Christmas Patrick J. 4

What Happened

• Patrick J. Christmas, Chief Strategy & Legal Officer of REGENXBIO (RGNX), had 4,700 shares of company stock withheld to satisfy tax withholding obligations upon the vesting of restricted stock units (RSUs). The withholding was recorded as a disposition with an implied price of $11.16 per share, for a total value of approximately $52,452.
• This was a tax-withholding event tied to RSU vesting rather than an open-market sale for investment purposes.

Key Details

• Transaction date: February 1, 2026; Filing date: February 3, 2026 (Form 4 accession 0001521123-26-000006).
• Price used: $11.16 per share; Shares withheld/disposed: 4,700; Total value: ~$52,452.
• Shares owned after the transaction: not specified in the provided filing details.
• Footnote: F1 — shares were withheld to pay taxes on RSUs originally granted August 1, 2024; the number withheld was determined using the issuer’s closing price on February 1, 2026.
• Timeliness: Filed on Feb 3 covering a Feb 1 transaction; this filing appears to have been submitted promptly.

Context

• Tax-withholding via share surrender is a routine administrative step when RSUs vest; it reflects tax obligations rather than a decision to realize gains or change investment stance.
• For retail investors, these transactions are generally less informative about insider sentiment than open-market purchases or voluntary sales.