Largest active 13D stakes
Active large-stake positions disclosed in parsed Schedule 13D filings.
MRUS
GENMAB A/S
GMAB · GNMSF · Pharmaceutical Preparations
Latest available SEC filing: SCHEDULE 13G/A ·
Latest disclosures
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Form SCHEDULE 13G/A
SEC filing · Filed
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Latest financial period: Q4 2025
Financial facts · Filed
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Form 20-F
SEC filing · Filed
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Form SCHEDULE 13D/A
SEC filing · Filed
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Form SCHEDULE 13D
SEC filing · Filed
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Form SCHEDULE 13G
SEC filing · Filed
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Form 20-F
SEC filing · Filed
Institutional holders by security
Choose a share class to see reported 13F positions and quarterly changes. Different securities have separate holder histories.
Company details and SEC sources
CIK 0001434265 · SEC filing index. Filing dates describe disclosures, not live market data.
- Listed symbols
- GMAB on Nasdaq, GNMSF on OTC
- Parsed SEC ownership signals
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How to read these SEC ownership signals
- Read each filing family separately: Form 13F, Schedules 13D/G, and Forms 3/4/5 answer different SEC disclosure questions and should not be blended into one ownership total.
- Use 13F values for visible U.S.-listed equity portfolios, 13D/G rows for large beneficial-owner stakes, and Forms 3/4/5 rows for reporting-owner positions and transactions.
- Open the linked research path when you need the filing, CIK, issuer, CUSIP, date, or source trail behind a value.
- SEC industry group
- Pharmaceutical Preparations (Office of Life Sciences)
- Business address
- Toldbodgade 33, 1253 Copenhagen K, Denmark, 00000
Ownership signals
CIK-linked ownership evidence from parsed SEC filings.
1 signal
At a glance
Names, identifiers, and filing context for this profile.
2 identity fields