ARMSTRONG WORLD INDUSTRIES INC - Common Stock, with no par value Institutional Ownership

13F Institutional Holders and Ownership History

Type / Class
Equity / Common Stock, with no par value
Shares outstanding
43,230,709

Significant Owners of ARMSTRONG WORLD INDUSTRIES INC - Common Stock, with no par value based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
LONDON CO OF VIRGINIA 4.9% 2,135,597 The London Company 30 Sep 2025