Guindo Chirfi insider trades
Guindo Chirfi has filed 23 Form 4s with the SEC that we hold, for Merck & Co., Inc. (MRK) (EVP, Access, Policy & Comms), Biogen INC. (BIIB) (Head of Glob Prod Strat & Com) and Beam Therapeutics Inc. (BEAM) (Director). Across all of them we count 0 purchases worth $0 and 5 sales worth $8.2M reported on Form 4. In the last 12 months: 0 purchases ($0) and 5 sales ($8.2M). The largest single trade was a sale of 20,000 shares of Merck & Co., Inc. worth $2.4M, dated 2026-02-05. The first filing on our record is dated 2022-01-21 and the latest 2026-08-13.
Merck & Co., Inc. (MRK)
| Trade date | Code | Shares | Value as filed | Filed | Source |
|---|---|---|---|---|---|
| 2026-02-05 | S, sale reported on Form 4 | 20,000 | $2.4M | 2026-02-06 | SEC |
| 2026-02-09 | S, sale reported on Form 4 | 10,000 | $1.2M | 2026-02-09 | SEC |
| 2026-02-12 | S, sale reported on Form 4 | 10,000 | $1.2M | 2026-02-12 | SEC |
| 2026-08-06 | S, sale reported on Form 4 | 15,000 | $2.0M | 2026-08-07 | SEC |
| 2026-08-13 | S, sale reported on Form 4 | 10,000 | $1.4M | 2026-08-13 | SEC |
Biogen INC. (BIIB)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Beam Therapeutics Inc. (BEAM)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Counted from the Form 4 filings this reporting owner (SEC CIK 1722753) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
