1. Corporate Officers - R
2. Ritrievi Kimberly E

Insider Trading History of Ritrievi Kimberly E

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Ritrievi Kimberly E since 2018. This trader's CIK number is 1592089. At the time of last reporting, Ritrievi Kimberly E was the Director of Tetra Tech Inc. (stock ticker symbol TTEK). Also see all insider trading activities at Tetra Tech Inc.

Note that in the past Ritrievi Kimberly E also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Mativ Holdings, Inc. (MATV) by Ritrievi Kimberly E

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2025	MATV	10,000	$58,800	0	$0	0	$0
2022	MATV	1,000	$27,150	0	$0	0	$0
2020	MATV	1,000	$30,000	0	$0	0	$0
2018	MATV	2,000	$62,180	0	$0	0	$0

Yearly summary of insider trading at Tetra Tech Inc (TTEK) by Ritrievi Kimberly E

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2026	TTEK	0	$0	0	$0	20,968	$0
2024	TTEK	0	$0	6,500	$302,120	0	$0
2023	TTEK	0	$0	1,800	$271,962	0	$0
2020	TTEK	0	$0	4,076	$491,003	13,182	$486,826
2019	TTEK	0	$0	2,696	$237,671	9,170	$234,528
2018	TTEK	0	$0	4,323	$235,041	8,000	$229,440

Insider trading activities at 2 companies by Ritrievi Kimberly E:

1. Mativ Holdings, Inc. (MATV)

2. Tetra Tech Inc (TTEK)

Table 1. Insider trading of Mativ Holdings, Inc. (MATV) by Ritrievi Kimberly E

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2025-05-29	MATV	Buy	10,000	5.88	58,800
2022-05-13	SWM	Buy	1,000	27.15	27,150
2020-05-29	SWM	Buy	1,000	30.00	30,000
2018-11-12	SWM	Buy	2,000	31.09	62,180

Table 2. Insider trading of Tetra Tech Inc (TTEK) by Ritrievi Kimberly E

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2026-03-16	TTEK	Option Ex	20,968	.00	0
2024-09-11	TTEK	Sale	6,500	46.48	302,120
2023-02-08	TTEK	Sale	1,800	151.09	271,962
2020-11-16	TTEK	Option Ex	12,600	38.64	486,826
2020-11-16	TTEK	Sale	4,076	120.46	491,003
2020-11-18	TTEK	Option Ex	582	.00	0
2019-11-25	TTEK	Sale	2,696	88.16	237,671
2019-11-25	TTEK	Option Ex	8,400	27.92	234,528
2019-11-18	TTEK	Option Ex	770	.00	0
2018-12-11	TTEK	Option Ex	8,000	28.68	229,440
2018-12-11	TTEK	Sale	4,323	54.37	235,041

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Ritrievi Kimberly E (Director of Tetra Tech Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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