TETRA TECH INC — Director's Dealing 2020

May 8, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2020-05-07

Reporting Person: Volpi Kirsten M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-05-07	COMMON STOCK	M	4000	$23.52	Acquired	18208	Direct
2020-05-07	COMMON STOCK	S	1351	$70.5631	Disposed	16857	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-05-07	COMMON STOCK	$23.52	M	4000	Disposed	2021-07-29	COMMON STOCK (4000.0)	Direct

Footnotes

F1: $70.5631 is an average price. Shares were sold at prices ranging from $70.5336 to $70.5836 per share.

F2: The option became exercisable as to 100% of the shares on the anniversary of the grant date.