AWI

• On July 30, 2026, Armstrong World Industries announced the appointment of Jennifer O. Kozak as Senior Vice President, Chief Human Resources Officer, effective September 9, 2026.
• She joins from Enviri (NYSE: NVRI), where she was Senior Vice President and Chief Human Resources Officer.
• Kozak brings more than 25 years of global human resources experience across public and private industrial organizations.
• The appointment was disclosed under Item 8.01 Other Events, with the press release furnished as Exhibit 99.1.

8.01 Other Events · 9.01 Financial Statements and Exhibits

• Operating income increased 8.6% to $133.8 million, and adjusted EBITDA rose 7.5% to $166 million.
• Diluted EPS increased 12.4% to $2.26, and adjusted diluted EPS rose 12.9% to $2.36.
• The company raised its full-year 2026 guidance midpoints for net sales, adjusted EBITDA, adjusted diluted EPS, and adjusted free cash flow.
• The Board authorized an additional $800 million for share repurchases, extending the program through December 2029.

2.02 Results of Operations and Financial Condition · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• The share repurchase program has been extended through December 31, 2029.
• The Board declared a quarterly cash dividend of $0.339 per share, payable on August 19, 2026, to stockholders of record on August 5, 2026.
• Repurchases may be made through open market, block, and privately-negotiated transactions, including Rule 10b5-1 plans.
• The program does not obligate the company to purchase any specific amount and may be suspended or discontinued at any time.

8.01 Other Events · 9.01 Financial Statements and Exhibits

• Shareholders ratified KPMG LLP as independent auditor for fiscal 2026, with 37,098,530 votes for, 1,559,588 against, and 118,774 abstentions.
• The 2026 Directors Stock Unit Plan was approved, with 36,119,326 votes for, 482,889 against, and 120,929 abstentions.
• Advisory approval of executive compensation passed, with 35,408,662 votes for, 1,189,247 against, and 125,235 abstentions.
• Following the meeting, the Board appointed committee members and chairs, including Barbara L. Loughran as Audit Chair and Roy W. Templin as Finance Chair.

5.07 Submission of Matters to a Vote of Security Holders · 8.01 Other Events

• President & CEO Mark Hershey and SVP & CFO Chris Calzaretta will host the investor meetings.
• The company posted an updated Investor Presentation on its website, accessible via the Investors section.
• The press release and investor presentation are furnished as Exhibits 99.1 and 99.2 to the Form 8-K.
• The disclosure was made under Item 7.01 Regulation FD and is not deemed filed for SEC purposes.

7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Operating income decreased 4.4% to $94.2 million, while adjusted EBITDA increased 0.8% to $130 million.
• Diluted EPS decreased 1.9% to $1.55, and adjusted diluted EPS increased 1.8% to $1.69.
• Architectural Specialties net sales grew 11.0% to $152.7 million, while Mineral Fiber net sales grew 4.9% to $257.2 million.
• Company reaffirmed 2026 guidance for net sales, adjusted EBITDA, and adjusted free cash flow, and raised adjusted diluted EPS guidance to 10%-14% growth.
• Repurchased 0.3 million shares for $60 million in Q1 2026 at an average price of $176.00 per share.

2.02 Results of Operations and Financial Condition · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• On April 24, 2026, Armstrong World Industries, Inc. announced a quarterly cash dividend of $0.339 per share of common stock.
• The dividend is payable on May 26, 2026, to stockholders of record as of the close of business on May 11, 2026.
• Future dividends and capital allocations remain at the discretion of the Board, subject to the company's financial position, results, and cash flow.
• The company reported $1.6 billion in revenue in 2025 and has approximately 4,000 employees.

8.01 Other Events · 9.01 Financial Statements and Exhibits

• On March 2, 2026, Armstrong World Industries, Inc. furnished an updated Investor Presentation under Item 7.01 Regulation FD Disclosure.
• The filing includes full-year 2025 results: net sales of $1,621 million, adjusted EBITDA of $555 million, adjusted diluted EPS of $7.41, and adjusted free cash flow of $346 million.
• The presentation highlights recent acquisitions: Geometrik (Sept 2025), Parallel (Dec 2025), and Eventscape (Feb 2026), which are excluded from organic results.
• The information is furnished, not filed, and is not incorporated by reference into other SEC filings.

7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits