0001959173-23-002683 144 1 20230728 20230728 TERADYNE, INC 0000097210 3825 042272148 MA 1231 144 33 001-06462 231122749 600 RIVERPARK DRIVE NORTH READING MA 01864 978-370-2700 600 RIVERPARK DRIVE NORTH READING MA 01864 TERADYNE INC 19920703 Vahey Walter G. 0001553425 144 2 WARE ROAD WINCHESTER MA 01890 144 1 primary_doc.xml UNITED STATES Form 144 Filer Information SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933 144: Issuer Information Name of Issuer TERADYNE, INC SEC File Number 001-06462 Address of Issuer 600 RIVERPARK DRIVE NORTH READING MASSACHUSETTS 01864 Phone 978-370-2700 Name of Person for Whose Account the Vahey Walter G. Securities are To Be Sold See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice. Relationship to Issuer 1. Officer 144: Securities Information Title of the Number of Number of Class of Name and Shares or Aggregate Shares or Approximate Name the Record Securities To Address of the Other Market Other Units Date of Securities Be Sold Broker Units To Value Outstanding Sale Exchange Be Sold Fidelity Brokerage Services LLC #1 Common 900 Salem 1,789 $198,221.20 155,038,743 07/28/2023 NASDAQ Street Smithfield RHODE ISLAND 02917 144: Securities To Be Sold Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor: Nature of Name of Is Date Amount of Record Title of Date you Acquisition Person from this Donor Securities Date of Payment Nature of the Class Acquired Transaction Whom a Acquired Acquired Payment * Acquired Gift? Options #1 Common 07/28/2023 Granted Issuer ? — 1,789 07/28/2023 Cash 01-27-2017 * If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid. 144: Securities Sold During The Past 3 Months Nothing to Report ? 144: Remarks and Signature Remarks Date of Notice 07/28/2023 ATTENTION: The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date. /s/ Jennifer Ruchti, as a duly authorized Signature representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Walter G. Vahey ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)