X0508 4 2024-12-11 0000855658 LATTICE SEMICONDUCTOR CORP LSCC 0001992449 Desale Pravin 5555 NE MOORE COURT HILLSBORO OR 97124 1 SVP, R&D 1 Common Stock 2024-12-11 4 M 0 1705 0 A 2070 D Common Stock 2024-12-11 4 F 0 609 63.005 D 1461 D Common Stock 2024-12-12 4 S 0 1096 62.5393 D 365 D Restricted Stock Unit (RSU) 0 2024-12-11 4 M 0 1705 0 D Common Stock 1705 18758 D Restricted Stock Units (RSUs) - 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, adoption date of referenced 10b5-1(c) plan is: 08-19-2024. This transaction was executed in multiple trades at prices ranging from $62.3600 to $62.7700. The price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price. Each Restricted Stock Unit (RSU) represents a right to receive one share of the Issuer's common stock without payment of specific consideration. Grants of Restricted Stock Units (RSUs) vest as follows: 25% of the RSUs will vest on the first anniversary of the date of grant, and an additional 6.25% of the RSUs shall vest at the end of each three month period thereafter. Not applicable. /s/ Tracy Feanny, Attorney in Fact For: Pravin Desale 2024-12-13