0002100121-26-000723.txt : 20260429 0002100121-26-000723.hdr.sgml : 20260429 20260429152123 ACCESSION NUMBER: 0002100121-26-000723 CONFORMED SUBMISSION TYPE: SCHEDULE 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20260429 DATE AS OF CHANGE: 20260429 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: SUPERNUS PHARMACEUTICALS, INC. CENTRAL INDEX KEY: 0001356576 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences EIN: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SCHEDULE 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-86843 FILM NUMBER: 26914952 BUSINESS ADDRESS: STREET 1: 9715 KEY WEST AVENUE CITY: ROCKVILLE STATE: MD ZIP: 20850 BUSINESS PHONE: 301-838-2500 MAIL ADDRESS: STREET 1: 9715 KEY WEST AVENUE CITY: ROCKVILLE STATE: MD ZIP: 20850 FORMER COMPANY: FORMER CONFORMED NAME: SUPERNUS PHARMACEUTICALS INC DATE OF NAME CHANGE: 20060317 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: VANGUARD PORTFOLIO MANAGEMENT LLC CENTRAL INDEX KEY: 0002100121 ORGANIZATION NAME: EIN: 392888838 STATE OF INCORPORATION: PA FISCAL YEAR END: 1231 LEGAL ENTITY IDENTIFIER: 529900YN99W7NU4H6B84 FILING VALUES: FORM TYPE: SCHEDULE 13G BUSINESS ADDRESS: STREET 1: 100 VANGUARD BLVD CITY: MALVERN STATE: PA ZIP: 19355 BUSINESS PHONE: 610-669-6148 MAIL ADDRESS: STREET 1: 100 VANGUARD BLVD CITY: MALVERN STATE: PA ZIP: 19355 SCHEDULE 13G 1 primary_doc.xml X0202 SCHEDULE 13G 0002100121 XXXXXXXX LIVE Common Stock 03/31/2026 0001356576 Supernus Pharmaceuticals Inc 868459108 9715 Key West Avenue Rockville MD 20850 Rule 13d-1(b) Vanguard Portfolio Management PA 24616 0 3263309 0 3263309 5.66 IA In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard Portfolio Management LLC and the following affiliates of Vanguard Portfolio Management LLC or business divisions of such affiliates: Vanguard Fiduciary Trust Company and Vanguard Global Advisers, LLC. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Portfolio Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Portfolio Management LLC, or business divisions of such subsidiaries whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release. Supernus Pharmaceuticals Inc 9715 Key West Avenue, Rockville, MD, 20850 Vanguard Portfolio Management 100 Vanguard Blvd,, Malvern, PA, 19355 PA N IA 3263309 5.66 24616 0 3263309 0 Y N Vanguard Portfolio Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%. Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Vanguard Portfolio Management Ashley Grim 04/29/2026