<SEC-DOCUMENT>0001104659-22-107222-index.html : 20221011 <SEC-HEADER>0001104659-22-107222.hdr.sgml : 20221011 <ACCEPTANCE-DATETIME>20221007192007 ACCESSION NUMBER: 0001104659-22-107222 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 13 CONFORMED PERIOD OF REPORT: 20221007 ITEM INFORMATION: Entry into a Material Definitive Agreement ITEM INFORMATION: Material Modifications to Rights of Security Holders ITEM INFORMATION: Other Events ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20221011 DATE AS OF CHANGE: 20221007 FILER: COMPANY DATA: COMPANY CONFORMED NAME: TETRA TECH INC CENTRAL INDEX KEY: 0000831641 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-ENGINEERING SERVICES [8711] IRS NUMBER: 954148514 STATE OF INCORPORATION: DE FISCAL YEAR END: 1002 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 000-19655 FILM NUMBER: 221301823 BUSINESS ADDRESS: STREET 1: 3475 EAST FOOTHILL BOULEVARD CITY: PASADENA STATE: CA ZIP: 91107 BUSINESS PHONE: 6263514664 MAIL ADDRESS: STREET 1: 3475 EAST FOOTHILL BOULEVARD CITY: PASADENA STATE: CA ZIP: 91107 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>tm2227840d1_8k.htm <DESCRIPTION>FORM 8-K <TEXT> Document 1 - file: tm2227840d1_8k.htm
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