UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 001-33624 SINTX Technologies, Inc. (Exact name of registrant as specified in its charter) DELAWARE 84-1375299 (State or other jurisdiction (IRS Employer of incorp ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K [X] 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 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 juris ...