0000831641-23-000123.txt : 20231205 0000831641-23-000123.hdr.sgml : 20231205 20231205190445 ACCESSION NUMBER: 0000831641-23-000123 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20231201 FILED AS OF DATE: 20231205 DATE AS OF CHANGE: 20231205 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: 231468078 MAIL ADDRESS: STREET 1: TETRA TECH, INC. STREET 2: 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: 1001 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 wk-form4_1701821076.xml FORM 4 X0508 4 2023-12-01 0 0000831641 TETRA TECH INC TTEK 0001582882 Volpi Kirsten M 3475 EAST FOOTHILL BOULEVARD PASADENA CA 91107 1 0 0 0 0 COMMON STOCK 2023-12-01 4 S 0 2228 162.7423 D 13014 D COMMON STOCK 2023-12-05 4 G 0 666 0 D 12348 D All shares sold at an exact price. 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 2023-12-05