Welcome to our dedicated page for Regenxbio SEC filings (Ticker: RGNX), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Regenxbio’s gene-therapy disclosures can span hundreds of pages filled with trial protocols, FDA correspondence, and complex licensing terms. Finding the cash runway buried in a 10-K or spotting an ABBV-RGX-314 milestone in an 8-K shouldn’t take your entire day.
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Simpson Curran, serving as Chief Executive Officer and a director of REGENXBIO Inc. (RGNX), reported a sale of 7,624 shares of the issuer's common stock on 09/29/2025. The sale was effected under a Rule 10b5-1 trading plan and executed in multiple trades at prices ranging from $10.00 to $10.08, with a weighted average sale price of $10.03. Following the reported transaction, the reporting person beneficially owned 236,973 shares, held directly. The Form 4 was signed by an attorney-in-fact, Patrick J. Christmas, on 10/01/2025. No derivative transactions or other securities classes were reported in this filing.
REGENXBIO Inc. (RGNX) filed a Form 144 notifying the proposed sale of 15,358 shares of its common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $151,890.62 and an approximate planned sale date of 09/10/2025 on NASDAQ.
The shares were acquired as Restricted Stock Units from the issuer on 01/01/2023 and total outstanding shares are reported as 50,514,216, making the planned sale approximately 0.03% of outstanding stock. The filing affirms the signer does not possess undisclosed material adverse information and indicates no securities were sold in the past three months by the reporting person.
Craig Malzahn, Chief Technology Officer of REGENXBIO Inc. (RGNX), reported a non-derivative transaction dated 09/01/2025 in which 234 shares of common stock were disposed at a price of $8.93 per share. After the transaction he beneficially owned 17,585 shares directly. The filing states the 234 shares were withheld to pay taxes upon the vesting of restricted stock units originally granted on September 1, 2022, with the withholding amount calculated using the issuer's closing stock price on August 29, 2025. The form was signed via attorney-in-fact on 09/03/2025.
Chan Mitchell, the Chief Financial Officer of REGENXBIO Inc. (RGNX), reported a non-derivative disposition on 09/01/2025. The filing shows 4,901 shares of common stock were withheld to satisfy taxes upon the vesting of restricted stock units originally granted on September 16, 2024, using a withholding price of $8.93 (based on the closing price on August 29, 2025). After the withholding, the reporting person beneficially owns 53,968 shares directly. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person on 09/03/2025.
Redmile Group, LLC and related persons report a 9.99% beneficial position in REGENXBIO Inc. The filing shows Redmile Group, LLC and principal Jeremy C. Green each report shared voting and dispositive power over 5,062,477 shares, representing 9.9% of the class on a calculated basis. Those totals include 286,760 shares that could be issued upon exercise of pre-funded warrants but are limited by a Beneficial Ownership Limitation that prevents exercise that would cause ownership to exceed 9.99%. Redmile Biopharma Investments III, L.P. reports ownership of 3,733,796 shares (7.4%), comprised of 3,447,036 directly held shares plus warrants subject to the same blocker. All parties disclaim ownership except for pecuniary interest. The percentage base uses 50,388,693 outstanding shares as of June 9, 2025, plus the 286,760 potentially issuable Warrant shares.
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