Start Time: 16:30 January 1, 0000 5:07 PM ET Exagen Inc. (NASDAQ:XGN) Q4 2019 Earnings Conference Call March 25, 2020, 16:30 PM ET Company Participants Ron Rocca - President and CEO Kamal Adawi - CFO Mark Hazeltine - SVP of Finance & Corporate Development Conference Call Participants Doug Schenkel - Cowen and Company Brian Weinstein - William Blair Craig Bijou - Cantor Fitzgerald Operator Good afternoon. Welcome to Exagen Inc. Fourth Quarter and Full Year 2019 Results Conference Call. As a reminder, today’s ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File Number: 001-39049 EXAGEN INC. (Exact name of registrant as specified in its charter) Delaware 20-0434866 (State or other jurisdiction of incorpor ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-39049 EXAGEN INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) 1261 Liberty Way, Suite ...