0000831641-21-000160.txt : 20211209 0000831641-21-000160.hdr.sgml : 20211209 20211209183925 ACCESSION NUMBER: 0000831641-21-000160 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20211207 FILED AS OF DATE: 20211209 DATE AS OF CHANGE: 20211209 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Volpi Kirsten M CENTRAL INDEX KEY: 0001582882 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-19655 FILM NUMBER: 211483172 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: 1003 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_163909315533150.xml FORM 4 X0306 4 2021-12-07 0 0000831641 TETRA TECH INC TTEK 0001582882 Volpi Kirsten M 3475 EAST FOOTHILL BOULEVARD PASADENA, CA 91107 1 0 0 0 COMMON STOCK 2021-12-07 4 G 0 978 0 D 15289 D COMMON STOCK 2021-12-07 4 S 0 700 189.6175 D 14589 D Bona fide gift. No compensation was given to the donor for the gifting of shares. /s/ Preston Hopson, Attorney-in-fact for Kirsten M. Volpi 2021-12-09