Updated Jul 16, 2026
GENMAB A/S is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $7.59B.

| Role | Insider |
|---|---|
| Notability | 30/100 |
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| Total purchases tracked | 11 |
|---|---|
| Avg 5-day return | -304.67% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-12-30 | MRUS | Merus N.V. | P — Open-market purchase | 75.87M | $97.00 | $7.36B |
| 2025-12-30 | MRUS | Merus N.V. | P — Open-market purchase | 1.05M | $97.00 | $102.12M |
| 2025-12-30 | MRUS | Merus N.V. | P — Open-market purchase | 3.0K | $97.00 | $289K |
| 2025-12-29 | MRUS | Merus N.V. | P — Open-market purchase | 142.6K | $97.00 | $13.83M |
| 2025-12-29 | MRUS | Merus N.V. | P — Open-market purchase | 96.1K | $97.00 | $9.32M |
| 2025-12-29 | MRUS | Merus N.V. | P — Open-market purchase | 561.0K | $97.00 | $54.42M |
| 2025-12-29 | MRUS | Merus N.V. | P — Open-market purchase | 15.7K | $97.00 | $1.52M |
| 2025-12-22 | MRUS | Merus N.V. | P — Open-market purchase | 66.3K | $97.00 | $6.43M |
| 2025-12-22 | MRUS | Merus N.V. | P — Open-market purchase | 212.2K | $97.00 | $20.58M |
| 2025-12-18 | MRUS | Merus N.V. | P — Open-market purchase | 150.8K | $97.00 | $14.63M |
| 2025-12-18 | MRUS | Merus N.V. | P — Open-market purchase | 120.8K | $97.00 | $11.71M |
GENMAB A/S is a corporate insider — currently tracked as Insider. InsiderAlpha tracks every SEC Form 4 filing in real time.
Recorded transactions: 11 open-market purchases ($7.59B) and 0 open-market sales () across all tracked filings.
Across 11 tracked purchases, GENMAB A/S averaged no 30-day data yet with a win rate pending. InsiderAlpha rates the track record at –/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live GENMAB A/S profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.