| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Smith Gregory Stephen | President and CEO, Director | TERADYNE, INC., 600 RIVERPARK DRIVE, NORTH READING | /s/ Ryan E. Driscoll, Attorney-in-Fact | 29 Jan 2026 | 0001666934 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | TER | Common Stock | Award | $0 | +59,475 | +64% | $0.000000 | 152,949 | 27 Jan 2026 | Direct | F1, F2 |
| transaction | TER | Common Stock | Tax liability | $7,313,953 | -30,610 | -20% | $238.94 | 122,339 | 27 Jan 2026 | Direct | F3 |
| transaction | TER | Common Stock | Tax liability | $121,733 | -486 | -0.4% | $250.48 | 121,853 | 28 Jan 2026 | Direct | F4 |
| Id | Content |
|---|---|
| F1 | Represents performance-based restricted stock units ("PRSUs") granted to the Reporting Person under the Issuer's 2006 Equity and Cash Compensation Incentive Plan on January 27, 2023. Each PRSU represents the right to receive one share of Common Stock. The number of PRSUs was determined and vested in full on January 27, 2026. |
| F2 | Includes 64.5779 shares acquired under the Issuer's Employee Stock Purchase Plan on December 31, 2025. |
| F3 | Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units ("RSUs") and PRSUs on January 27, 2026. |
| F4 | Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of RSUs on January 28, 2026. |