X0306 4 2020-01-02 0 0000855658 LATTICE SEMICONDUCTOR CORP LSCC 0001764515 Luther Sherri R 111 SW 5TH AVE., 7TH FL. PORTLAND OR 97204 0 1 0 0 VP Corp, CFO Common Stock 2020-01-02 4 M 0 35296 0.0 A 35296 D Common Stock 2020-01-02 4 F 0 12571 19.43 D 22725 D Restricted Stock Units - no purchase price for this transaction. These shares were retained by the Issuer in order to meet the tax withholding obligations of the Reporting Person in connection with the vesting of an installment of the restricted stock units. The amount retained by the Issuer was not in excess of the amount of the tax liability. By: Byron W. Milstead, Attorney-in-Fact For: Sherri Luther 2020-01-03