Oosthuizen Johannes Jacobus
EVP, Oncology & Int?l
Oosthuizen Johannes Jacobus has filed 3 SEC Form 4 filings (4 transaction rows) across 1 company, with disclosures dating back to 2026. 3 of those filings fall inside the rolling window. Most recent filing: May 1, 2026.
On the most recent filing, Oosthuizen Johannes Jacobus is listed as President, U.S. Market at Merck & Co., Inc. Inside the rolling window, Oosthuizen Johannes Jacobus reported no open-market purchases and 1 open-market sale totaling $1.8M in MRK.
Companies traded
Other insiders at MRK
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$1.8M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Oosthuizen Johannes Jacobus made?
Oosthuizen Johannes Jacobus has filed 3 SEC Form 4 filings (4 transaction rows) across 1 company since 2026.
Which companies does Oosthuizen Johannes Jacobus trade?
Oosthuizen Johannes Jacobus has filed SEC Form 4 disclosures for 1 company, including MRK.
When was Oosthuizen Johannes Jacobus's most recent SEC Form 4 filing?
Oosthuizen Johannes Jacobus's most recent SEC Form 4 filing on Tracefour is dated May 1, 2026.
What is Oosthuizen Johannes Jacobus's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Oosthuizen Johannes Jacobus is listed as EVP, Oncology & Int?l.
What is Oosthuizen Johannes Jacobus's total buy and sell value in the current window?
Inside the rolling retention window, Oosthuizen Johannes Jacobus bought $0 and sold $1.8M based on SEC Form 4 filings.
What was Oosthuizen Johannes Jacobus's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 15,000 MRK shares on 2026-02-06, worth $1.8M, per SEC Form 4 filings.