Washington, DC 20549
Specialized Disclosure Report


Lattice Semiconductor Corporation
(Exact name of registrant as specified in its charter)

(State or other jurisdiction
of incorporation)
(Commission File Number)
(IRS Employer
Identification No.)
111 SW Fifth Avenue, Suite 700, Portland, Oregon 97204
(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:

Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2017.

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, 2017 and determined that certain products that it contracted to manufacture contain conflict minerals that are necessary to the functionality of such products. Based on its reasonable country of origin inquiry, Lattice has reason to believe that certain necessary conflict minerals may have originated in the Democratic Republic of the Congo or an adjoining country and may not be from recycled or scrap sources.

A copy of Lattice Semiconductor Corporation's Conflict Minerals Report is filed as Exhibit 1.01 hereto and is publicly available at

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.


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.

Lattice Semiconductor Corporation

/s/ Byron W. Milstead
Date: May 31, 2018
Byron W. Milstead
Corporate Vice President, General Counsel & Secretary