Mazzariello Gina 4

What Happened
Gina Mazzariello, Chief Legal Officer of Amylyx Pharmaceuticals (AMLX), sold 3,448 shares in an open-market/private sale on February 2, 2026, for a total reported value of $50,516. The reported weighted-average price was $14.65 per share (sales ranged from $14.470 to $14.810). This was a sale to satisfy tax-withholding obligations tied to the vesting of restricted stock units, and the sales were automatic rather than at her discretion.

Key Details

• Transaction date: 2026-02-02; Form 4 filed: 2026-02-04 (timely within the 2-business-day window).
• Shares sold: 3,448; weighted-average price: $14.65; total proceeds: $50,516.
• Price range across multiple trades: $14.470 to $14.810 (weighted average per footnote).
• Reason/footnote: Sale was automatic to cover tax withholding on RSU vesting (footnote F1).
• Shares owned after the transaction: not disclosed in the provided filing excerpt.
• No 10b5-1 plan or other trading instruction was indicated in the disclosed excerpts.

Context
Sales to cover tax withholding on vested awards are routine and generally administrative (not necessarily a signal of insider sentiment). For retail investors, purchases or substantial discretionary sales tend to be more informative than automatic withholding sales.