TETRA TECH INC — Director's Dealing 2013

Nov 19, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2013-11-16

Reporting Person: BIEBER MICHAEL A (SENIOR VICE PRESIDENT)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-11-16	COMMON STOCK	M	500	—	Acquired	16275	Direct
2013-11-16	COMMON STOCK	F	188	$28.87	Disposed	16087	Direct
2013-11-18	COMMON STOCK	M	9255	$24.56	Acquired	25342	Direct
2013-11-18	COMMON STOCK	M	745	$24.56	Acquired	26087	Direct
2013-11-18	COMMON STOCK	S	9255	$28.8982	Disposed	16832	Direct
2013-11-18	COMMON STOCK	S	745	$28.8982	Disposed	16087	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-11-16	RESTRICTED STOCK UNITS	$0	M	500	Disposed	2016-11-16	COMMON STOCK (500)	Direct
2013-11-18	STOCK OPTION	$24.56	M	9255	Disposed	2014-01-20	COMMON STOCK (9255)	Direct
2013-11-18	STOCK OPTION	$24.56	M	745	Disposed	2014-01-20	COMMON STOCK (745)	Direct

Footnotes

F1: On November 16, 2013, 500 restricted stock units (RSUs) awarded in November 2012 vested. Of the vested RSUs, 188 underlying shares were withheld to pay the related tax liability.

F2: The option was fully vested as of January 20, 2005.

F3: On November 16, 2013, 500 restricted stock units (RSUs) awarded in November 2012 vested. The shares of common stock into which such vested RSUs converted are reported in Table I of this Form 4.

F4: Represents the conversion upon vesting of restricted stock units into common stock.