Matrix Service Company
A builder and maintainer of energy and industrial infrastructure, serving customers through three segments. Its Storage and Terminal Solutions group constructs cryogenic and specialty tanks plus LNG, NGL, and hydrogen terminals, its Utility and Power Infrastructure group supports LNG peak shaving facilities and utility power delivery, and its Process and Industrial Facilities group performs plant maintenance, turnarounds, and EPC work for refineries, renewable fuels, aerospace, chemicals, and mining.
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 13G/APassive | 6.8% | 1.92M | Apr 7, 2026 |
| The Vanguard Group | 13G/APassive | 0% | 0 | Mar 27, 2026 |
| HARVEY PARTNERS, LLC | 13G/APassive | 4.4% | 1.22M | Aug 14, 2025 |
| Azarias Capital Management, L.P. | 13G/APassive | 4.4% | 1.22M | Apr 9, 2025 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 13GPassive | 5.15% | 1.42M | Feb 13, 2025 |
| NEEDHAM ASSET MANAGEMENT, LLC | 13GPassive | 5.15% | 1.42M | Feb 13, 2025 |
| NEEDHAM AGGRESSIVE GROWTH FUND | 13GPassive | 5.15% | 1.42M | Feb 13, 2025 |
| GEORGE A. NEEDHAM | 13GPassive | 5.15% | 1.42M | Feb 13, 2025 |
| First Wilshire Securities Management, Inc. | 13G/APassive | 4.9% | 1.35M | Feb 13, 2025 |