Matrix Service Company (MTRX) ownership: Top institutional holder: BlackRock Fund Advisors ($51.85M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock Fund Advisors | 2284006.00 | $51.85M | 2016-12-31 |
| BlackRock, Inc. | 2014217.00 | $23.12M | 2026-03-31 |
| VANGUARD GROUP INC | 1526777.00 | $17.86M | 2025-12-31 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 1435000.00 | $16.47M | 2026-03-31 |
| GENDELL JEFFREY L | 1231307.00 | $14.14M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1196787.00 | $13.74M | 2026-03-31 |
| AMERICAN CENTURY COMPANIES INC | 981639.00 | $11.27M | 2026-03-31 |
| WESTERLY CAPITAL MANAGEMENT, LLC | 965000.00 | $11.08M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-12 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-26 | |
| Sell | null | 2026-05-08 |
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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.