SEC Form 4 · accession 0001346164-26-000006
REGENXBIO Inc. · RGNX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Curran Simpson
Officer — Chief Executive Officer · Director
Period of report
Dec 31, 2025
Accepted (ET)
Jul 6, 2026 · 4:51 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001590877
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1,F2 | Dec 31, 2025 | A | 951 | $6.9955 | A | 343,418 | D | |
| Common StockF3,F4 | Jun 30, 2026 | A | 1,453 | $10.18 | A | 344,871 | D | |
| Common StockF5 | Jul 1, 2026 | F | 6,818 | $13.09 | D | 338,053 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1The reporting person is voluntarily reporting the acquisition of shares of the Issuer's common stock pursuant to the REGENXBIO Inc. Employee Stock Purchase Plan ("ESPP") for the ESPP purchase period of July 1, 2025 through December 31, 2025. This transaction is exempt under Rule 16b-3(c).
- F2In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the Issuer's common stock on July 1, 2025.
- F3The reporting person is voluntarily reporting the acquisition of shares of the Issuer's common stock pursuant to the ESPP for the ESPP purchase period of January 1, 2026 through June 30, 2026. This transaction is exempt under Rule 16b-3(c).
- F4In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the Issuer's common stock on June 30, 2026.
- F5Represents shares of common stock withheld to pay taxes upon the vesting of restricted stock units originally granted to the reporting person on July 1, 2024. The number of shares withheld was determined based on the closing price of the issuer's common stock on July 1, 2026.