Gibraltar Industries, Inc. (ROCK) ownership: insiders 1% · institutions 109% (13F 2026-03-31). Insider activity, 90 days: 0 sales, 0 open-market buys. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 5048987.00 | $201.30M | 17.0% | 2026-03-31 |
| FMR (Fidelity) | 4432059.00 | $176.71M | 14.9% | 2026-03-31 |
| Vanguard | 2892373.00 | $115.32M | 9.8% | 2026-03-31 |
| AllianceBernstein | 2198453.00 | $108.69M | 7.4% | 2026-03-31 |
| Dimensional Fund Advisors | 1705997.00 | $68.02M | 5.8% | 2026-03-31 |
| State Street | 1345665.00 | $53.65M | 4.5% | 2026-03-31 |
| Barrow Hanley Mewhinney & Strauss LLC | 1169975.00 | $46.65M | 3.9% | 2026-03-31 |
| Geode Capital Management | 777629.00 | $31.01M | 2.6% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-19 | |
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-06-30 | |
| Buy | null | 2026-05-26 | |
| Sell | null | 2026-05-26 |
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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.