Lattice Semiconductor Investor Presentation — February 2021

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Bob Nelson Rick Muscha

Lattice Semiconductor Corporation Lattice Semiconductor Corpora tion

408-826-6339 408-826-6000Bob.Nelson

@latticesemi.co m Rick.Muscha @latticesemi.co m

LATTICE SEMICONDUCTOR REPORTS

FOURTH QUARTER AND FULL YEAR 2020 RESULTS

• Revenue Growth of 6.9% in 4Q 2020 Compared to 4Q 2019

• Gross Margin Expands to 60.5% / 61.6% in 4Q 2020 on a GAAP / N on-GAAP Basis, Compared to 59.2% / 59.6%,

respectivel y, in 4Q 2019

• Net Income Increases to $0.11 / $0.19 Per Diluted Share on a G AAP / Non-GAAP Basis for 4Q 2020, Compared to $0.10 /

$0.17, respectivel y, for 4Q 2019

* GAAP represents U.S. Generall y Accepted Accounting Principles . Non-GAAP represents GAAP excludi ng the impact of certain activ ities

which the Company's management excludes in analyzing the Company's operating results and in understanding trends in the Company 's

earnings. Additional information relating to these measures is included below in “N on-GAAP Financial Measures.” For a reconcili ation of

GAAP to non-GAAP results, see accompanying tables "Reconc iliation of U.S. GAAP to Non-GAAP Financial Measures."

HILLSBORO, OR - Febr uary 16, 2021 - Lattice Semiconductor Corporation (NASDAQ: LSCC), the low power programmable

leader, announced financial results today for the fiscal fourth quarter and full year ended January 2, 2021.

Jim Anderson, president and CE O, said, "Profitability increased significantly for the full year 2020, as we continued to execu te on