Company: RGNX
Filing Date: 2025-11-26
Form Type: S-3
Source: 0001193125-25-300539
Chunk: 39

Company: REGENXBIO Inc.
Filing Date: 2025-11-26
Form: S-3
Chunk 39
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 in violation of Delaware corporate law or obtained an improper personal benefit. Section 145 of the Delaware General Corporation Law authorizes a court to award, or a corporation’s board of directors to grant, indemnity to directors and officers under certain circumstances and subject to certain limitations. The terms of Section 145 of the Delaware General Corporation Law are sufficiently broad to permit indemnification under certain circumstances for liabilities, including reimbursement of expenses incurred, arising under the Securities Act. As permitted by the Delaware General Corporation Law, our restated certificate of incorporation and amended and restated bylaws contain provisions relating to the limitation of liability and indemnification of directors and officers. The restated certificate of incorporation provides that our directors will not be personally liable to us or our stockholders for monetary damages for any breach of fiduciary duty as a director, except for liability:

| • |     | for any breach of the director’s duty of loyalty to us or our stockholders; |

| • |     | for acts or omissions not in good faith or that involve intentional misconduct or a knowing violation of law; |

| • |     | in respect of unlawful payments of dividends or unlawful stock repurchases or redemptions as provided in 
 Section 174 of the Delaware General Corporation Law; or                                                  |

| • |     | for any transaction from which the director derives any improper personal benefit. |

II-1

Our restated certificate of incorporation also provides that if Delaware law is amended
after the approval by our stockholders of the certificate of incorporation to authorize corporate action further eliminating or limiting the personal liability of directors, then the liability of our directors will be eliminated or limited to the
fullest extent permitted by Delaware law.

Our amended and restated bylaws provide that we will indemnify our directors and officers to
the fullest extent permitted by Delaware law, as it now exists or may in the future be amended, against all expenses and liabilities reasonably incurred in connection with their service for or on our behalf. Our amended and restated bylaws provide
that we shall advance the expenses incurred by a director or officer in advance of the final disposition of an action or proceeding, and permit us to secure insurance on behalf of any director, officer, employee, or other enterprise agent for any
liability arising out of his or her action in that capacity, whether or not Delaware law would otherwise permit indemnification.

We
either have entered or intend to enter into indemnification agreements with each of our directors and executive officers and certain other key employees. The form of agreement provides