Tetra Tech Inc (TTEK) Insider Ownership

Historic Insider Ownership Trends

Tetra Tech's top three insider shareholders as of June 06, 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).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
J Christopher Lewis - 57,875 0 16 Dec, 2022
Patrick C Haden - 3,062 0 21 Mar, 2022
Richard A Lemmon Svp, Corporate Administration 35,775 0 08 Dec, 2021
J Kenneth Thompson - 10,985 0 16 Feb, 2024
Craig L Christensen Svp, Cio 36,407 0 30 Nov, 2021
Dan L Batrack Chairman And Ceo 332,498 0 02 Dec, 2025
Steven M Burdick Evp, Cfo 138,251 0 06 Feb, 2026
William R Brownlie Svp, Chief Engineer 85,376 0 21 Mar, 2022
Joanne M Maguire - 97,785 0 02 Oct, 2024
Leslie L Shoemaker Evp, Chief Sustainability 325,821 0 02 Dec, 2025
Brian N Carter Svp, Corporate Controller 46,496 0 06 Feb, 2026
Kirsten M Volpi - 70,218 0 12 Feb, 2026
Kimberly E Ritrievi - 192,259 0 18 Mar, 2026
Roger R Argus President 39,890 0 02 Dec, 2025
Derek G Amidon Svp, Comm./Int'L Svcs. Group 11,141 0 22 Nov, 2022
Mark A Rynning Svp, Rs Infrastructure 1,164 0 22 Nov, 2021
Bernard Teufele Svp, Canada And South America 12,867 0 24 Nov, 2021
Preston Hopson Evp, Chief Legal/Human Capital 83,142 0 02 Dec, 2025
Gary Birkenbeuel - 37,725 0 15 Aug, 2025
Brendan M. O'Rourke Svp, Enterprise Risk Mgmt. 1,344 0 31 Jan, 2022
Christiana Obiaya - 9,666 0 20 Feb, 2026
Prashant Gandhi - 16,553 0 02 Dec, 2025
Jill Hudkins President 2,524 0 28 Nov, 2023
John M. Douglas - 610 0 03 Mar, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 4,500 $0.00 149,908 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 2,250 $0.00 152,158 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 1,925 $0.00 154,083 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 2,910 $0.00 156,993 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 2,050 $0.00 159,043 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 795 $0.00 159,838 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 795 $0.00 160,633 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 1,900 $0.00 162,533 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 2,125 $0.00 164,658 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 1,718 $0.00 166,376 D M
16 Mar, 2026 Kimberly E Ritrievi COMMON STOCK A 25,883 $0.00 192,259 D A
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 4,500 $0.00 0 D M
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 2,250 $0.00 2,250 D M
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 1,925 $0.00 1,925 D M
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 2,910 $0.00 0 D M
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 2,050 $0.00 0 D M
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 795 $0.00 0 D M
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 795 $0.00 0 D M
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 1,900 $0.00 0 D M
16 Mar, 2026 Kimberly E Ritrievi RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) D 2,125 $0.00 0 D M