Matrix Service | 4: Statement of changes in beneficial ownership of securities-Director MILLER JAMES HARRY
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Officer DURKIN KEVIN A
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Officer HEWITT JOHN R
Matrix Service | SC 13G/A: Statement of acquisition of beneficial ownership by individuals (Amendment)-Harvey Partners, LLC(5.2%)
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Officer DURKIN KEVIN A
Matrix Service | SC 13G/A: Statement of acquisition of beneficial ownership by individuals (Amendment)-First Wilshire Securities Management, Inc.(8.0%)
Matrix Service | SC 13G/A: Statement of acquisition of beneficial ownership by individuals (Amendment)-Dimensional Fund Advisors LP(4.3%)
Matrix Service | SC 13G/A: Statement of acquisition of beneficial ownership by individuals (Amendment)-Royce & Associates, LP 52-2343049(3.29%)
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Officer SHEETS JUSTIN D
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Director Bustamante Jose Luis M.
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Director Conner Carlin G.
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Director Hinrichs Liane K
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Director Carnes Martha Z.
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Director CHANDLER JOHN D
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Director MILLER JAMES HARRY
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Officer HEWITT JOHN R
Matrix Service | 3: Initial statement of beneficial ownership of securities-Officer MONTALBANO DOUGLAS J
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Officer DURKIN KEVIN A
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Officer SHEETS JUSTIN D
Matrix Service | 4: Statement of changes in beneficial ownership of securities-Officer AUSTIN NANCY E
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