LSCC Lattice Semiconductor Corp

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM SD

Specialized Disclosure Report

5555 NE Moore Ct., Hillsboro, Oregon 97124

(Address of principal executive offices, including zip code)

Byron W. Milstead

Corporate Vice President, General Counsel & Secretary

(503) 268-8000

(Name and telephone number, including area code, of the person to contact in connection with this report.)

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

Section 1 - Conflict Minerals Disclosure

Item 1.01 Conflict Minerals Disclosure and Report

Lattice Semiconductor Corporation (together with its subsidiaries, “Lattice”) has evaluated its products for the year ending December 31, 2018 and determined that certain products that it contracted to manufacture contain conflict minerals that are necessary to the functionality of such products and that, after conducting a reasonable country of origin inquiry, Lattice is filing a Conflict Minerals Report.

A copy of Lattice Semiconductor Corporation’s Conflict Minerals Report is filed as Exhibit 1.01 hereto and is publicly available at h t tp : / / w w w . la t tic e se m i . c om / Ab ou t / Cor p o r a t e S oc i al R e sp o ns ib ili t y .

Item 1.02 Exhibit

Lattice Semiconductor Corporation has filed, as an exhibit to this Form SD, the Conflict Minerals Report required by Item 1.01.

Section 2 - Exhibits

Item 2.01 Exhibits

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.