0000831641-18-000181.txt : 20181121 0000831641-18-000181.hdr.sgml : 20181121 20181121200829 ACCESSION NUMBER: 0000831641-18-000181 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20181120 FILED AS OF DATE: 20181121 DATE AS OF CHANGE: 20181121 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: CHRISTENSEN CRAIG L CENTRAL INDEX KEY: 0001206709 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-19655 FILM NUMBER: 181199084 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: 0930 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_154284889212588.xml FORM 4 X0306 4 2018-11-20 0 0000831641 TETRA TECH INC TTEK 0001206709 CHRISTENSEN CRAIG L 3475 EAST FOOTHILL BOULEVARD PASADENA, CA 91107 0 1 0 0 SVP, CIO COMMON STOCK 2018-11-20 4 A 0 9128 0 A 43034 D COMMON STOCK 2018-11-20 4 F 0 4904 63.44 D 38130 D COMMON STOCK 2018-11-20 4 F 0 383 63.44 D 37747 D COMMON STOCK 2018-11-21 4 F 0 357 62.68 D 37390 D Shares acquired pursuant to vesting of performance stock units (PSUs) earned under 2015 Equity Incentive Plan. Each PSU represented the right to receive one share of common stock. Represents the shares underlying PSUs which vested on 11/20/2018 and were withheld to pay the related tax liability. Represents the shares underlying restricted stock units (RSUs) which vested on 11/20/2018 and 11/21/2018 and were withheld to pay the related tax liability. /s/ Preston Hopson III, Attorney-in-fact for Craig L. Christensen 2018-11-21