Chirfi Guindo, Chief Marketing Officer at Merck & Co., Inc. (MRK), sold 20,000 shares at $121.88 ($2.4M) on 2026-02-05, disclosed to the SEC on 2026-02-06.
Open-market sale of $2.4M MRK by Chief Marketing Officer. 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 → |
| BIIB | SELL | 2021-06-09 | $1.4M | — | Filing → |