Brian N. Carter, SVP and Corporate Controller at Tetra Tech Inc. ($TTEK), made one open market sale of common shares in the last 365 days, totaling $401 thousand. His most recent sale occurred on February 4, 2026. These activities rank 6,938th among 11,678 insiders in our database, well below the average sale amount of $8.6 million across 6.4 transactions. Carter reported no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 4, 2026 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | S | COMMON STOCK | 9979 | $40.23 | 46,496.0000 | 262,731,000 | 17.67% | 0.00% |
| Nov. 18, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 1265 | $0.00 | 51,484.0000 | 267,123,000 | 2.52% | 0.00% |
| Nov. 18, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 995 | $0.00 | 50,219.0000 | 267,123,000 | 2.02% | 0.00% |
| Nov. 30, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1228 | $0.00 | 3,681.0000 | 267,123,000 | 25.02% | 0.00% |
| Nov. 30, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1520 | $0.00 | 3,030.0000 | 267,123,000 | 33.41% | 0.00% |
| Nov. 19, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | A | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 5612 | $0.00 | 5,612.0000 | 267,123,000 | 9999.99% | 0.00% |
| Nov. 18, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1265 | $0.00 | 1,265.0000 | 267,123,000 | 50.00% | 0.00% |
| Nov. 18, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 995 | $0.00 | 0.0000 | 267,123,000 | 100.00% | 0.00% |
| Nov. 30, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | F | COMMON STOCK | 1500 | $34.74 | 56,475.0000 | 267,123,000 | 2.59% | 0.00% |
| Nov. 30, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 1228 | $0.00 | 57,975.0000 | 267,123,000 | 2.16% | 0.00% |
| Nov. 30, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 1520 | $0.00 | 56,747.0000 | 267,123,000 | 2.75% | 0.00% |
| Nov. 18, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | F | COMMON STOCK | 5977 | $35.69 | 55,227.0000 | 267,123,000 | 9.77% | 0.00% |
| Nov. 18, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | F | COMMON STOCK | 1234 | $35.69 | 50,250.0000 | 267,123,000 | 2.40% | 0.00% |
| Nov. 18, 2025 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | A | COMMON STOCK | 10954 | $0.00 | 61,204.0000 | 267,123,000 | 21.80% | 0.00% |
| Nov. 30, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 1520 | $0.00 | 50,052.0000 | 271,656,000 | 3.13% | 0.00% |
| Nov. 30, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | F | COMMON STOCK | 828 | $41.51 | 49,224.0000 | 271,656,000 | 1.65% | 0.00% |
| Nov. 30, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1520 | $0.00 | 4,550.0000 | 271,656,000 | 25.04% | 0.00% |
| Nov. 20, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | F | COMMON STOCK | 5982 | $40.22 | 48,532.0000 | 271,656,000 | 10.97% | 0.00% |
| Nov. 20, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | A | COMMON STOCK | 10984 | $0.00 | 54,514.0000 | 271,656,000 | 25.23% | 0.00% |
| Nov. 20, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | A | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 4909 | $0.00 | 4,909.0000 | 271,656,000 | 9999.99% | 0.00% |
| Nov. 18, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1535 | $0.00 | 0.0000 | 271,656,000 | 100.00% | 0.00% |
| Nov. 18, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 1270 | $0.00 | 45,600.0000 | 271,656,000 | 2.86% | 0.00% |
| Nov. 18, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 995 | $0.00 | 44,330.0000 | 271,656,000 | 2.30% | 0.00% |
| Nov. 18, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 1535 | $0.00 | 43,335.0000 | 271,656,000 | 3.67% | 0.00% |
| Nov. 18, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | F | COMMON STOCK | 2070 | $41.12 | 43,530.0000 | 271,656,000 | 4.54% | 0.00% |
| Nov. 18, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1270 | $0.00 | 2,530.0000 | 271,656,000 | 33.42% | 0.00% |
| Nov. 18, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 995 | $0.00 | 995.0000 | 271,656,000 | 50.00% | 0.00% |
| Feb. 9, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | STOCK OPTION (RIGHT TO BUY) | 5580 | $47.95 | 0.0000 | 268,690,000 | 100.00% | 0.00% |
| Feb. 9, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | M | COMMON STOCK | 5580 | $47.95 | 13,940.0000 | 268,690,000 | 66.75% | 0.00% |
| Feb. 9, 2024 | TETRA TECH INC | $TTEK | CARTER BRIAN N | SVP, Corporate Controller | S | COMMON STOCK | 5580 | $176.52 | 8,360.0000 | 268,690,000 | 40.03% | 0.00% |