Page 1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 ☐ FORM 20 - F REGISTRATION STATEMENT PURSUANT TO SECTION 12 ( b ) OR ( g ) OF THE SECURITIES EXCHANGE ACT OF 1934 Or ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requiring this shell company report .. For the transition period from to Commission File number : 000-23288 SILICOM LTD . ( Exact name of Registrant as specified in its charter and as translated into English ) ISRAEL ( Jurisdiction of incorporation or organization ) 14 Atir Yeda Street , Kfar Sava 4464323 , Israel ( Address of principal executive offices ) Mr. Eran Gilad , CFO and Company Secretary Telephone : + 972-9-764-4555 E - mail : erang@silicom.co.il 14 Atir Yeda Street , Kfar Sava 4464323 , Israel ( Name , Telephone , E - mail and / or Facsimile number and Address of Company Contact Person )