X0306 4 2020-01-24 0000097210 TERADYNE, INC TER 0001666934 Smith Gregory Stephen TERADYNE, INC. 600 RIVERPARK DRIVE NORTH READING MA 01864 0 1 0 0 President, Semiconductor Test Common Stock 2020-01-24 4 A 0 3953 0 A 45675 D Non-qualified Stock Option (Right to Buy) 72.10 2020-01-24 4 A 0 4597 0 A 2027-01-24 Common Stock 4597 4597 D Represents restricted stock units ("RSUs") granted to the Reporting Person under the Issuer's 2006 Equity and Cash Compensation Incentive Plan. Each RSU represents the right to receive one share of Common Stock. The RSUs will vest in four equal annual installments beginning on January 24, 2021. Includes (i) 2,445 RSUs granted on January 29, 2016 previously reported by the Reporting Person in Table II that vest on January 29, 2020; (ii) 4,708 RSUs granted on January 27, 2017 previously reported by the Reporting Person in Table II that vest in two equal installments on January 27, 2020 and January 27, 2021; (iii) 5,074 RSUs granted on January 26, 2018 previously reported by the Reporting Person in Table II that vest in three equal installments on January 26, 2020, January 26, 2021 and January 26, 2022; and (iv) 9,252 RSUs granted on January 25, 2019 previously reported by the Reporting Person in Table II that vest in four equal annual installments on January 25, 2020, January 25, 2021, January 25, 2022 and January 25, 2023. Includes 443 shares acquired under the Issuer's Employee Stock Purchase Plan on June 28, 2019 and December 31, 2019. This option vests 25% per year over four years beginning on January 24, 2021, the first anniversary of the grant. /s/ Ryan E. Driscoll, Attorney-in-Fact 2020-01-27