Specialized Disclosure Report (sd)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form SD

Specialized Disclosure Report

MoSys, Inc.

(Exact name of registrant as specified in its charter)

000-32929

(Commission File Number)

Delaware 77-0291941

(State or other jurisdiction of (I.R.S. Employer Identification No.) incorporation)

2309 Bering Drive

San Jose, California 95131

(Address of principal executive offices, with zip code)

James Sullivan

Chief Financial Officer

(408) 418-7500

(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 Act (17 CFR 240.13p-1) for the reporting period from January 1, 2018 to December 31, 2018.

Section 1 — Conflict Minerals Disclosure

Item 1.01 Conflict Minerals Disclosure and Report

This Form SD and a copy of the Conflict Minerals Report for MoSys, Inc., filed as Exhibit 1.02 hereto, are available on the MoSys, Inc. website, www.mosys.com, under the heading “Corporate Governance.”

Item 1.02 Exhibit

The Conflict Minerals Report required by Item 1.01 is filed as Exhibit 1.01 to this Form SD.

Section 2 - Exhibits

Item 2.01 Exhibits

Exhibit 1.01 –Conflict Minerals Report of Mosys, Inc. as required by Items 1.01 and 1.02 of this Form SD.

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.