M. Volpi Kirsten's most recent trade in Tetra Tech, Inc. was a trade of 1,964 RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) done . Disclosure was reported to the exchange on Nov. 19, 2025.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Tetra Tech Inc | Kirsten M. Volpi | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 19 Nov 2025 | 1,964 | 1,964 | - | - | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 19 Nov 2025 | 1,718 | 68,218 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 19 Nov 2025 | 1,718 | 0 | - | - | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 9.59 per share. | 19 Nov 2025 | 1,000 | 69,218 (0%) | 0% | 9.6 | 9,590 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 19 Nov 2025 | 1,000 | 9,000 | - | - | STOCK OPTION (RIGHT TO BUY) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 18 Nov 2025 | 4,104 | 66,500 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 9.59 per share. | 04 Feb 2025 | 6,000 | 66,196 (0%) | 0% | 9.6 | 57,540 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 04 Feb 2025 | 6,000 | 10,000 | - | - | STOCK OPTION (RIGHT TO BUY) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 34.31 per share. | 04 Feb 2025 | 4,345 | 60,196 (0%) | 0% | 34.3 | 149,077 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 34.33 per share. | 04 Feb 2025 | 4,100 | 64,541 (0%) | 0% | 34.3 | 140,737 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 04 Feb 2025 | 3,800 | 62,396 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 34.41 per share. | 04 Feb 2025 | 1,671 | 68,641 (0%) | 0% | 34.4 | 57,499 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 30 Nov 2024 | 2,125 | 70,312 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 30 Nov 2024 | 2,125 | 0 | - | - | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 20 Nov 2024 | 4,397 | 68,187 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 20 Nov 2024 | 1,718 | 1,718 | - | - | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 46.00 per share. | 10 Sep 2024 | 1,950 | 63,790 (0%) | 0% | 46 | 89,700 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 12 Aug 2024 | 300 | 3,200 | - | - | STOCK OPTION (RIGHT TO BUY) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 47.95 per share. | 12 Aug 2024 | 300 | 13,148 (0%) | 0% | 48.0 | 14,385 | COMMON STOCK |
| Tetra Tech Inc | M. Volpi Kirsten | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 47.95 per share. | 06 Feb 2024 | 500 | 12,848 (0%) | 0% | 48.0 | 23,975 | COMMON STOCK |
| Tetra Tech Inc | Volpi M. Kirsten | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 06 Feb 2024 | 500 | 3,500 | - | - | STOCK OPTION (RIGHT TO BUY) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 162.74 per share. | 01 Dec 2023 | 2,228 | 13,014 (0%) | 0% | 162.7 | 362,590 | COMMON STOCK |
| Tetra Tech Inc | Kirsten Volpi M. | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 01 Dec 2023 | 666 | 12,348 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 40.80 per share. | 27 Feb 2023 | 825 | 12,388 (0%) | 0% | 40.8 | 33,660 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 27 Feb 2023 | 825 | 2,000 | - | - | STOCK OPTION | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Payment of exercise price or tax liability using portion of securities received from the company at price $ 135.96 per share. | 27 Feb 2023 | 221 | 12,167 (0%) | 0% | 136.0 | 30,047 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 145.74 per share. | 16 Feb 2023 | 900 | 11,563 (0%) | 0% | 145.7 | 131,167 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 13 Dec 2022 | 70 | 12,463 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 154.61 per share. | 06 Dec 2022 | 700 | 12,603 (0%) | 0% | 154.6 | 108,225 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 06 Dec 2022 | 70 | 12,533 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 18 Nov 2022 | 1,710 | 12,985 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 18 Nov 2022 | 318 | 0 | - | - | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 18 Nov 2022 | 318 | 13,303 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 144.66 per share. | 19 Aug 2022 | 1,200 | 11,275 (0%) | 0% | 144.7 | 173,594 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 135.41 per share. | 01 Jun 2022 | 550 | 12,475 (0%) | 0% | 135.4 | 74,477 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 18 Mar 2022 | 610 | 13,025 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 07 Dec 2021 | 978 | 15,289 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 189.62 per share. | 07 Dec 2021 | 700 | 14,589 (0%) | 0% | 189.6 | 132,732 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 23 Nov 2021 | 2,310 | 16,267 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 23 Nov 2021 | 318 | 318 | - | - | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 18 Nov 2021 | 410 | 13,957 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 18 Nov 2021 | 410 | 0 | - | - | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 02 Aug 2021 | 450 | 13,547 (0%) | 0% | 0 | COMMON STOCK | |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Sale of securities on an exchange or to another person at price $ 119.15 per share. | 07 Jun 2021 | 5,575 | 13,997 (0%) | 0% | 119.1 | 664,261 | COMMON STOCK |
| Tetra Tech Inc | Kirsten M. Volpi | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 03 Feb 2021 | 40 | 19,572 (0%) | 0% | 0 | COMMON STOCK |