X0304 4 2012-01-27 0000097210 TERADYNE, INC TER 0001198621 BRADLEY MICHAEL A TERADYNE, INC. 600 RIVERPARK DRIVE NORTH READING MA 01864 1 1 CEO and President Common Stock 2012-01-29 4 M 0 30514 16.51 A 280337 D Common Stock 2012-01-28 4 M 0 25632 16.51 A 305969 D Common Stock 2012-01-28 4 M 0 12816 16.51 A 318785 D Common Stock 2012-01-29 4 M 0 20343 16.51 A 339128 D Common Stock 2012-01-30 4 M 0 46250 16.51 A 385378 D Restricted Stock Units 0 2012-01-29 4 M 0 30514 0 D Common Stock 30514 61028 D Restricted Stock Units 0 2012-01-28 4 M 0 25632 0 D Common Stock 25632 76896 D Restricted Stock Units 0 2012-01-28 4 M 0 12816 0 D Common Stock 12816 38448 D Restricted Stock Units 0 2012-01-29 4 M 0 20343 0 D Common Stock 20343 40686 D Restricted Stock Units 0 2012-01-30 4 M 0 46250 0 D Common Stock 46250 46250 D Non-qualified Stock Option (Right to Buy) 16.95 2012-01-27 4 A 0 64650 0 A 2013-01-27 2019-01-27 Common Stock 64650 64650 D Restricted Stock Units 0 2012-01-27 4 A 0 52254 0 A Common Stock 52254 52254 D Indicates conversion upon vesting of 25% of the performance-based Restricted Stock Units (RSU's) granted on January 29, 2010. The remaining portion will vest in two equal installments annually on the anniversary of the grant. Indicates conversion upon vesting of 25% of the performance-based Restricted Stock Units (RSU's) granted on January 28, 2011. The remaining portion will vest in three equal installments annually on the anniversary of the grant. Indicates conversion upon vesting of 25% of the time-based Restricted Stock Units (RSU's) granted on January 28, 2011. The remaining portion will vest in three equal installments annually on the anniversary of the grant. Indicates conversion upon vesting of 25% of the time-based Restricted Stock Units (RSU's) granted on January 29, 2010. The remaining portion will vest in two equal installments annually on the anniversary of the grant. Indicates conversion upon vesting of 25% of the time-based Restricted Stock Units (RSU's) granted on January 30, 2009. The remaining portion of the time-based RSU's will vest on January 30, 2013. This option is granted under Teradyne's 2006 Equity and Cash Compensation Incentive Plan, and is exerciseable at the rate of 25% per year, commencing on the date of the first anniversary of the grant, January 27, 2013. Each RSU represents the right to receive one share of Teradyne, Inc. common stock. These RSU's were issued under Teradyne's 2006 Equity and Cash Compensation Incentive Plan, are time-based, and will vest in four equal installments beginning on January 27, 2013. /s/ Ryan E. Driscoll, Deputy General Counsel, by power of attorney 2012-01-31