0000831641-17-000088.txt : 20171122 0000831641-17-000088.hdr.sgml : 20171122 20171122162056 ACCESSION NUMBER: 0000831641-17-000088 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20171121 FILED AS OF DATE: 20171122 DATE AS OF CHANGE: 20171122 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Amidon Derek G CENTRAL INDEX KEY: 0001721981 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-19655 FILM NUMBER: 171220145 MAIL ADDRESS: STREET 1: 3475 EAST FOOTHILL BOULEVARD CITY: PASADENA STATE: CA ZIP: 91107 ISSUER: 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: 0928 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 4 1 wf-form4_151138564197867.xml FORM 4 X0306 4 2017-11-21 0 0000831641 TETRA TECH INC TTEK 0001721981 Amidon Derek G 3475 EAST FOOTHILL BOULEVARD PASADENA CA 91107 0 1 0 0 SVP COMMON STOCK 2017-11-21 4 F 0 49 50 D 12563 D 49 of the shares underlying restricted stock which vested on 11/21/2017 were withheld to pay the related tax liability. JANIS B. SALIN FOR DEREK G. AMIDON 2017-11-22