Teradyne

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-25 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: TERADYNE, INC (TER) CIK: 0000097210 --- Reporting Owner --- Name: MADDOCK ERNEST E CIK: 0001227050 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-09-25 | Code: J (Other acquisition/disposition) Shares: +2 | Price: $0.00 Shares Owned After: 10,269 | Ownership: D (Direct) Footnotes: [F1] Represents deferred stock units ("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 l 6b-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. [F1] Represents deferred stock units ("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 l 6b-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. [F1] Represents deferred stock units ("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 l 6b-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 deferred stock units ("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 l 6b-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)