Kirby McInerney LLP is conducting an investigation into Armstrong World Industries, Inc. (NYSE:AWI) regarding possible violations of federal securities laws following the company's disappointing financial performance in its fourth quarter and full-year 2025 results. During an earnings call on February 24, 2026, Armstrong World acknowledged that its sales volumes were lower than anticipated and that there was no expected recovery after reopening. The company also reported delays in several significant projects within its Architectural Specialties segment, which contributed to a lack of operating leverage. As a result of this negative news, Armstrong's stock price experienced a substantial decline of approximately 10%, falling from $192.83 to $174.30 per share. Currently, no lawsuits have been filed, but the investigation is ongoing to determine if claims can be pursued under federal securities laws. Investors who purchased Armstrong World securities and have information related to the investigation are urged to contact Kirby McInerney LLP for a no-cost consultation regarding their rights and interests.