Data spanning the past 90 days through January 10, 2026 reveals that Tetra Tech's three principal insider shareholders consist of Svp And Chief Engineer William R Brownlie (426.88K shares), Chairman And Ceo Dan L Batrack (332.50K shares), Evp And Chief Sustainability Leslie L Shoemaker (325.82K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Dan L Batrack | Chairman And Ceo | 332,498 | 02 Dec, 2025 |
| Leslie L Shoemaker | Evp And Chief Sustainability | 325,821 | 02 Dec, 2025 |
| Steven M Burdick | Evp And Cfo | 149,219 | 02 Dec, 2025 |
| Kimberly E Ritrievi | 145,590 | 22 Nov, 2024 | |
| Joanne M Maguire | 97,785 | 02 Oct, 2024 | |
| William R Brownlie | Svp And Chief Engineer | 426,880 | 21 Mar, 2022 |
| Preston Hopson | Evp And Chief Legal/Human Capital | 83,142 | 02 Dec, 2025 |
| Kirsten M Volpi | 69,218 | 02 Dec, 2025 | |
| J Christopher Lewis | 289,375 | 16 Dec, 2022 | |
| Brian N Carter | Svp And Corporate Controller | 56,475 | 02 Dec, 2025 |
| Roger R Argus | President | 39,890 | 02 Dec, 2025 |
| Gary Birkenbeuel | 37,725 | 15 Aug, 2025 | |
| Craig L Christensen | Svp And Cio | 182,035 | 30 Nov, 2021 |
| Richard A Lemmon | Svp And Corporate Administration | 178,875 | 08 Dec, 2021 |
| Prashant Gandhi | 16,553 | 02 Dec, 2025 | |
| Bernard Teufele | Svp And Canada And South America | 64,335 | 24 Nov, 2021 |
| Derek G Amidon | Svp And Comm./Int'L Svcs. Group | 55,705 | 22 Nov, 2022 |
| J Kenneth Thompson | 54,925 | 16 Feb, 2024 | |
| Christiana Obiaya | 9,171 | 02 Dec, 2025 | |
| Patrick C Haden | 15,310 | 21 Mar, 2022 | |
| Jill Hudkins | President | 12,620 | 28 Nov, 2023 |
| Brendan M. O'Rourke | Svp And Enterprise Risk Mgmt. | 6,720 | 31 Jan, 2022 |
| Mark A Rynning | Svp And R&S Infrastructure | 5,820 | 22 Nov, 2021 |
| John M. Douglas | 610 | 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.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 18 Nov, 2031 | Dan L Batrack | COMMON STOCK | D | 15,000 | $28.76 | 159,029 | D | S |
| 18 Nov, 2031 | Dan L Batrack | - | - | 159,029 | D | |||
| 30 Nov, 2025 | Dan L Batrack | COMMON STOCK | D | 22,396 | $34.74 | 332,498 | D | F |
| 30 Nov, 2025 | Dan L Batrack | COMMON STOCK | A | 19,330 | $0.00 | 354,894 | D | M |
| 30 Nov, 2025 | Dan L Batrack | COMMON STOCK | A | 21,255 | $0.00 | 335,564 | D | M |
| 30 Nov, 2025 | Steven M Burdick | COMMON STOCK | D | 4,044 | $34.74 | 149,219 | D | F |
| 30 Nov, 2025 | Steven M Burdick | COMMON STOCK | A | 3,645 | $0.00 | 149,581 | D | M |
| 30 Nov, 2025 | Steven M Burdick | COMMON STOCK | A | 3,682 | $0.00 | 153,263 | D | M |
| 30 Nov, 2025 | Leslie L Shoemaker | COMMON STOCK | A | 3,682 | $0.00 | 329,528 | D | M |
| 30 Nov, 2025 | Leslie L Shoemaker | COMMON STOCK | D | 3,707 | $34.74 | 325,821 | D | F |
| 30 Nov, 2025 | Leslie L Shoemaker | COMMON STOCK | A | 3,035 | $0.00 | 325,846 | D | M |
| 30 Nov, 2025 | Brian N Carter | COMMON STOCK | A | 1,520 | $0.00 | 56,747 | D | M |
| 30 Nov, 2025 | Brian N Carter | COMMON STOCK | D | 1,500 | $34.74 | 56,475 | D | F |
| 30 Nov, 2025 | Brian N Carter | COMMON STOCK | A | 1,228 | $0.00 | 57,975 | D | M |
| 30 Nov, 2025 | Kirsten M Volpi | COMMON STOCK | A | 1,718 | $0.00 | 68,218 | D | M |
| 30 Nov, 2025 | Roger R Argus | COMMON STOCK | D | 2,865 | $34.74 | 39,890 | D | F |
| 30 Nov, 2025 | Roger R Argus | COMMON STOCK | A | 2,735 | $0.00 | 40,300 | D | M |
| 30 Nov, 2025 | Roger R Argus | COMMON STOCK | A | 2,455 | $0.00 | 42,755 | D | M |
| 30 Nov, 2025 | Preston Hopson | COMMON STOCK | D | 2,044 | $34.74 | 83,142 | D | F |
| 30 Nov, 2025 | Preston Hopson | COMMON STOCK | A | 2,735 | $0.00 | 82,731 | D | M |