Armstrong World Industries Inc.

AWI·NYSE·$159.70Share Price as of 11/2·$7BMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/27/26 10-QQ2 ended 06/30/2607/28/26 10-QQ1 ended 03/31/2604/28/26 10-KFY 202502/24/26 10-QQ3 ended 09/30/2510/28/25

Disclosures

8-KCurrent report10/27/26 8-KCurrent report10/21/26 8-KCurrent report10/07/26 8-KCurrent report09/01/26 8-KCurrent report07/30/26

Prospectuses and Registrations

S-8Registration of securities for employees06/29/22 S-3ASRAutomatic shelf registration04/30/21 S-8Registration of securities for employees12/15/20 S-3ASRAutomatic shelf registration04/30/18 S-8Registration of securities for employees07/11/16

Proxies

DEF 14ADefinitive proxy04/30/26 DEFA14AAdditional proxy materials04/30/26 DEF 14ADefinitive proxy04/28/25 DEFA14AAdditional proxy materials04/28/25 DEF 14ADefinitive proxy04/29/24

Ownership

Form 3Initial insider ownership09/10/26 Form 4Insider transaction09/10/26 Form 4Insider transaction06/15/26 Form 4Insider transaction06/15/26 Form 4Insider transaction06/15/26

Other

SDConflict Minerals disclosure05/27/26 ARSAnnual report to shareholders04/30/26 SDConflict Minerals disclosure05/28/25 ARSAnnual report to shareholders04/28/25 SDConflict Minerals disclosure05/31/24