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 Mar 31, 2025
Ownership Breakdown
404
Institutional Holders
▲ 33 vs Q4
$6.18B
Total Inst. Value
▼ $123.12M vs Q4
42.68M
Shares Outstanding
freeFloat 98.33%
43.88M
13F Shares Held
▼ 749,711 vs Q4
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
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. plastics products, nec | 5.34M | 12.30% | 12.30% | $752.39B | May 2, 2025 | ▼ 139.0K |
VANGUARD GROUP INC plastics products, nec | 4.60M | 10.60% | 10.60% | $648.38B | May 9, 2025 | ▼ 45.8K |
LONDON CO OF VIRGINIA plastics products, nec | 2.72M | 6.26% | 6.26% | $383.06B | May 15, 2025 | ▼ 79.8K |
CAPITAL INTERNATIONAL INVESTORS plastics products, nec | 2.38M | 5.49% | 5.49% | $335.66B | May 12, 2025 | ▼ 103.0K |
FULLER & THALER ASSET MANAGEMENT, INC. plastics products, nec | 1.70M | 3.91% | 3.91% | $239.04B | May 13, 2025 | ▼ 218.3K |
STATE STREET CORP plastics products, nec | 1.45M | 3.33% | 3.33% | $203.70B | May 15, 2025 | ▼ 59.2K |
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC plastics products, nec | 1.34M | 3.08% | 3.08% | $188.61B | May 14, 2025 | ▲ 8.8K |
BURGUNDY ASSET MANAGEMENT LTD. plastics products, nec | 1.28M | 2.95% | 2.95% | $180.75B | May 13, 2025 | ▲ 84.2K |
NEUBERGER BERMAN GROUP LLC plastics products, nec | 1.04M | 2.38% | 2.38% | $145.90B | May 13, 2025 | ▲ 104.0K |
ALLIANCEBERNSTEIN L.P. plastics products, nec | 1.03M | 2.37% | 2.37% | $145.03B | May 15, 2025 | ▼ 166.8K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
17
Increased
+1.58M shares0
New Positions
first time holders32
Decreased
−2.29M shares0
Sold Out
fully exitedNet shares change (top 50)
710.4K
+1.58M / −2.29M
Net new holders
-15
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 5.34 million shares — equal to 12.30% of outstanding shares — as of March 31, 2025.
A total of 404 institutional investors currently hold AWI stock, with a combined institutional value of approximately $6.18 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 12.30% stake. Company insiders hold 1.67%. Data sourced from SEC Form 13F as of March 31, 2025.