0001590877 2025-11-26 2025-11-26 0001590877 1 2025-11-26 2025-11-26 0001590877 2 2025-11-26 2025-11-26 0001590877 3 2025-11-26 2025-11-26 0001590877 4 2025-11-26 2025-11-26 0001590877 5 2025-11-26 2025-11-26 0001590877 6 2025-11-26 2025-11-26 0001590877 7 2025-11-26 2025-11-26 0001590877 1 2025-11-26 2025-11-26 0001590877 2 2025-11-26 2025-11-26 iso4217:USD pure shares S-3 S-3 EX-FILING FEES 0001590877 REGENXBIO Inc. N/A 0.0001381 0.0001381 0.0001381 0.0001381 0.0001381 0.0001381 true false S-3 REGENXBIO Inc. Equity Common Stock, par value $0.0001 per share true Equity Preferred Stock, par value $0.0001 per share true Other Warrants true Debt Debt Securities true Other Rights true Other Units true false Unallocated (Universal) Shelf true 300000000.00 0.0001381 41430.00 300000000.00 41430.00 0.00 41430.00 0.00 (1) An indeterminate aggregate initial offering price or number or amount of securities of each identified class are being registered as may from time to time be offered at indeterminate prices, including an indeterminate number or amount of securities that may be issued upon the exercise, settlement, exchange or conversion of securities offered hereunder, which together shall have an aggregate initial offering price not to exceed $300,000,000. Separate consideration may or may not be received for securities that are issuable upon conversion of, or in exchange for, or upon exercise of, convertible or exchangeable securities. In addition, pursuant to Rule 416 under the Securities Act of 1933 (the "Securities Act"), the securities being registered hereunder includes such indeterminate number of additional securities as may be issuable as a result of stock splits, stock dividends or similar transactions. (2) Each unit will represent an interest in two or more other securities registered hereunder, which may or may not be separable from one another. true REGENXBIO Inc. S-3 333-269086 2025-03-13 41430.00 Unallocated (Universal) Shelf 300000000.00 true REGENXBIO Inc. S-3 333-269086 2025-03-13 41430.00 The registrant has terminated or completed any offerings that included the unsold securities under the Prior Registration Statement. The registrant previously paid a registration fee of $45,930.00 with respect to Post-Effective Amendment No. 1 to the registrant's Registration Statement on Form S-3 (File No. 333-269086), which was filed by the registrant on March 13, 2025 (the "Prior Registration Statement") pertaining to the registration of an indeterminant aggregate initial offering price or number or amount of securities with an aggregate initial offering price not to exceed $300,000,000, all of which remained unsold. Pursuant to Rule 457(p) under the Securities Act, the registrant is entitled to offset the full registration fee of $45,930.00 with respect to unsold securities registered under the Prior Registration Statement.