TETRA TECH INC — Director's Dealing 2011

Nov 16, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2011-11-15

Reporting Person: BIEBER MICHAEL A (SENIOR VICE PRESIDENT)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-11-15	COMMON STOCK	M	534	$11.80	Acquired	16742	Direct
2011-11-15	COMMON STOCK	S	534	$22.3639	Disposed	16208	Direct
2011-11-15	COMMON STOCK	M	7500	$11.80	Acquired	23708	Direct
2011-11-15	COMMON STOCK	S	7500	$22.3639	Disposed	16208	Direct
2011-11-15	COMMON STOCK	S	3360	$22.5905	Disposed	12848	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-11-15	EMPLOYEE STOCK OPTION (RIGHT TO BUY)	$11.80	M	534	Disposed	2013-01-20	COMMON STOCK (534)	Direct
2011-11-15	EMPLOYEE STOCK OPTION (RIGHT TO BUY)	$11.80	M	7500	Disposed	2013-01-20	COMMON STOCK (7500)	Direct

Footnotes

F1: The option was fully vested as of January 20, 2007.