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): July 23, 2024 Supernus Pharmaceuticals, Inc. (Exact name of registrant as specified in its charter) Delaware 001-35518 20-2590184 (State or other jurisdiction of incorporation or organization) (Commission File Number) (I.R.S. Employer Identification No.) (Address of Principal Executive Offices) ...