X0306 4 2021-02-17 0 0000021535 COHU INC COHU 0001222030 DONAHUE JAMES A 12367 CROSTHWAITE CIRCLE POWAY CA 92064 1 0 0 0 Common Stock 2021-02-17 4 M 0 20000 10.58 A 387056 D Common Stock 2021-02-17 4 S 0 20000 47.88 D 367056 D Common Stock 2021-02-18 4 M 0 20000 10.58 A 387056 D Common Stock 2021-02-18 4 S 0 20000 46.68 D 367056 D Employee Stock Option (right to buy) 10.58 2021-02-17 4 M 0 20000 0.00 D 2013-03-06 2022-03-06 Common Stock 20000 67323 D Employee Stock Option (right to buy) 10.58 2021-02-18 4 M 0 20000 0.00 D 2013-03-06 2022-03-06 Common Stock 20000 47323 D This transaction was made pursuant to a Rule 10(b)5-1 trading plan adopted by Mr. Donahue on November 20, 2020 (the "Plan"). Mr. Donahue holds various stock options that are expiring in 2022 and 2023 and wished to put the Plan in place to facilitate the orderly exercise of such options before their expiration. The shares with respect to this transaction were sold in multiple trades at prices ranging from $46.95 to $48.76; the price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The shares with respect to this transaction were sold in multiple trades at prices ranging from $45.89 to $48.22; the price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Number of shares includes 8,532 Restricted Stock Units (RSUs) that in the future will be converted on a one-for-one basis into shares of Cohu, Inc. Common Stock immediately upon the vest dates (assuming continued service to the Board of Directors). The options vested fully on March 06, 2016. Jeffrey D. Jones, by Power of Attorney 2021-02-19