X0306 4 2021-09-04 0 0000855658 LATTICE SEMICONDUCTOR CORP LSCC 0001752584 Douglass Stephen 5555 NE MOORE COURT HILLSBORO OR 97124 0 1 0 0 VP Corp, R&D Common Stock 2021-09-04 4 M 0 8076 0.0 A 87621 D Common Stock 2021-09-04 4 S 0 4005 63.07 D 83616 D Common Stock 2021-09-04 4 M 0 61538 0.0 A 145154 D Common Stock 2021-09-04 4 S 0 30511 63.07 D 114643 D Common Stock 2021-09-07 4 S 0 2495 63.6057 D 112148 D Common Stock 2021-09-08 4 S 0 15514 62.4334 D 96634 D Performance Restricted Stock Unit (PRSU) 0.0 2021-09-04 4 M 0 61538 0.0 D 2024-02-19 Common Stock 61538 54846 D Restricted Stock Unit (RSU) 0.0 2021-09-04 4 M 0 8076 0.0 D 2022-02-19 Common Stock 8076 128393 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. The transaction indicated was conducted under an approved 10b5-1 Plan. The price indicated is the weighted average sale price for the shares sold. The individual sale prices for the shares indicated range from $63.33 to $63.90. The price indicated is the weighted average sale price for the shares sold. The individual sale prices for the shares indicated range from $61.95 to $63.29. Each Restricted Stock Unit (RSU) represents a right to receive one share of the Issuers common shares without payment of specific consideration. Grants of Performance Restricted Stock Units vest as follows: one-third on each of 9/30/19, 9/30/2020 and 9/30/2021 upon achievement of the performance conditions. Not applicable. By: Byron W. Milstead, Attorney in Fact For: Stephen Mark Douglass 2021-09-08