Company: RGNX
Filing Date: 2025-03-13
Form Type: POSASR
Source: 0001193125-25-053917
Chunk: 19

Company: REGENXBIO Inc.
Filing Date: 2025-03-13
Form: POSASR
Chunk 19
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| • |     | anti-dilution provisions of the warrants, if any; |

| • |     | redemption or call provisions, if any, applicable to the warrants; |

| • |     | information with respect to book-entry procedures; |

10

| • |     | identity of the warrant agent; and |

| • |     | any additional terms of the warrants, including terms, procedures and limitations relating to the exchange and 
 exercise of the warrants.                                                                                      |

Debt Warrants The prospectus supplement relating to a particular issue of warrants to issue debt securities will describe the terms of those warrants, including the following:

| • |     | the title of the warrants; |

| • |     | the offering price for the warrants, if any; |

| • |     | the aggregate number of the warrants; |

| • |     | the designation and terms of the debt securities purchasable upon exercise of the warrants; |

| • |     | the terms for changes or adjustments to the exercise price of the warrants; |

| • |     | if applicable, the designation and terms of the debt securities that the warrants are issued with and the number 
 of warrants issued with each debt security;                                                                      |

| • |     | if applicable, the date from and after which the warrants and any debt securities issued with them will be 
 separately transferable;                                                                                   |

| • |     | the principal amount of debt securities that may be purchased upon exercise of a warrant and the price at which 
 the debt securities may be purchased upon exercise;                                                             |

| • |     | the dates on which the right to exercise the warrants will commence and expire; |

| • |     | if applicable, the minimum or maximum amount of the warrants that may be exercised at any one time; |

| • |     | whether the warrants represented by the warrant certificates or debt securities that may be issued upon exercise 
 of the warrants will be issued in registered or bearer form;                                                     |

| • |     | information relating to book-entry procedures, if any; |

| • |     | the currency or currency units in which the offering price, if any, and the exercise price are payable; |

| • |     | if applicable, a discussion of material U.S. federal income tax considerations; |

| • |     | anti-dilution provisions of the warrants, if any; |

| • |     | redemption or call provisions, if any, applicable to the warrants; |

| • |     | information