TETRA TECH INC — Director's Dealing 2016

May 3, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2016-05-02

Reporting Person: HADEN PATRICK C (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-05-02	COMMON STOCK	M	8000	$18.87	Acquired	18055	Direct
2016-05-02	COMMON STOCK	S	8000	$30.1404	Disposed	10555	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-05-02	STOCK OPTION	$18.87	M	8000	Disposed	2018-03-02	COMMON STOCK (8000)	Direct

Footnotes

F1: The option became exercisable as to 100% of the shares on the anniversary of the grant date.

F2: $30.1404 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.14 to $30.15.