Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. For the Fiscal Year Ended December 31, 2022 or ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. For the transition period from _____ to _____ Commission File No. 001-38445 HELIUS MEDICAL TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 36-4787690 ...