Peetz Christopher 4

What Happened
Christopher Peetz, CEO of Mirum Pharmaceuticals (MIRM), reported a sale of 9,108 shares on February 2, 2026. The shares were disposed at $103.30 each, producing gross proceeds of $940,888. The filing indicates the sale was to cover tax withholding obligations tied to the vesting of restricted stock units — a routine, non‑purchase transaction rather than an expressed bullish bet.

Key Details

• Transaction date: 2026-02-02; Price: $103.30 per share; Shares sold: 9,108; Proceeds: $940,888.
• Transaction code: S (Sale). Footnote F1: shares sold to cover tax withholding on RSU vesting.
• Reported as an open-market or private sale on the Form 4.
• Filing date: 2026-02-03 (timely; next business day).
• Shares owned after the transaction: not disclosed in this Form 4.

Context
Sales to cover tax withholding for vested RSUs are common and generally considered routine administrative transactions rather than directional insider buys. For retail investors, purchases or option exercises that increase an insider’s stake can be more informative about sentiment; this filing documents a withholding-related sale.