UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. 1. Name and Address of Reporting Person(s) Lackey, Paul K. 4502 East 41st Street, Suite 3B33 Tulsa, OK 74135 2. Issuer Name and Ticker or Trading Symbol Matrix Service Company (MTRX) 3. I.R.S. Identification Number of Reporting Person, if an entity (Voluntary) 4. Statement for Month/Year 04/03 5. If Amendment, Date of Original (Month/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) [X] Director [ ] 10% Owner [ ] Officer (give title below) [ ] Other (specify below) 7. Individual or Joint/Group Filing (Check Applicable Line) [X] Form filed by One Reporting Person [ ] Form filed by More than One Reporting Person Table I Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned ------------------------------------------------------------------------------------------------------------------------------------ 1)Title of Security 2)Trans- 3.Trans- 4.Securities Acquired(A) 5)Amount of 6) 7)Nature of action action or Disposed of (D) Securities Indirect Date Code A Beneficially D Beneficial (Month/ or Owned at or Ownership Day/Year) Code V Amount D Price End of Month I ------------------------------------------------------------------------------------------------------------------------------------ Table II (PART 1) Derivative Securities Acquired, Disposed of, or Beneficially Owned (Columns 1 through 6) ------------------------------------------------------------------------------------------------------------------------------------ 1)Title of Derivative 2)Conversion 3)Trans- 4)Trans- 5)Number of Derivative 6)Date Exercisable and Security or Exercise action action Securities Acquired (A) Expiration Date Price of Date Code or Disposed of (D) Derivative Security Code V A D Exercisable Expiration ------------------------------------------------------------------------------------------------------------------------------------ Non-Qualified Stock Option $6.050 10/23/11 (right to buy) Non-Qualified Stock Option $7.400 10/22/12 (right to buy) Phantom Shares 06/01/08 Non-Qualified Stock Option $4.250 10/18/10 (right to buy) Phantom Shares (1) 04/15/03 A 131 (2) Table II (PART 2) Derivative Securities Acquired, Disposed of, or Beneficially Owned (Columns 1,3 and 7 through 11) ------------------------------------------------------------------------------------------------------------------------------------ 1)Title of Derivative 3)Trans- 7)Title and Amount 8)Price 9)Number of 10) 11)Nature of Security action of Underlying of Deri- Derivative Indirect Date Securities vative Securities D Beneficial Amount or Security Beneficially or Ownership Number of Owned at I - Title Shares End of Month ------------------------------------------------------------------------------------------------------------------------------------ Non-Qualified Stock Option Common Stock 5,000 5,000 D Direct (right to buy) Non-Qualified Stock Option Common Stock 5,000 5,000 D Direct (right to buy) Phantom Shares Common Stock 5,340 5,340 D Direct Non-Qualified Stock Option Common Stock 5,000 5,000 D Direct (right to buy) Phantom Shares (1) 04/15/03 Common Stock 131 131 D DirectExplanation of Responses: (1) Matrix Service Company Common Stock (2) The SAR became 100% exercisable upon grant. SIGNATURE OF REPORTING PERSON /S/ Lackey, Paul K. DATE 04/16/03