UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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, 2023 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. 001-33624 SINTX Technologies, Inc. (Exact name of registrant as specified in its charter) Delaware 84-1375299 (State or other jurisdict ...