Table of Contents Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, $.001 par value ATRC NASDAQ Global Market UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 _____________________________________________ FORM 10-Q ___________________________________________________________________________________________ x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ¨ ...