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THE REPORTING PERSON UNDERTAKES TO PROVIDE TO MATRIX SERVICE COMPANY, ANY SECURITY HOLDER OF MATRIX SERVICE COMPANY, OR THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION, UPON REQUEST, FULL INFORMATION REGARDING THE NUMBER OF SHARES SOLD AT EACH SEPARATE PRICE WITHIN THE RANGE SET FORTH."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"INCLUDES 29,798 SHARES OF MATRIX SERVICE COMPANY COMMON STOCK OWNED OUTRIGHT."}],"balance_after":40126,"source":{"system":"sec-edgar","filing":"0000866273-18-000090","document":"wf-form4_153731122138477.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/866273/000086627318000090/wf-form4_153731122138477.xml","form_type":"4"}},{"id":3813581,"issuer":{"id":2743,"kind":"organization","name":"MATRIX SERVICE CO","symbol":"MTRX"},"owners":[{"id":163554,"kind":"person","name":"MAXWELL TOM E","position":1,"cik":"0001268022","reported_name":"MAXWELL TOM E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2018-09-18T22:53:57.000Z","date":"2018-09-17","kind":"sale","acquired":false,"shares":9637,"price":25.3359,"value":244162.0683,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"MATRIX SERVICE COMPANY COMMON STOCK."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"THE PRICE REPORTED IS A WEIGHTED AVERAGE PRICE.  THESE SHARES WERE SOLD IN MULTIPLE TRANSACTIONS AT PRICES RANGING FROM $25.00 TO $25.75, INCLUSIVE.  THE REPORTING PERSON UNDERTAKES TO PROVIDE TO MATRIX SERVICE COMPANY, ANY SECURITY HOLDER OF MATRIX SERVICE COMPANY, OR THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION, UPON REQUEST, FULL INFORMATION REGARDING THE NUMBER OF SHARES SOLD AT EACH SEPARATE PRICE WITHIN THE RANGE SET FORTH."}],"balance_after":47889,"source":{"system":"sec-edgar","filing":"0000866273-18-000090","document":"wf-form4_153731122138477.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/866273/000086627318000090/wf-form4_153731122138477.xml","form_type":"4"}},{"id":4176835,"issuer":{"id":2743,"kind":"organization","name":"MATRIX SERVICE CO","symbol":"MTRX"},"owners":[{"id":163554,"kind":"person","name":"MAXWELL TOM E","position":1,"cik":"0001268022","reported_name":"MAXWELL TOM E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2017-11-01T22:31:38.000Z","date":"2017-10-31","kind":"grant","acquired":true,"shares":6667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"MATRIX SERVICE COMPANY COMMON STOCK."},{"field":"shares","element":"transactionShares","label":"F2","text":"RESTRICTED STOCK UNIT - EACH UNIT WILL ENTITLE THE REPORTING PERSON TO ONE SHARE OF MATRIX SERVICE COMPANY COMMON STOCK IF AND WHEN THE CONDITIONS OF THE RESTRICTION HAVE BEEN SATISFIED.  FOR THIS GRANT, 100% WILL VEST ON THE FIRST ANNIVERSARY DATE."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"NOT APPLICABLE."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"INCLUDES 38,329 SHARES OF MATRIX SERVICE COMPANY COMMON STOCK OWNED OUTRIGHT."}],"balance_after":57526,"source":{"system":"sec-edgar","filing":"0000866273-17-000110","document":"wf-form4_150957548487586.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/866273/000086627317000110/wf-form4_150957548487586.xml","form_type":"4"}},{"id":4556204,"issuer":{"id":2743,"kind":"organization","name":"MATRIX SERVICE CO","symbol":"MTRX"},"owners":[{"id":163554,"kind":"person","name":"MAXWELL TOM E","position":1,"cik":"0001268022","reported_name":"MAXWELL TOM E","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2016-11-16T00:18:47.000Z","date":"2016-11-14","kind":"grant","acquired":true,"shares":5240,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"MATRIX SERVICE COMPANY COMMON STOCK."},{"field":"shares","element":"transactionShares","label":"F2","text":"RESTRICTED STOCK UNIT - EACH UNIT WILL ENTITLE THE REPORTING PERSON TO ONE SHARE OF MATRIX SERVICE COMPANY COMMON STOCK IF AND WHEN THE CONDITIONS OF THE RESTRICTION HAVE BEEN SATISFIED.  FOR THIS GRANT, 100% WILL VEST ON THE FIRST ANNIVERSARY DATE."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"NOT APPLICABLE."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"INCLUDES 38,329 SHARES OF MATRIX SERVICE COMPANY COMMON STOCK OWNED OUTRIGHT."}],"balance_after":50859,"source":{"system":"sec-edgar","filing":"0000866273-16-000257","document":"wf-form4_147925551377356.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/866273/000086627316000257/wf-form4_147925551377356.xml","form_type":"4"}}]}