Gary Birkenbeuel, a director at Tetra Tech Inc. ($TTEK), made one open market sale of common shares in the last year, totaling $86,050. His most recent sale occurred on August 14, 2025. This activity ranks 9,782nd among 11,678 individual insiders, well below the average sale amount of $8.6 million across 6.37 transactions. Birkenbeuel Gary recorded no open market purchases in the period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 12, 2026 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1590 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| Jan. 1, 2025 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | A | COMMON STOCK | 5270 | $0.00 | 42,995.0000 | 271,886,000 | 13.97% | 0.00% |
| Jan. 1, 2025 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | M | COMMON STOCK | 2050 | $0.00 | 45,045.0000 | 271,886,000 | 4.77% | 0.00% |
| Jan. 12, 2026 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | M | COMMON STOCK | 1590 | $0.00 | 46,635.0000 | 262,731,000 | 3.53% | 0.00% |
| Jan. 12, 2026 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | A | COMMON STOCK | 4397 | $0.00 | 51,032.0000 | 262,731,000 | 9.43% | 0.00% |
| Jan. 1, 2025 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 2050 | $0.00 | 0.0000 | 271,886,000 | 100.00% | 0.00% |
| Nov. 19, 2025 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | A | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1964 | $0.00 | 1,964.0000 | 267,123,000 | 9999.99% | 0.00% |
| Aug. 14, 2025 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | S | COMMON STOCK | 2390 | $36.00 | 37,725.0000 | 268,113,000 | 5.96% | 0.00% |
| Nov. 20, 2024 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | A | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1718 | $0.00 | 1,718.0000 | 271,656,000 | 9999.99% | 0.00% |
| Aug. 20, 2024 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | M | COMMON STOCK | 243 | $59.90 | 7,780.0000 | 270,260,000 | 3.22% | 0.00% |
| Aug. 20, 2024 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | M | COMMON STOCK | 243 | $59.90 | 8,023.0000 | 270,260,000 | 3.12% | 0.00% |
| Aug. 20, 2024 | TETRA TECH INC | $TTEK | Birkenbeuel Gary | Director | M | STOCK OPTION (RIGHT TO BUY) | 243 | $0.00 | 0.0000 | 270,260,000 | 100.00% | 0.00% |