Johannes Jacobus Oosthuizen net worth and biography

Johannes Oosthuizen Biography and Net Worth

Insider of Merck & Co., Inc.

Jannie Oosthuizen leads Merck Human Health U.S., which is Merck’s largest business globally. He is responsible for P&L, strategy, customer engagement and commercialization in the U.S. for Merck’s broad portfolio of human health medicines and vaccines.

Jannie joined the company in 2014 to lead the Human Health oncology business in Asia Pacific and Latin America, then led Merck’s business in Japan from 2016 to 2020, and then led Global Marketing for Oncology. In each of these roles, Jannie successfully created and implemented new strategies and innovative commercial models that delivered strong, leveraged growth and established Merck as a leading business in those markets and therapeutic areas.

Jannie has deep experience in a broad range of global markets and therapeutic areas, and in building and leading high-performing teams. Prior to Merck, Jannie spent 20 years at Eli Lilly in a wide range of commercial and marketing roles with increasing responsibility. He began his career with Eli Lilly in 1993 in his home country of South Africa. Jannie is a pharmacist by training and graduated from North-West University in South Africa. He has lived and worked in six countries spanning five continents with his wife and three children.

What is Johannes Jacobus Oosthuizen's net worth?: The estimated net worth of Johannes Jacobus Oosthuizen is at least $1.83 million as of November 9th, 2023. Mr. Oosthuizen owns 18,191 shares of Merck & Co., Inc. stock worth more than $1,834,562 as of December 4th. This net worth approximation does not reflect any other assets that Mr. Oosthuizen may own. Learn More about Johannes Jacobus Oosthuizen's net worth.
How do I contact Johannes Jacobus Oosthuizen?: The corporate mailing address for Mr. Oosthuizen and other Merck & Co., Inc. executives is 2000 GALLOPING HILL ROAD, KENILWORTH NJ, 07033. Merck & Co., Inc. can also be reached via phone at (908) 740-4000 and via email at [email protected]. Learn More on Johannes Jacobus Oosthuizen's contact information.
Has Johannes Jacobus Oosthuizen been buying or selling shares of Merck & Co., Inc.?: Johannes Jacobus Oosthuizen has not been actively trading shares of Merck & Co., Inc. in the last ninety days. Most recently, Johannes Jacobus Oosthuizen sold 2,081 shares of the business's stock in a transaction on Thursday, November 9th. The shares were sold at an average price of $102.38, for a transaction totalling $213,052.78. Following the completion of the sale, the insider now directly owns 18,191 shares of the company's stock, valued at $1,862,394.58. Learn More on Johannes Jacobus Oosthuizen's trading history.
Who are Merck & Co., Inc.'s active insiders?: Merck & Co., Inc.'s insider roster includes Sanat Chattopadhyay (Insider), Frank Clyburn (EVP), Robert Davis (CFO), Richard Deluca (EVP), Cristal Downing (Insider), Kenneth Frazier (Insider), Julie Gerberding (EVP), Clark Golestani (EVP), Michael Holston (EVP), Rita Karachun (VP), Caroline Litchfield (CFO), Steven Mizell (EVP), Johannes Oosthuizen (Insider), Joseph Romanelli (Insider), Inge Thulin (Director), Ashley Watson (SVP), Wendell Weeks (Director), and David Williams (Executive vice president, chief information & digital officer). Learn More on Merck & Co., Inc.'s active insiders.
Are insiders buying or selling shares of Merck & Co., Inc.?: During the last year, Merck & Co., Inc. insiders bought shares 1 times. They purchased a total of 2,833 shares worth more than $250,012.25. During the last year, insiders at the sold shares 3 times. They sold a total of 15,237 shares worth more than $1,282,329.74. The most recent insider tranaction occured on November, 3rd when EVP David Michael Williams sold 8,614 shares worth more than $720,044.26. Insiders at Merck & Co., Inc. own 0.1% of the company. Learn More about insider trades at Merck & Co., Inc..
Information on this page was last updated on 11/3/2025.

Johannes Jacobus Oosthuizen Insider Trading History at Merck & Co., Inc.

Transaction Date	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
11/9/2023	Sell	2,081	$102.38	$213,052.78	18,191
11/9/2022	Sell	1,795	$103.21	$185,261.95	16,731
11/7/2022	Sell	45,561	$99.47	$4,531,952.67	18,526

Johannes Jacobus Oosthuizen Buying and Selling Activity at Merck & Co., Inc.

Merck & Co., Inc. Company Overview

Merck & Co., Inc. is a health care company, which engages in the provision of health solutions through its prescription medicines, vaccines, biologic therapies, animal health, and consumer care products. It operates through the following segments: Pharmaceutical, Animal Health, and Other. The Pharmaceutical segment includes human health pharmaceutical and vaccine products. The Animal Health segment discovers, develops, manufactures, and markets animal health products, such as pharmaceutical and vaccine products, for the prevention, treatment and control of disease in livestock, and companion animal species. The Other segment consists of sales for the non-reportable segments of healthcare services. The company was founded in 1891 and is headquartered in Rahway, NJ.

Today's Range

Now: $100.85

$100.54

$102.60

50 Day Range

MA: $90.43

$78.46

$105.71

2 Week Range

Now: $100.85

$73.31

$105.84

Volume

12,757,948 shs

Average Volume

14,661,325 shs

Market Capitalization

$250.31 billion

P/E Ratio

13.32

Dividend Yield

3.17%

Beta

0.29