TETRA TECH INC — Director's Dealing 2021

Feb 19, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2021-02-18

Reporting Person: LEMMON RICHARD A (SVP, Corporate Administration)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-18	COMMON STOCK	M	1950	$47.95	Acquired	48247	Direct
2021-02-18	COMMON STOCK	S	2722	$137.25	Disposed	45525	Direct
2021-02-19	COMMON STOCK	M	2648	$47.95	Acquired	48173	Direct
2021-02-19	COMMON STOCK	S	2648	$138.9514	Disposed	45525	Direct
2021-02-19	COMMON STOCK	S	8060	$138.9034	Disposed	37465	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-18	STOCK OPTION (RIGHT TO BUY)	$47.95	M	1950	Disposed	2027-11-17	COMMON STOCK (1950.0)	Direct
2021-02-19	STOCK OPTION (RIGHT TO BUY)	$47.95	M	2648	Disposed	2027-11-17	COMMON STOCK (2648.0)	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: $138.9514 is an average price. Shares were sold at prices ranging from $138.79 to $139.08 per share.

F3: $138.9034 is an average price. Shares were sold at prices ranging from $138.57 to $139.19 per share.

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

F5: The option granted expires 10 years after the grant date.