X0303 4 2010-02-03 0 0000855658 LATTICE SEMICONDUCTOR CORP LSCC 0001465588 Fanning Christopher M 5555 N.E. MOORE CT. HILLSBORO OR 97124 0 1 0 0 Corporate VP & GM, LD & MSS Common Stock 2010-02-03 4 M 0 6220 0 A 28139 D Common Stock 2010-02-03 4 F 0 2590 2.72 D 25549 D Common Stock 2010-02-05 4 M 0 628 0 A 26177 D Common Stock 2010-02-05 4 F 0 261 2.49 D 25916 D Restricted Stock Unit (RSU) 0 2010-02-05 4 M 0 628 0 D 2012-02-06 Common Stock 628 5025 D Restricted Stock Unit (RSU) 0 2010-02-03 4 M 0 6220 0 D 2013-02-04 Common Stock 6220 18658 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 amoun retained by the Issuer was not in excess of the amount of the tax liability. Each Restricted Stock Unit (RSU) represents a right to receive one share of the Issuers common shares without payment of specific consideration. A total of 10,049 Restricted Stock Units (RSUs) were granted on 2/5/08 that vest over a four year period wherein 1/16th (6.25%) of the total RSUs granted vest on each quarterly anniversary of the grant date. As of 6/1/09, the effective date the reporting individual became subject to Section 16, a total of 3,140 RSUs have vest and the shares have been released to the reporting individual (less any shares withheld to satisfy the tax withholding obligation). The remaining 6,909 RSUs shall continue to vest quarterly until fully vested on 2/5/2012. 24,878 Restricted Stock Units (RSUs) were granted on 2/3/09 and vest, in whole shares as follows: 25% of the RSU grant shall vest on 2/3/10, and an additional 6.25% of the RSUs vest on each three months thereafter until 100% of the RSU grant is vested on 2/3/2013. By: Byron W. Milstead, Attorney-in-Fact For: /s/ Christopher Fanning 2010-02-05