Curran Simpson - 10 Sep 2025 Form 4 Insider Report for REGENXBIO Inc. (RGNX)

Signature
/s/ Patrick J. Christmas as attorney-in-fact
Issuer symbol
RGNX
Transactions as of
10 Sep 2025
Net transactions value
-$77,495
Form type
4
Filing time
12 Sep 2025, 16:30:45 UTC
Previous filing
03 Jul 2025
Next filing
01 Oct 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Simpson Curran Chief Executive Officer, Director C/O REGENXBIO INC., 9804 MEDICAL CENTER DRIVE, ROCKVILLE /s/ Patrick J. Christmas as attorney-in-fact 12 Sep 2025 0001346164

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RGNX Common Stock Sale $77,495 -7,734 -3.1% $10.02 244,597 10 Sep 2025 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 This transaction was effected pursuant to a Rule 10b5-1 trading plan.
F2 This transaction was executed in multiple trades at prices ranging from $10.00 to $10.07. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.