X0306 4 2015-02-24 0 0000007431 ARMSTRONG WORLD INDUSTRIES INC AWI 0001509566 Grizzle Victor C/O ARMSTRONG WORLD INDUSTRIES, INC. 2500 COLUMBIA AVE LANCASTER PA 17603 0 1 0 0 Executive V.P., Armstrong Bdg Restricted Stock Units 2015-02-24 4 A 0 15710 0.00 A Common Stock 15710 15710 D Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock under the Issuer's 2011 Long Term Incentive Plan. The restricted stock units were granted to the Reporting Person on February 24, 2015 and will vest as follows: (1) 5,236 on the first anniversary of the grant; (2) 5,237 on the second anniversary of the grant; and (3) 5,237 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 2011 Long-Term Incentive Plan and the underlying grant agreement). /s/Christopher S. Parisi, Attorney-in-fact 2015-02-26