Chirfi Guindo Merck & Co., Inc. (MRK) insider trading activity

MRK Quotes by TradingView

Chirfi Guindo is Chief Marketing Officer of Merck & Co., Inc.. Currently has a direct ownership of 89,233 shares of MRK, which is worth approximately $7.5 Million. The most recent transaction as insider was on Aug 04, 2025, when has been sold 18,175 shares (Common Stock) at a price of $79.29 per share, resulting in proceeds of $1,441,095. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 89.2K
29.06% 3M change
121.04% 12M change
Total Value Held $7.5 Million

Chirfi Guindo Transaction History

Date Transaction Value Shares Traded Shares Held Form
Aug 04 2025
SELL
Payment of exercise price or tax liability
$1,441,095 $79.29 p/Share
18,175 Reduced 16.92%
89,233 Common Stock
Aug 04 2025
BUY
Exercise of conversion of derivative security
$2,926,038 $79.29 p/Share
36,903 Added 25.57%
107,408 Common Stock
Jan 27 2025
BUY
Grant, award, or other acquisition
$2,757,794 $97.94 p/Share
28,158 Added 28.94%
69,143 Common Stock
Aug 05 2024
SELL
Payment of exercise price or tax liability
$2,005,862 $115.2 p/Share
17,412 Reduced 30.13%
40,369 Common Stock
Aug 05 2024
BUY
Exercise of conversion of derivative security
$4,250,995 $115.2 p/Share
36,901 Added 38.97%
57,781 Common Stock
Aug 03 2023
SELL
Payment of exercise price or tax liability
$1,901,437 $105.7 p/Share
17,989 Reduced 46.92%
20,352 Common Stock
Aug 03 2023
BUY
Exercise of conversion of derivative security
$3,900,435 $105.7 p/Share
36,901 Added 49.04%
38,341 Common Stock

Also insider at

BIIB
BIOGEN INC. Healthcare
Head of Glob Prod Strat & Com
BEAM
Beam Therapeutics Inc. Healthcare
CG

Chirfi Guindo

Chief Marketing Officer
Rahway, NJ

Track Institutional and Insider Activities on MRK

Follow Merck & Co., Inc. and customize your updates to receive the information that matters most to you.

Institutional Portfolio Updates

Receive a notification when an Institution or Guru buys or sells MRK shares.

Notify only if

Insider Trading

Get notified when an Merck & Co., Inc. insider buys or sells MRK shares.

Notify only if

News

Receive news related to Merck & Co., Inc.

Choose your preferred platform and Sign Up 👇 Telegram Email
Track Activities on MRK