UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q Commission File Number: 001-38981 Mirum Pharmaceuticals, Inc. (Exact name of registrant as specified in its charter) Delaware 83-1281555 ( State or other jurisdiction of incorporation or organization) 950 Tower Lane, Suite 1050, Foster City, California 94404 (Address of principal executive offices) (Zip Code) (I.R.S. Employer Identification No.) (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EX ...