NSTS Bancorp(NSTS) - 2021 Q4 - Annual Report

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark one) Commission File Number 001-41232 NSTS BANCORP, INC. (Exact name of the registrant as specified in its charter) Delaware 87-2522769 (State or Other Jurisdiction of Incorporation ...