Merck & Co., Inc. 4

Merck EVP Chirfi Guindo sold 10,000 shares of Merck & Co., Inc. common stock at about $135.00 per share for roughly $1.35 million.

On 2026-08-13, Chirfi Guindo, EVP, Access, Policy & Comms of Merck & Co., Inc., executed an open market sale of 10,000 shares of Merck common stock at a reported price of $135.00 per share, for total proceeds of approximately $1.35 million. Following this disposition, Guindo reported direct ownership of 36,613.127 shares of Merck common stock, which, at the same $135.00 reference price, represent an equity stake valued at roughly $4.94 million. The transaction appears to be a straightforward discretionary sale rather than a compensatory grant or option exercise and modestly reduces the insider’s direct holdings while leaving a substantial remaining position in the company.

Filing Facts

CIK

310158

Ticker

MRK

Form

4

Source Type

fda

Accession

0000310158-26-000223

Alert Tier

7