TETRA TECH INC - Director's Dealing 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2014-02-13

Reporting Person: SALIN JANIS B (SENIOR VICE PRESIDENT)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-02-13	COMMON STOCK	M	23525	$18.07	Acquired	45394	Direct
2014-02-13	COMMON STOCK	S	23525	$28.75	Disposed	21869	Direct
2014-02-14	COMMON STOCK	M	1475	$18.07	Acquired	23344	Direct
2014-02-14	COMMON STOCK	S	1475	$28.6248	Disposed	21869	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-02-13	STOCK OPTION	$18.07	M	23525	Disposed	2014-03-06	COMMON STOCK (23525)	Direct
2014-02-14	STOCK OPTION	$18.07	M	1475	Disposed	2014-03-06	COMMON STOCK (1475)	Direct

F1: The option was fully vested as of March 6, 2010.

F2: Consists of 217 shares acquired under the Tetra Tech, Inc. Employee Stock Purchase Plan (an exempt transaction under Rule 16b-3(c)).