Company: RGNX
Filing Date: 2025-11-26
Form Type: S-3
Source: 0001193125-25-300539
Chunk: 30

Company: REGENXBIO Inc.
Filing Date: 2025-11-26
Form: S-3
Chunk 30
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 any rights we offer will be described in the prospectus supplement relating to such rights. General We may issue rights to purchase common stock, preferred stock, debt securities or units. Rights may be issued independently or together with other securities and may or may not be transferable by the person purchasing or receiving the rights. In connection with any rights offering to our stockholders, we may enter into a standby underwriting, backstop or other arrangement with one or more underwriters or other persons pursuant to which such underwriters or other persons would purchase any offered securities remaining unsubscribed for after such rights offering. In connection with a rights offering to our stockholders, we would distribute certificates evidencing the rights and a prospectus supplement to our stockholders on or about the record date that we set for receiving rights in such rights offering. The applicable prospectus supplement will describe the following terms of any rights we may issue, including some or all of the following:

| • |     | the title and aggregate number of the rights; |

| • |     | the subscription price or a formula for the determination of the subscription price for the rights and the 
 currency or currencies in which the subscription price may be payable;                                     |

| • |     | if applicable, the designation and terms of the securities with which the rights are issued and the number of 
 rights issued with each such security or each principal amount of such security;                              |

| • |     | the number or a formula for the determination of the number of the rights issued to each stockholder; |

| • |     | the extent to which the rights are transferable; |

| • |     | in the case of rights to purchase debt securities, the principal amount of debt securities purchasable upon 
 exercise of one right;                                                                                      |

| • |     | in the case of rights to purchase common stock or preferred stock, the type of stock and number of shares of 
 stock purchasable upon exercise of one right;                                                                |

| • |     | the date on which the right to exercise the rights will commence, and the date on which the rights will expire 
 (subject to any extension);                                                                                    |

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

| • |     | the extent to which such rights include an over-subscription privilege with respect to unsubscribed securities; |

| • |     | if applicable, the procedures for adjusting the subscription price and number of shares of common stock or