X0607 3 2026-04-01 0 0000007431 ARMSTRONG WORLD INDUSTRIES INC AWI 0002121420 Winters Michael Carl false 2500 COLUMBIA AVENUE LANCASTER PA 17603 1 SVP, Arch Spec & Bus Dev Common Stock 635 D Restricted Stock Units Common Stock 3252 D Restricted Stock Units Common Stock 740 D Restricted Stock Units Common Stock 579 D Restricted Stock Units Common Stock 532 D Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock under the Issuer's 2022 Equity and Cash Incentive Plan. The restricted stock units were granted to the Reporting Person on December 8, 2023 and will vest in full on December 8, 2026 (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan). The restricted stock units were granted to the Reporting Person on February 21, 2024 and will vest in full on February 21, 2027 (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan). The restricted stock units were granted to the Reporting Person on February 26, 2025 and will vest in full on February 26, 2028 (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan). The restricted stock units were granted to the Reporting Person on February 25, 2026 and will vest in full on February 25, 2029 (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan). Exhibit 24 - Power of Attorney /s/ Alan M. Kidd, Attorney-in-fact 2026-04-01