| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Birkenbeuel Gary | Director | 3475 EAST FOOTHILL BLVD., PASADENA | /s/ Preston Hopson, Attorney-in-fact for Gary Birkenbeuel | 2025-12-02 | 0001748476 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | TTEK | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | Award | $0 | +1.96K | $0.00 | 1.96K | Nov 19, 2025 | COMMON STOCK | 1.96K | Direct | F1, F2, F3 |
| Id | Content |
|---|---|
| F1 | Represents an award of restricted stock units (RSUs), each unit of which represents a contingent right to receive one share of Tetra Tech common stock. |
| F2 | The RSUs become 100% vested as to the shares underlying the RSUs on November 30, 2026. |
| F3 | The RSUs are exercisable at the time of vesting and do not have a set expiration date. |