Gary Birkenbeuel is Director at TETRA TECH INC (TTEK). They have made 1 open-market trade across 1 company since 2025, most recently 2026-01-12.
CIK 0001748476
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TTEK | 46,635 | $1.6M |
Shares reported on the most recent Form 4, priced at the 2026-01-14 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TTEK | SELL | 2025-08-14 | 2025-08-15 | $36.00 | $86K | +3.0% | +1.0% | +4.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.