Transaction · 0001789335-26-000008

Chan Mitchell

Chan Mitchell, CFO, reported a transaction classified as withholding at REGENXBIO Inc. involving 4902.000000 shares for an estimated $45686.64. Reported holdings after the transaction were 122815.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

withholdingSEC transaction code FCFO
RGNXREGENXBIO Inc.
Filing timeSep 03
Trade dateSep 01, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$9.19
Pre-filing
1mo ago +5.4%1w ago -3.4%1d ago +3.4%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

RGNX price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
RGNX since 2026-09-03Filed yesterday · 1 day of post-filing data
Loading…
Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
withholding
Code F
Identifier
0001789335-26-000008
Common Stock
Transaction date
Sep 01, 2026
Filed Sep 03, 2026, 09:29 PM · 2d delay
Shares
4.90k sh
$932 per share
Estimated value
-$4.56M
Computed from shares × price
Holdings after
122k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership
-12score
Filing-only score

-12

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Financial Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    Represents shares of common stock withheld to pay taxes upon the vesting of restricted stock units originally granted to the reporting person on September 16, 2024. The number of shares withheld was

  2. determined based on the closing price of the issuer's common stock on September 1, 2026.

Original filing · 0001789335-26-000008
Related transactions

0 other filings

Same reporting owner
Recent company activity

0 recent txs

RGNX