X0203 3 2011-06-01 0 0000866273 MATRIX SERVICE CO MTRX 0001522847 ERDMANN KENNETH L 5100 EAST SKELLY DRIVE SUITE 700 TULSA OK 74135 0 1 0 0 Vice President, Engineering COMMON STOCK 12985 D INCENTIVE STOCK OPTION (Right To Buy) 3.7 2012-10-22 COMMON STOCK 800 D INCENTIVE STOCK OPTION (Right To Buy) 4.6 2014-10-26 COMMON STOCK 1200 D INCENTIVE STOCK OPTION (Right To Buy) 8.93 2015-10-21 COMMON STOCK 1600 D INCENTIVE STOCK OPTION (Right To Buy) 12.195 2013-10-21 COMMON STOCK 800 D MATRIX SERVICE COMPANY COMMON STOCK. INCLUDES 1,125 SHARES OF MATRIX SERVICE COMPANY COMMON STOCK OWNED OUTRIGHT. THE REMAINING SHARES ARE RESTRICTED STOCK OWNED BUT NOT YET RELEASED DUE TO FUTURE VESTING REQUIREMENTS. THE STOCK OPTION BECOMES EXERCISABLE IN FIVE EQUAL ANNUAL INSTALLMENTS, COMMENCING ONE YEAR AFTER THE DATE OF THE GRANT. Kenneth L. Erdmann 2011-06-09