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: Henry Andrew Chisholm CIK: 0002075301 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-09-24 | Code: A (Grant or award) Shares: +64 | Price: $0.00 Shares Owned After: 2,991 | 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. --- 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. --- Signature --- /s/ /s/ Ryan E. Driscoll, Attorney-in-Fact (2026-09-28)