SEC Insider Transactions from Birkenbeuel Gary.

Last updated: 2026-03-14 11:44 UTC | Total transactions: 12

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.

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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%