X0609 4 2026-08-16 0000855658 LATTICE SEMICONDUCTOR CORP LSCC 0001756011 Elashmawi Esam false 5555 NE MOORE COURT HILLSBORO OR 97124 1 SVP, Strategy and Marketing 1 Common Stock 2026-08-16 4 F 0 593 130.46 D 171600 D Common Stock 2026-08-17 4 F 0 438 132.67 D 171162 D Common Stock 2026-08-17 4 S 0 1934 132.7906 D 169228 D Common Stock 2026-08-17 4 S 0 1898 133.7708 D 167330 D Common Stock 2026-08-17 4 S 0 8882 134.9523 D 158448 D Common Stock 2026-08-17 4 S 0 1828 135.8299 D 156620 D Common Stock 2026-08-17 4 S 0 1200 136.5928 D 155420 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. The transaction indicated was conducted under an approved 10b5-1 Plan, adoption date of referenced 10b5-1(c) plan is: 05-18-2026. This transaction was executed in multiple trades at prices ranging from $132.2600 to $133.2500. 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. This transaction was executed in multiple trades at prices ranging from $133.2800 to $134.2300. 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. This transaction was executed in multiple trades at prices ranging from $134.2800 to $135.2700. 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. This transaction was executed in multiple trades at prices ranging from $135.2800 to $136.2100. 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. This transaction was executed in multiple trades at prices ranging from $136.4300 to $136.9300. 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. /s/ Tracy Feanny, Attorney in Fact For: Esam Elashmawi 2026-08-18