 TULSA, Okla., April 28, 2021 GLOBE NEWSWIRE -- Matrix Service Company Nasdaq: MTRX will announce results for its Fiscal Year 2021 third quarter ended March 31, 2021 after the market closes on Monday, May 10, 2021. The release will be followed by a conference call on Tuesday, May 11, 2021 at 10:30 a.m. Eastern time 09:30 a.m. Central time. 