Merck & Co Inc

MRKNYSE
$152.55
3.562.39%
al cierre: Aug 21, 5:00 PM EST
$153.16
0.610.4%
After hour: Aug 21, 7:55 PM EST

Merck & Co Ownership & Insider Activity

Merck & Co (MRK) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 0.2% of shares outstanding. Institutional investors hold 55.1%. Over the past 90 days, insiders made 5 sales worth $14.7M.

Shares Outstanding

2.467B

Shares Float

2.466B

Insider Shares Owned

4.137M

Insider % Owned

0.2%

Institutional Shares Held

1.360B

Institutional % Held

55.1%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

0

Sales (90d)

5

$14.7M total

Net Activity

Net Selling

Net Value (90d)

-$14.7M

Merck & Co Insider Transactions (Last 6 Months)

DateInsiderTitleTypeSharesPriceValue
Aug 13, 2026Chirfi GuindoEVP, ACCESS, POLICY & COMMSSELL10.000K$135.00$1.4M
Aug 12, 2026Jennifer ZacharyEVP, GENERAL COUNSELSELL25.388K$121.62$4.7M

Congressional Trading Activity

DateMemberPartyChamberActionAmount
Mar 27, 2026Alan ArmstrongRSenateS$15,001 - $50,000
Feb 4, 2026Josh GottheimerDHouseP$1,001 - $15,000