UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 10, 2025 4D Molecular Therapeutics Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39782 47-3506994 (State or Other Jurisdiction of Incorporation) 5858 HORTON STREET #455 EMERYVILLE, California 94608 (Address of Principal Executive Offices) (Zip Code) (Commissio ...