Business Outlook - First Quarter of 2023:

Non-GAAP Financial Measures: In addition to financial measures prepared in accordance with generally accepted accounting principles (GAAP), this earnings release makes reference to non-GAAP financial measures. With respect to the outlook for the first quarter of 2023, certain items that affect GAAP measurement of financial measures for gross margin percentage and total operating expenses is not accessible on a forward-looking basis because such items cannot be reasonably predicted without unreasonable efforts due to the unpredictability of the amounts and timing of events affecting the items we exclude from non-GAAP measures . Consequently, the Company is unable to provide a reasonable estimate of GAAP measurement for non-GAAP gross margin percentage or non-GAAP total operating expenses for first quarter guidance or a corresponding reconciliation to GAAP for the quarter. Additional information regarding the reasons the Company uses non-GAAP measures, a reconciliation of these measures to the most directly comparable GAAP measures, and other information relating to these measures are included below, following the GAAP financial information.

Investor Conference Call / Webcast Details:

Lattice Semiconductor will review the Company's financial results for the fiscal fourth quarter and full year 2022, and business outlook on Monday, February 13 at 5:00 p.m. Eastern Time. The dial-in number for the live audio call is 1-877-407-3982 or 1-201-493-6780 with conference identification number 13735470. A live webcast of the conference call will also be available on the investor relations section of www.latticesemi.com. The Company's financial guidance will be limited to the comments on its public quarterly earnings call and the public business outlook statements contained in this press release.

Forward-Looking Statements Notice:

The foregoing paragraphs contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, that involve estimates, assumptions, risks and uncertainties. Any statements about our expectations, beliefs, plans, objectives, assumptions or future events or performance are not historical facts and may be forward-looking. Such forward-looking statements include, but are not limited to, statements relating to our market position in secular growth markets; the size of our addressable market, new greenfield growth opportunities; our product portfolio expansion; accelerating customer momentum; strong financial execution; and the statements under the heading “Business Outlook - First Quarter of 2023.” Other forward-looking statements may be indicated by words such as “will,” “could,” “should,” “would,” “may,” “expect,” “plan,” “project,” “anticipate,” “intend,” “forecast,” “future,” “believe,” “estimate,” “predict,” “propose,” “potential,” “continue” or the negative of these terms or other comparable terminology.

Estimates of future revenue are inherently uncertain due to such factors such as global economic conditions which may affect customer demand, pricing and inflationary pressures, competitive actions, and international trade disputes and sanctions. In addition, the ongoing COVID-19 pandemic continues to impact the overall economy and, as a result of the foregoing, may negatively impact our operating results for future periods. Actual gross margin percentage and operating expenses could vary from the estimates on the basis of, among other things, changes in revenue levels, changes in product pricing and mix, changes in wafer, assembly, test and other costs, variations in manufacturing yields, the failure to sustain operational improvements, and the actual amount of compensation charges due to stock price changes. Actual results may differ materially from our expectations and are subject to risks and uncertainties that relate more broadly to our overall business, including those described in Item 1A in Lattice’s most recent Annual Report on Form 10-K and as may be supplemented from time-to-time in Lattice’s other filings with the Securities and Exchange Commission, all of which are expressly incorporated herein by reference.

Further economic and market disruptions from COVID-19 may increase or change the severity of our other risks reported in Item 1A in Lattice’s most recent Annual Report on Form 10-K. Lattice believes these and other risks and uncertainties could cause actual results to differ materially from the forward-looking statements. New risk factors emerge from time to time and it is not possible for Lattice’s management to predict all risk factors. You should not unduly rely on forward-looking statements because actual results could differ materially from those expressed in any forward-looking statements. In addition, any forward-looking statement applies only as of the date on which it is made. The Company does not intend to update or revise any forward-looking statements, whether as a result of events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Non-GAAP Financial Measures:

Included within this press release and the accompanying tables and notes are certain non-GAAP financial measures that supplement the Company's consolidated financial information prepared in accordance with U.S. GAAP, including non-GAAP gross margin, gross margin percentage, R&D expense, SG&A expense, operating expenses, income from operations, other (expense) income, net, income tax expense, net income, net income per share – basic, and net income per share - diluted. The non-GAAP measures presented exclude charges and adjustments primarily related to stock-based compensation and related tax effects, litigation expense outside the ordinary course of business, amortization of acquired intangible assets, restructuring plans and other charges, and the estimated tax effect of these items. These charges and adjustments are a result of periodic or non-core operating activities of the Company. The Company describes these non-GAAP financial measures and reconciles them to the most directly comparable GAAP measures in the tables and notes attached to this press release.