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Livermore
Livermore
ZHEN

Armstrong World Industries Inc

AWI
Exchange
NYSE
Industry
Plastics Products, NEC
SEC CIK
0000007431

No open-market purchases or sales by Armstrong World Industries Inc insiders were filed in the last 90 days; 478 institutions reported holding it in 13F filings for Q2 2026, worth $6.94B in total; no superinvestor holds it.

Holders of 5% or more of AWI

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Armstrong World Industries Inc, largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of AWI
HolderLatest formStakeChangeFirst filedLatest filingFiling
BlackRock, Inc.13G/A11.50%5.01M shares–Jul 18, 20251 filingJul 18, 2025SEC
Vanguard Capital Management LLC13G5.24%2.25M sharesNewApr 29, 20261 filingApr 29, 2026SEC
Vanguard Portfolio Management LLC13G5.23%2.24M sharesNewApr 28, 20261 filingApr 28, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

25 Schedule 13D and 13G filings on Armstrong World Industries Inc, newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on AWI
Filed (ET)FilerFormStakeChangeEvent dateFiling
May 14, 202612:52 PM ETCapital International Investors13G/A1.80%782.1K shares–Below 5%Mar 31, 2026SEC
Apr 29, 20264:46 PM ETVanguard Capital Management LLC13G5.24%2.25M sharesNewMar 31, 2026SEC
Apr 28, 20264:08 PM ETVanguard Portfolio Management LLC13G5.23%2.24M sharesNewMar 31, 2026SEC
Mar 26, 20263:44 PM ETVanguard Group Inc13G/A0.00%0 shares–Below 5%Mar 13, 2026SEC
Nov 14, 20259:00 AM ETLondon Co of Virginia13G/A4.94%2.14M shares–Below 5%Sep 30, 2025SEC
Jul 18, 20251:35 PM ETBlackRock, Inc.13G/A11.50%5.01M shares–Jun 30, 2025SEC
May 10, 2024Capital International Investors13G/AOld format–––SEC
Feb 14, 2024London Co of Virginia13G/AOld format–––SEC
Feb 9, 2024Capital International Investors13G/AOld format–––SEC
Jan 10, 2024Vanguard Group Inc13G/AOld format–––SEC
Jan 8, 20244:35 PM ETBlackRock Inc.13GOld format–New–SEC
Feb 14, 2023London Co of Virginia13G/AOld format–––SEC
Feb 14, 2023Price T Rowe Associates Inc13G/AOld format–––SEC
Feb 13, 2023Capital International Investors13G/AOld format–––SEC
Feb 9, 2023Vanguard Group Inc13G/AOld format–––SEC
Feb 14, 2022London Co of Virginia13G/AOld format–––SEC
Feb 11, 2022Capital International Investors13G/AOld format–––SEC
Feb 10, 2022Lazard Asset Management LLC13G/AOld format–––SEC
Feb 9, 2022Vanguard Group Inc13G/AOld format–––SEC
Jan 10, 2022Price T Rowe Associates Inc13G/AOld format–––SEC
Feb 16, 2021Capital International Investors13G/AOld format–––SEC
Feb 16, 2021London Co of Virginia13G/AOld format–––SEC
Feb 16, 2021Price T Rowe Associates Inc13G/AOld format–––SEC
Feb 10, 2021Lazard Asset Management LLC13G/AOld format–––SEC
Feb 10, 2021Vanguard Group Inc13G/AOld format–––SEC

Form 144: proposed insider sales

8 notices from officers, directors and other affiliates planning to sell Armstrong World Industries Inc shares, newest first.

Form 144 notices for AWI
Filed (ET)SellerShares to sellMarket valuePlanned saleBrokerFiling
Sep 11, 20259:46 AM ETThomas Cherryl TFormer director462$91.0KSep 11, 2025Fidelity Brokerage Services LLCSEC
Aug 8, 20255:04 PM ETOsborne William HDirector100$18.9KAug 8, 2025Fidelity Brokerage Services LLCSEC
Aug 4, 20252:42 PM ETThomas Cherryl TFormer director500$94.6KAug 4, 2025Fidelity Brokerage Services LLCSEC
Aug 6, 20244:19 PM ETJames C MelvilleDirector10.3K$1.27MAug 6, 2024Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Aug 5, 20245:28 PM ETJames C MelvilleDirector5.41K$657.8KAug 5, 2024Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Aug 2, 20244:04 PM ETJames C MelvilleDirector10.0K$1.26MAug 2, 2024Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Aug 1, 202412:31 PM ETKirchner-King Dawn M.Officer364$47.9KAug 1, 2024Fidelity Brokerage Services LLCSEC
Dec 28, 202310:13 AM ETGrizzle VictorOfficer · Director22.9K$2.28MDec 28, 202310b5-1Fidelity Brokerage Services LLCSEC