Insiders / Oosthuizen Johannes Jacobus

Oosthuizen Johannes Jacobus

CIK 1916310personinsider

Companies

First seen

Jan 28, 2026

Last activity

Feb 6, 2026

Companies

Company	Role	Shares held	Peak held	Trades	Latest
Merck & Co., Inc. · MRK	Executive	21,197	36,197	2	—

1 position · latest reported per filing

Company	Security	Shares	As of
Merck & Co., Inc.	Common Stock	21,197	Feb 6, 2026

InsidersInstitutions

This person's insider trades (Form 4), across every company.

Date	Action	Company	Value	Shares Δ	Position after	Impact
Feb 6, 2026	Sell	MRK Merck & Co., Inc. Common Stock	$1.83M	-15K -41.44%	21,197 <0.01% of shares	medium
Jan 26, 2026	Grant	MRK Merck & Co., Inc. Common Stock	$539.8K	+5K +16.12%	36,197 <0.01% of shares	low