Matrix Service pany(MTRX) - 2021 Q4 - Annual Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended June 30, 2021 or Registrant's telephone number, including area code: (918) 838-8822 Securities registered pursuant to Section 12(b) of the Act: | | | Securities Registered Pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rul ...