Johannes Jacobus Oosthuizen
CIK 1916310 · EVP, Oncology & Int?l · last filed 2026-05-07
Johannes Jacobus Oosthuizen is an EVP, Oncology & Int?l who has filed 24 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing, for MRK, was dated May 7, 2026. Across all open-market trades the lifetime net is −$10.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.6M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$2.61M
1
24
-$10.25M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MRK | EVP, Oncology & Int?l | 21,895 | $119.05 | $2.61M | -$10.25M | 24 | 2026-05-07 |
Recent Filings
24 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-07 | MRK | Grant (A) | — | $0 | EDGAR |
| 2026-05-01 | MRK | Mixed | +698 | $76.8K | EDGAR |
| 2026-02-06 | MRK | Sell (S) | −15,000 | -$1.83M | EDGAR |
| 2026-01-28 | MRK | Grant (A) | +5,026 | $539.8K | EDGAR |
| 2025-05-01 | MRK | Grant (A) | — | $0 | EDGAR |
| 2025-02-20 | MRK | Sell (S) | −8,500 | -$714.7K | EDGAR |
| 2025-02-11 | MRK | Mixed | +6,598 | $575.9K | EDGAR |
| 2025-01-29 | MRK | Grant (A) | +8,664 | $848.6K | EDGAR |
| 2024-05-06 | MRK | Mixed | +462 | $58.9K | EDGAR |
| 2024-05-02 | MRK | Grant (A) | — | $0 | EDGAR |