Armstrong World Industries, Inc. (AWI) ownership: insiders 2% · institutions 105% (13F 2026-03-31). Insider activity, 90 days: 0 sales, 0 open-market buys. 2 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 5206270.00 | $857.99M | 12.3% | 2026-03-31 |
| Vanguard | 4493827.00 | $740.58M | 10.6% | 2026-03-31 |
| London Co of Virginia | 1723367.00 | $284.01M | 4.1% | 2026-03-31 |
| State Street | 1414904.00 | $233.18M | 3.3% | 2026-03-31 |
| BMO | 1225302.00 | $201.93M | 2.9% | 2026-03-31 |
| AQR Capital Management | 1119557.00 | $179.89M | 2.6% | 2026-03-31 |
| Fuller & Thaler Asset Management, Inc. | 1041354.00 | $171.62M | 2.5% | 2026-03-31 |
| Geode Capital Management | 1008332.00 | $166.21M | 2.4% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-04-28 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.