144 0002041538 XXXXXXXX LIVE 0000855658 LATTICE SEMICONDUCTOR CORPORATION 000-18032 5555 NE Moore Court Hillsboro OR 97124 5032688000 TONYA STEVENS Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

2593 173886.58 136786394 11/11/2025 NASDAQ Common 10/15/2025 Restricted Stock Units Issuer N 2593 10/15/2025 N/A N 10b5-1 Sales for TONYA STEVENS

5555 NE Moore Court Hillsboro OR 97124

Common 09/22/2025 3440 257759.20 10b5-1 Sales for TONYA STEVENS

5555 NE Moore Court Hillsboro OR 97124

Common 08/13/2025 3439 223259.88 The securities to be sold were acquired upon the vesting of restricted stock units during the period of 10/15/2025 through 11/05/2025. Sales that were executed on November 11, 2025 are being reported on this Form 144 filed on November 12, 2025 given the EDGAR system was not accepting filings on November 11, 2025 in observance of the federal holiday. 11/11/2025 12/06/2024 /s/ Tonya Stevens