SEC Form 4 · accession 0000831641-17-000144

TETRA TECH INC · TTEK

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — CHAIRMAN AND CEO · Director

Period of report

Dec 6, 2017

Accepted (ET)

Dec 7, 2017 · 7:35 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0000831641

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
COMMON STOCK	Dec 6, 2017	M	10,856	$24.26	A	286,533	D
COMMON STOCK^F1	Dec 6, 2017	S	10,856	$48.7644	D	275,677	D
COMMON STOCK	Dec 7, 2017	M	12,341	$24.26	A	288,018	D
COMMON STOCK^F2	Dec 7, 2017	S	12,341	$48.7483	D	275,677	D
COMMON STOCK	Dec 7, 2017	M	8,968	$28.58	A	284,645	D
COMMON STOCK^F3	Dec 6, 2017	S	8,968	$48.5586	D	275,677	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
STOCK OPTION (RIGHT TO BUY)^F4	$24.26	Dec 6, 2017	M	10,856	D	Nov 16, 2016	Nov 16, 2020	COMMON STOCK	10,856	91,644	D
STOCK OPTION (RIGHT TO BUY)^F4	$24.26	Dec 7, 2017	M	12,341	D	Nov 16, 2016	Nov 16, 2020	COMMON STOCK	12,341	79,303	D
STOCK OPTION (RIGHT TO BUY)^F5	$28.58	Dec 7, 2017	M	8,968	D	Nov 22, 2017	Nov 22, 2021	COMMON STOCK	8,968	107,286	D

F1$48.7644 is an average price. Shares were sold at prices ranging from $48.75to $48.85 per share.
F2$48.7483 is an average price. Shares were sold at prices ranging from $48.65 to $48.85 per share.
F3$48.5586 is an average price. Shares were sold at prices ranging from $48.50 to $48.65 per share.
F4The option was fully exercisable on November 16, 2016.
F5The option was fully exercisable on November 22, 2017.