InsiderTrades

Form 4 for RGNX REGENXBIO Inc.

Accepted 2026-09-03 17:29:58 ET · period of report 2026-09-01 · accession 0001789335-26-000008 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2026-09-03 17:29 2026-09-01 RGNX Chan Mitchell CFO F - Tax $9.32 -4,902 122.8K -4% -$45.7K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-09-01 F D 4,902 $9.32 122,815 D — — (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 determined based on the closing price of the issuer's common stock on September 1, 2026.