U.S. Subsidiaries Jurisdiction of Incorporation Armstrong Cork Finance LLC Delaware Armstr

February 20, 2024 EX-99.1

Worthington Armstrong Venture consolidated financial statements as of December 31, 2023 and 2022 and for the years ended December 31, 2023, 2022 and 2021.†

Exhibit No. 99.1 WORTHINGTON ARMSTRONG VENTURE Consolidated Financial Statements December 31, 2023 and 2022 (With Independent Auditors’ Report Thereon) WORTHINGTON ARMSTRONG VENTURE Table of Contents Page Independent Auditors’ Report 1-2 Consolidated Balance Sheets, December 31, 2023 and 2022 3 Consolidated Statements of Income and Comprehensive Income, Years ended December 31, 2023, 2022, and 202

February 20, 2024 EX-10.17

Form of Long-Term Performance-Based Restricted Stock Unit Grant for 2023 under the 2022 Equity and Cash Incentive Plan.*†

Exhibit No. 10.17 Certain information has been excluded from this exhibit because it is not material and would likely cause competitive harm to the company if publicly disclosed. Redacted information is indicated by brackets. Consolidated Form of Long-Term Performance-Based Restricted Stock Unit Grant Company Confidential ARMSTRONG WORLD INDUSTRIES 2500 Columbia Ave., P.O. Box 3001 Lancaster, PA 1

February 20, 2024 EX-99.2

Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those re

4th Quarter & Full Year 2023 Earnings Presentation February 20, 2024 Exhibit 99.2 Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings

February 20, 2024 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): February 20, 2024 ARMSTRONG WORLD

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): February 20, 2024 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

February 20, 2024 EX-4.1

Description of Securities Registered under Section 12 of the Securities Exchange Act of 1934.†

Exhibit No. 4.1 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following is a summary description of the common shares, par value $0.01 per share (“common stock”) of Armstrong World Industries, Inc., a Pennsylvania corporation (the “Company”, “we”, “us” or “our”), which is the only class of securities of the Company registered under Section 12 of t

February 20, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-2116 ARMSTRONG WORLD IN

February 20, 2024 EX-99.1

Armstrong World Industries Reports Record-Setting Fourth-Quarter and Full-Year 2023 Results

Exhibit 99.1 Armstrong World Industries Reports Record-Setting Fourth-Quarter and Full-Year 2023 Results Fourth-Quarter 2023 Results† • Net sales up 3% with better-than-expected Mineral Fiber volumes • Operating income declined 6% primarily due to acquisition-related expenses, while adjusted operating income increased 5% • Diluted earnings per share from continuing operations down 1% primarily due

February 20, 2024 EX-10.18

Form of Long-Term Time- Based Restricted Stock Unit Grant for 2023 under the 2022 Equity and Cash Incentive Plan.*†

Exhibit No. 10.18 2023 Long-Term Time-Based Restricted Stock Unit Grant Participant Name (First, Middle & Last) I am pleased to inform you that the Company’s Management Development and Compensation Committee granted you the following: Date of Grant: [Grant Date] Time-Based Restricted Stock Units: [Number of Shares Granted ] This grant is subject to the terms of the Equity and Cash Incentive Plan (

February 20, 2024 EX-19

Trading in Company Securities By Employees, Officers and Directors.*†

Exhibit No. 19 TRADING IN COMPANY SECURITIES BY EMPLOYEES, OFFICERS AND DIRECTORS (Company Policy CP-70.D) This is a Company Policy of Armstrong World Industries, Inc. (AWI) It applies to you, in your capacity as an AWI employee, and to all employees, directors and officers of AWI and its subsidiaries worldwide. 1. PURPOSE AND OBJECTIVES We must observe laws that deal with trading in Armstrong sec

February 20, 2024 EX-97

Armstrong World Industries, Inc. Incentive Compensation Recoupment Policy.*†

Exhibit No. 97 ARMSTRONG WORLD INDUSTRIES, INC. INCENTIVE COMPENSATION RECOUPMENT POLICY 1. Introduction. The Board of Directors (the “Board”) of Armstrong World Industries, Inc. (the “Company”) believes that it is in the best interests of the Company and its shareholders to create and maintain a culture that emphasizes integrity and accountability and that reinforces the Company’s pay-for-perform

February 14, 2024 8-K

Financial Statements and Exhibits, Other Events

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): February 14, 2024 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

February 14, 2024 SC 13G/A

AWI / Armstrong World Industries, Inc. / LONDON CO OF VIRGINIA Passive Investment

SC 13G/A 1 fp0086939-1sc13ga.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO. 4)* Armstrong World Industries Inc. (Name of Issuer) Common Stock, Par Value of $0.01 Per Share 042384107 (CUSIP Number) Dec

February 14, 2024 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., Feb. 14, 2024 – Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, announced today that its Board of Directors has declared a cash dividend of $0.28 per share of common stock. The dividend will be paid on March 14, 2024, to stockholders of

February 9, 2024 SC 13G/A

AWI / Armstrong World Industries, Inc. / Capital International Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* Armstrong World Industries, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 04247X102 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appro

January 10, 2024 SC 13G/A

AWI / Armstrong World Industries, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0005-armstrongworldindustr.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Armstrong World Industries Inc Title of Class of Securities: Common Stock CUSIP Number: 04247X102 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate

November 7, 2023 EX-99.1

Correction - Armstrong World Industries to Attend the 2023 Baird Global Industrial Conference

Exhibit 99.1 Correction - Armstrong World Industries to Attend the 2023 Baird Global Industrial Conference LANCASTER, Pa., Nov. 6, 2023 – Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, announced today that President & CEO Vic Grizzle and SVP & CFO Chris Calzaretta will be hosting investor meetings at the Baird Global I

November 7, 2023 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2023 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdictio

November 6, 2023 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): November 6, 2023 ARMSTRONG WORLD

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): November 6, 2023 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

November 6, 2023 EX-99.1

Armstrong World Industries Announces Increase to Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Increase to Quarterly Dividend LANCASTER, Pa., Nov. 6, 2023 – Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, announced today that President & CEO Vic Grizzle and SVP & CFO Chris Calzaretta will be hosting investor meetings at the Baird Global Industrial Conference in Ch

November 6, 2023 EX-99.2

Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational res

Armstrong World Industries Investor Presentation November 2023 Exhibit 99.2 Safe Harbor Statement Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings from cost management initiatives, the performance o

October 24, 2023 EX-99.1

Armstrong World Industries Reports Third-Quarter 2023 Results

Exhibit 99.1 Armstrong World Industries Reports Third-Quarter 2023 Results Third-Quarter 2023 Results • Net sales up 7% versus the prior-year quarter on strong average unit value ("AUV") performance • Operating income up 37% with 630 basis points of margin expansion and diluted earnings per share from continuing operations up 32% versus the prior-year quarter • Adjusted EBITDA up 19% with 380 basi

October 24, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 24, 2023 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

October 24, 2023 EX-99.2

Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those re

3rd Quarter 2023 Earnings Presentation October 24, 2023 Exhibit 99.2 Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings from cost ma

October 24, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

October 18, 2023 8-K

Financial Statements and Exhibits, Other Events

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): October 18, 2023 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

October 18, 2023 EX-99.1

Armstrong World Industries Announces Increase to Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Increase to Quarterly Dividend LANCASTER, Pa., Oct. 18, 2023 – Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, announced today that its Board of Directors has approved a 10% increase in the company’s quarterly cash dividend to $0.28 per share of common stock. The dividen

July 25, 2023 EX-99.2

Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those re

2nd Quarter 2023 Earnings Presentation July 25, 2023 Exhibit 99.2 Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings from cost manag

July 25, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

July 25, 2023 EX-99.1

Armstrong World Industries Reports Second-Quarter 2023 Results

Exhibit 99.1 Armstrong World Industries Reports Second-Quarter 2023 Results Second-Quarter 2023 Results • Net sales up 1% versus the prior-year quarter on strong average unit value ("AUV") performance • Operating income up 22% with 440 basis points of margin expansion and diluted net earnings per share up 21% versus the prior-year quarter • Adjusted EBITDA up 10% with 260 basis points of margin ex

July 25, 2023 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 25, 2023 ARMSTRONG WORLD IND

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 25, 2023 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 o

July 24, 2023 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 24, 2023 ARMSTRONG WORLD IND

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 24, 2023 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 o

July 24, 2023 EX-99.1

Armstrong World Industries Acquires BŌK Modern and Expands its Architectural Metal Capabilities

Exhibit 99.1 Armstrong World Industries Acquires BŌK Modern and Expands its Architectural Metal Capabilities LANCASTER, Pa., July 24, 2023 – Armstrong World Industries, Inc. (NYSE: AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions in the Americas, today announced that it has acquired BŌK Modern, LLC (BŌK), a pioneer in the design and development of integrated a

July 19, 2023 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 19, 2023 ARMSTRONG WORLD IND

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 19, 2023 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 o

July 19, 2023 EX-99.1

Armstrong World Industries Announces Increase to Share Repurchase Program and Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Increase to Share Repurchase Program and Quarterly Dividend LANCASTER, Pa., July 19, 2023 (GLOBE NEWSWIRE) - Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, today announced that its Board of Directors has approved an additional $500 million authorization to repurchase sh

June 20, 2023 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): June 20, 2023 ARMSTRONG WORLD IND

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): June 20, 2023 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 o

May 30, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-02116 23-0366390 (State or other jurisdiction of incorporation or organization) (Commission file number) (I.R.S. Employer Identification No.) 2500 Columbia Avenue, Lancaster, Pennsylvania

May 30, 2023 EX-1.01

Armstrong World Industries, Inc. Conflict Minerals Report For the Year Ended December 31, 2022

EX-1.01 2 awi-ex101.htm EX-1.01 Exhibit 1.01 Armstrong World Industries, Inc. Conflict Minerals Report For the Year Ended December 31, 2022 Armstrong World Industries, Inc. (“AWI”) is a Pennsylvania corporation incorporated in 1891. We are a leader in the design, innovation and manufacture of ceiling and wall solutions in the Americas. Our products primarily include mineral fiber, fiberglass wool,

May 2, 2023 EX-10.1

Form of 2023 Long-Term Time-Based Restricted Stock Unit Grant—Tier 1 (CEO) under the Armstrong World Industries, Inc. Equity and Cash Incentive Plan is incorporated by reference from the Current Report on Form 8-K filed on May 2, 2023, wherein it appeared as Exhibit 10.1.*

EX-10.1 Exhibit 10.1 2023 RSU (Time-Based) Tier I (CEO) 2023 Long-Term Time-Based Restricted Stock Unit Grant First Name Middle Name Last Name I am pleased to inform you that the Company’s Management Development and Compensation Committee granted you the following: Date of Grant: [Grant Date] Time-Based Restricted Stock Units: [Number of Units Granted] This grant is subject to the terms of the Equ

May 2, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): April 28, 2023 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

May 1, 2023 DEF 14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

May 1, 2023 DEFA14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

April 25, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

April 25, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): April 25, 2023 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

April 25, 2023 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): April 19, 2023 ARMSTRONG WORLD IN

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): April 19, 2023 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

April 25, 2023 EX-99

Armstrong World Industries Reports First-Quarter 2023 Results

Exhibit 99.1 Armstrong World Industries Reports First-Quarter 2023 Results First-Quarter 2023 Results • Net sales up 10% versus the prior-year quarter • Operating income up 11% and diluted net earnings per share up 11% versus the prior-year quarter • Adjusted EBITDA up 9% and adjusted diluted net earnings per share up 10% versus the prior-year quarter • Cash flow from operating and investing activ

April 25, 2023 EX-3

Amended and Restated Bylaws of Armstrong World Industries, Inc. dated April 19, 2023

Exhibit 3.1 AMENDED AND RESTATED BYLAWS of ARMSTRONG WORLD INDUSTRIES, INC. (A Pennsylvania corporation) As in effect on October 2, 2006 and as amended August 5, 2010, July 25, 2014, December 5, 2017, April 17, 2020 and April 19, 2023 ARTICLE I Certain Definitions; Principal Office; Notices to the Corporation SECTION 1. Certain Definitions. Unless the context otherwise requires, the following term

April 25, 2023 EX-99

Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those re

1st Quarter 2023 Earnings Presentation April 25, 2023 Exhibit 99.2 Safe Harbor Statement Worthington Armstrong Joint Venture (“WAVE”). Disclosures in this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings from cost mana

April 19, 2023 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): April 19, 2023 ARMSTRONG WORLD IN

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): April 19, 2023 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

April 19, 2023 EX-99

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., April 19, 2023 (GLOBE NEWSWIRE) - Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, today announced that its Board of Directors has declared a cash dividend of $0.254 per share of common stock. The dividend will be paid on May 18, 2023, t

February 21, 2023 EX-21

Armstrong World Industries, Inc.’s Subsidiaries.†

Exhibit No. 21 Subsidiaries of Armstrong World Industries, Inc. December 31, 2022 The following is a list of subsidiaries of Armstrong World Industries, Inc., omitting certain subsidiaries, which, when not considered in the aggregate, but as a single subsidiary, would not constitute a significant subsidiary. U.S. Subsidiaries Jurisdiction of Incorporation Armstrong Cork Finance LLC Delaware Armstr

February 21, 2023 EX-10

Form of Long-Term Performance-Based Restricted Stock Unit Grant for 2022 under the 2022 Equity and Cash Incentive Plan, is incorporated by reference from the Annual Report on Form 10-K filed on February 21, 2023, wherein it appeared as Exhibit 10.17.*

Exhibit No. 10.17 Certain information has been excluded from this exhibit because it is not material and would likely cause competitve harm to the company if publicly disclosed. Redacted information is indicated by brackets. Consolidated Form of Long-Term Performance-Based Restricted Stock Unit Grant Company Confidential ARMSTRONG WORLD INDUSTRIES 2500 Columbia Ave., P.O. Box 3001 Lancaster, PA 17

February 21, 2023 EX-99

Armstrong World Industries Reports Fourth-Quarter and Full Year 2022 Results

Exhibit 99.1 Armstrong World Industries Reports Fourth-Quarter and Full Year 2022 Results Fourth-Quarter 2022 Results • Net sales up 8% versus the prior-year quarter with Mineral Fiber segment sales up 4% and Architectural Specialties segment sales up 18% • Operating income up 27% and diluted earnings per share from continuing operations up 22% versus the prior-year quarter • Adjusted EBITDA up 5%

February 21, 2023 EX-10

Offer Letter to Christopher Calzaretta dated June 9, 2022, is incorporated by reference from the Annual Report on Form 10-K filed on February 21, 2023, wherein it appeared as Exhibit 10.28.*

Exhibit No. 10.28 June 9, 2022 Personal & Confidential Dear Chris, On behalf of Armstrong World Industries, Inc. (“AWI”), I am pleased to confirm our offer of employment to you for the position of Chief Financial Officer (CFO). This position is based in Lancaster, PA, reporting to me. Your anticipated effective date in the role is August 1, 2022. Compensation Terms You will earn a semi-monthly gro

February 21, 2023 EX-4

Description of Securities Registered under Section 12 of the Securities Exchange Act of 1934.†

Exhibit No. 4.1 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following is a summary description of the common shares, par value $0.01 per share (“common stock”) of Armstrong World Industries, Inc., a Pennsylvania corporation (the “Company”, “we”, “us” or “our”), which is the only class of securities of the Company registered under Section 12 of t

February 21, 2023 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): February 21, 2023 ARMSTRONG WORLD

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): February 21, 2023 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

February 21, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-2116 ARMSTRONG WORLD IN

February 21, 2023 EX-99

Safe Harbor Statement Disclosures in this release contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results,

4th Quarter & Full Year 2022 Earnings Presentation February 21, 2023 Exhibit 99.2 Safe Harbor Statement Disclosures in this release contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, those relating to future financial and operational results, expected savings from cost management initiatives, the performance

February 21, 2023 EX-10

Form of Long-Term Time-Based Restricted Stock Unit Grant for 2022 under the 2022 Equity and Cash Incentive Plan, is incorporated by reference from the Annual Report on Form 10-K filed on February 21, 2023, wherein it appeared as Exhibit 10.18.*

Exhibit No. 10.18 2022 Long-Term Time-Based Restricted Stock Unit Grant ARMSTRONG WORLD INDUSTRIES 2500 Columbia Ave., P.O. Box 3001 Lancaster, PA 17604 717. 397.0611 First Name Middle Name Last Name I am pleased to inform you that the Company’s Management Development and Compensation Committee granted you the following: Date of Grant: [Grant Date] Time-Based Restricted Stock Units: [Number of Uni

February 21, 2023 EX-99

Worthington Armstrong Venture consolidated financial statements as of December 31, 2022 and 2021 and for the years ended December 31, 2022, 2021 and 2020.†

Exhibit No. 99.1 WORTHINGTON ARMSTRONG VENTURE Consolidated Financial Statements December 31, 2022 and 2021 (With Independent Auditors’ Report Thereon) WORTHINGTON ARMSTRONG VENTURE Table of Contents Page Independent Auditors’ Report 1-2 Consolidated Balance Sheets, December 31, 2022 and 2021 3 Consolidated Statements of Income and Comprehensive Income, Years ended December 31, 2022, 2021, and 202

February 14, 2023 8-K

Financial Statements and Exhibits, Other Events

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): February 14, 2023 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

February 14, 2023 EX-99

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., Feb. 14, 2023 (GLOBE NEWSWIRE) - Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, today announced that its Board of Directors has declared a cash dividend of $0.254 per share of common stock. The dividend will be paid on Mar. 16, 2023, t

February 14, 2023 SC 13G/A

AWI / Armstrong World Industries Inc / LONDON CO OF VIRGINIA Passive Investment

SC 13G/A 1 fp0082026-1sc13ga.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO. 3)* Armstrong World Industries Inc. (Name of Issuer) Common Stock, Par Value of $0.01 Per Share 042384107 (CUSIP Number) Dec

February 13, 2023 SC 13G/A

AWI / Armstrong World Industries Inc / Capital International Investors - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4 )* Armstrong World Industries, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 04247X102 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

February 9, 2023 SC 13G/A

AWI / Armstrong World Industries Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0310-armstrongworldindustr.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: Armstrong World Industries Inc. Title of Class of Securities: Common Stock CUSIP Number: 04247X102 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriat

December 12, 2022 EX-10.1

Second Amended and Restated Credit Agreement, dated as of December 7, 2022, by and among Armstrong World Industries, Inc., as Borrower, certain subsidiaries of Armstrong World Industries, Inc. identified therein, as the Guarantors, Bank of America, N.A., as the administrative agent, the collateral agent, a letter of credit issuer and the swing line lender, Citizens Bank, N.A., Manufacturers & Traders Trust Company, PNC Bank, National Association, TD Bank, N.A. and Truist Bank, as co-syndication agents, JPMorgan Chase Bank, N.A., The Bank of Nova Scotia, and First National Bank of Pennsylvania, as co-documentation agents, BofA Securities, Inc., Citizens Bank, N.A., Manufacturers & Traders Trust Company, PNC Capital Markets, LLC, TD Bank, N.A., and Truist Securities, Inc., as joint lead arrangers and joint bookrunners and the other lenders and letter of credit issuers party thereto is incorporated by reference from the Current Report on Form 8-K filed on December 12, 2022, wherein it appeared as Exhibit 10.1.

Exhibit 10.1 CUSIP Number: 04247QAS6 Revolver CUSIP Number: 04247QAT4 Term A Loan CUSIP Number: 04247QAU1 SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of December 7, 2022 among ARMSTRONG WORLD INDUSTRIES, INC., as the Borrower, CERTAIN SUBSIDIARIES OF ARMSTRONG WORLD INDUSTRIES, INC. IDENTIFIED HEREIN, as the Guarantors, BANK OF AMERICA, N.A., as the Administrative Agent, the Collateral A

December 12, 2022 8-K

Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

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): December 7, 2022 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

November 9, 2022 CORRESP

2

Christopher P. Calzaretta Senior Vice President and Chief Financial Officer Phone: (717) 396-3206 E-Mail: [email protected] November 9, 2022 Via EDGAR Division of Corporation Finance Office of Manufacturing U.S. Securities and Exchange Commission 100 F Street N.E. Washington, D.C. 20549-4631 Re: Armstrong World Industries, Inc. Form 10-K for Fiscal Year Ended December 31, 2021 Fil

October 25, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 25, 2022 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

October 25, 2022 EX-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 comme

3rd Quarter 2022 Earnings Presentation October 25, 2022 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 Securit

October 25, 2022 EX-99.1

Armstrong World Industries Reports Third-Quarter 2022 Results

Exhibit 99.1 Armstrong World Industries Reports Third-Quarter 2022 Results ? Net sales up 11% versus the prior-year quarter ? Operating income up 2% and diluted earnings per share from continuing operations up 11% versus the prior-year quarter ? Adjusted EBITDA up 5% and adjusted diluted earnings per share up 16% versus the prior-year quarter ? Revising 2022 Guidance: Net Sales of +10% to 12%, adj

October 25, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

October 19, 2022 8-K

Financial Statements and Exhibits, Other Events

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): October 19, 2022 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

October 19, 2022 EX-99.1

Armstrong World Industries Announces Increase in Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Increase in Quarterly Dividend LANCASTER, Pa., Oct. 19, 2022 (GLOBE NEWSWIRE) - Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, today announced that its Board of Directors has approved a 10% increase in the company's quarterly cash dividend to $0.254 per share of common

September 30, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): September 28, 2022 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

September 21, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): September 19, 2022 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

July 26, 2022 EX-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 commen

2nd Quarter 2022 Earnings Presentation July 26, 2022 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 L

July 26, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

July 26, 2022 EX-99.1

Armstrong World Industries Reports Second-Quarter 2022 Results

Exhibit 99.1 Armstrong World Industries Reports Second-Quarter 2022 Results Key Second-Quarter Highlights ? Net sales up 15% versus the prior-year quarter ? Operating income down 9% and diluted earnings per share from continuing operations down 3% versus the prior-year quarter including higher charges for 2020 acquisition-related fair value adjustments ? Adjusted EBITDA up 2% and adjusted diluted

July 26, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 26, 2022 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 o

July 21, 2022 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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 19, 2022 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 o

July 21, 2022 EX-99.1

Armstrong World Industries Appoints Boeing Senior Executive to Board of Directors

Exhibit 99.1 Armstrong World Industries Appoints Boeing Senior Executive to Board of Directors LANCASTER, Pa., July 21, 2022 ? Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, today announced the appointment of William H. Osborne to its Board of Directors. With his addition, the board of directors expands to nine members

July 20, 2022 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., July 20, 2022 (GLOBE NEWSWIRE) - Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, today announced that its Board of Directors has declared a cash dividend of $0.231 per share of common stock. The dividend will be paid on Aug. 18, 2022, t

July 20, 2022 8-K

Financial Statements and Exhibits, Other Events

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 20, 2022 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 o

June 29, 2022 EX-99.1

Armstrong World Industries, Inc. Equity and Cash Incentive Plan.

Exhibit 99.1 ARMSTRONG WORLD INDUSTRIES, INC. EQUITY AND CASH INCENTIVE PLAN Effective as of June 16, 2022 1. Purpose. The Armstrong World Industries, Inc. Equity and Cash Incentive Plan (the ?Plan?) is intended to provide incentives which will attract, retain and motivate highly competent persons as officers, key employees, consultants and advisors of Armstrong World Industries, Inc., a Pennsylva

June 29, 2022 S-8

As filed with the Securities and Exchange Commission on June 29, 2022

As filed with the Securities and Exchange Commission on June 29, 2022 Registration No.

June 29, 2022 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Armstrong World Industries, Inc.

June 22, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events, Submission of Matters to a Vote of Security Holders

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): June 16, 2022 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 o

June 14, 2022 EX-99.1

Armstrong World Industries Names Christopher Calzaretta as Next Chief Financial Officer

Exhibit 99.1 Armstrong World Industries Names Christopher Calzaretta as Next Chief Financial Officer LANCASTER, Pa., June 14, 2022 ? Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, today announced the appointment of Christopher P. Calzaretta to succeed Brian MacNeal as its next chief financial officer (CFO) effective Au

June 14, 2022 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): June 9, 2022 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 or

May 26, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-02116 23-0366390 (State or other jurisdiction of incorporation or organization) (Commission file number) (I.R.S. Employer Identification No.) 2500 Columbia Avenue, Lancaster, Pennsylvania

May 26, 2022 EX-1.01

EX-1.01

EX-1.01 2 awi-ex101.htm EX-1.01 Exhibit 1.01 Armstrong World Industries, Inc. Conflict Minerals Report For the Year Ended December 31, 2021 Armstrong World Industries, Inc. (“AWI”) is a Pennsylvania corporation incorporated in 1891. We are a leader in the design, innovation and manufacture of ceiling and wall solutions in the Americas. Our products primarily include mineral fiber, fiberglass wool,

April 27, 2022 DEF 14A

Annex B

Table of Contents SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

April 27, 2022 DEFA14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

April 26, 2022 EX-99.1

Armstrong World Industries Reports First-Quarter 2022 Results

Exhibit 99.1 Armstrong World Industries Reports First-Quarter 2022 Results Key First-Quarter Highlights ? Net sales up 12% versus the prior-year quarter ? Operating income up 17% and diluted earnings per share from continuing operations up 21% versus the prior-year quarter ? Adjusted EBITDA up 3% and adjusted diluted earnings per share up 7% versus the prior-year quarter ? Maintaining 2022 Guidanc

April 26, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

April 26, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): April 26, 2022 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

April 26, 2022 EX-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 commen

1st Quarter 2022 Earnings Presentation April 26, 2022 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

April 20, 2022 8-K

Financial Statements and Exhibits, Other Events

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): April 20, 2022 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

April 20, 2022 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., April 20, 2022 (GLOBE NEWSWIRE) - Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, innovation and manufacture of ceiling and wall solutions, today announced that its Board of Directors has declared a cash dividend of $0.231 per share of common stock for the first quarter of 2022. The dividend w

April 11, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): April 7, 2022 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 o

April 4, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): March 31, 2022 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

February 22, 2022 EX-4.1

Description of Securities Registered under Section 12 of the Securities Exchange Act of 1934.†

Exhibit No. 4.1 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following is a summary description of the common shares, par value $0.01 per share (?common stock?) of Armstrong World Industries, Inc., a Pennsylvania corporation (the ?Company?, ?we?, ?us? or ?our?), which is the only class of securities of the Company registered under Section 12 of t

February 22, 2022 EX-10.18

Form of Long-Term Time-Based Restricted Stock Unit Grant for 2022 under the 2016 Long-Term Incentive Plan is incorporated by reference from the Annual Report on Form 10-K, filed on February 22, 2022, wherein it appeared as Exhibit 10.18.*

Exhibit No. 10.18 2022 Long-Term Time-Based Restricted Stock Unit Grant ARMSTRONG WORLD INDUSTRIES 2500 Columbia Ave., P.O. Box 3001 Lancaster, PA 17604 717. 397.0611 First Name Middle Name Last Name I am pleased to inform you that the Company?s Management Development and Compensation Committee granted you the following: Date of Grant: [Grant Date] Time-Based Restricted Stock Units: [Number of Uni

February 22, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-2116 ARMSTRONG WORLD IN

February 22, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 22, 2022 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

February 22, 2022 EX-10.29

Offer Letter to Austin So dated January 6, 2022 is incorporated by reference from the Annual Report on Form 10-K, filed on February 22, 2022, wherein it appeared as Exhibit 10.29.*

Exhibit No. 10.29 January 6, 2022 Personal & Confidential Dear Austin, On behalf of Armstrong World Industries, Inc. (?AWI?), I am pleased to confirm our offer of employment to you for the position of SVP General Counsel & Chief Compliance Officer. This position is based in Lancaster, PA, reporting to me. Your anticipated start date is to be determined. Compensation Terms You will earn a semi-mont

February 22, 2022 EX-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 commen

4th Quarter 2021 Earnings Presentation February 22, 2022 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 Securiti

February 22, 2022 EX-99.1

Armstrong World Industries Reports Fourth-Quarter and Full Year 2021 Results

Exhibit 99.1 Armstrong World Industries Reports Fourth-Quarter and Full Year 2021 Results Key Fourth-Quarter Highlights ? Net sales up 18% versus the prior-year quarter ? Operating income up 26% and diluted earnings per share up 22% versus the prior-year quarter ? Adjusted EBITDA up 21% versus the prior-year quarter ? Issuing 2022 Guidance: Net Sales of +10% to 13%, adjusted EBITDA of +10% to 16%

February 22, 2022 EX-99.1

Worthington Armstrong Venture consolidated financial statements as of December 31, 2021 and 2020 and for the years ended December 31, 2021, 2020 and 2019.†

Exhibit No. 99.1 WORTHINGTON ARMSTRONG VENTURE Consolidated Financial Statements December 31, 2021 and 2020 (With Independent Auditors? Report Thereon) WORTHINGTON ARMSTRONG VENTURE Table of Contents Page Independent Auditors? Report 1-2 Consolidated Balance Sheets, December 31, 2021 and 2020 3 Consolidated Statements of Income and Comprehensive Income, Years ended December 31, 2021, 2020, and 201

February 22, 2022 EX-21

Armstrong World Industries, Inc.’s Subsidiaries.†

Exhibit No. 21 Subsidiaries of Armstrong World Industries, Inc. December 31, 2021 The following is a list of subsidiaries of Armstrong World Industries, Inc., omitting certain subsidiaries, which, when not considered in the aggregate, but as a single subsidiary, would not constitute a significant subsidiary. U.S. Subsidiaries Jurisdiction of Incorporation Armstrong Cork Finance LLC Delaware Armstr

February 22, 2022 EX-10.28

Offer Letter to Mark A. Hershey dated November 14, 2021 is incorporated by reference from the Annual Report on Form 10-K, filed on February 22, 2022, wherein it appeared as Exhibit 10.28.*

Exhibit No. 10.28 November 14, 2021 Personal & Confidential Dear Mark, Congratulations. I am pleased to confirm the compensation details of your assignment to Senior Vice President Americas of Armstrong World Industries (AWI) effective January 1, 2022. Compensation Terms: Effective January 1, 2022, you will earn a semi-monthly gross base salary of $20,416, or $490,000 annualized (increased from cu

February 16, 2022 8-K

Financial Statements and Exhibits, Other Events

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): February 16, 2022 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

February 16, 2022 EX-99.1

Armstrong World Industries Announces Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Quarterly Dividend LANCASTER, Pa., Feb. 16, 2022 (GLOBE NEWSWIRE) - 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 announced that its Board of Directors has declared a cash dividend of $0.231 per share of common stock

February 14, 2022 SC 13G/A

AWI / Armstrong World Industries Inc / LONDON CO OF VIRGINIA Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO. 2)* Armstrong World Industries Inc. (Name of Issuer) Common Stock, Par Value of $0.01 Per Share 042384107 (CUSIP Number) December 31, 2021 (Date of Event Whi

February 11, 2022 SC 13G/A

AWI / Armstrong World Industries Inc / Capital International Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3 )* Armstrong World Industries, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 04247X102 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appro

February 10, 2022 SC 13G/A

AWI / Armstrong World Industries Inc / LAZARD ASSET MANAGEMENT LLC Passive Investment

r13ggreenplainsrenewable SCHEDULE 13G/A CUSIP No: 04247X102 1)NAME OF REPORTING PERSON S.

February 9, 2022 SC 13G/A

AWI / Armstrong World Industries Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: Armstrong World Industries Inc. Title of Class of Securities: Common Stock CUSIP Number: 04247X102 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule

January 18, 2022 EX-99.1

Armstrong World Industries Names Austin So as SVP, General Counsel

Exhibit 99.1 Armstrong World Industries Names Austin So as SVP, General Counsel LANCASTER, Pa., Jan. 18, 2022 ? Armstrong World Industries, Inc (NYSE:AWI), a leader in the design, innovation and manufacture of commercial and residential ceiling, wall and suspension system solutions, announced today that Austin So will join AWI as senior vice president, general counsel and secretary effective Feb.

January 18, 2022 8-K

Financial Statements and Exhibits, Other Events

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): January 18, 2022 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation o

November 16, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): November 12, 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

November 16, 2021 EX-99.1

LANCASTER, Pa., Nov. 16, 2021 – Armstrong World Industries, Inc (NYSE:AWI) announced today that Charlie M. Chiappone, senior vice president, Ceilings and Wall Solutions, will retire effective April 1, 2022. In conjunction with Mr. Chiappone’s retirem

Exhibit 99.1 Armstrong World Industries Announces Key Leadership Changes LANCASTER, Pa., Nov. 16, 2021 ? Armstrong World Industries, Inc (NYSE:AWI) announced today that Charlie M. Chiappone, senior vice president, Ceilings and Wall Solutions, will retire effective April 1, 2022. In conjunction with Mr. Chiappone?s retirement, the company announced the following changes to the company?s leadership

October 26, 2021 EX-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 commen

Earnings Call Presentation 3rd Quarter 2021 October 26, 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 Secu

October 26, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

October 26, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 26, 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 o

October 26, 2021 EX-99.1

Armstrong World Industries Reports Third-Quarter 2021 Results

Exhibit 99.1 Armstrong World Industries Reports Third-Quarter 2021 Results Key Highlights ? Net sales up 19% versus the prior-year quarter ? Operating income flat versus the prior-year quarter ? Adjusted EBITDA up 8% versus the prior-year quarter ? Reaffirming the midpoints of 2021 guidance LANCASTER, Pa., October 26, 2021 - Armstrong World Industries, Inc. (NYSE:AWI), a leader in the design, inno

October 20, 2021 EX-99.1

Armstrong World Industries Announces Increase in Quarterly Dividend

Exhibit 99.1 Armstrong World Industries Announces Increase in Quarterly Dividend LANCASTER, Pa., October 20, 2021 (GLOBE NEWSWIRE) - 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 announced that its Board of Directors has approved a 10% increase in the company?s quart

October 20, 2021 8-K

Financial Statements and Exhibits, Other Events

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): October 20, 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 o

September 1, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): August 31, 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

September 1, 2021 EX-99.1

LANCASTER, Pa., Sept. 1, 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, announced today the planned retirement of Bri

Exhibit 99.1 Armstrong World Industries Announces CFO Retirement and Transition Plan LANCASTER, Pa., Sept. 1, 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, announced today the planned retirement of Brian MacNeal, chief financial officer, effective May 1, 2022. MacNe

August 3, 2021 EX-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 commen

Armstrong World Industries Investor Presentation August 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 Secu

August 3, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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): August 3, 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

August 3, 2021 EX-99.1

Armstrong World Industries to Attend Jefferies Industrials Conference

Exhibit 99.1 Armstrong World Industries to Attend Jefferies Industrials Conference LANCASTER, Pa., Aug. 3, 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, will be hosting investor meetings with senior management at the Jefferies Industrial Conference tomorrow, Aug. 4.

July 27, 2021 EX-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 commen

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 Securit

July 27, 2021 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 o

July 27, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

July 27, 2021 EX-10.1

Form of Indemnification Agreement for Officers and Directors of Armstrong World Industries, Inc. is incorporated by reference from the Report on Form 8-K filed on July 27, 2021, wherein it appeared as Exhibit 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 officer

July 27, 2021 EX-99.1

Armstrong World Industries Reports Second Quarter 2021 Results

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 d

July 21, 2021 8-K

Financial Statements and Exhibits, Other Events

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 21, 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 o

July 21, 2021 EX-99.1

Armstrong World Industries Declares Cash Dividend for Second Quarter 2021

Exhibit 99.1 Armstrong World Industries Declares Cash Dividend for Second Quarter 2021 LANCASTER, Pa., July 21, 2021 (GLOBE NEWSWIRE) - 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 announced that its Board of Directors has declared a cash dividend of $0.21 per share

June 25, 2021 8-K

Submission of Matters to a Vote of Security Holders

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): June 24, 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 o

May 26, 2021 EX-1.01

Conflict Minerals Report of Armstrong World Industries, Inc.

Exhibit 1.01 Armstrong World Industries, Inc. Conflict Minerals Report For the Year Ended December 31, 2020 Armstrong World Industries, Inc. (?AWI?) is a Pennsylvania corporation incorporated in 1891. We are a leading producer of ceiling systems for use in the construction and renovation of commercial and residential buildings. We design, manufacture and sell ceiling and wall systems (primarily mi

May 26, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-02116 23-0366390 (State or other jurisdiction of incorporation or organization) (Commission file number) (I.R.S. Employer Identification No.) 2500 Columbia Avenue, Lancaster, Pennsylvania

April 30, 2021 S-3ASR

- S-3ASR

Table of Contents As filed with the Securities and Exchange Commission on April 30, 2021 Registration No.

April 28, 2021 DEFA14A

- DEFA14A

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

April 28, 2021 DEF 14A

Definitive Proxy Statement

Table of Contents SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

April 27, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-2116 ARMSTRONG WORLD INDUSTRIES, INC.

April 27, 2021 EX-99.2

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-loo

Earnings Call Presentation 1st Quarter 2021 April 27, 2021 Exhibit 99.2 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

April 27, 2021 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): April 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

April 27, 2021 EX-99.1

Armstrong World Industries Reports First Quarter 2021 Results Key Highlights

Exhibit 99.1 Armstrong World Industries Reports First Quarter 2021 Results Key Highlights ? Net sales up 1% versus the prior year quarter ? Operating income down 29% versus the prior year quarter ? Adjusted EBITDA down 12% versus the prior year quarter ? Maintaining 2021 guidance: Net Sales of +10% to +13% and adjusted EBITDA of +9% to +13% LANCASTER, Pa., April 27, 2021 - Armstrong World Industri

April 20, 2021 8-K

Financial Statements and Exhibits, Other Events

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): April 20, 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

April 20, 2021 EX-99.1

Armstrong World Industries Declares Cash Dividend for First Quarter 2021

Exhibit 99.1 Armstrong World Industries Declares Cash Dividend for First Quarter 2021 LANCASTER, Pa., Apr. 20, 2021 (GLOBE NEWSWIRE) - 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 announced that its Board of Directors has declared a cash dividend of $0.21 per share

March 12, 2021 EX-99.1

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-loo

Armstrong World Industries Investor Presentation February 23, 2021 Exhibit 99.1 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 Litigatio

March 12, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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): March 12, 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

March 8, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): March 8, 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 o

February 23, 2021 EX-99.1

Armstrong World Industries Reports Fourth Quarter and Full Year 2020 Results Key Highlights

Exhibit 99.1 Armstrong World Industries Reports Fourth Quarter and Full Year 2020 Results Key Highlights ? Net sales down 3% versus the prior year quarter ? Operating income down 29% versus the prior year quarter ? Adjusted EBITDA down 19% versus the prior year quarter ? Acquired Arktura, LLC during the quarter ? 2021 Guidance versus prior year: Net Sales of +10%-13% and EBITDA of +9%-13% LANCASTE

February 23, 2021 10-K

Annual Report - 10-K

d UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-2116 ARMSTRONG WORLD

February 23, 2021 EX-21

Armstrong World Industries, Inc.’s Subsidiaries.†

Exhibit No. 21 Subsidiaries of Armstrong World Industries, Inc. December 31, 2020 The following is a list of subsidiaries of Armstrong World Industries, Inc., omitting certain subsidiaries, which, when not considered in the aggregate, but as a single subsidiary, would not constitute a significant subsidiary. U.S. Subsidiaries Jurisdiction of Incorporation Armstrong Cork Finance LLC Delaware Armstr

February 23, 2021 EX-99.2

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-loo

Earnings Call Presentation 4th Quarter 2020 February 23, 2021 Exhibit 99.2 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 Ref

February 23, 2021 EX-4.1

Description of Securities Registered under Section 12 of the Securities Exchange Act of 1934.†

Exhibit No. 4.1 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following is a summary description of the common shares, par value $0.01 per share (?common stock?) of Armstrong World Industries, Inc., a Pennsylvania corporation (the ?Company?, ?we?, ?us? or ?our?), which is the only class of securities of the Company registered under Section 12 of t

February 23, 2021 EX-10.25

Form of Long-Term Performance-Based Restricted Stock Unit Grant for 2019 and later years under the 2016 Long-Term Incentive Plan is incorporated by reference from the Annual Report on Form 10-K, filed on February 23, 2021, wherein it appeared as Exhibit 10.25.*‡

Exhibit 10.25 Certain information has been excluded from this exhibit because it is not material and would likely cause competitive harm to the company if publicly disclosed. Redacted information is indicated by brackets. Consolidated Form of Long-Term Performance-Based Restricted Stock Unit Grant1 Company Confidential ARMSTRONG WORLD INDUSTRIES 2500 Columbia Ave., P.O. Box 3001 Lancaster, PA 1760

February 23, 2021 EX-99.1

Worthington Armstrong Venture consolidated financial statements as of December 31, 2020 and 2019 and for the years ended December 31, 2020, 2019 and 2018.†

Exhibit No. 99.1 WORTHINGTON ARMSTRONG VENTURE Consolidated Financial Statements December 31, 2020 and 2019 (With Independent Auditors? Report Thereon) WORTHINGTON ARMSTRONG VENTURE Table of Contents Page Independent Auditors? Report 1 Consolidated Balance Sheets, December 31, 2020 and 2019 2 Consolidated Statements of Income and Comprehensive Income, Years ended December 31, 2020, 2019, and 2018

February 23, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 23, 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

February 17, 2021 8-K

Financial Statements and Exhibits, Other Events

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): February 17, 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

February 17, 2021 EX-99.1

Armstrong World Industries Declares Cash Dividend for Fourth Quarter 2020

Exhibit 99.1 Armstrong World Industries Declares Cash Dividend for Fourth Quarter 2020 LANCASTER, Pa., February 17, 2021 (GLOBE NEWSWIRE) - 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 announced that its Board of Directors has declared a cash dividend of $0.21 per s

February 16, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO. 1)* Arm

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO. 1)* Armstrong World Industries Inc. (Name of Issuer) Common Stock, Par Value of $0.01 Per Share 04247X102 (CUSIP Number) December 31, 2020 (Date of Event Whi

February 16, 2021 SC 13G/A

SCHEDULE 13G

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Armstrong World Industries, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 04247X102 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appro

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6)* Name of issuer: Armstrong World Industries Inc. Title of Class of Securities: Common Stock CUSIP Number: 04247X102 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule

February 10, 2021 SC 13G/A

SCHEDULE 13G/A

r13ggreenplainsrenewable SCHEDULE 13G/A CUSIP No: 04247X102 1)NAME OF REPORTING PERSON S.

December 16, 2020 EX-99.1

Armstrong World Industries, Inc. Acquires Arktura

EX 99.1 Armstrong World Industries, Inc. Acquires Arktura LANCASTER, Pa., Dec. 16, 2020 – Armstrong World Industries, Inc. (NYSE:AWI) today announced that it has completed its acquisition of Arktura, LLC, an award-winning designer and fabricator of ceilings, walls, partitions and facades based in Los Angeles, California. Founded and led by architects and designers, Arktura is a leader in architect

December 16, 2020 8-K

Financial Statements and Exhibits, Other Events - 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): December 16, 2020 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

December 15, 2020 EX-4.4

Armstrong World Industries, Inc. 2020 Inducement Award Plan.

EX-4.4 Exhibit 4.4 ARMSTRONG WORLD INDUSTRIES, INC. 2020 INDUCEMENT AWARD PLAN Effective as of December 15, 2020 ARMSTRONG WORLD INDUSTRIES, INC. 2020 INDUCEMENT AWARD PLAN Index of Defined Terms Section Where Defined or First Used Term Administrator 2(a) Affiliate 14(c)(ii) Beneficial Owner or Beneficially Owned 14(c)(iii) Benefits 4(a) Board of Directors 2(a) Cause 14(c)(v) Change in Control 14(

December 15, 2020 S-8

- FORM S-8

Form S-8 As filed with the Securities and Exchange Commission on December 15, 2020 Registration No.

November 20, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

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): November 20, 2020 ARMSTRONG WORLD INDUSTRIES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-2116 23-0366390 (State or other jurisdiction of incorporation

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