X0303 4 2010-04-26 0000097210 TERADYNE, INC TER 0001198621 BRADLEY MICHAEL A TERADYNE, INC. 600 RIVERPARK DRIVE NORTH READING MA 01864 1 1 0 0 CEO and President Common Stock 2010-04-26 4 M 0 115000 11.66 A 384918 D Common Stock 2010-04-26 4 S 0 115000 13.10 D 269918 D Non-Qualified Stock Option (Right to Buy) 11.66 2010-04-26 4 M 0 115000 0 D 2003-04-28 2010-04-28 Common Stock 115000 0 D The reported price is based on a weighted average of multiple same-day transactions with prices ranging from $13.06 to $13.17 per share. Full information regarding the number of shares sold at each separate price is available to the Securities and Exchange Commission staff, the Issuer or any security holder of the Issuer upon request. This option is granted under Teradyne's 1991 Employee Stock Option Plan and is exercisable at the rate of 20% on April 28, 2003 and 20% per year thereafter commencing on April 28, 2004. \s\ Ryan Driscoll, Deputy General Counsel, by power of attorney 2010-04-28