TETRA TECH INC — Director's Dealing 2021

Feb 17, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2021-02-16

Reporting Person: Amidon Derek G (SVP, Comm./Int'l Svcs. Group)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-16	COMMON STOCK	M	1395	$47.95	Acquired	8931	Direct
2021-02-16	COMMON STOCK	S	1395	$136.65	Disposed	7536	Direct
2021-02-16	COMMON STOCK	S	6052	$136.7044	Disposed	1484	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-16	STOCK OPTION (RIGHT TO BUY)	$47.95	M	1395	Disposed	2027-11-17	COMMON STOCK (1395.0)	Direct

Footnotes

F1: Amount of securities beneficially owned was updated to reflect that 58 shares of common stock were acquired by the Reporting Person on December 15, 2020, pursuant to the Tetra Tech, Inc. Employee Stock Purchase Plan (ESPP).

F2: $136.7044 is an average price. Shares were sold at prices ranging from $136.48 to $136.98 per share.

F3: The option becomes exercisable as to 25% of the Shares on each anniversary of the grant date.

F4: The option granted expires 10 years after the grant date.