One Stop Systems(OSS) - 2020 Q4 - Annual Report

(Mark One) ☒ 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 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _________ to _______ Commission File Number 001-38371 One Stop Systems, Inc. (Exact name of Registrant as specified in its Charter) Delaware 33-0885351 (State or o ...