Armstrong World Industries, Inc.
Armstrong World Industries, Inc. (AWI) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AWI · as of Sep 30, 2025
Ownership Breakdown
507
Institutional Holders
▲ 79 vs Q2
$8.45B
Total Inst. Value
▲ $1.34B vs Q2
42.68M
Shares Outstanding
freeFloat 98.33%
43.14M
13F Shares Held
▼ 576,778 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
AWI largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. plastics products, nec | 5.29M | 12.19% | 12.19% | $1.04T | Nov 12, 2025 | ▲ 59.8K |
VANGUARD GROUP INC plastics products, nec | 4.49M | 10.35% | 10.35% | $880.46B | Nov 7, 2025 | ▼ 60.8K |
CAPITAL INTERNATIONAL INVESTORS plastics products, nec | 2.30M | 5.30% | 5.30% | $450.59B | Nov 13, 2025 | ▼ 132.2K |
LONDON CO OF VIRGINIA plastics products, nec | 2.14M | 4.92% | 4.92% | $418.60B | Nov 14, 2025 | ▼ 165.3K |
STATE STREET CORP plastics products, nec | 1.38M | 3.17% | 3.17% | $269.63B | Nov 14, 2025 | ▼ 7.2K |
BURGUNDY ASSET MANAGEMENT LTD. plastics products, nec | 1.31M | 3.03% | 3.03% | $257.18B | Nov 12, 2025 | ▼ 7.4K |
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC plastics products, nec | 1.28M | 2.96% | 2.96% | $251.44B | Nov 13, 2025 | ▼ 35.1K |
FULLER & THALER ASSET MANAGEMENT, INC. plastics products, nec | 1.02M | 2.36% | 2.36% | $200.84B | Nov 13, 2025 | ▼ 165.1K |
NEUBERGER BERMAN GROUP LLC plastics products, nec | 996.6K | 2.30% | 2.30% | $195.35B | Nov 12, 2025 | ▼ 8.9K |
GEODE CAPITAL MANAGEMENT, LLC plastics products, nec | 953.5K | 2.20% | 2.20% | $186.93B | Nov 12, 2025 | ▲ 10.2K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
18
Increased
+2.14M shares0
New Positions
first time holders32
Decreased
−2.37M shares0
Sold Out
fully exitedNet shares change (top 50)
225.4K
+2.14M / −2.37M
Net new holders
-14
0 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
AWI insider trading · insider activity
Source: SEC Form 4
9
Buy transactions
14
Sell transactions
0.64
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Grizzle Victor Executive Chair | Apr 28, 2026 | Tax Withhold | 31,671 | $169.84 | $5.38M | 505.8K | Form 4 ↗ |
Winters Michael Carl SVP, Arch Spec & Bus Dev | Apr 8, 2026 | Tax Withhold | 1,629 | $172.77 | $281.4K | 2.7K | Form 4 ↗ |
Hershey Mark A President & CEO | Apr 8, 2026 | Tax Withhold | 5,839 | $172.77 | $1.01M | 64.8K | Form 4 ↗ |
Grizzle Victor Executive Chair | Apr 8, 2026 | Tax Withhold | 42,550 | $172.77 | $7.35M | 464.7K | Form 4 ↗ |
Crager Jill A. SVP Sales & Digital Mktg | Apr 8, 2026 | Tax Withhold | 1,789 | $172.77 | $309.1K | 6.7K | Form 4 ↗ |
Calzaretta Christopher P. SVP & CFO | Apr 8, 2026 | Tax Withhold | 3,980 | $172.77 | $687.6K | 11.2K | Form 4 ↗ |
Burge James T. Vice President & Controller | Apr 8, 2026 | Tax Withhold | 877 | $172.77 | $151.5K | 3.2K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Armstrong World Industries, Inc. (AWI) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 1.67%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Armstrong World Industries, Inc. is BLACKROCK, INC., holding approximately 5.29 million shares — equal to 12.19% of outstanding shares — as of September 30, 2025.
A total of 507 institutional investors currently hold AWI stock, with a combined institutional value of approximately $8.45 billion as of the most recent 13F filing period.
Frequently asked questions
AWI ownershipArmstrong World Industries, Inc. (AWI) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is BLACKROCK, INC. with a 12.19% stake. Company insiders hold 1.67%. Data sourced from SEC Form 13F as of September 30, 2025.