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REGENXBIO CFO receives 24,305-share stock grant

The reported transaction price was $0.00 per share for the time-based award.

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Form Type
4

Rhea-AI Filing Summary

REGENXBIO Inc. Chief Financial Officer Mitchell Chan acquired 24,305 shares underlying a time-based restricted stock unit award on November 1, 2026. One-third of the award is scheduled to vest on each of November 1, 2027, November 1, 2028, and November 1, 2029, while he provides continuous service to the issuer. His reported direct position following the award was 147,120 shares.

Insider Chan Mitchell
Role Chief Financial Officer
Type Security Shares Price Value
Grant/Award Common Stock F1 24,305 $0.00 $0.00
Holdings After Transaction: Common Stock — 147,120 shares (Direct)
Holdings Before and After: Common Stock, 122,815 to 147,120 shares (Direct)
Footnotes (1)
  1. F1. Represents shares of common stock underlying a time-based restricted stock unit award (RSU). 1/3rd of the shares subject to the RSU award shall vest on each of November 1, 2027, November 1, 2028, and November 1, 2029, while the recipient provides continuous service to the Issuer.
RSU award shares 24,305 shares Award reported November 1, 2026
Reported transaction price $0.00 per share Time-based restricted stock unit award
Reported direct position after award 147,120 shares Following the November 1, 2026 award
Vesting dates November 1, 2027; November 1, 2028; November 1, 2029 One-third of the award vests on each date while the recipient provides continuous service
time-based restricted stock unit award financial
"time-based restricted stock unit award (RSU)"
vest financial
"shall vest on each of November 1, 2027, November 1, 2028, and November 1, 2029"
A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.
continuous service financial
"while the recipient provides continuous service to the Issuer"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RGNX shares did Mitchell Chan receive in his RSU award?

Mitchell Chan acquired 24,305 shares underlying a time-based restricted stock unit award on November 1, 2026.

What transaction price did the RGNX Form 4 report for Mitchell Chan’s award?

The reported transaction price was $0.00 per share for the award of 24,305 shares underlying a time-based restricted stock unit.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a 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). See Instruction 10.
1. Name and Address of Reporting Person*
Chan Mitchell

(Last)(First)(Middle)
C/O REGENXBIO INC.
9804 MEDICAL CENTER DRIVE

(Street)
ROCKVILLE MARYLAND 20850

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
REGENXBIO Inc. [ RGNX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
11/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock11/01/2026A24,305(1)A$0.00147,120D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Represents shares of common stock underlying a time-based restricted stock unit award (RSU). 1/3rd of the shares subject to the RSU award shall vest on each of November 1, 2027, November 1, 2028, and November 1, 2029, while the recipient provides continuous service to the Issuer.
Remarks:
/s/ Patrick J. Christmas as attorney-in-fact11/03/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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