MRUS
Merus N.V.
Insiders bought $7.6B net in the last 90 days ·1 seller, 1 buyer· latest Form 4 filed Dec 30, 2025
Insider Buying
$7.6B
reported purchases (SEC code P)
Insider Selling
$960K
reported sales (SEC code S)
Unique Insiders
2
in the rolling window
Latest filing
Dec 30, 2025
GENMAB A/S
Merus N.V. (MRUS) has 7 SEC Form 4 filings (32 transaction rows) in the rolling window, disclosed by 2 distinct insiders. Most recent filing: Dec 30, 2025.
Inside the rolling window, 2 insiders at Merus N.V. reported 9 open-market purchases totaling $7.6B and 2 open-market sales totaling $960K. The most active filer is 10% Owner GENMAB A/S with 9 filings. Insiders have net bought $7.6B over the trailing 6 months. The largest single insider purchase in this window was $7.5B by 10% Owner GENMAB A/S on Dec 29, 2025. The most recent open-market filing is a purchase of 145,588 shares by 10% Owner GENMAB A/S, dated Dec 26, 2025, worth $14.1M.
- Industry:Biotechnology
- CEO:Jan van de Winkel
- Employees:260
- HQ:Utrecht, NL
- IPO:2016-05-19
| Source | |||||||
|---|---|---|---|---|---|---|---|
| 10% Owner | Purchase | 145,588 | $14.1M | Dec 30 | — | SEC ↗ | |
| 10% Owner | Purchase | 76,920,005 | $7.5B | Dec 30 | — | SEC ↗ | |
| 10% Owner | Purchase | 15,710 | $1.5M | Dec 29 | — | SEC ↗ | |
| 10% Owner | Purchase | 561,042 | $54.4M | Dec 29 | — | SEC ↗ | |
| 10% Owner | Purchase | 96,082 | $9.3M | Dec 29 | — | SEC ↗ | |
| 10% Owner | Purchase | 212,177 | $20.6M | Dec 22 | — | SEC ↗ | |
| 10% Owner | Purchase | 66,264 | $6.4M | Dec 22 | — | SEC ↗ | |
GENMAB A/SFirst filing | 10% Owner | Purchase | 120,752 | $11.7M | Dec 18 | — | SEC ↗ |
GENMAB A/SFirst filing | 10% Owner | Purchase | 150,795 | $14.6M | Dec 18 | — | SEC ↗ |
| VP Controller, PAO | Sale | 1,700 | $163K | Dec 10 | — | SEC ↗ | |
Shuman HarryFirst filing | VP Controller, PAO | Sale | 8,300 | $796K | Nov 28 | — | SEC ↗ |
Earnings: last 7 quarters
Frequently asked questions
How many SEC Form 4 insider filings does MRUS have?
Merus N.V. (MRUS) has 7 SEC Form 4 filings (32 transaction rows) in the rolling 365-day window, disclosed by 2 distinct insiders. Most recent filing: Dec 30, 2025.
When was the most recent SEC Form 4 filing for MRUS?
The most recent Form 4 filing for MRUS on Tracefour is dated Dec 30, 2025.
Who is the most active insider at MRUS?
The most active SEC Form 4 filer at MRUS in the rolling window is 10% Owner GENMAB A/S, with 9 filings.
What is the net insider flow at MRUS over the last 6 months?
Over the trailing 180 days, insiders at MRUS have net bought $7.6B based on SEC Form 4 disclosures.
What was the largest insider purchase at MRUS?
The largest single insider open-market purchase at MRUS in the rolling window was $7.5B by 10% Owner GENMAB A/S on 2025-12-29.
What is the total insider buy and sell value at MRUS in the current window?
Inside the rolling window, insiders at MRUS bought $7.6B and sold $960K based on SEC Form 4 filings.
Can I get alerts for MRUS insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Merus N.V. (MRUS). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.