UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 for the quarterly period ended March 31, 2023 or INSIGNIA SYSTEMS INC/MN (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Minnesota 41-1656308 (I.R.S. Employer Identification No.) 212 Third Avenue N, Suite 356, Minneapolis, MN 55401 (Address of principal executive offic ...