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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
831641	Tetra Tech Inc	TTEK	Services-Engineering Services (8711)	954148514

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1188787	Kenneth J Thompson	3475 East Foothill Boulevard Pasadena CA 91107		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Disposition	2023-11-20	950	$166.03	16,886	No	4	S	Direct
Common Stock	Disposition	2023-11-20	3,510	$165.71	13,376	No	4	S	Direct
Common Stock	Acquisiton	2023-11-18	380	$0.00	13,756	No	4	M	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	S	Direct
No	4	S	Direct
No	4	M	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)	Disposition	2023-11-18	380	$0.00	380	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2023-11-18		No	4	M	Direct

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $165.95 to $166.07, inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $165.63 to $165.91, inclusive.
The restricted stock units (RSUs) become vested as to 100% of the shares underlying the RSUs on November 18, 2023.
The RSUs are exercisable at the time of vesting and do not have a set expiration date.