Chirfi Guindo $MRK SEC Form 4 Insider Trading

Chirfi Guindo has filed a total of 3 insider trades in $MRK since 2021. Their most recent trade was a sale of 10,000 shares, made on Feb 12, 2026. Their largest trade was a sale of 20,000 shares, made on Feb 05, 2026. We estimate that they now own 60,615 shares of $MRK, worth an estimated $7.2 million.

Insider Trading at $MRK

There have been a total of 108 insider trades reported at $MRK since 2021, with 18,241 shares purchased and 5.4 million shares sold. The most active insider traders in $MRK stock have been Kenneth C Frazier, Steven Mizell, and Joseph Romanelli. The most recent trade was a sale of 10,000 shares reported by Chirfi Guindo (Chief Marketing Officer), made on Feb 12, 2026.

$MRK Executives and Stock Owners with Insider Trades

• Kenneth C Frazier, Executive Chair

• Steven Mizell, EVP, Chief HR Officer

• Joseph Romanelli, President, Human Health Int?l

• Sanat Chattopadhyay, Exe V-P & Pres. MMD

• Jennifer Zachary, EVP, General Counsel

• Richard R. Deluca, EVP&Pres, Merck Animal Heallth

• Johannes Jacobus Oosthuizen, President, U.S. Market

• Robert M Davis, Chairman, CEO & President

• David Michael Williams, EVP,Chief Info&Digital Officer

• Chirfi Guindo, Chief Marketing Officer

• Rita A Karachun, Sr. VP Fince-Global Controller

• Robert M Davis, CEO & President

• Caroline Litchfield, EVP & CFO

• Dean Y Li, Executive VP & President, MRL

• Dalton E. Iii Smart, SVP Fin. - Global Controller

• Cristal N Downing, Chief Comm. & Public Afrs Ofcr

• Frank Clyburn, EVP & Pres ? Human Health

• Julie L. Gerberding, EVP, Chief Patient Officer

*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.