X0609 4 2026-09-11 0000855658 LATTICE SEMICONDUCTOR CORP LSCC 0001992449 Desale Pravin false 5555 NE MOORE COURT HILLSBORO OR 97124 1 SVP, R&D 1 Common Stock 2026-09-11 4 F 0 869 119.76 D 71216 D Common Stock 2026-09-11 4 A 0 8713 0 A 79929 D Common Stock 2026-09-11 4 F 0 4434 119.76 D 75495 D Common Stock 2026-09-14 4 S 0 2039 111.83 D 73456 D 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. Represents shares issued upon achievement of the performance criteria of performance based restricted stock units (PRSUs) granted to the Reporting Person on September 11, 2023. These PRSUs vested on September 11, 2026. Restricted Stock Units (RSUs) - no purchase price for this transaction. The transaction indicated was conducted under an approved 10b5-1 Plan, adoption modification date of referenced 10b5-1(c) plan is: 02-18-2026. /s/ Tracy Feanny, Attorney in Fact For: Pravin Desale 2026-09-15