| SC 13D/A | 2014-12-17 | VA Partners I, LLC | ARMSTRONG WORLD INDUSTRIES INC | 9,200,000 | 16.8% | EDGAR |
| SC 13G/A | 2014-11-10 | WELLINGTON MANAGEMENT CO LLP | ARMSTRONG WORLD INDUSTRIES INC | 1,557,179 | 2.8% | EDGAR |
| SC 13G | 2014-08-28 | Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust | ARMSTRONG WORLD INDUSTRIES INC | 9,533,118 | 17.4% | EDGAR |
| SC 13G/A | 2014-08-11 | WELLINGTON MANAGEMENT CO LLP | ARMSTRONG WORLD INDUSTRIES INC | 4,616,433 | 8.4% | EDGAR |
| SC 13G | 2014-08-11 | Eton Park Capital Management, L.P. | ARMSTRONG WORLD INDUSTRIES INC | 1,283,396 | 2.3% | EDGAR |
| SC 13D | 2014-08-01 | VA Partners I, LLC | ARMSTRONG WORLD INDUSTRIES INC | 9,200,000 | 16.8% | EDGAR |
| SC 13D/A | 2014-03-12 | Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust | ARMSTRONG WORLD INDUSTRIES INC | 9,533,118 | 17.4% | EDGAR |
| SC 13D/A | 2014-03-11 | TPG Advisors VI, Inc. | ARMSTRONG WORLD INDUSTRIES INC | - | 0.0% | EDGAR |
| SC 13G/A | 2014-02-14 | FMR LLC | ARMSTRONG WORLD INDUSTRIES INC | 2,932,284 | 5.4% | EDGAR |
| SC 13G/A | 2014-02-14 | SAC Capital Advisors LP | ARMSTRONG WORLD INDUSTRIES INC | 285,374 | 0.5% | EDGAR |
| SC 13G/A | 2014-02-14 | WELLINGTON MANAGEMENT CO LLP | ARMSTRONG WORLD INDUSTRIES INC | 7,481,601 | 13.8% | EDGAR |
| SC 13G/A | 2013-12-10 | FMR LLC | ARMSTRONG WORLD INDUSTRIES INC | 2,931,492 | 5.4% | EDGAR |
| SC 13G | 2013-11-14 | SAC Capital Advisors LP | ARMSTRONG WORLD INDUSTRIES INC | 2,632,243 | 4.9% | EDGAR |
| SC 13D/A | 2013-11-13 | Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust | ARMSTRONG WORLD INDUSTRIES INC | 13,433,118 | 24.8% | EDGAR |
| SC 13D/A | 2013-11-13 | TPG Advisors VI, Inc. | ARMSTRONG WORLD INDUSTRIES INC | 13,433,118 | 24.8% | EDGAR |
| SC 13D/A | 2013-09-13 | Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust | ARMSTRONG WORLD INDUSTRIES INC | 19,433,118 | 35.9% | EDGAR |
| SC 13D/A | 2013-09-13 | TPG Advisors VI, Inc. | ARMSTRONG WORLD INDUSTRIES INC | 19,433,118 | 35.9% | EDGAR |
| SC 13G | 2013-08-07 | WELLINGTON MANAGEMENT CO LLP | ARMSTRONG WORLD INDUSTRIES INC | 6,084,591 | 10.3% | EDGAR |
| SC 13G/A | 2013-02-14 | FMR LLC | ARMSTRONG WORLD INDUSTRIES INC | 8,127,799 | 13.8% | EDGAR |
| SC 13D/A | 2012-12-12 | Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust | ARMSTRONG WORLD INDUSTRIES INC | 31,490,500 | 53.5% | EDGAR |