X0609 4 2026-04-01 0000007431 ARMSTRONG WORLD INDUSTRIES INC AWI 0002123771 Cicali Jessica Marie false 2500 COLUMBIA AVENUE LANCASTER PA 17603 1 SVP, GC & CCO, Secretary 0 Restricted Stock Units 2026-04-01 4 A 0 1811 0 A Common Stock 1811 1811 D Restricted Stock Units 2026-04-01 4 A 0 1116 0 A Common Stock 1116 1116 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. On April 1, 2026, the Reporting Person was granted 1,811 restricted stock units, which vest as follows: (1) 603 on the first anniversary of the grant, (2) 604 on the second anniversary of the grant and (3) 604 on the third anniversary of the grant (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). Price of Derivative Security is $0. The restricted stock units were granted to the Reporting Person on April 1, 2026 and will vest in full on April 1, 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). /s/ Jessica Marie Cicali 2026-04-02