Teradyne

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-24 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: TERADYNE, INC (TER) CIK: 0000097210 --- Reporting Owner --- Name: TUFANO PAUL J CIK: 0001201520 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-09-24 | Code: A (Grant or award) Shares: +141 | Price: $0.00 Shares Owned After: 65,989 | Ownership: D (Direct) Footnotes: [F1] Represents the Reporting Person's deferral of his quarterly cash compensation into deferred stock units ("DSUs"). The number of DSUs is calculated based on the closing price of the Common Stock on their date of issuance. DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity. [F1] Represents the Reporting Person's deferral of his quarterly cash compensation into deferred stock units ("DSUs"). The number of DSUs is calculated based on the closing price of the Common Stock on their date of issuance. DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity. [Transaction #2] Security: Common Stock Date: 2026-09-25 | Code: J (Other acquisition/disposition) Shares: +19 | Price: $0.00 Shares Owned After: 66,008 | Ownership: D (Direct) Footnotes: [F2] Represents DSUs issued to the Reporting Person in accordance with his election to receive dividends paid on DSUs in the form of additional DSUs in lieu of cash. Such acquisition is exempt under Exchange Act Rule 16b-3(d). DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity. [F2] Represents DSUs issued to the Reporting Person in accordance with his election to receive dividends paid on DSUs in the form of additional DSUs in lieu of cash. Such acquisition is exempt under Exchange Act Rule 16b-3(d). DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity. [F2] Represents DSUs issued to the Reporting Person in accordance with his election to receive dividends paid on DSUs in the form of additional DSUs in lieu of cash. Such acquisition is exempt under Exchange Act Rule 16b-3(d). DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity. --- Footnotes (Complete Index) --- F1: Represents the Reporting Person's deferral of his quarterly cash compensation into deferred stock units ("DSUs"). The number of DSUs is calculated based on the closing price of the Common Stock on their date of issuance. DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity. F2: Represents DSUs issued to the Reporting Person in accordance with his election to receive dividends paid on DSUs in the form of additional DSUs in lieu of cash. Such acquisition is exempt under Exchange Act Rule 16b-3(d). DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity. --- Signature --- /s/ /s/ Ryan E. Driscoll, Attorney-in-Fact (2026-09-28)