Chirfi Guindo, Head of Glob Prod Strat & Com at BIOGEN INC. (BIIB), sold 3,087 shares at $440.00 ($1.4M) on 2021-06-07, disclosed to the SEC on 2021-06-09.
Open-market sale of $1.4M BIIB by Head of Glob Prod Strat & Com. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| Filing → |
| MRK | SELL | 2026-02-12 | $1.2M | — | Filing → |
| MRK | SELL | 2026-02-09 | $1.2M | — | Filing → |
| MRK | SELL | 2026-02-06 | $2.4M | — | Filing → |