TETRA TECH INC — Director's Dealing 2021

Feb 24, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2021-02-22

Reporting Person: BROWNLIE WILLIAM R (SVP, Chief Engineer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-22	COMMON STOCK	M	12788	$28.58	Acquired	99560	Direct
2021-02-22	COMMON STOCK	S	12788	$141.8217	Disposed	86772	Direct
2021-02-23	COMMON STOCK	G	2500	—	Disposed	84272	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-22	STOCK OPTION (RIGHT TO BUY)	$28.58	M	12788	Disposed	2021-11-22	COMMON STOCK (12788.0)	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: $141.8217 is an average price. Shares were sold at prices ranging from $140.43 to $142.27 per share.

F3: Bona fide gift. No compensation was given to the donor for the gifting of shares.

F4: The option became exercisable as to 25% of the shares on each anniversary of the grant date.

F5: The option granted expires 8 years after the grant date.