STOCK TITAN

REGENXBIO (RGNX) CMO Pakola exercises options and sells 2,161 shares under plan

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

REGENXBIO Inc. Chief Medical Officer Steve Pakola exercised stock options and sold shares in a planned transaction. On this Form 4, he exercised options for 2,161 shares of common stock at $7.86 per share, then sold 2,161 shares in an open-market sale at $13.64 per share.

These transactions were made pursuant to a Rule 10b5-1 trading plan, indicating they were pre-scheduled. After the sale, he directly holds 213,009 shares of common stock and 64,812 stock options that remain exercisable.

Positive

  • None.

Negative

  • None.
Insider PAKOLA STEVE
Role Chief Medical Officer
Sold 2,161 shs ($29K)
Type Security Shares Price Value
Exercise Stock Options (Right to Buy) 2,161 $0.00 --
Exercise Common Stock 2,161 $7.86 $17K
Sale Common Stock 2,161 $13.64 $29K
Holdings After Transaction: Stock Options (Right to Buy) — 64,812 shares (Direct, null); Common Stock — 215,170 shares (Direct, null)
Footnotes (1)
  1. This transaction was effected pursuant to a Rule 10b5-1 trading plan. The previously granted option, representing a right to purchase a total of 103,698 shares, became exercisable as follows: 25% of the shares subject to this option vested on January 2, 2026, and the balance vests in equal monthly installments over the 36 months thereafter while the optionee provides continuous service to the Issuer.
Shares sold 2,161 shares Open-market sale of common stock
Sale price $13.64 per share Price for 2,161 common shares sold
Option exercise price $7.86 per share Exercise price for 2,161 stock options
Shares held after 213,009 shares Common stock directly owned post-transaction
Options remaining 64,812 options Stock options outstanding after exercise
Original option grant size 103,698 shares Total shares subject to previously granted option
Rule 10b5-1 trading plan regulatory
"This transaction was effected pursuant to a Rule 10b5-1 trading plan."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Stock Options (Right to Buy) financial
"Stock Options (Right to Buy) with an expiration date of 2035-01-02"
Exercise or conversion of derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
open-market sale financial
"transaction_action: open-market sale of common stock"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
vesting financial
"the balance vests in equal monthly installments over the 36 months thereafter"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
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FAQ

What insider transaction did REGENXBIO (RGNX) report for Steve Pakola?

REGENXBIO reported that Chief Medical Officer Steve Pakola exercised stock options for 2,161 shares and sold 2,161 common shares. The Form 4 shows an option exercise followed by an open-market sale on the same date as part of routine equity activity.

How many REGENXBIO (RGNX) shares did Steve Pakola sell and at what price?

Steve Pakola sold 2,161 shares of REGENXBIO common stock at $13.64 per share. This sale followed an option exercise for the same number of shares, indicating an exercise-and-sell pattern disclosed in the Form 4 filing.

What options did Steve Pakola exercise in this REGENXBIO (RGNX) Form 4?

He exercised stock options covering 2,161 shares of REGENXBIO common stock at a conversion or exercise price of $7.86 per share. These options are part of a previously granted award that vests over time, as described in the filing’s footnotes.

How many REGENXBIO (RGNX) shares does Steve Pakola hold after this Form 4?

Following the reported transactions, Steve Pakola directly holds 213,009 shares of REGENXBIO common stock. The filing also shows he retains 64,812 stock options, providing additional potential future share ownership if exercised later.

Was the REGENXBIO (RGNX) insider sale by Steve Pakola under a Rule 10b5-1 plan?

Yes. The footnotes state the transaction was effected pursuant to a Rule 10b5-1 trading plan. Such plans pre-schedule trades in advance, making the timing more routine and less indicative of short-term views on the company’s prospects.

What is the vesting schedule for Steve Pakola’s REGENXBIO (RGNX) options mentioned in the Form 4?

The previously granted option for 103,698 shares vested 25% on January 2, 2026, with the remaining shares vesting in equal monthly installments over 36 months. Continued vesting depends on his ongoing service to REGENXBIO, according to the filing footnote.
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).
X
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*
PAKOLA STEVE

(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 Medical Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/02/2026
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 Stock07/02/2026M(1)2,161A$7.86215,170D
Common Stock07/02/2026S(1)2,161D$13.64213,009D
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
Stock Options (Right to Buy)$7.8607/02/2026M2,161 (2)01/02/2035Common Stock2,161$0.0064,812D
Explanation of Responses:
1. This transaction was effected pursuant to a Rule 10b5-1 trading plan.
2. The previously granted option, representing a right to purchase a total of 103,698 shares, became exercisable as follows: 25% of the shares subject to this option vested on January 2, 2026, and the balance vests in equal monthly installments over the 36 months thereafter while the optionee provides continuous service to the Issuer.
Remarks:
/s/ Patrick J. Christmas as attorney-in-fact07/06/2026
** 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)