TETRA TECH INC — Director's Dealing 2017

May 3, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2017-05-01

Reporting Person: BATRACK DAN L (Director, CHAIRMAN AND CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-01	COMMON STOCK	M	1117	$23.48	Acquired	214128	Direct
2017-05-01	COMMON STOCK	S	1117	$45.00	Disposed	213011	Direct
2017-05-02	COMMON STOCK	M	98883	$23.48	Acquired	311894	Direct
2017-05-02	COMMON STOCK	S	98883	$45.0052	Disposed	213011	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-05-01	STOCK OPTION (RIGHT TO BUY)	$23.48	M	1117	Disposed	2018-11-12	COMMON STOCK (1117)	Direct
2017-05-02	STOCK OPTION (RIGHT TO BUY)	$23.48	M	98883	Disposed	2018-11-12	COMMON STOCK (98883)	Direct

Footnotes

F1: Option became fully exercisable on November 12, 2014.

F2: All shares were sold at an exact price pursuant to a 10b5-1 automatic trading plan.

F3: $45.0052 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.00 to $45.05 pursuant to a 10b5-1 automatic trading plan.