# EDGAR Filing Document

**Accession Number:** 0001590877
**File Stem:** 0000000000-25-006467
**Filing Date:** 2025-6
**Character Count:** 2328
**Document Hash:** 0de624c1776787a7255530c550bb6483
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000000000-25-006467.hdr.sgml**: 20250724

**ACCESSION NUMBER**: 0000000000-25-006467

**CONFORMED SUBMISSION TYPE**: UPLOAD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250620

**FILED FOR**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** REGENXBIO Inc.
- **CENTRAL INDEX KEY:** 0001590877
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 471851754
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** UPLOAD
- **SEC FILE NUMBER:** 333-288053

**BUSINESS ADDRESS:**
- **STREET 1:** 9804 MEDICAL CENTER DRIVE
- **CITY:** ROCKVILLE
- **STATE:** MD
- **ZIP:** 20850
- **BUSINESS PHONE:** 240-552-8181

**MAIL ADDRESS:**
- **STREET 1:** 9804 MEDICAL CENTER DRIVE
- **CITY:** ROCKVILLE
- **STATE:** MD
- **ZIP:** 20850

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** REGENXBIO, Inc.
- **DATE OF NAME CHANGE:** 20150116

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ReGenX Biosciences, LLC
- **DATE OF NAME CHANGE:** 20131101
**PUBLIC REFERENCE ACCESSION NUMBER**: 0001193125-25-140870

## Text-Extract

```

                                                           June 20, 2025

Curran Simpson
Chief Executive Officer
REGENXBIO Inc.
9804 Medical Center Drive
Rockville, MD 20850

       Re: REGENXBIO Inc.
           Registration Statement on Form S-3
           Filed June 13, 2025
           File No. 333-288053
Dear Curran Simpson:

       This is to advise you that we have not reviewed and will not review your
registration
statement.

        Please refer to Rules 460 and 461 regarding requests for acceleration.
We remind you
that the company and its management are responsible for the accuracy and
adequacy of their
disclosures, notwithstanding any review, comments, action or absence of action
by the staff.

       Please contact Doris Stacey Gama at 202-551-3188 with any questions.

                                                           Sincerely,

                                                           Division of
Corporation Finance
                                                           Office of Life
Sciences
cc:   Matthew C. Franker, Esq.

```

### Attached PDF Documents

**Attachment 1:** `filename1`

_No text found in this document._