Tetra Tech TTEK Insider Ownership

NASDAQ TTEK

$37.00 +0.43 (+1.18%)

At close: Aug 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

1.65Mn Shares

Insider Ownership Statistics

as of 30 Jun, 2026

Insider Ownership

0.093%

■0% pp QoQ

Shares Held by Insiders

244.58K

filed for Jun 2026

■0.00% QoQ

Shares Outstanding

262.73Mn

262,731,000 shares

Direct Holdings

244.58K

Indirect: 0

Net Shares Traded (QoQ)

no net change in Jun 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Quarter ending 30 Jun, 2026

Tetra Tech's three largest insider shareholders as of August 04, 2026 are Dan L Batrack (Chairman And Ceo, 332.50K shares), Leslie L Shoemaker (Evp, Chief Sustainability, 325.82K shares), Kimberly E Ritrievi (Director, 192.26K shares).

A detailed ownership breakdown for Tetra Tech is not available at this time.
Per Business Quant, insider holdings in TTEK make up 9.40% of the company, with 244.58K shares held against 260.14Mn outstanding.
Their holdings in Tetra Tech decreased 7.89%, from 265.52K shares to 244.58K shares over the prior quarter.
There were no significant purchases by Tetra Tech's insiders in the last 90 days.
Tetra Tech had no significant insider sales in the last 90 days.

Form 4 Holdings

Insiders Holding TTEK

Insiders 24

Shares held 1.65Mn

Of outstanding 0.628%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	Dan L Batrack	Chairman And Ceo	332,498	332,498	20.2%	02 Dec, 2025
2	Leslie L Shoemaker	Evp, Chief Sustainability	325,821	325,821	19.8%	02 Dec, 2025
3	Kimberly E Ritrievi	Director	192,259	192,259	11.7%	18 Mar, 2026
4	Steven M Burdick	Evp, Cfo	138,251	138,251	8.4%	06 Feb, 2026
5	Joanne M Maguire	Director	97,785	97,785	5.9%	02 Oct, 2024
6	William R Brownlie	Svp, Chief Engineer	85,376	85,376	5.2%	21 Mar, 2022
7	Preston Hopson	Evp, Chief Legal/Human Capital	83,142	83,142	5.0%	02 Dec, 2025
8	Kirsten M Volpi	Director	70,218	70,218	4.3%	12 Feb, 2026
9	J Christopher Lewis	Director	57,875	57,875	3.5%	16 Dec, 2022
10	Brian N Carter	Svp, Corporate Controller	46,496	46,496	2.8%	06 Feb, 2026
11	Roger R Argus	President	39,890	39,890	2.4%	02 Dec, 2025
12	Gary Birkenbeuel	Director	37,725	37,725	2.3%	15 Aug, 2025
13	Craig L Christensen	Svp, Cio	36,407	36,407	2.2%	30 Nov, 2021
14	Richard A Lemmon	Svp, Corporate Administration	35,775	35,775	2.2%	08 Dec, 2021
15	Prashant Gandhi	Director	16,553	16,553	1.0%	02 Dec, 2025
16	Bernard Teufele	Svp, Canada And South America	12,867	12,867	0.8%	24 Nov, 2021
17	Derek G Amidon	Svp, Comm./Int'L Svcs. Group	11,141	11,141	0.7%	22 Nov, 2022
18	J Kenneth Thompson	Director	10,985	10,985	0.7%	16 Feb, 2024
19	Christiana Obiaya	Director	9,666	9,666	0.6%	20 Feb, 2026
20	Patrick C Haden	Director	3,062	3,062	0.2%	21 Mar, 2022
21	Jill Hudkins	President	2,524	2,524	0.2%	28 Nov, 2023
22	Brendan M. O'Rourke	Svp, Enterprise Risk Mgmt.	1,344	1,344	0.1%	31 Jan, 2022
23	Mark A Rynning	Svp, Rs Infrastructure	1,164	1,164	0.1%	22 Nov, 2021
24	John M. Douglas	Director	610	610	0.0%	03 Mar, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

4,423 Insider Transactions

Source SEC Form 4

Latest quarter Jun 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	4,500	$0.00	$0	149,908	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	2,250	$0.00	$0	152,158	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	1,925	$0.00	$0	154,083	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	2,910	$0.00	$0	156,993	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	2,050	$0.00	$0	159,043	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	795	$0.00	$0	159,838	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	795	$0.00	$0	160,633	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	1,900	$0.00	$0	162,533	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	2,125	$0.00	$0	164,658	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired M	1,718	$0.00	$0	166,376	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Acquired A	25,883	$0.00	$0	192,259	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	4,500	$0.00	$0	0	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	2,250	$0.00	$0	2,250	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	1,925	$0.00	$0	1,925	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	2,910	$0.00	$0	0	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	2,050	$0.00	$0	0	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	795	$0.00	$0	0	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	795	$0.00	$0	0	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	1,900	$0.00	$0	0	Direct
16 Mar, 2026	Kimberly E Ritrievi	Director	Disposed M	2,125	$0.00	$0	0	Direct

Showing 1 to 20 of 4,423 transactions