LATTICE SEMICONDUCTOR CORP

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

LATTICE SEMICONDUCTOR CORPORATION

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

March 20, 2025

To Our Stockholders:

You are cordially invited to attend the 2025 Annual Meeting of Stockholders and any adjournments, postponements, or other delays thereof (the “Annual Meeting”) of Lattice Semiconductor Corporation. For your convenience, we are holding this year’s Annual Meeting virtually.

If you plan to participate in the Annual Meeting, please see the instructions in the accompanying proxy statement (the “Proxy Statement”). Stockholders will be able to listen, vote and submit questions (subject to the question guidelines) from any remote location that has Internet connectivity. There will be no physical location for stockholders to attend the Annual Meeting. Stockholders may participate in the Annual Meeting only by logging in at https://meetnow.global/MTX4VM2.

The attached Notice of Annual Meeting of Stockholders (the “Notice”) and Proxy Statement describe the matters to be acted upon at the Annual Meeting. Included with the Proxy Statement is a copy of our Annual Report on Form 10-K for the fiscal year ended December 28, 2024 (the “Annual Report”). We encourage you to read the Annual Report. It includes our audited financial statements and information about our operations, markets, and products.

It is important that your shares be represented and voted at the Annual Meeting whether or not you plan to attend. Therefore, we urge you to vote your shares as soon as possible as directed in the proxy materials you receive. A copy of the Proxy Statement and the Annual Report are available online at www.edocumentview.com/LSCC. Please vote in advance of the Annual Meeting by telephone, online or by signing, dating and returning a proxy card to ensure your representation at the Annual Meeting. Voting in advance of the Annual meeting does not deprive you of your right to attend the Annual Meeting and to vote your shares at the Annual Meeting.

Sincerely,

Ford Tamer Chief Executive Officer

Whether or not you plan to attend the Annual Meeting, please vote your shares as soon as possible. You can vote your shares by telephone, online or by signing and dating a proxy card and returning it to the address provided on such proxy card. If you receive more than one proxy card because you own shares that are registered separately, then please vote all of the shares shown on all of your proxy cards following instructions listed on each of the individual proxy cards. Thank you.

Notice of Annual

Meeting of Stockholders

May 2, 2025

1:00 p.m. Pacific Time

To Our Stockholders:

You may participate in the 2025 Annual Meeting of Stockholders and any adjournments, postponements, or other delays thereof (the “Annual Meeting”) of Lattice Semiconductor Corporation by logging in at https://meetnow.global/MTX4VM2. We are holding the Annual Meeting virtually.

If you plan to participate in the Annual Meeting, please see the instructions in the accompanying proxy statement (the “Proxy Statement”). Stockholders will be able to listen, vote, and submit questions (subject to the question guidelines, which are summarized in the section of the Proxy Statement titled “General Information About the Meeting – How Can I Participate in the Virtual Annual Meeting?”) from any remote location that has Internet connectivity. There will be no physical location for stockholders to attend the Annual Meeting.

MATTERS TO BE VOTED ON:

The foregoing items of business are described in the Proxy Statement accompanying this Notice of Annual Meeting of Stockholders.

Only stockholders of record at the close of business on March 3, 2025, are entitled to notice of and to vote at the Annual Meeting. All stockholders are cordially invited to attend and participate in our Annual Meeting. Whether or not you plan to attend the Annual Meeting, to assure your representation at the Annual Meeting, please vote as soon as possible. We are making our proxy materials available to our stockholders over the Internet, and you may vote at the Annual Meeting by mail, by telephone or online. For specific voting instructions, please refer to the information provided in the Proxy Statement. A copy of the Proxy Statement and the Annual Report on Form 10-K for the fiscal year ending December 28, 2024 (the “Annual Report”) are available online at www.edocumentview.com/LSCC. For specific instructions on how to vote your shares, please refer to the instructions in the proxy materials you receive in the mail and refer to the section of the Proxy Statement titled “How to Vote.”

Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting to Be Held on May 2, 2025 The Proxy Statement and Annual Report to stockholders are available at www.edocumentview.com/LSCC. YOUR VOTE IS IMPORTANT