Armstrong Closes Secondary Stock Offering

Lancaster, PA, Nov. 15, 2012-- Armstrong said it has closed its secondary public offering of 5.2 million common shares held by The Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust and Armor TPG Holdings, L.P.

The price was $51 per share. The underwriters will have a 30-day option to purchase up to an additional 780,000 common shares. Armstrong itself has not sold any shares and has not received any proceeds from the offering.