TULSA, Okla., April 26, 2018 (GLOBE NEWSWIRE) — Matrix Service Company (Nasdaq:MTRX) will announce results for the Third quarter of fiscal 2018 on Wednesday, May 9, 2018 after the market closes followed by a conference call on Thursday, May 10, 2018 at 10:30 a.m. Eastern time /09:30 a.m. Central time.