Johannes Jacobus Oosthuizen insider trades: Merck (MRK) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Johannes reports to the SEC
Open-market buys and sales
7 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 6, 2026 | MRK | ↓ Sell | 15,000 | $121.87 | $1.8M | Direct | Feb 6, 2026 (0d) |
| Feb 19, 2025 | MRK | ↓ Sell | 8,500 | $84.09 | $715K | Direct | Feb 20, 2025 (1d) |
| Feb 2, 2024 | MRK | ↓ Sell | 18,959 | $127.17 | $2.4M | Direct | Feb 5, 2024 (3d) |
| Nov 9, 2023 | MRK | ↓ Sell | 2,081 | $102.38 | $213K | Direct | Nov 13, 2023 (4d) |
| Nov 9, 2022 | MRK | ↓ Sell | 1,795 | $103.21 | $185K | Direct | Nov 10, 2022 (1d) |
| Nov 7, 2022 | MRK | ↓ Sell | 45,561 | $99.47 | $4.5M | Direct | Nov 7, 2022 (0d) |
| Oct 28, 2022 | MRK | ↓ Sell | 3,633 | $100.21 | $364K | Direct | Nov 1, 2022 (4d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MRK insiders
Open-market trades in the last 12 months
About Johannes Jacobus Oosthuizen's insider trades
Johannes Jacobus Oosthuizen is EVP, Oncology & Int?l at Merck (MRK). Since Oct 28, 2022, Johannes has reported no open-market purchases and 7 sales worth $10.2M on SEC Form 4. In the last 12 months: 1 sale ($1.8M).
Their filings also include option exercises (11 filings), grants and awards (10 filings), shares withheld for taxes (9 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MRK insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.