0001950047-24-000307.txt : 20240116 0001950047-24-000307.hdr.sgml : 20240116 20240116162235 ACCESSION NUMBER: 0001950047-24-000307 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240116 DATE AS OF CHANGE: 20240116 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: REGENXBIO Inc. CENTRAL INDEX KEY: 0001590877 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 471851754 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-37553 FILM NUMBER: 24535445 BUSINESS ADDRESS: STREET 1: 9804 MEDICAL CENTER DRIVE CITY: ROCKVILLE STATE: MD ZIP: 20850 BUSINESS PHONE: 240-552-8181 MAIL ADDRESS: STREET 1: 9804 MEDICAL CENTER DRIVE CITY: ROCKVILLE STATE: MD ZIP: 20850 FORMER COMPANY: FORMER CONFORMED NAME: REGENXBIO, Inc. DATE OF NAME CHANGE: 20150116 FORMER COMPANY: FORMER CONFORMED NAME: ReGenX Biosciences, LLC DATE OF NAME CHANGE: 20131101 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Mills Kenneth T. CENTRAL INDEX KEY: 0001652824 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O REGENXBIO INC. STREET 2: 9804 MEDICAL CENTER DRIVE CITY: ROCKVILLE STATE: MD ZIP: 20850 144 1 primary_doc.xml 144 0001652824 XXXXXXXX LIVE 0001590877 REGENXBIO INC 001-37553 9804 Medical Center Drive Rockville MD 20850 2405528181 KENNETH THOMAS MILLS Director Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 38th Fl. New York NY 10004

90000 1361700.00 43991980 01/16/2024 NASDAQ Common 01/16/2024 Exercise of Stock Options Issuer N 90000 01/16/2024 Cash N 10b5-1 Sales for KENNETH THOMAS MILLS

9804 Medical Center Drive Rockville MD 20850

Common 12/19/2023 45000 885823.50 01/16/2024 09/19/2023 /s/ Kenneth T Mills