Teradyne, Inc. insider Gregory Stephen Smith reported a change in beneficial ownership of the company’s common stock following a transaction on July 15, 2026. The Form 4, filed July 16, 2026, reports a sale of 4,000 shares of Teradyne common stock at a price of $356.31 per share, representing gross proceeds of approximately $1.43 million. The filing notes that the transaction was carried out under a prearranged trading plan adopted by Smith on February 12, 2026. The plan was intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934, which allows corporate insiders to schedule trades in advance under specified conditions, helping address concerns about trading on material nonpublic information. The document also includes an explanatory ownership note stating that Smith’s reported holdings include 25.8346 shares acquired on June 30, 2026, through Teradyne’s Employee Stock Purchase Plan. The excerpt does not specify Smith’s beneficial ownership total after the sale, nor does it describe any option exercise, restricted stock vesting, derivative securities transaction, or vesting schedule. The filing was signed on Smith’s behalf by Ryan E. Driscoll as attorney-in-fact on July 16, 2026.