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) Hall, Michael J. 10701 East Ute Street Tulsa, OK 74116-1517 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 [X] Officer (give title below) [ ] Other (specify below) SVP Finance/CFO 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 ------------------------------------------------------------------------------------------------------------------------------------ Common Stock (1) 04/03/03 S 8,000 D $10.750 97,772 I by Trust 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 ------------------------------------------------------------------------------------------------------------------------------------ Incentive Stock Option (right $4.250 10/18/10 to buy) Incentive Stock Option (right $3.781 04/21/09 to buy) Incentive Stock Option (right $6.050 10/23/11 to buy) Incentive Stock Option (right $7.400 10/22/12 to buy) Non-Qualified Stock Option $3.781 04/21/09 (right to buy) Non-Qualified Stock Option $4.250 10/18/10 (right to buy) 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 ------------------------------------------------------------------------------------------------------------------------------------ Incentive Stock Option (right Common Stock 16,000 16,000 D Direct to buy) Incentive Stock Option (right Common Stock 12,000 12,000 D Direct to buy) Incentive Stock Option (right Common Stock 20,000 20,000 D Direct to buy) Incentive Stock Option (right Common Stock 20,000 20,000 D Direct to buy) Non-Qualified Stock Option Common Stock 9,228 9,228 D Direct (right to buy) Non-Qualified Stock Option Common Stock 4,000 4,000 D Direct (right to buy)Explanation of Responses: (1) Matrix Service Company Common Stock SIGNATURE OF REPORTING PERSON /S/ Hall, Michael J. DATE 04/04/03