ARMSTRONG WORLD INDUSTRIES INC — Director's Dealing 2025

Apr 10, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ARMSTRONG WORLD INDUSTRIES INC (AWI)
CIK: 0000007431
Period of Report: 2025-04-08

Reporting Person: Burge James T. (Vice President & Controller)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-04-08	Common Stock	M	990	—	Acquired	1918	Direct
2025-04-08	Common Stock	F	283	$126.10	Disposed	1635	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-04-08	Performance Based Restricted Stock Units	$	M	990	Disposed		Common Stock (990)	Direct

Footnotes

F1: Reflects the conversion of previously granted performance restricted stock units into shares of Issuer's common stock in connection with the vesting of the units based on underlying performance metrics.

F2: Represents the number of shares withheld by the Issuer to satisfy the Reporting Person's tax obligations incurred upon the vesting of certain restricted stock units granted to the Reporting Person under the 2016 Long-Term Incentive Plan.

F3: Each performance restricted stock unit represents a contingent right to receive one share of Issuer's common stock.

F4: The performance restricted stock units were granted on February 23, 2022, under the 2016 Long-Term Incentive Plan of the Issuer. The performance period for the performance restricted stock units was January 1, 2022 to December 31, 2024, with vesting subject to achievement and certification of pre-established performance conditions. Achievement of the performance conditions was certified by the Management Development and Compensation Committee of the Board of Directors of the Issuer on April 8, 2025.

F5: Not applicable.