Company: RGNX
Filing Date: 2025-06-13
Form Type: S-8
Source: 0000950170-25-086259
Chunk: 6

Company: REGENXBIO Inc.
Filing Date: 2025-06-13
Form: S-8
Chunk 6
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 or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted against the registrant by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question of whether such indemnification by it is against public policy as expressed in the Securities Act of 1933 and will be governed by the final adjudication of such issue.

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Rockville, State of Maryland, on this 13th day of June, 2025.

| REGENXBIO INC. |                                       |
| By:            | /s/ Curran Simpson                    |
|                | Curran Simpson                        |
|                | President and Chief Executive Officer |

POWER OF ATTORNE Y AND SIGNATURES KNOW ALL PERSONS BY THESE PRESENTS , that each person whose signature appears below hereby constitutes and appoints Curran Simpson, Mitchell Chan and Patrick J. Christmas, and each of them, as his or her true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution, for him or her in any and all capacities, to sign any and all amendments to this Registration Statement on Form S-8 (including post-effective amendments), and to file the same, with all exhibits thereto and other documents in connection therewith, with the United States Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully for all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

| Signature                                        
 /s/ Curran SimpsonCurran