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8-K

0000007431false00000074312026-02-242026-02-24

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 24, 2026

ARMSTRONG WORLD INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

Pennsylvania

1-2116

23-0366390

(State or other jurisdiction of incorporation or organization)

(Commission File Number)

(IRS Employer Identification No.)

2500 Columbia Avenue P.O. Box 3001 Lancaster, Pennsylvania

17603

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (717) 397-0611 NA (Former name or former address if changed since last report.)

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

☐

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock, $0.01 par value per share

AWI

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻

Section 2 - Financial Information Item 2.02 Results of Operations and Financial Condition. On February 24, 2026, Armstrong World Industries, Inc. (the "Company") issued a press release announcing its fourth quarter and full year 2025 consolidated financial results. The full text of the press release is attached hereto as Exhibit 99.1. The information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1, is being furnished herewith and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (the “Act”), or the Exchange Act, except as expressly set forth by specific reference in such filing. Section 7 – Regulation FD Item 7.01 Regulation FD Disclosure. On February 24, 2026, the Company issued a press release announcing that it will report its fourth quarter and full year 2025 consolidated financial results via a webcast and conference call on February 24, 2026 at 10:00 a.m. Eastern Time which can be accessed through the “Investors” section of the Company’s website, www.armstrong.com. During this report, the Company will reference a slide presentation, a copy of which is attached hereto as Exhibit 99.2 and incorporated herein by reference. The information in Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.2, is being furnished herewith and shall not be deemed “filed” for the purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing under the Act, or the Exchange Act, except as expressly set forth by specific reference in such filing. Section 9 – Financial Statements and Exhibits Item 9.01 Financial Statements and Exhibits. (d) Exhibits

No. 99.1

Press Release of Armstrong World Industries, Inc. dated February 24, 2026

No. 99.2

Earnings Call Presentation Fourth Quarter and Full Year 2025 dated February 24, 2026

No. 104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

2

SIGNATURES

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

ARMSTRONG WORLD INDUSTRIES, INC.

By:

/s/ Austin K. So

Austin K. So

SVP General Counsel, Head of Government Relations & Chief Sustainability Officer, Secretary

Date: February 24, 2026

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