Gibraltar Industries, Inc. (ROCK) ownership: Top institutional holder: BlackRock, Inc. ($201.30M). Insider activity: Net Seller (1 buys, 19 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 5048987.00 | $201.30M | 2026-03-31 |
| FMR LLC | 4432059.00 | $176.71M | 2026-03-31 |
| VANGUARD GROUP INC | 2863575.00 | $141.58M | 2025-12-31 |
| ALLIANCEBERNSTEIN L.P. | 2198453.00 | $108.69M | 2026-03-31 |
| BlackRock Fund Advisors | 2414415.00 | $100.56M | 2016-12-31 |
| DIMENSIONAL FUND ADVISORS LP | 1705997.00 | $68.02M | 2026-03-31 |
| STATE STREET CORP | 1345665.00 | $53.65M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1323731.00 | $52.78M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-05-07 | |
| Sell | null | 2026-05-07 |
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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.