X0306 4 2016-04-11 0 0000007431 ARMSTRONG WORLD INDUSTRIES INC AWI 0001509566 Grizzle Victor C/O ARMSTRONG WORLD INDUSTRIES, INC. 2500 COLUMBIA AVENUE, P.O. BOX 3001 LANCASTER PA 17603 1 1 0 0 CEO Common Stock 25307 D Restricted Stock Units Common Stock 11964 11964 D Restricted Stock Units Common Stock 3530 3530 D Stock Options 47.17 2024-02-25 Common Stock 22914 22914 D Stock Options 45.32 2023-02-20 Common Stock 25689 25689 D Stock Options 37.83 2022-02-28 Common Stock 31348 31348 D Stock Options 31.15 2021-03-02 Common Stock 31200 31200 D Stock Options 32.03 2021-01-17 Common Stock 19158 19158 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) 5,982 on the second anniversary of the grant, and (2) 5,982 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). The restricted stock units were granted to the Reporting Person on February 25, 2014 and will vest on December 31, 2016 (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). The stock options were granted on February 25, 2014 and 15,276 have vested; the remaining 7,638 unvested stock options will vest and become exercisable 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). The stock options were granted on February 20, 2013 and have vested. The stock options were granted on February 28, 2012 and have vested. The stock options were granted on March 2, 2011 and have vested. The stock options were granted on January 17, 2011 and have vested. NOTE: All derivative securities on Table II have been adjusted as a result of the spin-off of Armstrong Flooring, Inc., effective on April 1, 2016. See Exhibit 24 Power of Attorney /s/ Bryan Y.M. Tham, Attorney-in-Fact 2016-04-13