Johannes Jacobus Oosthuizen is President, U.S. Market of Merck & Co., Inc.. Currently has a direct ownership of 30,705 shares of MRK, which is worth approximately $2.75 Million. The most recent transaction as insider was on Feb 19, 2025, when has been sold 8,500 shares (Common Stock) at a price of $84.09 per share, resulting in proceeds of $714,765. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 30.7K
28.9% 3M change
31.63% 12M change
Total Value Held $2.75 Million

Johannes Jacobus Oosthuizen Transaction History

Date Transaction Value Shares Traded Shares Held Form
Feb 19 2025
SELL
Open market or private sale
$714,765 $84.09 p/Share
8,500 Reduced 21.68%
30,705 Common Stock
Feb 08 2025
SELL
Payment of exercise price or tax liability
$558,941 $87.28 p/Share
6,404 Reduced 14.04%
39,205 Common Stock
Feb 08 2025
BUY
Exercise of conversion of derivative security
$1,134,814 $87.28 p/Share
13,002 Added 22.18%
45,609 Common Stock
Jan 27 2025
BUY
Grant, award, or other acquisition
$848,552 $97.94 p/Share
8,664 Added 20.99%
32,607 Common Stock
May 04 2024
SELL
Payment of exercise price or tax liability
$57,379 $127.51 p/Share
450 Reduced 1.85%
23,820 Common Stock
May 04 2024
BUY
Exercise of conversion of derivative security
$116,289 $127.51 p/Share
912 Added 3.62%
24,270 Common Stock
Feb 02 2024
SELL
Open market or private sale
$2,411,016 $127.17 p/Share
18,959 Reduced 44.84%
23,327 Common Stock
Feb 02 2024
BUY
Exercise of conversion of derivative security
$1,648,370 $78.73 p/Share
20,937 Added 33.12%
42,286 Common Stock
Jan 22 2024
BUY
Grant, award, or other acquisition
$374,174 $119.43 p/Share
3,133 Added 12.8%
21,349 Common Stock
Nov 09 2023
SELL
Open market or private sale
$213,052 $102.38 p/Share
2,081 Reduced 10.27%
18,190 Common Stock
Oct 30 2023
SELL
Payment of exercise price or tax liability
$46,371 $102.82 p/Share
451 Reduced 2.18%
20,271 Common Stock
Oct 30 2023
BUY
Exercise of conversion of derivative security
$94,080 $102.82 p/Share
915 Added 4.23%
20,722 Common Stock
May 04 2023
SELL
Payment of exercise price or tax liability
$52,844 $118.22 p/Share
447 Reduced 2.21%
19,759 Common Stock
May 04 2023
BUY
Exercise of conversion of derivative security
$107,225 $118.22 p/Share
907 Added 4.3%
20,206 Common Stock
May 01 2023
SELL
Payment of exercise price or tax liability
$49,305 $115.47 p/Share
427 Reduced 2.16%
19,299 Common Stock
May 01 2023
BUY
Exercise of conversion of derivative security
$99,997 $115.47 p/Share
866 Added 4.21%
19,726 Common Stock
Jan 23 2023
BUY
Grant, award, or other acquisition
$229,759 $109.88 p/Share
2,091 Added 10.0%
18,821 Common Stock
Nov 09 2022
SELL
Open market or private sale
$185,261 $103.21 p/Share
1,795 Reduced 9.69%
16,730 Common Stock
Nov 07 2022
SELL
Open market or private sale
$4,531,952 $99.47 p/Share
45,561 Reduced 71.09%
18,525 Common Stock
Nov 07 2022
BUY
Exercise of conversion of derivative security
-
52,743 Added 45.15%
64,086 Common Stock
Oct 30 2022
SELL
Payment of exercise price or tax liability
$45,346 $100.77 p/Share
450 Reduced 3.82%
11,343 Common Stock
Oct 30 2022
BUY
Exercise of conversion of derivative security
$92,003 $100.77 p/Share
913 Added 7.19%
11,793 Common Stock
Oct 28 2022
SELL
Open market or private sale
$364,062 $100.21 p/Share
3,633 Reduced 25.03%
10,880 Common Stock
May 04 2022
SELL
Payment of exercise price or tax liability
$38,934 $87.1 p/Share
447 Reduced 2.99%
14,513 Common Stock
May 04 2022
BUY
Exercise of conversion of derivative security
$79,000 $87.1 p/Share
907 Added 5.72%
14,960 Common Stock
JJO

Johannes Jacobus Oosthuizen

President, U.S. Market
Kenilworth, NJ

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