Teradyne shareholders elect all eight director nominees and approve executive compensation

4. To ratify the selection of the firm of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2023. The proposal was approved by a vote of stockholders as follows: Votes For Votes Against Votes Abstained 135,422,584 6,150,000 349,709

3. To conduct an advisory vote on the frequency of the stockholder advisory vote on the compensation of the Company’s named executive officers. The option of holding the advisory vote on the compensation of the Company’s named executive officers every year was approved on an advisory basis by a vote of the stockholders as follows: One Year Two Years Three Years Votes Abstained Broker Non-Votes 130,206,082 45,772 1,560,041 134,276 9,976,122 Consistent with the stated preference of a majority of the Company’s stockholders, the Board of Directors determined that it will hold an annual advisory vote on the compensation of the Company’s named executive officers until the next required vote on the frequency of stockholder votes on compensation of named executive officers, which will occur no later than the Company’s annual meeting of stockholders in 2029.

1. To elect the eight nominees named in the Company’s proxy statement filed with the Commission on March 31, 2023, to the Board of Directors to serve as directors for a one-year term. Each nominee for director was elected by a vote of the stockholders as follows: Nominee Votes For Votes Against Votes Abstained Broker Non-Votes Timothy E. Guertin 121,157,548 10,711,362 77,261 9,976,122 Peter Herweck 125,818,204 6,051,780 76,187 9,976,122 Mercedes Johnson 129,596,390 2,274,067 75,714 9,976,122 Ernest E. Maddock 129,557,450 2,311,282 77,439 9,976,122 Marilyn Matz 109,796,176 22,074,809 75,186 9,976,122 Gregory S. Smith 131,425,261 447,629 73,281 9,976,122 Fouad “Ford” Tamer 131,208,808 658,974 78,389 9,976,122 Paul J. Tufano 124,972,953 6,697,427 275,791 9,976,122

2. To approve, in a non-binding, advisory vote, the compensation of the Company’s named executive officers. The compensation of the Company’s named executive officers was approved on an advisory basis by a vote of stockholders as follows: Votes For Votes Against Votes Abstained Broker Non-Votes 117,955,367 13,794,451 196,353 9,976,122