LYTIR

Insider · SEC Form 4 · EVP, Access, Policy & Comms

Chirfi Guindo

Filed with the SEC as Guindo Chirfi; the order above is the one the filer's own signature uses.

In the 12 months to Nov 8, 2026, on the open market: sold $3.3M of MRK. Filed a median of 0 business days after the trade.

Open-market purchases and sales this filer reported on SEC Form 4, by the day traded. Insiders have two business days to file. A sale marked 10b5-1 was made under a plan adopted in advance. How to read these

  1. MRKSold: Merck & Co., Inc. Aug 13, 2026 10,000 shares filed Aug 13, 2026 36,613 shares held directly after, as filed filing $1.4M
  2. MRKSold: Merck & Co., Inc. Aug 6, 2026 15,000 shares filed Aug 7, 2026 46,613 shares held directly after, as filed filing $2.0M

Source: SEC Form 4 filings. Value is shares × the price reported on the filing; a filing whose price failed Lytir's check against the market price is left out, and a trade that related owners reported on separate forms is counted once. Filings can be late, amended or wrong at the source; see methodology.