MRK

Merck & Co., Inc.

Latest Form 4:Sale$10.7MbyZachary Jennifer (EVP, General Counsel) · filed Aug 13, 2026

Merck & Co., Inc. (MRK) has 45 SEC Form 4 filings (91 transaction rows) in the rolling window, disclosed by 11 distinct insiders. Most recent filing: Aug 13, 2026.

The most active filer is EVP, Access, Policy & Comms Guindo Chirfi with 5 filings. Insiders have net sold $30.0M over the trailing 6 months.

  • Industry:Drug Manufacturers - General
  • CEO:Robert Davis
  • Employees:73,000
  • HQ:Rahway, NJ, US
  • IPO:1978-01-13

Insider Buying

$0

reported purchases (SEC code P)

Insider Selling

$72.0M

reported sales (SEC code S)

Unique Insiders

11

in the rolling window

Market Cap

$366.0B

latest known value

Source
Zachary JenniferFirst in 6 months
Sale$10.7MAug 13SEC ↗
Sale$1.4MAug 13SEC ↗
Sale$2.7MAug 12SEC ↗
Sale$1.7MAug 12SEC ↗
Sale$1.5MAug 12SEC ↗
DeLuca Richard R.First in 6 months
Sale$789KAug 10SEC ↗
Maraldo David R.First filing
Sale$2.4MAug 7SEC ↗
Williams David MichaelFirst in 6 months
Sale$6.8MAug 7SEC ↗
Guindo ChirfiFirst in 6 months
Sale$2.0MAug 7SEC ↗
Sale$1.2MFeb 12SEC ↗
Sale$1.2MFeb 10SEC ↗
Zachary JenniferFirst filing
Sale$14.5MFeb 9SEC ↗
Sale$1.2MFeb 9SEC ↗
Li Dean YFirst filing
Sale$1.8MFeb 6SEC ↗
Sale$5.0MFeb 6SEC ↗
Sale$766KFeb 6SEC ↗
Davis Robert MFirst filing
Sale$5.6MFeb 6SEC ↗
Williams David MichaelFirst in 3 months
Sale$610KFeb 6SEC ↗
Guindo ChirfiFirst filing
Sale$2.4MFeb 6SEC ↗
Sale$1.8MFeb 6SEC ↗
DeLuca Richard R.First filing
Sale$4.6MFeb 6SEC ↗
Downing Cristal NFirst filing
Sale$616KNov 12SEC ↗
Sale$720KNov 4SEC ↗

Congress trading MRK

See timeline →
  • RRep. Keith SelfSale$1,001 - $15,0002025-01-10

STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.

Related companies

Merck & Co., Inc. is in the Healthcare sector.