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( Mark One ) ☑ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - K Annual Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the fiscal year ended June 30 , 2026 or Transition Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the transition period from Delaware to Commission File No. 001-15461 MATRIX SERVICE COMPANY ( State or other jurisdiction of incorporation or organization ) 15333 JFK Blvd. , Ste . 400 Houston , Texas ( Exact name of registrant as specified in its charter ) ( Address of Principal Executive Offices ) 73-1352174 ( I.R.S. Employer Identification No. ) 77032 ( Zip Code ) Registrant's telephone number , including area code : ( 281 ) 458-8781 Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Common Stock , par value $ 0.01 per share Trading Symbol ( s ) . MTRX Name of each exchange on which registered NASDAQ Global Select Market 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 Rule 405 of the Securities Act . Yes ☐ No ☑ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes ☐ No ☑ Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes ☑ No ☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes ☑ No ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company or an emerging growth company . See definitions of " large accelerated filer " , " accelerated filer ” , “ smaller reporting company " , and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer ☐ Accelerated filer ☑ Emerging growth company ☐ Non - accelerated filer ☐ Smaller reporting company ☐ If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . □ Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . ☑ If securities are registered pursuant to Section 12 ( b ) of the Act , indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements □ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive - based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D - 1 ( b ) . ■ Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes ☐ No ☑ The aggregate market value of the registrant's common stock held by non - affiliates computed by reference to the price at which the common stock was last sold as of the last business day of the registrant's most recently completed second quarter was approximately $ 314.3 million . The number of shares of the registrant's common stock outstanding as of September 2 , 2026 was 28,291,921 shares . Documents Incorporated by Reference Certain sections of the registrant's definitive proxy statement relating to the registrant's 2026 annual meeting of stockholders , which definitive proxy statement will be filed within 120 days of the end of the registrant's fiscal year , are incorporated by reference into Part III of this Form 10 - K .