Form SCHEDULE 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0002100121-26-000101
Filing Date
2026-04-28
Accepted
2026-04-28 16:08:05
Documents
1
X0202

Document Format Files

Seq Description Document Type Size
1 primary_doc.html SCHEDULE 13G  
1 primary_doc.xml SCHEDULE 13G 5653
  Complete submission text file 0002100121-26-000101.txt   7438
Mailing Address 2500 COLUMBIA AVE LANCASTER PA 17603
Business Address 2500 COLUMBIA AVE LANCASTER PA 17603 7173970611
ARMSTRONG WORLD INDUSTRIES INC (Subject) CIK: 0000007431 (see all company filings)

EIN.: 230366390 | State of Incorp.: PA | Fiscal Year End: 1231
Type: SCHEDULE 13G | Act: 34 | File No.: 005-30703 | Film No.: 26907729
SIC: 3089 Plastics Products, NEC
(CF Office: 08 Industrial Applications and Services)

Mailing Address 100 VANGUARD BLVD MALVERN PA 19355
Business Address 100 VANGUARD BLVD MALVERN PA 19355 610-669-6148
VANGUARD PORTFOLIO MANAGEMENT LLC (Filed by) CIK: 0002100121 (see all company filings)

EIN.: 392888838 | State of Incorp.: PA | Fiscal Year End: 1231
LEI: 529900YN99W7NU4H6B84
Type: SCHEDULE 13G